Celsian formation in Si3N4–Ba0.75Sr0.25Si2Al2O8 composites
Celsian formation in Si3N4–Ba0.75Sr0.25Si2Al2O8 composites
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DOI：
10.1016/j.scriptamat.2008.11.034
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发表时间：
2009-03
影响因子：
6
通讯作者：
L. Limeng;Ye Feng;Zhang Haijiao;Y. Jie;Z. Zhiguo
中科院分区：
文献类型：
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作者：
L. Limeng;Ye Feng;Zhang Haijiao;Y. Jie;Z. Zhiguo
在Ba0.75Sr0.25Al2Si2O8（BSAS）溶胶-凝胶玻璃粉末和50 wt.%（质量分数）的Ba0.75Sr0.25Al2Si2O8溶胶-凝胶玻璃粉末中，采用低温热压法制备了Si 3 N4颗粒增强BSAS复合材料。结果表明，钡长石的形成取决于Si 3 N4的多晶型。α-Si_3N_4向β-Si_3N_4的转变阻碍了六方晶系向钡长石的转变。
The formation of monoclinic celsian in Ba0.75Sr0.25Al2Si2O8(BSAS) sol–gel glass powder and in 50wt.% Si3N4particle-reinforced BSAS composites fabricated by a low-temperature hot pressing was investigated. Results indicated that celsian formation depended on the polymorphs of the Si3N4. Hexacelsian to celsian transformation was impeded when the α- to β-Si3N4phase transformation occurred.