SiC纳米陶瓷粉末激光烧结成形试验研究  

Experimental research of bulk fabrication of nano-SiC ceramic powder by laser sintering

作　　者：任雨松[1] 花国然[1] 罗新华[1] 田宗军[2] 黄因慧[2] 

机构地区：[1]南通大学机械工程学院,南通226006 [2]南京航空航天大学机电学院,南京210016

出　　处：《激光技术》2006年第4期402-405,共4页Laser Technology

基　　金：江苏省自然科学基金重点资助项目(BK2004005);江苏省教育厅基金资助项目(03KJB460103)

摘　　要：基于选择性激光烧结快速成型技术,利用CO2激光对纳米S iC粉体材料进行了激光烧结成型的试验。用X射线衍射、扫描电镜等分析了烧结层中纳米S iC的显微组织,同时对激光烧结过程及工艺参数的影响进行了探讨。研究结果表明,采用选择性激光烧结工艺参数,可以实现S iC陶瓷块体的烧结成型,烧结件内部组织保持纳米结构,材料晶粒尺寸基本不长大。烧结过程中S iC有分解反应,产生纳米S i和C。Fabrication of nano-SiC bulk material by selective laser sintering technology with nano-SiC powder is achieved. The microstructure of laser-sintering nano-SiC ceramic coating is examined by means of X-my diffraction analyses, scanning electron microscopy. At the same time,the laser sintering procedure of nano-SiC powder and effect of technique parameters are investigated. The results show that the nano-SiC powder materials can be sintered to bulk material with the proper process parameters ,the crystal size of the production is almost kept the same as that of nano-SiC powder,but some power is decomposed to nano-structural silicon and nano-structural carbon.

关 键 词：激光技术 选择性激光烧结成型 纳米陶瓷粉末 纳米块体材料 微观组织 

分 类 号：TG156.99[金属学及工艺—热处理]