Mechanism of sintering YAG/ZrB2 multiphase ceramics with spark plasma sintering

被引：10

作者：

Song, Jieguang ^{[1
]}

Li, Junguo ^{[1
]}

Song, Jianrong ^{[1
]}

Zhang, Lianmeng ^{[1
]}

机构：

[1] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synthesis & Proc, Wuhan 430070, Peoples R China

来源：

MATERIALS AND MANUFACTURING PROCESSES | 2008年 / 23卷 / 05期

基金：

中国国家自然科学基金;

关键词：

high-temperature materials; multiphase ceramics; relative density; sintering; YAG; ZrB2;

D O I：

10.1080/10426910802103825

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Although ZrB2 has some excellent performances, it is difficult to prepare the high relative-density ZrB2 ceramics, which limits the application of ZrB2 materials. To obtain higher relative-density ZrB2 ceramics for increasing the good oxidation resistance, YAG/ZrB2 multiphase ceramics is prepared with the spark plasma sintering, the sintering mechanism of preparing YAG/ZrB2 multiphase ceramic materials is investigated. Al2O3 reacts with Y2O3 to form YAG above 700 degrees C during the sintering process. YAG is filled and melted the space of ZrB2 particles to bind the ZrB2 particles during reaction and sintering process, which increases the density of YAG/ZrB2 multiphase ceramic materials. The YAG/ZrB2 multiphase ceramic materials was successfully prepared under sintering temperature of 1700 degrees C, holding temperature time for 4min, and sintering pressure of 20MPa; the density is 5.63g/cm(3), the relative density is 99.78%.

引用

页码：475 / 478

页数：4

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