N'ihi njirimara anụ ahụ ya dị mma, silicon carbide na-emeghachi omume ka ejirila ya mee ihe dị ka nnukwu akụrụngwa akụrụngwa. Usoro nke ngwa ya nwere akụkụ atọ: maka mmepụta nke abrasives; A na-eji emepụta ihe ndị na-ekpo ọkụ na-eguzogide - mkpanaka silicon molybdenum, silicon carbon tube, wdg; Maka imepụta ngwaahịa refractory. Dị ka ihe pụrụ iche refractory ihe, ọ na-eji ígwè na ígwè na-agbaze dị ka ígwè mgbawa ọkụ, cupola na ndị ọzọ stamping nhazi, corrosion, mebiri emebi ọnọdụ siri ike nke fireproof ngwaahịa; N'ime igwe na-adịghị ahụkebe (zinc, aluminom, ọla kọpa) smelters maka ịgbaze ọkụ ọkụ, ọkpọkọ ebu igwe a wụrụ awụ, ngwaọrụ nzacha, ite mwekota, wdg; Na ohere teknụzụ dị ka stamping engine ọdụ nozulu, na-aga n'ihu elu okpomọkụ eke gas turbine agụba; N'ime ụlọ ọrụ silicate, ọtụtụ dị ka ihe dị iche iche nke ụlọ ọrụ mmepụta ihe, ụgwọ ọkụ ọkụ na-eguzogide ụdị igbe, saggar; Na chemical ụlọ ọrụ, ọ na-eji dị ka gas ọgbọ, crude mmanụ carburetor, flue gas desulfurization ọkụ na na.
Iji dị ọcha nke α-SiC n'ichepụta ngwaahịa, n'ihi na ya dịtụ nnukwu ike, ọ na-esi nnọọ ike na-egweri ya n'ime nanoscale ultrafined ntụ ntụ, na ahụ bụ efere ma ọ bụ eriri, na-eji na-egweri n'ime kọmpat, ọbụna na kpo oku na ya decomposition. okpomọkụ dị gburugburu, agaghị emepụta mpịachi doro anya, enweghị ike ịmegharị ya, ọkwa densification nke ngwaahịa dị ala, na nkwụsị nke oxidation adịghị mma. Ya mere, na mmepụta mmepụta ihe nke ngwaahịa, a na-agbakwunye obere ihe dị iche iche nke β-SiC ultrafine ntụ ntụ na α-SiC na nhọrọ nke mgbakwunye iji nweta ngwaahịa dị elu. Dị ka ihe mgbakwunye maka ngwaahịa bonding, dị ka ụdị nwere ike kewaa metal oxides, nitrogen ogige, elu ịdị ọcha graphite, dị ka ụrọ, aluminum oxide, zircon, zirconium corundum, lime ntụ ntụ, laminated iko, silicon nitride, silicon oxynitride, elu. graphite dị ọcha na ihe ndị ọzọ. The aqueous ngwọta nke akpụ nrapado nwere ike ịbụ otu ma ọ bụ karịa nke hydroxymethylcellulose, acrylic emulsion, lignocellulose, tapioca starch, aluminum oxide colloidal ngwọta, silicon dioxide colloidal ngwọta, wdg Dị ka ụdị ihe mgbakwunye na ihe dị iche na ego nke mgbakwunye. ọkụ ọkụ ọkụ nke kọmpat abụghị otu, na ọnọdụ okpomọkụ dị 1400 ~ 2300 ℃. Dị ka ihe atụ, α-SiC70% na a urughuru size nkesa nke ihe karịrị 44μm, β-SiC20% na a urughuru size nkesa nke na-erughị 10μm, ụrọ 10%, gbakwunyere 4.5% lignocellulosic ngwọta 8%, evenly mbuaha, kpụrụ na 50MPa ọrụ. mgbali, chụọ n'ọrụ na ikuku na 1400 ℃ maka 4h, O doro anya njupụta nke ngwaahịa bụ 2.53g/cm3, porosity pụtara ìhè bụ 12.3%, na ike ike bụ 30-33mpa. A na-edepụta ihe nrụpụta nke ụdị ngwaahịa dị iche iche nwere mgbakwunye dị iche iche na tebụl 2.
N'ozuzu, mmeghachi omume-sintered silicon carbide refractories nwere àgwà dị elu n'akụkụ niile, dị ka ike mkpakọ ike, ike thermal ujo eguzogide, ezigbo eyi iguzogide, ike thermal conductivity na ihe mgbaze corrosion iguzogide n'elu a mbara okpomọkụ nso. Otú ọ dị, e kwesịkwara ịhụ na ihe ọjọọ ya bụ na mmetụta antioxidant adịghị mma, nke na-eme ka mgbasawanye olu na nrụrụ na ọnọdụ okpomọkụ dị elu iji belata ndụ ọrụ. Iji hụ na nguzogide oxidation nke mmeghachi omume-sintered silicon carbide refractories, a na-arụ ọtụtụ ọrụ nhọrọ na oyi akwa njikọ. Ngwa nke ụrọ (nke nwere metal oxides) fusion, ma enyeghị mmetụta nchekwa, silicon carbide particles ka na-edobe ikuku oxidation na corrosion.
Oge nzipu: Jun-21-2023