發(fā)布時(shí)間：2018-07-03 04:37

  本文選題：反應(yīng)燒結(jié) + 碳化硅陶瓷　； 參考：《硅酸鹽通報(bào)》2017年02期

【摘要】：研究了脫膠溫度、加硅量、升溫速率及重?zé)螖?shù)對反應(yīng)燒結(jié)碳化硅陶瓷金相組織、體積密度、力學(xué)性能和微觀結(jié)構(gòu)的影響。結(jié)果表明:經(jīng)800℃脫膠,硅與碳化硅生坯的質(zhì)量比為0.9∶1,升溫速率為1.0℃/min時(shí),反應(yīng)燒結(jié)碳化硅陶瓷產(chǎn)品的性能最好,體積密度為3.09 g/cm~3,維氏硬度為26.82 GPa,彎曲強(qiáng)度為388 MPa,斷裂韌性為4.49MPa·m~(1/2)。對滲硅不充分的不合格品進(jìn)行重?zé)梢杂行岣弋a(chǎn)品的致密度和力學(xué)性能,但是,重?zé)螖?shù)過多會(huì)引起晶粒粗化,從而導(dǎo)致力學(xué)性能下降。
[Abstract]:The effects of degumming temperature, amount of silicon added, heating rate and times of refiring on the microstructure, bulk density, mechanical properties and microstructure of reactive sintering silicon carbide ceramics were studied. The results show that when the mass ratio of silicon to silicon carbide is 0.9: 1, and the heating rate is 1.0 鈩，

本文編號(hào)：2092420