摘要
将快速成型技术引入纳米材料成型领域 ,在Al2 O3 纳米粉末的选择性激光烧结试验基础上 ,系统分析了纳米陶瓷材料激光烧结工艺的影响因素 ,初选了烧结参数 ,得到了较为合理的纳米Al2 O3 粉末激光烧结工艺。通过多层烧结试验对其进行了验证 ,对烧结制件进行了成分、微观组织等检测分析。试验表明 ,采用得到的选择性激光烧结工艺 ,可以实现纳米Al2 O3 的自由成型 ,烧结制件内部组织保持纳米结构 ,材料晶粒尺寸基本不长大。
With rapid prototyping introduced to the process of nano material,experiments on slective laser sintering of nano-alumina are carried out and effect of sintering parameters on the process is analyzed systematically.A reasonable selective laser sintering technique of nano-alumina which can be used to fabricate nano-structured parts with free shape is obtained and verified with a multi-layer sintering experiment.The component and the microstructure of the sintering production is tested.It is indicated that with the selective laser sintering technique obtained above,nano-alumina can be processed to manufacture three-dimension nano-structured parts with free shape,the crystal size of the production is almost kept the same as that of alumina powder.
出处
《激光技术》
CAS
CSCD
北大核心
2004年第5期455-458,共4页
Laser Technology
基金
国家自然科学基金资助项目 (5 0 30 5 0 10
5 9975 0 4 6 )
关键词
选择性激光烧结
纳米陶瓷
快速成型
工艺参数
selective laser sintering
nano-structured ceramic
rapid prototyping
technique parameter
