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Si₃N₄/[SiC+B₄C]复合陶瓷的制备与性能研究

Preparation and Mechanical Properties of Si₃N₄/[SiC+B₄C] Composite Ceramic

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【Author】 DENG Bin~1, HOU Yao-yong~2(1. Department of Chemistry, Xiangnan University, Chenzhou 423000,China;2.Applied Chemistry Department, Qingdao University of Science and Technology, Qingdao 266042,China)

【机构】湘南学院化学与生命科学系；青岛科技大学应用化学系湖南郴州423000；山东青岛266042；

【摘要】采用高分散、高稳定混合水悬浮液方法制备Si3 N4/ [SiC +B4C]复合陶瓷 ,研究了亚微米B4C含量对Si3 N4/ [SiC+B4C]复合陶瓷性能的影响以及断裂相变量与性能的关系 ,讨论了B4C应力诱导相变增韧机制与微米粒子强韧化机制迭加的可能性更多还原

【Abstract】 Methods of highly dispersed and stabilized mixing aqueous suspension were allied to prepare the Si₃N₄/[SiC+B₄C] composites. The effects of B₄C content on the properties of ceramics composites and the relationships between phase transformation volume during fracture and properties have been investigated. The possibility of add together the B₄C（α） transformation toughened and particle strength-toughened mechanisms were discussed.更多还原