The tungsten rod is a rod-shaped material made from tungsten, which has advantages such as good density, high melting point, good thermal conductivity, and corrosion resistance. It is widely used in manufacturing various high-temperature heating equipment and high-precision components.

Basic characteristics of tungsten rods

High density: The density of tungsten rods is 19.35g/cm3, one of the highest densities among metal materials. Its 

high-density characteristics make tungsten rods less prone to deformation and warping during manufacturing, ensuring their structural stability and reliability.

High melting point: The melting point of tungsten rods is as high as 3410 ℃, which can maintain good stability at high temperatures and will not melt or decompose. This characteristic enables tungsten rods to have excellent thermal stability and corrosion resistance in high-temperature environments and is widely used in high-temperature heating equipment and pipelines.

Good thermal conductivity: Tungsten rods have good thermal conductivity, which can quickly transfer heat to surface 

of heating elements, thereby improving heating efficiency.

Corrosion resistance: Tungsten rods are not easily oxidized or corroded in high-temperature environments and can resist various chemical corrosion.

Application fields of tungsten rods

Industrial field: In the industrial field, tungsten rods are widely used to manufacture high-temperature heating equipment, high-temperature pipelines, chemical equipment, etc. In addition, tungsten rods can also be used to manufacture high-precision electronic components and components, such as circuit boards, connectors, etc.

In architecture, tungsten rods are mainly used for structural support and decoration. Due to its high density, strength, and corrosion resistance, tungsten rods can manufacture high-level bridges, support structures for high-rise buildings, and more. At the same time, the luxurious texture and elegant colors of tungsten rods also make them excellent decorative materials for high-end buildings.

Medical field: In the medical field, tungsten rods are widely used in producing surgical instruments, implants, and orthotics due to their non-toxic and non-radioactive characteristics. In addition, tungsten rods can also be used to make high-precision and corrosion-resistant laboratory and diagnostic equipment.

Production process of tungsten rods

The production process of tungsten rods mainly includes processes such as batching, forging, and heat treatment. The specific process is as follows:

Ingredients: Select appropriate metal raw materials for ingredients according to product requirements.

Forging: Heat the ingredients before forging, and strictly control the temperature and deformation to ensure stable product performance.

Heat treatment: Heat treats the forged product to eliminate internal stress and improve its mechanical properties.

Other processing: Surface treatment, mechanical processing, etc., according to product requirements.

Future development direction of tungsten rods

With the continuous progress of technology and the increasing demand for applications, the future development of tungsten rods will mainly focus on the following aspects:

High performance: To meet the demand for high-performance materials in different fields, the physical, chemical, and mechanical properties of tungsten rods are improved by changing their composition, microstructure, and processing technology. For example, by adding trace elements or using special processing techniques, tungsten rods' high-temperature strength, hardness, or corrosion resistance can be improved.

Environmental protection: With the improvement of environmental awareness, more attention will be paid to the environmental pollution problem during the production of tungsten rods. Develop environmentally friendly production processes and technologies, reduce environmental pollution loads, and achieve sustainable development. For example, adopting environmentally friendly production processes and equipment to reduce waste gas, wastewater, and slag emissions and improve resource utilization efficiency.

Functionalization: Utilizing surface coating, doping, and other technical means, tungsten rods can have specific functional properties and expand their application range. For example, developing tungsten-based biomaterials with antibacterial, antiviral, anti-tumor, and other biological activities will play a greater role in medicine.

Composite: Composite with other materials to form composite materials with excellent performance, further improving tungsten rods' application value and effectiveness. For example, by combining tungsten rods with materials such as ceramics and glass, new materials with high-temperature performance and good toughness can be obtained.

Intelligentization: By combining modern technology, microelectronic devices such as intelligent sensors and micro actuators are integrated into tungsten rod substrates to achieve intelligent and multifunctional materials. For example, combining microelectronic devices with tungsten rods can create high-temperature electronic components with adaptive capabilities.

Conclusion

In short, as a material with broad application prospects, tungsten rods will continue to develop and progress in the future. With the continuous improvement of technology and the expansion of using fields, tungsten rods will play an important role in more fields, bringing more convenience and benefits to human production and life.

