Na narị afọ nke 21, site na mmepe nke sayensị na teknụzụ, ozi, ike, ihe, injinia bayọlọji aghọwo ogidi anọ nke mmepe nke mmepụta mmekọrịta mmadụ na ibe ya taa, silicon carbide n'ihi ihe onwunwe kemịkalụ kwụsiri ike, njikwa okpomọkụ dị elu, ọnụọgụ mgbasa okpomọkụ nke obere, obere njupụta, ezigbo nguzogide iyi, ike dị elu, ike igwe dị elu, iguzogide nchara kemịkalụ na njirimara ndị ọzọ, mmepe ngwa ngwa n'ọhịa nke ihe, A na-ejikarị ya eme ihe na seramiiki bọọlụ bearing, valvụ, ihe semiconductor, gyro, ngwa nha, ikuku na ubi ndị ọzọ.
A na-emepụta seramiiki silicon carbide kemgbe afọ 1960. Na mbụ, a na-ejikarị silicon carbide eme ihe n'ihe eji akwọ ihe na ihe ndị na-adịghị mma. Mba niile n'ụwa na-etinye aka na mmepụta ihe nke seramiiki dị elu, ugbu a ọ bụghị naanị na ọ na-enwe afọ ojuju na nkwadebe nke seramiiki silicon carbide ọdịnala, mmepụta nke ụlọ ọrụ seramiiki dị elu na-etolite ngwa ngwa, karịsịa na mba ndị mepere emepe. N'afọ ndị na-adịbeghị anya, seramiiki ọtụtụ usoro dabere na seramiiki SIC apụtala otu mgbe, na-eme ka ike na ike nke ihe monomer dịkwuo mma. Isi ihe anọ e ji eme ihe na silicon carbide bụ seramiiki arụ ọrụ, ihe ndị na-adịghị mma, ihe ndị na-emebi ihe na ihe ndị e ji ígwè rụọ.
Seramiki silicon carbide nwere ezigbo nguzogide iyi
A mụọla ma chọpụta na ngwaahịa a bụ silicon carbide. Nguzogide iyi nke silicon carbide. Ngwaahịa a bụ ihe ruru ugboro 266 nke ígwè manganese, nke ruru ugboro 1741 nke ígwè chromium dị elu. Nguzogide iyi dị mma nke ukwuu. Ọ ka nwere ike ịchekwa anyị nnukwu ego. Enwere ike iji silicon carbide eme ihe mgbe niile ruo ihe karịrị afọ iri.
Seramiki silik carbide nwere ike dị elu, ike dị elu na ibu dị mfe
Dịka ụdị ihe ọhụrụ, iji seramiiki silicon carbide eme ihe ike ngwaahịa a dị oke elu, ike siri ike dị elu, ibu dịkwa oke ọkụ, seramiiki silicon carbide dị otú ahụ a na-eji, ntinye na nnọchi nke ihe ndị dị n'elu ga-adị mma karịa.
Mgbidi dị n'ime nke seramiiki silicon carbide dị ire ụtọ ma anaghị egbochi ntụ ntụ
Seramiki silikon carbide A na-agba ngwaahịa a ọkụ mgbe okpomọkụ dị elu gasịrị, yabụ nhazi nke seramiki silikon carbide dị oke njupụta, elu ya dị ire ụtọ, ịma mma ojiji ga-adị mma karịa, yabụ ejiri ya mee ihe n'ezinụlọ, ịma mma ahụ ga-adị mma karịa.
Ọnụ ego nke seramiiki silicon carbide dị ala
Ọnụ ego e ji emepụta seramiiki silicon carbide n'onwe ya pere mpe, yabụ anyị achọghị ịzụta ọnụ ahịa seramiiki silicon carbide dị oke ọnụ, yabụ maka ezinụlọ anyị, mana ọ nwekwara ike ịchekwa nnukwu ego.
Ngwa seramiiki silicon carbide:
Bọọlụ seramiiki silicon carbide
Bọọlụ seramiiki silicon carbide nwere ezigbo ihe eji arụ ọrụ, ezigbo iguzogide oxidation, oke nguzogide abrasion na obere oke esemokwu. A ga-ebelata ike okpomọkụ dị elu nke bọọlụ seramiiki silicon carbide, ike seramiiki nkịtị na ogo 1200 ~ 1400 Celsius, ike nkwekọ silicon carbide na ogo 1400 Celsius ka na-anọgide na-enwe n'ọkwa dị elu nke 500 ~ 600MPa, yabụ okpomọkụ ọrụ ya nwere ike iru ogo 1600 ~ 1700 Celsius.
Ihe mejupụtara silicon carbide
A na-eji ihe mejupụtara matrix silicon carbide (SiC-CMC) eme ihe nke ukwuu n'ọhịa ụgbọelu maka nhazi okpomọkụ dị elu ha n'ihi ike ha dị elu, ike dị elu na ezigbo iguzogide oxidation. Usoro nkwadebe nke SiC-CMC gụnyere nhazi eriri, ọgwụgwọ okpomọkụ dị elu, mkpuchi mesophase, njupụta matrix na ọgwụgwọ mgbe emechara ya. Eriri carbon dị elu nwere ike dị elu na ike dị mma, ahụ e ji ya mee nke e ji ya mee nwere ezigbo ihe eji arụ ọrụ.
Mkpuchi Mesophase (ya bụ, teknụzụ njikọ) bụ isi teknụzụ dị na usoro nkwadebe, nkwadebe nke ụzọ mkpuchi mesophase gụnyere osmosis vapor chemical (CVI), deposition chemical vapor deposition (CVD), usoro sol-sol (Sol-gcl), usoro mgbawa polymer impregnation (PLP), nke kachasị mma maka nkwadebe nke ihe mejupụtara silicon carbide matrix bụ usoro CVI na usoro PIP.
Ihe mkpuchi ihu dị n'etiti ihu gụnyere pyrolytic carbon, boron nitride na boron carbide, nke gụnyere boron carbide dị ka ụdị mkpuchi ihu dị n'etiti ihu ka a na-elebara anya nke ọma. SiC-CMC, nke a na-ejikarị eme ihe n'ọnọdụ oxidation ruo ogologo oge, kwesịkwara ka a gwọọ oxidation resistance, ya bụ, a na-etinye oyi akwa silicon carbide dị oke arọ nke ihe dị ka 100μm n'elu ngwaahịa ahụ site na usoro CVD iji melite oxidation resistance ya dị elu.
Oge ozi: Febụwarị-14-2023