Silikoni carbide imagwira ntchito ngati dayamondi. Sikuti ndi yopepuka kwambiri, komanso ndi yolimba kwambiri ya ceramic ndipo imakhala ndi kutentha kwabwino kwambiri, kutentha kochepa kumawonjezeka ndipo imalimbana kwambiri ndi ma acid ndi ma lye.
Ndi silicon carbide ceramics, zinthuzo zimakhalabe zokhazikika mpaka kutentha kopitilira 1,400°C. Modulus ya Young yapamwamba > 400 GPa imatsimikizira kukhazikika kwabwino kwambiri. Zinthuzi zimapangitsa kuti silicon carbide ikhale yokonzedweratu kuti igwiritsidwe ntchito ngati zinthu zomangira. Silicon carbide imagwira ntchito bwino kwambiri polimbana ndi dzimbiri, kusweka, ndi kukokoloka kwa nthaka. Zigawo zake zimagwiritsidwa ntchito m'mafakitale opanga mankhwala, mphero, zokulitsa ndi zotulutsa mpweya kapena ngati nozzles, mwachitsanzo.
"Mitundu ya SSiC (sintered silicon carbide) ndi SiSiC (silicon infiltrated silicon carbide) yakhazikika yokha. Yomalizayi ndi yoyenera kwambiri popanga zinthu zovuta kwambiri."
Silicon carbide ndi yotetezeka poizoni ndipo ingagwiritsidwe ntchito mumakampani azakudya. Ntchito ina yodziwika bwino ya zigawo za silicon carbide ndi ukadaulo wotseka pogwiritsa ntchito ma friction bearings ndi ma mechanical seals, mwachitsanzo mu mapampu ndi makina oyendetsa. Poyerekeza ndi zitsulo, silicon carbide imapereka mayankho otsika mtengo kwambiri okhala ndi zida zazitali zikagwiritsidwa ntchito ndi zida zamphamvu komanso zotentha kwambiri. Zida za silicon carbide ndizoyeneranso kugwiritsidwa ntchito m'mikhalidwe yovuta kwambiri popanga zinthu za ballistics, kupanga mankhwala, ukadaulo wamagetsi, kupanga mapepala komanso ngati zigawo za makina apaipi.
Kabide ya silicon yolumikizidwa ndi Reaction, yomwe imadziwikanso kuti silicon carbide ya siliconized kapena SiSiC, ndi mtundu wa silicon carbide yomwe imapangidwa ndi mankhwala omwe amapangidwa pakati pa kaboni woboola kapena graphite ndi silicon yosungunuka. Chifukwa cha zotsalira za silicon, silicon carbide yolumikizidwa ndi reaction nthawi zambiri imatchedwa silicon carbide ya siliconized, kapena chidule chake SiSiC.
Ngati silicon carbide yoyera imapangidwa pochotsa ufa wa silicon carbide, nthawi zambiri imakhala ndi mankhwala otchedwa sintering aids, omwe amawonjezedwa kuti athandizire njira yochotsera kutentha mwa kuchepetsa kutentha kwa sintering. Mtundu uwu wa silicon carbide nthawi zambiri umatchedwa sintered silicon carbide, kapena chidule chake ndi SSiC.
Ufa wa silicon carbide umapezeka kuchokera ku silicon carbide yopangidwa monga momwe tafotokozera mu nkhani ya silicon carbide.
（Viewed from: CERAMTEC）caroline@rbsic-sisic.com
Nthawi yotumizira: Novembala-12-2018