About RBOSCHCO

RBOSCHCO is a trusted global chemical material supplier & manufacturer with over 12 years experience in providing super high-quality chemicals and Nanomaterials. The company export to many countries, such as USA, Canada, Europe, UAE, South Africa, Tanzania,Kenya,Egypt,Nigeria,Cameroon,Uganda,Turkey,Mexico,Azerbaijan,Belgium,Cyprus,Czech Republic, Brazil, Chile, Argentina, Dubai, Japan, Korea, Vietnam, Thailand, Malaysia, Indonesia, Australia,Germany, France, Italy, Portugal etc. As a leading nanotechnology development manufacturer, KMPASS dominates the market. Our professional work team provides perfect solutions to help improve the efficiency of various industries, create value, and easily cope with various challenges. If you are looking for tungsten rods, please send an email to: sales1@rboschco.com

Graphite is a non-metallic element with excellent conductivity and chemical stability and is widely used in industry and daily life. This article will introduce the basic properties, preparation methods, application fields, and development directions of graphite.

1. Basic properties of graphite

Graphite is an allotrope of carbon elements, consisting of hexagonal honeycomb-like structures composed of carbon atoms, and is a type of layered crystal. Graphite has excellent thermal conductivity, second only to copper in conductivity, and can be used for manufacturing electrodes, heat exchangers, etc. In addition, graphite also has corrosion and oxidation resistance, which can exist stably under high temperatures and pressure, making it a good corrosion-resistant material.

There are various forms of graphite, including crystalline, flake, and spherical shapes. Among them, flake graphite is a common industrial graphite with high purity and low impurity content. Spherical graphite is a high-quality form with high 

conductivity and low resistivity, which can be used to manufacture high-precision electronic components.

2. Preparation method of graphite

There are two main methods for preparing graphite: natural and artificial. Natural graphite is a material extracted from natural mineral deposits, with high purity and low cost. Artificial graphite is a material prepared through chemical synthesis with high structural stability and mechanical strength.

The preparation process of natural graphite mainly includes three steps: ore collection, selection, and graphitization. Graphitization is the heat treatment of graphite at high temperatures to improve its crystal structure and physical properties. The preparation methods of artificial graphite mainly include silicon carbide epitaxy, chemical vapor deposition, sol-gel method, etc. Among them, the silicon carbide epitaxy method is to epitaxial grow graphite materials on the silicon carbide template, the chemical vapor deposition method is to deposit graphite materials on the substrate with gaseous compounds under the action of catalysts, and the sol-gel method is to prepare graphite materials with organometallic compounds in solution.

3. Application Fields of Graphite

Graphite is a multifunctional material with extensive applications in industry and daily life.

Refractory material: Graphite has excellent high-temperature and corrosion resistance, making it widely used in refractory materials. Graphite products, including refractory bricks, crucibles, high-temperature furnaces, etc., have high thermal stability and corrosion resistance and can be used for high-temperature smelting and processing.

Casting material: Graphite has good wear and corrosion resistance and can be used to manufacture casting molds and wear-resistant parts. Graphite molds can produce non-ferrous metal castings, such as aluminum and copper, with high accuracy and long service life.

Lubricant: Graphite has good lubrication performance and can be used to manufacture lubricants and greases. Graphite lubricants can be used to lubricate various mechanical equipment, such as machine tools, gearboxes, etc., reducing friction and improving equipment efficiency and lifespan.

Sealing material: Graphite has good performance and corrosion resistance and can be used to produce sealing materials and components. Graphite seals can be used in various chemical reaction kettles, chemical equipment, and other occasions to prevent gas and liquid leakage.

Conductive material: Graphite has excellent thermal conductivity and can be used to manufacture conductive and heat-dissipation materials. Graphite conductive materials can manufacture electrical contact materials such as electrode brushes and heat sinks for electronic components.

Biomedical field: Graphite has good biocompatibility and biological activity and can be used in the biomedical field. In biomedicine, graphite is used to make medical devices such as artificial joints, fixed parts, and surface coatings of biomaterials.

Other fields: In addition to the above applications, graphite can also be used to make pencil leads, electrode materials, battery-negative electrode materials, etc.

4. The Development Direction of Graphite

With science and technology's continuous development and progress, graphite, as a non-metallic material, still has broad development prospects. The future development direction of graphite mainly includes the following aspects:

Development of high-purity graphite: High-purity graphite has higher conductivity and chemical stability and can be applied in high-precision electronic components and other fields. Therefore, developing high-purity graphite has become one of the current research hotspots.

