Kedu ka esi emepụta silicon carbide mmeghachi omume?

mmeghachi omume sintering silicon carbide bụ ụzọ dị mkpa iji mepụta ihe seramiiki dị elu. Usoro a na-eji ọgwụgwọ okpomọkụ nke ikuku carbon na silicon na okpomọkụ dị elu iji mee ka ha meghachi omume na-emepụta seramiki silicon carbide.

1. Nkwadebe nke akụrụngwa. Ngwa ngwa nke silicon carbide mmeghachi omume na-agụnye isi iyi carbon na isi iyi silicon. Isi iyi carbon na-abụkarị carbon ojii ma ọ bụ polymer nwere carbon, ebe isi iyi silicon bụ silica powdered. Ekwesịrị ịgwepịa akụrụngwa ndị a, kpuchie ma gwakọta ya iji hụ na nha nha nha nha, ebe ha na-achịkwa ihe mejupụtara kemịkalụ ha iji nweta ceramik silicon carbide dị elu n'oge ọgwụgwọ okpomọkụ.

2. Ụdị. Tinye akụrụngwa agwakọtara n'ime ihe ịkpụzi maka ịkpụzi. Enwere ọtụtụ ụzọ eji akpụzi, nke a na-ejikarị bụ ịkpụzi akwụkwọ akụkọ na ịkpụzi injection. Ịkpụzi ihe ọkụkụ bụ mkpakọ nke ntụ ntụ n'okpuru nrụgide ka ọ mepụta, ebe ịkpụzi injection bụ akụrụngwa agwakọta ya na nrapado, a na-efesa ya n'ime ihe site na sirinji ka ọ mepụta. Mgbe emechara, ọ dị mkpa ịme ọgwụgwọ mgbawa iji wepụ seramiiki billet si na ebu.

3. ọgwụgwọ okpomọkụ. A na-etinye ahụ seramiiki a kpụrụ akpụ n'ime ọkụ ọgwụgwọ okpomọkụ maka ịmegharị. A na-ekewa usoro nhazi ahụ ụzọ abụọ: carbonization stage na sintering stage. Na ọkwa carbonization, ahụ seramiiki na-ekpo ọkụ na oke okpomọkụ (na-adịkarị karịa 1600 Celsius) n'okpuru ikuku ikuku, na isi iyi carbon na-emeghachi omume na isi iyi silicon iji mepụta silicon carbide. N'ebe a na-agbagharị agbagharị, a na-ebuli okpomọkụ na elu okpomọkụ (na-emekarị n'elu 1900 Celsius C), nke na-akpata recrystallization na densification n'etiti silicon carbide particles. N'ụzọ dị otú a, njupụta nke silicon carbide ahụ na-akawanye mma, ebe ike na eyi iguzogide na-na-butere mma.

4. Emecha. Ọ dị mkpa ka emechaa ahụ seramiiki siri ike iji nweta ọdịdị na nha achọrọ. Ụzọ mmecha na-agụnye ịkụcha ihe, ịkpụ, mkpọpu ihe, wdg N'ihi oke siri ike nke silicon carbide ihe, ọ na-esiri ike imecha, na-achọ iji ngwá ọrụ na-egweri dị elu na ngwa nhazi.

Na nchịkọta, usoro mmepụta nke mmeghachi omume-sintered silicon carbide gụnyere nkwadebe nke akụrụngwa, ịkpụzi, ọgwụgwọ okpomọkụ na imecha. N'ime ha, isi ihe bụ usoro ọgwụgwọ okpomọkụ, njikwa ya dị oke mkpa iji nweta ihe ndị dị elu nke silicon carbide. Ọ dị mkpa ijikwa okpomọkụ, ikuku, ijide oge na ihe ndị ọzọ nke ọgwụgwọ okpomọkụ iji hụ na mmeghachi omume zuru ezu, crystallization zuru ezu na njupụta dị elu.

Uru nke mmeghachi omume mmeghachi omume nke silicon carbide mmepụta bụ na ihe seramiiki nwere ike siri ike, ike dị elu, akwa mkpuchi mkpuchi na nkwụsi ike dị elu nwere ike ịkwadebe. Ihe a na-eme ọ bụghị nanị na ọ nwere ihe ndị dị mma na-arụ ọrụ, kamakwa ọ nwere ezigbo nguzogide corrosion na nnukwu okpomọkụ. Enwere ike iji ihe ndị na-emepụta silicon carbide mepụta akụkụ dị iche iche nke injinia, akara igwe, ngwaọrụ ọgwụgwọ okpomọkụ, seramiki ọkụ na ihe ndị ọzọ. N'otu oge ahụ, a pụkwara iji silicon carbide ihe na semiconductor, ike anyanwụ, ihe magnetik na mpaghara ndị ọzọ.

Na nkenke, mmeghachi omume sintering silicon carbide bụ ụzọ dị mkpa iji kwadebe ihe seramiiki dị elu. Usoro mmepụta chọrọ njikwa dị mma nke njikọ ọ bụla iji nweta ihe dị elu silicon carbide. Ihe ndị silicon carbide na-emeghachi omume nwere akụrụngwa akụrụngwa dị mma, nguzogide corrosion na akụrụngwa okpomọkụ dị elu, ma nwee atụmanya ngwa dị ukwuu na mpaghara ụlọ ọrụ mmepụta ihe na sayensị dị iche iche.