Ma muli o kona mau waiwai kino maikaʻi, ua hoʻohana nui ʻia ka silicon carbide sintered reaction-sintered ma ke ʻano he mea maka kemika nui. ʻEkolu ʻano o kona ʻano noi: no ka hana ʻana i nā abrasives; Hoʻohana ʻia e hana i nā ʻāpana hoʻomehana kū'ē - silicon molybdenum rod, silicon carbon tube, etc.; No ka hana ʻana i nā huahana refractory. Ma ke ʻano he mea refractory kūikawā, hoʻohana ʻia ia i ka hao a me ke kila e like me ka umu hao hao, cupola a me nā hana stamping ʻē aʻe, corrosion, hōʻino i ke kūlana ikaika o nā huahana fireproof; I loko o nā metala kakaikahi (zinc, alumini, keleawe) smelters no ka hoʻoheheʻe ʻana i ka umu umu, ka paipu conveyor metala hoʻoheheʻe, ka mea kānana, ka ipu clamp, etc.; A me ka ʻenehana ākea e like me ka nozzle huelo mīkini stamping, ka pahi turbine kinoea kūlohelohe kiʻekiʻe mau; I ka ʻoihana silicate, he nui e like me nā ʻano hale kiln ʻoihana, ka pahu pahu kū'ē umu, saggar; I ka ʻoihana kemika, hoʻohana ʻia ia e like me ka hana kinoea, carburetor aila maka, ka umu desulfurization kinoea flue a pēlā aku.
ʻO ka hoʻohana maʻemaʻe ʻana o nā huahana hana α-SiC, ma muli o kona ikaika nui, he mea paʻakikī loa ke wili iā ia i loko o ka pauka nanoscale ultrafined, a ʻo nā ʻāpana he mau papa a i ʻole nā fibers, i hoʻohana ʻia e wili i loko o ka compact, ʻoiai i ka hoʻomehana ʻana i kona mahana decomposition a puni, ʻaʻole e hana i kahi pelu maopopo loa, ʻaʻole hiki ke sintered, haʻahaʻa ka pae densification o nā huahana, a ʻilihune ke kūpaʻa oxidation. No laila, i ka hana ʻoihana o nā huahana, hoʻohui ʻia kahi liʻiliʻi o ka particulate matter spherical β-SiC ultrafine powder i ka α-SiC a me ke koho ʻana o nā mea hoʻohui e loaʻa ai nā huahana density kiʻekiʻe. Ma ke ʻano he mea hoʻohui no ka hoʻopili ʻana i ka huahana, e like me ke ʻano hiki ke hoʻokaʻawale ʻia i nā oxides metala, nā hui nitrogen, graphite maʻemaʻe kiʻekiʻe, e like me ka lepo, ka alumini oxide, zircon, zirconium corundum, ka pauka lime, ke aniani laminated, silicon nitride, silicon oxynitride, graphite maʻemaʻe kiʻekiʻe a pēlā aku. Hiki i ka hopena wai o ka mea hoʻopili hoʻokumu ke lilo i hoʻokahi a ʻoi aku paha o ka hydroxymethylcellulose, acrylic emulsion, lignocellulose, tapioca starch, alumini oxide colloidal solution, silicon dioxide colloidal solution, a pēlā aku. Wahi a ke ʻano o nā mea hoʻohui a me ka ʻokoʻa o ka nui o ka hoʻohui, ʻaʻole like ka mahana kuni o ka compact, a ʻo ka pae mahana he 1400 ~ 2300 ℃. No ka laʻana, α-SiC70% me ka hoʻolaha nui o ka ʻāpana ma mua o 44μm, β-SiC20% me ka hoʻolaha nui o ka ʻāpana ma lalo o 10μm, pālolo 10%, me 4.5% lignocellulosic solution 8%, i hui like ʻia, i hana ʻia me ke kaomi hana 50MPa, i puhi ʻia i ka lewa ma 1400 ℃ no 4h, ʻO ka density apparent o ka huahana he 2.53g/cm3, ʻo ka porosity apparent he 12.3%, a ʻo ka ikaika tensile he 30-33mpa. Ua helu ʻia nā waiwai sintering o kekahi mau ʻano huahana me nā mea hoʻohui like ʻole ma ka Papa 2.
Ma keʻano laulā, loaʻa i nā refractories silicon carbide i hoʻopili ʻia i ka hopena nā waiwai kiʻekiʻe ma nā ʻano āpau, e like me ka ikaika compressive ikaika, ke kūpaʻa haʻalulu wela ikaika, ke kūpaʻa ʻaʻahu maikaʻi, ka conductivity thermal ikaika a me ke kūpaʻa corrosion solvent ma luna o kahi ākea wela. Eia nō naʻe, pono e ʻike ʻia hoʻi ʻo kona hemahema ʻo ia ka hopena antioxidant maikaʻi ʻole, kahi e hoʻonui ai i ka nui a me ka deformation i ke kaiapuni wela kiʻekiʻe e hōʻemi i ke ola lawelawe. I mea e hōʻoia ai i ke kūpaʻa oxidation o nā refractories silicon carbide i hoʻopili ʻia i ka hopena, ua hana ʻia ka nui o nā hana koho ma ka papa hoʻopaʻa. ʻO ka hoʻopili ʻana o ka lepo (loaʻa nā oxides metala) fusion, akā ʻaʻole i hāʻawi i kahi hopena buffer, aia nō nā ʻāpana silicon carbide i ka oxidation ea a me ka corrosion.
Ka manawa hoʻouna: Iune-21-2023