Ihe mkpuchi seramiiki 3000C ọhụrụ emepụtara nke ọma - Carbide nwere otu akụkụ nwere ọtụtụ boron.

(Ọhụrụ 3000°C Ablative Ceramic mkpuchi emepụtara nke ọma - Carbide nwere otu akụkụ nke ọtụtụ boron)

Boron carbide (nke a makwaara dị ka diamond ojii) nwere ụdị molekụla nke B4C. Ọ na-abụkarị isi awọ na agba na ntụ ntụ. A na-eji ya na ngwa agha ahụ, ngwa agha tank na ngwa ụlọ ọrụ ndị ọzọ. Ọ nwere ike Mohs 9.3.
Ọnụ ọgụgụ dị ukwuu nke ule emeela ka ịmepụta mkpuchi seramiiki ọhụrụ site na Huang Boyun, Academician na National Laboratory of Powder Metallurgy of Central South University. Ọganihu a nwere ike imeghe ụzọ ụgbọ ala hypersonic.

Prọfesọ Xiong Xiang nke Institute of Powder Metallurgy na Central South University kwuru na ịfefe hypersonic bụ ọsọ hà nhata ma ọ bụ karịa karịa ọsọ ụda nke okpukpu ise. Ya bụ, ọ na-eme njem dịkarịa ala kilomita 6,120 n'otu awa. Ọ bụrụ na isi ihe nhazi nke ụgbọ elu ahụ nwere ike iguzogide oke esemokwu ikuku na mmetụta okpomọkụ, oge ụgbọ elu si Beijing na New York ga-ewe ihe na-erughị awa 2. . Ihe mkpuchi seramiiki achọtara ọhụrụ na Mahadum Central South na ihe mejupụtara na-enye nchebe ka ukwuu na akụrụngwa. Otu nkeji nkeji nkeji nke mbụ n'ụwa, nke nwere boron, carbide ultra-high okpomọkụ ihe ka ejikọtala. Ihe mkpuchi a zuru oke maka "njikọ" nke ihe carbon-carbon. Nnyocha n'ime ihe ndị agwakọtara na sistemụ ọnụọgụ ọnụọgụ abụọ bụ isi ihe na-elekwasị anya n'ọhịa ihe ọhụrụ. Ngwa nke ọma nke ihe ndị a na ngwa hypersonic ga-erite uru dị ukwuu na mmepe ha.

Ihe mkpuchi seramiiki nke nwere carbon/carbon gbanwetụrụ nke nwere akụkụ anọ nke nwere otu akụkụ carbide bụ nke zirconium titanium carbon, carbon, na ihe boron ndị ọzọ mebere. A na-ewebata usoro seramiiki ọtụtụ n'ime nchikota carbon/carbon porous site na usoro ntinye. Ọ na-ejikọta oke okpomọkụ nke carbides na antioxidation Njirimara. Ihe ndị mejupụtara na mkpuchi dị elu n'ihe gbasara ablation na iguzogide ujo. Seramiiki oxide nwere ike iguzogide oke okpomọkụ nke 3000C. Ọnụọgụ mfu ablation.

Seramiiki ultra-high okpomọkụ na-agwakọta mgbanwe okpomọkụ dị elu site na carbides nwere ihe mgbochi oxidation. Nke a bụ ihe na-eme ka ha bụrụ akụkụ dị mkpa nke ụgbọ ala hypersonic. Xiong Xiang kwuru na akụkụ ndị a bụ akụkụ kachasị mma.

Nature Communications bipụtara nsonaazụ nyocha sitere na otu mmepe na June 15th. Nke mbụ iji mechaa tesis bụ State Key Laboratory of Powder Metallurgy of Central South University. Zeng Yi na Prọfesọ Xiong Xiang bụ ndị mbụ dekọrọ akwụkwọ. Dr. Xiong Xiang bụ onye odee mbụ. Mahadum Manchester (UK) bụ onye mbụ nyochara ma kọwaa ihe a.

Mgbe e bipụtasịrị ya, isiokwu ahụ nwetara nlebara anya dị ukwuu site na ngalaba agụmakwụkwọ gburugburu ụwa na mgbasa ozi. N'ime ụbọchị atọ, e ebudatala akụkọ ahụ ihe karịrị ugboro 5,000. E budatakwara otu akụkọ ahụ n’agbata ugboro 300 na 900. Ọtụtụ mgbasa ozi bụ isi kpuchiri nyocha a, gụnyere British Daily Mail na The Economist. United States Yahoo na igwe ọha yana ụlọ ọrụ mgbasa ozi Satellite Russia na ụlọ akwụkwọ agụmakwụkwọ ndị ọzọ nwere ikike. . Onye nyocha Nature Newsletter kwuru, "Nchọpụta nyocha nke dị n'elu ga-akpali mmasị agụmakwụkwọ na mmasị itinye usoro ihe onwunwe anọ n'ime ike hypersonic, n'ihi na nke a bụ usoro ihe onwunwe nwere olileanya."

Site n'enyemaka nke National 863 na 973 Foundations, Prọfesọ Chang Xiang (ọkà mmụta si Yangtze River), otu ahụ na-arụ ọrụ na mkpuchi antioxidation maka carbon / carbon composites na oke okpomọkụ (1600 ° C). Emere nke a site na nkwado National Natural Science Foundation. Ị ga-achọ ihe mkpuchi seramiiki ultra-high okpomọkụ nke nwere ezigbo nguzogide oxidation. A na-enyocha usoro ihe onwunwe maka ihe ndị a: titanium carbide; strontium carbide; akara nke zirconium; tantalum carbide. Ọ gụnyekwara ọtụtụ ihe ndị ọzọ na-ekpo ọkụ. Ọ were afọ 15 iji nweta ọganihu na mmepe nke mkpuchi seramiiki nke na-eguzogide ọgwụ ablation na ultra high okpomọkụ (3000 ° C).

Luoyang Tech Co., Ltd, bụ onye na-emepụta ntụ ntụ nke Boride nwere ihe karịrị afọ iri na abụọ na mmepe ngwaahịa kemịkal na nyocha. Ọ bụrụ na ị na-achọ Boride ntụ ntụ nke dị elu, biko kpọtụrụ anyị.

(Ọhụrụ 3000°C Ablative Ceramic mkpuchi emepụtara nke ọma - Carbide nwere otu akụkụ nke ọtụtụ boron)