Research and development of new preparation technologies: There are still some shortcomings in the preparation methods of graphite, such as high cost and low production efficiency. Therefore, developing new graphite preparation technologies, such as the chemical vapor deposition method, has become one of the current research focuses.

Development of functional composite materials: Functional composite materials refers to combining two or more different materials to obtain materials with excellent performance. In future development, it can be studied to composite graphite with other materials to obtain graphite composite materials with better conductivity, corrosion resistance, and mechanical properties.

Environmental protection and sustainable development: With the continuous improvement of environmental protection and sustainable development awareness, the future graphite industry also needs to pay attention to environmental protection and sustainable development issues. For example, environmentally friendly processes and technologies should be adopted in production; Attention should be paid to resource conservation and recycling during use.

In summary, as a non-metallic material, graphite has wide application prospects in industry and daily life. In future development, attention should be paid to the development of high-purity graphite, the research and development of new preparation technologies, the development of functional composite materials, and environmental and sustainable development issues to promote the sustainable development of the graphite industry.

About RBOSCHCO

RBOSCHCO is a trusted global chemical material supplier & manufacturer with over 12 years experience in providing super high-quality chemicals and Nanomaterials. The company export to many countries, such as USA, Canada, Europe, UAE, South Africa, Tanzania,Kenya,Egypt,Nigeria,Cameroon,Uganda,Turkey,Mexico,Azerbaijan,Belgium,Cyprus,Czech Republic, Brazil, Chile, Argentina, Dubai, Japan, Korea, Vietnam, Thailand, Malaysia, Indonesia, Australia,Germany, France, Italy, Portugal etc. As a leading nanotechnology development manufacturer, RBOSCHCO dominates the market. Our professional work team provides perfect solutions to help improve the efficiency of various industries, create value, and easily cope with various challenges. If you are looking for graphite powder, please send an email to: sales1@rboschco.com

Boron carbide (B4C) is a carbon compound with excellent properties, such as high hardness, melting point, and heat transfer. It is widely used in industries, military, aerospace, and other fields. This article will introduce the preparation methods, influencing factors, performance characterization, and application fields of boron carbide, providing references for research and application in related fields.

Preparation method

The preparation methods of boron carbide mainly include the carbon thermal reduction method, arc melting method, and 

chemical vapour deposition method.

Carbothermal reduction method

The carbon thermal reduction method is commonly used for preparing boron carbide. This method uses boric acid and carbon black (or graphite) as raw materials and generates boron carbide and carbon dioxide through a high-temperature melting reaction. The reaction equation is B2O3+3C → B4C+CO. The reaction temperature is generally 1500-1700 ℃. The advantages of this method are a simple process and low cost, but the purity of the prepared boron carbide is low, making it difficult to meet the high purity requirements.

Arc melting method

The arc melting method involves boric acid or borax's heating and melting reaction with graphite electrodes in an arc to generate boron carbide. The reaction equation is B2O3+3C → B4C. The reaction temperature is generally 1800~2000 ℃. The boron carbide prepared by this method has high purity and fine particles, but the process is complex and expensive.

Chemical vapour deposition method

The chemical vapour deposition method utilizes the reaction of gaseous borane and carbon black at high temperatures to generate boron carbide. The reaction equation is B2H6+6C → B4C+6H2. The reaction temperature is generally between 1000~1200 ℃. The boron carbide prepared by this method has high purity and fine particle size, but the process is complex and expensive.

Influencing factors

The factors affecting the preparation of boron carbide mainly include raw material quality, preparation temperature, and insulation time.

Raw material quality

The quality of raw materials is very important factor affecting the preparation of boron carbide. The purity and particle size of boric acid and carbon black (or graphite) impact the preparation and quality of boron carbide. The higher the purity and the more uniform the particle size, the better the quality of the prepared boron carbide.

Preparation temperature

The preparation temperature is a key factor affecting the preparation of boron carbide. High or low temperatures can affect the generation and purity of boron carbide. Generally speaking, the higher the preparation temperature, the faster the generation rate of boron carbide. However, excessive temperature can lead to the volatilization of boron and the excessive oxidation of carbon, affecting the quality of boron carbide. Therefore, selecting the appropriate preparation temperature is crucial.

