Carbide silicon nke a na-akpọ "Reaction-sinted silicon carbide" bụ ụdị seramiiki ọgbara ọhụrụ, nke nwere ike dị elu, ike dị elu, ezigbo nguzogide iyi na iguzogide nchara, a na-ejikwa ya nke ọma na igwe, petrochemical, eletrọniki, aerospace na mpaghara ndị ọzọ. Ngwaahịa a nwere ihe mkpuchi carbon ojii, graphite na ihe mgbakwunye dị iche iche, na-eji usoro ịpị akọrọ, mpụta ma ọ bụ ịwụsa mmiri mee ka ọ dị mma, wee soro ya iji ghọta usoro mmepụta nke sintering silicon carbide!
Ihe mepụtara sintering silicon carbide nke na-emegharị ahụ bụ atụmatụ teknụzụ tozuru oke mgbe onye mepụtara ya nwalere ọtụtụ puku afọ iji kwalite usoro ihe eji emepụta ihe na usoro mmepụta, ọkachasị usoro sintering pụrụ iche na-aga n'ihu.
N'okwu nke mbụ nke ihe mepụtara a, akụkụ dị arọ nke ntụ silicon carbide bụ akụkụ 5-8, carbon black bụ akụkụ 0.5-1.5, graphite bụ akụkụ 1-1.5, na ihe njikọ bụ akụkụ 0.1-0.5. N'ime ha, gradient nha ọka nke silicon carbide bụ akụkụ sic (90-30m) akụkụ 3-5, sic) akụkụ 30-0.8m) akụkụ 2-3. E tinyere methyl cellulose na ntụ PVA nke gazelle n'ime mmiri kwesịrị ekwesị akụkụ 0.1-0.5 n'otu n'otu, e wee nweta ngwọta doro anya mgbe e kpochara ya ọkụ.
1. Gwakọta ụdị ntụ ntụ niile, ihe mmado na ihe ngwọta dị iche iche a kwadebere dịka usoro ahụ si dị ma gwakọta ya nke ọma.
2, hichaa ihe e ji ebu ihe e ji eme ihe, ruo 0.1Mpa, tinye nrụgide n'ime ihe e ji gwakọta ihe. Mgbe oge ụfọdụ gasịrị, a ga-ahapụ ihe e ji gwakọta ihe ahụ ma wepụ ihe e ji kpuchie ya. Debe ya na okpomọkụ nke 30-70 ruo awa 18-20 maka ịkpọ nkụ.
3. Bee ihe e ji ese ihe ahụ dịka ihe osise ahụ chọrọ si dị.
4, tinye ihe na-eme ka ihe na-eme ka ihe na-eme ka ihe na-eme ka ihe na-eme ka ọ dị ọkụ n'ime ọkụ ahụ, tinye ihe dị ka akụkụ 1-3 nke silikọn ígwè, ihe na-eme ka ihe na-eme ka ihe dị ọcha ghara ịdị. A na-ekewa usoro a n'ime obere okpomọkụ 0-700, a na-echekwa ya ruo awa 3-5; Ọkwa dị n'etiti 700-1400, a na-echekwa ya ruo awa 4-6; A na-echekwa ya n'elu okpomọkụ 1400-2200 maka awa 5-7. A na-ebelata okpomọkụ dị n'okpuru 150, kwụsị ọkụ ahụ ma mepee ọkụ ahụ.
5, ọgwụgwọ ájá na-egweri ihe mkpuchi silicon n'elu ngwaahịa, yana igwe na-egweri ájá.
6, ngwaahịa ọgwụgwọ oxidation n'ime ọkụ oxidation, awa 24 ruo 1350, oyi eke. Wepụta, lelee ma tinye ya n'ebe nchekwa.
