Size Dependent Thermal Expansion Coefficient of Rod-Shaped Oxide Eutectic Ceramic

摘要：

　　Rod-shaped oxide eutectic ceramics fabricated through SHS process can acquire outstanding mechanical properties.First,Eshebly-Mori-Tanaka method was used to study Thermal Stress Field of rod-shaped oxide eutectic ceramics,and then average strain of rod-shaped oxide eutectic ceramics aroused thermal inconsistency is obtained.The effective thermal expansion longitudinal strain and transverse strain of rod-shaped oxide eutectic ceramics are determined by the average strain.Rod-shaped oxide eutectic ceramics is transverse isotropy and has two independent thermal expansion coefficients.The results show that the thermal expansion coefficients of rod shaped oxide eutectic ceramics are dependent on the diameter of nano-fiber.The thermal expansion coefficients will decrease when the diameter of nano-fiber decrease.When the diameter of nano-fiber is bigger than 300nm,the thermal expansion coefficients of rod shaped oxide eutectic ceramics is constants.

关键词： Oxide eutectic ceramics Eshebly-Mori-Tanaka method Thermal expansion coefficient

作者: Liu Xiequan Lu Xiaobo Liu Jingzhi Li Baofeng

作者单位: Shijiazhuang Mechanical Engineering College,Shijiazhuang,050003,P.R.China Vocational Technique College,Hebei Normal University,Shijiazhuang 050003,China

会议类型: 国际会议

会议名称: The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))

会议地点: 长沙

会议语种:英文

页码: 1659-1661

在线出版日期: 2007-05-10（万方平台首次上网日期，不代表论文的发表时间）