Holding time 

Holding time is also one of the factors affecting the preparation of boron carbide. At a certain temperature, the longer the holding time, the more complete the reaction of boron carbide. However, if it is too long, it will lead to the volatilization of boron and excessive oxidation of carbon, affecting the quality of boron carbide. Therefore, choosing the appropriate insulation time is also crucial.

Performance characterization

The performance characterization of boron carbide mainly includes physical, chemical, and mechanical properties.

physical property

The physical properties of boron carbide mainly include density, conductivity, thermal conductivity, etc. Among them, the density is 2.52g/cm3, the conductivity is 10-6S/m, and the thermal conductivity is 97W/m · K.

chemical property

Boron carbide has chemical stability and is not easily reactive with acids and alkalis. B4C can react with O2, H2O, etc. at high temperatures to generate B2O3, CO, etc. In addition, B4C also has antioxidant and corrosion resistance, making it suitable for long-term use in high-temperature and corrosive environments.

Mechanical property 

Boron carbide has characteristics such as high hardness, melting point, and heat transfer, making it widely used in industries, military, aerospace, and other fields. Among them, the hardness is 3500kg/mm2, the melting point is 2450 ℃, and the heat transfer rate is 135W/m · K. In addition, boron carbide also has good wear and corrosion resistance, which can maintain its performance in complex working conditions.

Application field

Boron carbide is widely used in industries, military, aerospace, and the other fields due to its excellent performance.

Industrial sector

Boron carbide is mainly used in the industrial field to produce high-performance products such as abrasives, grinding tools, cutting blades, drill bits, etc. In addition, due to its high hardness and wear resistance, boron carbide can also be used to make ceramic composite materials, wear-resistant parts, etc.

Military field

Boron carbide is widely used in producing protective armour for military equipment such as armoured vehicles and tanks due to its high hardness and impact resistance. In addition, due to its high heat transfer performance, boron carbide can also be used to make heat sinks in military communication equipment.

About RBOSCHCO

RBOSCHCO is a trusted global chemical material supplier & manufacturer with over 12 years experience in providing super high-quality chemicals and Nanomaterials. The company export to many countries, such as USA, Canada, Europe, UAE, South Africa, Tanzania,Kenya,Egypt,Nigeria,Cameroon,Uganda,Turkey,Mexico,Azerbaijan,Belgium,Cyprus,Czech Republic, Brazil, Chile, Argentina, Dubai, Japan, Korea, Vietnam, Thailand, Malaysia, Indonesia, Australia,Germany, France, Italy, Portugal etc. As a leading nanotechnology development manufacturer, RBOSCHCO dominates the market. Our professional work team provides perfect solutions to help improve the efficiency of various industries, create value, and easily cope with various challenges. If you are looking for boron carbide, please send an email to: sales1@rboschco.com

Calcium is a nutrient that your body uses for healthy bones and teeth. It also plays a role in the control of blood pressure and maintains heartbeats.

It is a member of the alkaline earth elements group and serves as an alloying agent for other metals such as aluminum and beryllium. It is found in many industrial materials such as cement and mortar.

The chemical formula for calcium nitride is Ca3N2 (Ca-N-O). It has an atomic number of 20 and a valency of +2.

How is this compound produced?

Calcium nitride is produced from elemental calcium and nitrogen. It is a red-brown, crystalline solid that is formed when the calcium reacts with air to form the oxide, CaO.

To produce calcium nitride, a fine fibrous calcium metal purified by distillation is placed in a nickel boat and heated at 450 for 3 4 h in pure N2 gas flow. At this temperature, the metallic calcium undergoes a crystal transformation into a hexagonal crystal (body-centered cubic), which loosens its lattice structure and allows the nitriding reaction to occur.

Calcium nitride is widely used as a catalyst for the synthesis of other compounds, as a reagent for metal alloying, as a desiccant and a chemical analysis reagent, and as a raw material in the production of light-emitting diode (LED) phosphors. It is also a significant hydrogen storage reagent and a critical material in advanced fuel cells.

cobalt chromium molybdenum alloys are used in the medical industry for applications such as orthopedic implants. Their popularity has waned due to their limited hardness and tribological properties, leading to the development of alternative systems.

In orthopaedics, cobalt-chromium-molybdenum alloys have been widely used in hip replacements and other metal-on-metal prostheses because of their high strength. However, complications such as loosening and tissue necrosis have been reported. These have been attributed to the alloy’s biocompatibility.

Alloys of this type are manufactured using a range of processing techniques, including casting and wrought forging. Some are fabricated through spark plasma sintering, which results in an alloy with carbide-free microstructures.

