Kodi pali kusiyana kotani pakati pa reaction bonded ndi sintered silicon carbide?

Pankhani ya silicon carbide ceramics, pali mitundu iwiri ikuluikulu: reaction bonded ndi sintered. Ngakhale mitundu yonse iwiri ya ceramics imapereka kukhazikika kwakukulu komanso kukana kuvala, pali kusiyana kwakukulu pakati pa ziwirizi.

Tiyeni tiyambe ndi zomangira zomangira za silicon carbide ceramics. Zoumbazi zili pakati pa 85% ndi 90% silicon carbide ndipo zimakhala ndi silicon. Kutentha kwawo kwakukulu ndi 1380 ° C. Chimodzi mwazabwino zazikulu zama ceramics opangidwa ndi silicon carbide ndikuti amatha kupangidwa molingana ndi kukula kwake ndi mawonekedwe ake. Izi zimawapangitsa kukhala zida zabwino zopangira zinthu zapadera komanso zamaluso. Kuphatikiza apo, kutsika kwapang'onopang'ono kwakukula komanso kukana kwabwino kwa ma ceramics awa kumawapangitsa kukhala chisankho chodziwika bwino pamsika wamphepo yamkuntho.

Sintered sintered silicon carbide imakhala ndi silicon carbide yapamwamba, yomwe imatha kufika kupitirira 99%, ndipo kutentha kwapamwamba kwambiri ndi 1650 ° C. Kukula kwina kwina kumayambika panthawi ya sintering, zomwe zimapangitsa SiC yosakanizidwa kuti ikhale yabwino popanga mbali zolondola za SiC. Chifukwa cha kulondola kwake, sintered silicon carbide yokhazikika nthawi zambiri imagwiritsidwa ntchito popanga nkhungu ndi magawo osamva bwino.

Kuphatikiza pa nkhungu zolondola komanso zobvala, zida zowotchera zam'mwamba zam'mafakitale zimatha kutenga mwayi pakukana kwapamwamba kwa kutentha kwa sintered silicon carbide. Kwa iwo omwe akufunafuna machubu osinthanitsa ndi kutentha kwa zida zawo zopangira mankhwala, silicon carbide yopanda kupanikizika ndiyosankhika bwino.

Nthawi zambiri, kulumikizana kwamphamvu komanso kusasunthika kosasunthika kwa zida zadothi za SiC, ngakhale chilichonse chili ndi zabwino ndi zovuta zake, ndizoyenera kumafakitale ndi ntchito zosiyanasiyana. Ngati mukufuna chinthu chapadera kapena chokulirapo chomwe chitha kupirira kuvala, zomangira zomangika za silicon carbide ceramics zitha kukhala chisankho choyenera kwa inu. Pazigawo zofewa kwambiri zomwe zimayenera kupirira kutentha kwambiri, sintered silicon carbide yosasunthika ikhoza kukhala yabwinoko. Ziribe kanthu mtundu wa silicon carbide ceramic yomwe mungasankhe, mutha kukhala ndi chidaliro kuti ikupatsani kukhazikika komanso kukhazikika kwa polojekiti yanu.