等离子喷涂MoSi2/Al2O3涂层材料的力学与介电性能

材料导报, 2011, 25(12): 63-65.

等离子喷涂MoSi2/Al2O3涂层材料的力学与介电性能

武志红 ^1, , 周万城 ^2, , 罗发 ^3, , 朱冬梅 ^4,

1.西北工业大学凝固技术国家重点实验室,西安710072

2.西北工业大学凝固技术国家重点实验室,西安710072

3.西北工业大学凝固技术国家重点实验室,西安710072

4.西北工业大学凝固技术国家重点实验室,西安710072

基金项目: 凝固技术国家重点实验室(西北工业大学)自主研究项目(KP200901) 国家自然科学基金(51072165)

关键词： MoSi2/Al2O3涂层 , 介电常数 , 力学性能

Structure and Dielectric Properties of Alumina Coats Containing MoSi2-particle Prepared by Atmosphere Plasma Spraying

以MoSi2为吸收剂,纳米Al2O3粉为基体,采用大气等离子喷涂法制备出MoSi2/Al2O3复合涂层.研究了MoSi2含量对复合涂层力学及介电性能的影响.结果表明,MoSi2颗粒均匀分布于Al2O3基体中;随MoSi2含量的增加,复合涂层的抗弯强度、断裂韧性及冲击强度逐渐增强;根据测定的复介电常数与频率的关系及计算出的介电损耗角正切可以看出,复合涂层的介电常数与MoSi2含量有关,MoSi2掺量越高,复合材料涂层的介电常数越小;随频率的逐渐增大,材料的复介电常数表现出减小的趋势,具有频散效应.

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材料期刊网

等离子喷涂MoSi2/Al2O3涂层材料的力学与介电性能

Structure and Dielectric Properties of Alumina Coats Containing MoSi2-particle Prepared by Atmosphere Plasma Spraying

参考文献