Fabrication and properties of ZrB2-SiC-BN machinable ceramics
作者： Haitang Wu , Weigang Zhang
DOI: 10.1016/J.JEURCERAMSOC.2009.09.022
关键词: Borosilicate glass 、 Microstructure 、 Materials science 、 Flexural strength 、 Boron nitride 、 Ceramic 、 Zirconium 、 Composite number 、 Zirconium diboride 、 Composite material
摘要: ZrB2–SiC–BN ceramics were fabricated by hot-pressing under argon at 1800° C and 23MPa pressure. The microstructure, mechanical and oxidation resistance properties of the composite were investigated. The flexural strength and fracture toughness of ZrB2–SiC–BN (40vol% ZrB2–25vol% SiC–35vol% BN) composite were 378MPa and 4.1 MPam1/2, respectively. The former increased by 34% and the latter decreased by 15% compared to those of the conventional ZrB2–SiC (80vol% ZrB2–20vol% SiC). Noticeably, the hardness …
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