Ma muli o kāna mau waiwai kino maikaʻi, ua hoʻohana nui ʻia ka reaction-sintered silicon carbide ma ke ʻano he mea kemika nui. ʻEkolu mau hiʻohiʻona kona laulā o ka noi: no ka hana ʻana i nā abrasives; Hoʻohana ʻia e hana i nā ʻāpana hoʻomehana kūʻē - silicon molybdenum rod, silicon carbon tube, etc.; No ka hana ʻana i nā huahana refractory. Ma keʻano he mea refractory kūikawā, hoʻohanaʻia ia i ka hao a me ke kila hoʻoheheʻeʻia e like me ke kapuahi hao, cupola a me nā hana stamping, corrosion, pōʻino i ke kūlana ikaika o nā huahana pale ahi; I loko o nā metala kakaʻikahi (zinc, aluminika, keleawe) nā mea hoʻoheheʻe no ka hoʻoheheʻe ʻana i ka umu hoʻoheheʻe, hoʻoheheʻe ʻia ka paipu conveyor mea hoʻoheheʻe, ka mea kānana, ka ipu hao, etc.; A me ka ʻenehana lewa ma ke ʻano he nozzle huelo huelo, hoʻomau ʻia ka wela kiʻekiʻe kūlohelohe kinoea turbine blade; I loko o ka silicate 'oihana, he nui e like me ke 'ano o ka 'oihana kiln hookahe, pahu type pale kapuahi uku, saggar; I ka ʻoihana kemika, hoʻohana ʻia ia e like me ka hana kinoea, ka ʻaila carburetor, ka umu ahi desulfurization a pēlā aku.
ʻO ka hoʻohana maʻemaʻe o nā huahana hana α-SiC, ma muli o kona ikaika nui, paʻakikī loa e wili iā ia i loko o ka pauka ultrafined nanoscale, 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 decomposition. ʻO ka mahana a puni, ʻaʻole ia e hoʻohua i kahi peʻe ʻike maopopo loa, ʻaʻole hiki ke sintered, haʻahaʻa ka pae densification o nā huahana, a ʻilihune ka pale ʻana o ka oxidation. No laila, i ka hana ʻenehana o nā huahana, ua hoʻohui ʻia kahi mea liʻiliʻi o ka particulate spherical β-SiC ultrafine pauka i ka α-SiC a me ke koho ʻana i nā mea hoʻohui e loaʻa ai nā huahana kiʻekiʻe. Ma keʻano he mea hoʻohui no ka hoʻopaʻa ʻana o ka huahana, e like me ke ʻano hiki ke hoʻokaʻawale ʻia i nā oxides metala, nā pūhui nitrogen, graphite maʻemaʻe kiʻekiʻe, e like me ka pālolo, alumini oxide, zircon, zirconium corundum, lime pauka, aniani laminated, silicon nitride, silicon oxynitride, kiʻekiʻe. graphite maemae a pela aku. Hiki ke hoʻokahi aʻoi aʻe paha o ka hydroxymethylcellulose, acrylic emulsion, lignoscellulose, tapioca starch, alumini oxide colloidal solution, silicon dioxide colloidal solution, etc. ʻAʻole like ka mahana puhi o ka compact, a ʻo ka pae wela he 1400 ~ 2300 ℃. No ka laʻana, ʻo α-SiC70% me kahi puʻupuʻu nui o ka nui ma mua o 44μm, β-SiC20% me kahi puʻupuʻu nui o ka liʻiliʻi ma lalo o 10μm, pālolo 10%, a me 4.5% lignoscellulosic solution 8%, hui pū ʻia, hana ʻia me 50MPa hana. kaomi, puhi ʻia i ka lewa ma 1400 ℃ no 4h, ʻO ka mānoanoa o ka huahana 2.53g/cm3, ʻo ka porosity ʻike ʻia he 12.3%, a ʻo ka ikaika tensile he 30-33mpa. ʻO nā waiwai sintering o nā ʻano huahana me nā mea hoʻohui like ʻole i helu ʻia ma ka Papa 2.
Ma keʻano laulā, loaʻa nā waiwai kiʻekiʻe kiʻekiʻe ma nā ʻano āpau o ka reaction-sintered silicon carbide refractories, e like me ka ikaika compressive ikaika, ikaika thermal shock resistance, maikaʻi ʻaʻahu kūpaʻa, ikaika thermal conductivity a me ka solvent corrosion kūpaʻa ma luna o kahi ākea ākea. Eia nō naʻe, pono e ʻike ʻia ʻo kona hemahema ʻo ia ka hopena antioxidant ʻilihune, ka mea e hoʻonui ai i ka leo a me ka deformation i ke kaiapuni kiʻekiʻe e hōʻemi i ke ola lawelawe. I mea e hōʻoia ai i ka pale ʻana o ka oxidation o ka reaction-sintered silicon carbide refractory, nui nā hana koho i hana ʻia ma ka papa hoʻopaʻa. ʻO ka hoʻohana ʻana i ka pālolo (loaʻa nā mea metala) fusion, akā ʻaʻole i hāʻawi i kahi hopena hoʻopaʻa, paʻa mau nā ʻāpana silicon carbide i ka ea oxidation a me ka corrosion.
Ka manawa hoʻouna: Iune-21-2023