热处理温度对机械合金化合成Ti3AlC2粉体纯度的影响

材料热处理学报, 2008, 29(3): 35-38.

热处理温度对机械合金化合成Ti3AlC2粉体纯度的影响

金松哲 ^1, , 王蕾 ^2, , 吴化 ^3, , 孙世成 ^4, , 任露泉 ^5, , 杨晨 ^6,

1.长春工业大学材料科学与工程学院,吉林长春,130012;吉林大学地面机械仿生技术教育部重点实验室,吉林长春,130022

2.长春工业大学材料科学与工程学院,吉林长春,130012

3.长春工业大学材料科学与工程学院,吉林长春,130012

4.长春工业大学材料科学与工程学院,吉林长春,130012

5.吉林大学地面机械仿生技术教育部重点实验室,吉林长春,130022

6.吉林大学教育部汽车材料重点实验室,吉林长春,130022

基金项目: 教育部高等学校博士学科点专项科研基金(20060183058) 吉林省科技发展计划(20070511)

关键词： Ti3AlC2 , 脉冲放电等离子烧结 , 热处理

Effect of heat treatment temperature on purity of Ti3AIC2 powders synthesized by MA

采用放电等离子烧结(SPS)系统对含有TiC等杂质相的机械合金化(MA)合成的Ti3AlC2粉体进行热处理,研究了热处理温度对粉体中Tti3AlC2纯度的影响.结果表明:SPS无压加热处理可以显著提高机械合金化合成粉体中Ti3AlC2的含量.经SPS热处理的粉体中Ti2AlC2的含量在600～1000℃范围内随热处理温度的提高而增加,温度不高于900℃时处理后的粉体还基本保持粉体特征.当温度为1000℃时,得到产物中Ti3AlC2纯度可达到93%.通过对点阵常数测定可知随着热处理温度的提高Ti3AlC2点阵常数逐渐接近理论值.

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