The influence of chromium and molybdenum content on the phases present in a cobalt-chromium-molybdenum system is investigated through X-ray diffraction (XRD), nanomechanical, and electrochemical behavior. The results indicate that the hardness of the alloys increases in line with the increasing chromium content, and reduces with increasing molybdenum content.

In addition, the open-circuit potential, polarization resistivity, and linear sweep voltammetry disclose that passivity improves in line with the increasing Cr content, whereas reduced modulus demonstrates an inflection at 30 wt% of Cr. These findings are in agreement with previous research on the metallurgical properties of cobalt-chromium-molybdenum systems.

Cobalt-based alloys possess many desirable properties, such as heat resistance (strong at very high temperatures), wear resistance, and corrosion resistance. They are generally categorized into softer and harder grades, based on the crystallographic nature of cobalt (its sensitivity to stress), the solid-solution-strengthening effects of chromium, tungsten, and molybdenum, the formation of metal carbides, and the corrosion resistance imparted by chromium. The softer and tougher compositions are usually employed in high-temperature applications such as gas turbine vanes and buckets, while the more rigid grades are used to withstand wear and tear.

sodium stearate chemical formula is C17H35CO2Na and it is a salt of the fatty acid stearic acid. It is a tertiary carboxylic acid, which is often used as a surfactant in various products, including soaps and detergents.

Stearic acid is a naturally occurring saturated fatty acid that can be sourced from either animal fats and oils (lard, tallow) or vegetable oil sources such as palm, coconut, and rapeseed oil. It is usually present in the form of triglyceride, which has long hydrocarbon chains and glycerine molecules attached to them.

It is a common ingredient in most types of commercial soaps. It also is used in solid deodorants, rubbers, latex paints, and as an accelerator for many types of printing inks.

The molecule of sodium stearate is composed of both hydrophilic and hydrophobic parts which makes it a very stable emulsifier in water, as well as a very useful thickening agent. It is mainly used as a detergent in soaps and other personal care products because of its excellent ability to dissolve oily substances.

Sodium stearate is an effective and inexpensive additive that can be used in numerous applications, as well as in food production. It is an approved food additive by the FDA and European authorities, as well as many other national and international regulatory bodies.

It is a mild, safe, biodegradable ingredient that can be used in most industries and applications. Besides being a detergent, it can be used as a lubricant and as a thickening agent in food. It is also widely used in pharmaceuticals as a stearate, emulsifier, and anticaking agent.

Nickel ii selenide has the honor of being the first of its kind to hit the market. This metallic reddish brown chalcogenide has the honor of being one of only two known commercially available nickel based chalcogenide (the other being niobium) and is used in a wide variety of applications including magnetic compass and resonant energy storage.

Nickel ii selenide is readily available in multiple grades and forms, typically manufactured to order. American Elements is a recognized industry leader and can be trusted for your custom specialty chemical needs. The company offers a full line of high purity and high concentrations in bulk quantities, often with special pricing and delivery terms. The best way to learn more about this luminous powder is to contact us today!

The chemical formula of calcium nitride is Ca3N2. It is a red-brown crystalline solid compound made up of calcium and nitrogen. It is formed along with the oxide, CaO, when calcium burns in the air.

There are several isomorphs of this material. a-calcium nitride is the most common form.

This isomorphous form of nitride is used to prepare high-end phosphors. It is also used in diamond tools, metal ceramics, and high-temperature alloy additives.

In order to make this isomorphous, it is heated in pure N2 gas flow at 450 for 3 to 4 hours. This temperature is the highest at which calcium nitride can be made. Because of the crystalline transformation of calcium metal at this temperature (hexagonal crystal Ca - body-centered cubic Ca), the lattice structure becomes loose, and nitriding reaction speed is very fast.

When calcium nitride is dissolved in water, it forms calcium hydroxide which releases ammonia. The resulting solution is soluble in dilute acid and decomposes in anhydrous alcohol.

It is an important reagent in the chemical industry. It can be reacted with hydrogen to obtain active nitride ions. It can also be used as a desiccant, reducing agent and chemical analysis reagent. It is suitable for the production of light-emitting diode phosphors and hydrogen fuel cells. It is available in bulk quantity. is a leading supplier and manufacturer of high-quality calcium nitride. Contact us to learn more!