纳米Al2O3激光烧结快速成型试验初探

将快速成型技术引入纳米材料成型领域,在Al2O3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Al2O3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Al2O3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。

Experimental research of selective laser sintering of nano-Al2O3

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.