Na narị afọ nke 21, na mmepe nke sayensị na teknụzụ, ozi, ike, ihe, bayoloji engineering aghọwo ihe anọ ogidi nke mmepe nke taa na-elekọta mmadụ arụpụtaghị ihe, silicon carbide n'ihi kwụsiri ike chemical Njirimara, elu thermal conductivity, thermal mgbasa ọnụọgụ nke obere, obere njupụta, ezigbo uwe mgbochi, elu ike ike, elu n'ibu ike, chemical corrosion iguzogide na ndị ọzọ e ji mara, ngwa ngwa mmepe na ubi nke ihe, A na-eji seramiiki bọọlụ bearings, valves, ihe semiconductor, gyro, ihe eji atụ ihe, ikuku ikuku na mpaghara ndị ọzọ.
Emepụtala seramiiki silicon carbide kemgbe 1960. Na mbụ, a na-ejikarị silicon carbide eme ihe na igwe egweri ihe na refractories. Mba dị iche iche n'ụwa niile na-etinye aka na mmepụta nke ceramics dị elu, ma ugbu a ọ bụghị nanị na-eju afọ na nkwadebe nke omenala silicon carbide ceramics, mmepụta nke ụlọ ọrụ ceramics dị elu na-eto ngwa ngwa, karịsịa na mba ndị mepere emepe. N'ime afọ ndị na-adịbeghị anya, ceramics multi-phase dabere na ceramics SIC apụtawo n'otu n'otu, na-emeziwanye ike na ike nke ihe monomer. Silicon carbide bụ isi akụkụ anọ nke ngwa, ya bụ, ceramics na-arụ ọrụ, ihe mgbagha dị elu, abrasives na akụrụngwa igwe.
Silicon carbide seramiiki nwere ezigbo nguzogide eyi
Silicon carbide ceramics a mụọla ma kpebisie ike. Nguzogide mkpuchi nke silicon carbide ceramics ngwaahịa a bụ oge 266 nke manganese ígwè, ihe dị ka oge 1741 nke nnukwu ihe nkedo chromium. Nguzogide iyi ahụ dị ezigbo mma. Ọ ka nwere ike ịzọpụta anyị nnukwu ego. Enwere ike iji seramiki silicon carbide na-aga n'ihu ruo ihe karịrị afọ iri.
Silicon carbide ceramik nwere ike dị elu, ike siri ike na ịdị arọ
Dị ka ụdị ihe ọhụrụ, iji silicon carbide ceramics ike ngwaahịa a dị oke elu, ịdị elu siri ike, ịdị arọ dịkwa oke ọkụ, ihe ndị dị otú ahụ silicon carbide ceramics na-eji, ntinye na nnọchi nke n'elu ga-adaba adaba.
Mgbidi dị n'ime nke silicon carbide seramiiki dị mma ma ọ naghị egbochi ntụ ntụ
Silicon carbide ceramics ngwaahịa a na-agbapụ mgbe okpomọkụ dị elu, ya mere, usoro nke silicon carbide ceramics dị ntakịrị, elu dị mma, ịma mma nke iji ya ga-adị mma karị, ya mere eji ya na ezinụlọ, ịma mma ga-adị mma karị.
Ọnụ ego nke ceramik carbide silicon dị ala
Ọnụ ego nke imepụta seramiiki silicon carbide n'onwe ya dị ntakịrị, yabụ na anyị adịghị mkpa ịzụta ọnụahịa nke ceramics silicon carbide dị oke ọnụ, yabụ maka ezinụlọ anyị, mana nwekwara ike ịchekwa nnukwu ego.
Ngwa seramiiki silicon carbide:
Silicon carbide bọọlụ seramiiki
Bọọlụ seramiiki nke silicon carbide nwere akụrụngwa akụrụngwa dị mma, nguzogide oxidation dị mma, nguzogide abrasion dị elu na ọnụọgụ esemokwu dị ala. Silicon carbide seramiiki bọọlụ dị elu okpomọkụ, ihe seramiiki nkịtị na 1200 ~ 1400 Celsius ike ga-ebelata nke ukwuu, na silicon carbide na 1400 Celsius ekwe ike ka na-edobe na ọkwa dị elu nke 500 ~ 600MPa, ya mere okpomọkụ ọrụ ya nwere ike iru. 1600 ~ 1700 Celsius.
Ihe mejupụtara silicon carbide
A na-eji silicon carbide matrix composites (SiC-CMC) mee ihe n'ọtụtụ ebe n'ọhịa nke ikuku maka usoro okpomọkụ ha dị elu n'ihi ịdị elu ha siri ike, ike dị elu na ezigbo nkwụsị oxidation. Usoro nkwadebe nke SiC-CMC gụnyere fiber preforming, ọgwụgwọ okpomọkụ dị elu, mkpuchi mesophase, densification matrix na post-ọgwụgwọ. Ike dị elu nke carbon fiber nwere ike dị elu na ịdị mma dị mma, na ahụ a na-emepụta nke ọma nke ejiri ya mee nwere ezigbo ihe eji arụ ọrụ.
Mesophase mkpuchi (ya bụ, teknụzụ interface) bụ isi teknụzụ na usoro nkwadebe, nkwadebe nke usoro mkpuchi mesophase gụnyere chemical vapor osmosis (CVI), kemịkalụ vapor deposition (CVD), sol-sol method (Sol-gcl), polymer impregnation cracking method (PLP), nke kachasị mma maka nkwadebe nke silicon carbide matrix composites bụ usoro CVI na usoro PIP.
Ihe mkpuchi ihu na-agụnye carbon pyrolytic, boron nitride na boron carbide, n'ime nke boron carbide dị ka ụdị mkpuchi mkpuchi mkpuchi ikuku oxidation na-akwụ ụgwọ karịa. SiC-CMC, nke a na-ejikarị na ọnọdụ oxidation ruo ogologo oge, ọ dịkwa mkpa ka a na-agwọ ọgwụgwọ oxidation, ya bụ, oyi akwa nke silicon carbide na ọkpụrụkpụ nke ihe dịka 100μm na-echekwa n'elu ngwaahịa site na usoro CVD. iji meziwanye nguzogide ikuku oxidation ya dị elu.
Oge nzipu: Feb-14-2023