Ihe ndị e ji emepụta ihe na oke ha na-eji eme ihe bụ nke sayensị ma bụrụkwa nke ezi uche dị na ya, nke mere na oghere ahụ nwere oghere zuru oke, oghere ahụ nwekwara njupụta ka mma; Ọkwa okpomọkụ ka mma, okpomọkụ na oge ijide ihe na-eme ka ngwaahịa ahụ sie ike nke ukwuu. Ọrụ na ịdị mma nke usoro a erutela ọkwa dị elu nke mba ụwa. Ihe ngosi ya bụ isi bụ ndị a
Mmejuputa nke silikọn carbide nke na-eme ka mmeghachi omume sintering pụta
Usoro 1 maka imepụta ngwugwu silikọn carbide e ji ihe ndị na-eme ka mmeghachi omume dị nro:
1, ihe eji arụ ọrụ iji were ibu nke 0.3 akụkụ nrapado, tinye obere mmiri nke ọma gwakọta ya, ibu nke akụkụ 6.8 nke ntụ ọka silicon carbide (nha nke akụkụ 90-30m nke akụkụ 3.8, 30-0.8m nke akụkụ 3), ojii carbon 1 akụkụ, ojii
2. Mgbe ị na-awụsa ihe, buru ụzọ hichaa ihe e ji mee ihe, dozie ihe e ji mee ihe, tinye ihe njide ya, dọpụta ihe e ji mee ihe na tankị ahụ na nrụgide, jupụta tank ahụ na nitrogen nrụgide 0.1Mpa, mee ka ọ wụfuo nrụgide, ma tinye ihe e ji mee ihe ahụ n'ime ebu ahụ. Mgbe o ruru otu awa, a ga-ahapụ ihe e ji mee ihe ahụ, mgbe awa isii gachara, a ga-ewepụ ihe e ji mee ihe ahụ, a ga-ewepụkwa ya n'ime ụlọ nkụcha ahụ. 30-70, awa 18-20 iji wepụ ya. 3. Mgbe ị na-arụzi ihe e ji mee ihe ahụ, buru ụzọ lelee ma ihe e ji mee ihe ahụ ò ruru ihe achọrọ. Mgbe ị na-emezu ihe achọrọ, rụzie ihe e ji mee ihe ahụ dịka eserese si dị. Mgbe ị lechara ya anya, ziga ya n'ime ụlọ nkụcha dị elu.
4. Mgbe mmiri nke sintering billet ahụ ruru 1%, wepụ ya, hichaa billet ahụ site na iji ikuku na-efe efe ma tụọ ya. Tinye akụkụ 2.9 nke silicon metal. Enwere ike itinye nitrogen n'ime sintering vacuum. Usoro sintering na obere okpomọkụ 700 maka awa 4; Ọkara okpomọkụ 1400, awa 5; Oke okpomọkụ 2200, awa 6. Mgbe okpomọkụ dara awa 12 ma ruo 150, kwụsị ọrụ na ọkụ ahụ wee mepee ọkụ ahụ.
5. Mgbe ngwaahịa ọgwụgwọ ájá pụtasịrị, a na-agweri ọkọlọtọ silicon Chartered dị n'elu ya ma jiri ájá gwerie ya.
6. Ebumnuche nke ngwaahịa ọgwụgwọ oxidation bụ iwepụ oxides ndị e mepụtara n'oge usoro sintering. A na-ekpo ọkụ ngwaahịa ahụ ruo 1350 ruo awa 24 n'ime oven oxidation wee jụọ oyi n'ụzọ ebumpụta ụwa. Mgbe ewepụsịrị ya, a na-etinye ya n'ebe nchekwa site na nyocha.
Ihe ndị e ji emepụta ihe na oke ha na-eji eme ihe bụ nke sayensị ma dịkwa mma, nke mere na oghere ahụ nwere oghere zuru oke, oghere ahụ nwekwara njupụta ka mma; Ọkwa okpomọkụ ka mma, okpomọkụ na oge ijide ihe na-eme ka ngwaahịa ahụ sie ike nke ukwuu. Ọrụ na ịdị mma nke ngwaahịa ndị e ji usoro a mepụta erutela ọkwa dị elu nke mba ụwa.
Nke dị n'elu bụ usoro mmepụta nke silikọn carbide na-emegharị ahụ, ọ bụrụ na ịchọrọ ozi ndị ọzọ, biko nweere onwe gị ịkpọtụrụ anyị!
Oge ozi: Jun-13-2023