真空电子技术Issue(5)：27-32,76,7.
直接发泡法制备ZrO2纤维增强的ZrO2闭孔泡沫陶瓷
Preparation of Zirconia Fiber Reinforced Closed Porosity Foam Zirconia Ceramic by Direct Foaming Method
代德美 1刘和义 1吴哲 2刘聪1
作者信息
- 1. 南京理工大学材料科学与工程学院,江苏南京210094
- 2. 江苏和腾热工装备科技有限公司,江苏张家港215600
- 折叠
摘要
Abstract
Zirconia fiber reinforced closed porosity foam zirconia ceramic was prepared by using cubic zireonia powder as matrix,cubic zirconia fiber as reinforcement and polyvinyl alcohol solution as viscous agent.The process of foaming and freezing was realized by the reaction of zirconium oxychloride with hydrogen peroxide.The samples were characterized by SEM,XRD,thermal conductivity tester,high-temperature resistance tester and mechanical property tester.The effects of the addition amount of foaming agent,zirconia fiber and viscous agent on the properties of ceramic were discussed.The result shows that when the mass ratio of zirconia powder:zirconia fiber ∶ zirconium oxychloride ∶ hydrogen peroxide ∶ polyvinyl alcohol=1 ∶ 0.31～0.55 ∶ 0.04～0.06 ∶ 0.15～0.20 ∶ 0.01～0.02,the properties of ceramic are relatively good.The porosity is about 80％,the density is about 1.25 g/cm3,the thermal conductivity coefficient is about 0.09 W/(m·K),the permanent liner shrinkage at 1700℃/12 h is about 1％,and the bending strength is about 114 MPa.关键词
ZrO2闭孔泡沫陶瓷/ZrO2纤维增强/直接发泡法Key words
Closed porosity foam zirconia ceramic/Zirconia fiber reinforcement/Direct foaming method分类
化学化工引用本文复制引用
代德美,刘和义,吴哲,刘聪..直接发泡法制备ZrO2纤维增强的ZrO2闭孔泡沫陶瓷[J].真空电子技术,2017,(5):27-32,76,7.
