Si3N4-SiC Njerwa

Izi zidayamba kuoneka kumapeto kwa zaka za m'ma 1960, ndipo mawonekedwe ake ndikuti amagwiritsa ntchito Si3N4 ngati chomangira. Si3N4 ilipo pakati pa njere za SiC mu mawonekedwe a singano kapena makhiristo a fibrous, ndipo ndi mtundu watsopano wofunikira wa zinthu zotsutsa. Nthawi zambiri imakhala ndi 70% mpaka 75% silicon carbide ndi 18% mpaka 25% ya silicon nitride. Ili ndi kukana bwino kwa dzimbiri, 1400 ℃ flexural mphamvu ya 50 mpaka 55MPa, komanso porosity yowonekera ya 15%. Kukula kokwanira kwamafuta (4.5 mpaka 5.0) × 10-2℃-1. Zimakonzedwa ndi njira yotentha kwambiri ya sintering. Amagwiritsidwa ntchito makamaka pakuphulika kwa ng'anjo yamoto ndi aluminium electrolytic cell lining. M'zaka zaposachedwa, kampani yathu yagwiritsa ntchito njerwa za silicon nitride zomangirira silicon carbide kukamwa pakamwa pa ng'anjo yamoto ndi thumba lamadzi la silicon, zomwe zimathandizira kwambiri moyo wang'anjo ndi moyo wautumiki wa thumba lamadzi la silicon.