摘要
综述了烧结过程、烧结原动力,研究了选区激光烧结复合陶瓷粉末的烧结性能。结果表明,通过合理控制激光工艺参数(特别是激光功率和扫描速度),能顺利实现粉末烧结成形,且无明显的“球化”效应和翘曲变形。扫描电镜分析证实,此复合粉末体系的激光烧结是基于液相烧结机制,表面自由能的改变是其烧结的原动力。
The paper summarizes sintering process and sintering motivity and studied the sintering capability of complex ceramic powders . The experimental results show that choosing suitable laser processing parameters, especially laser power and scanning speed, can effectively control ＂ball＂ effect and warping deformation during laser sintering . The scanning electron microscope analyses proves that the bonding mechanism of this process is liquid phase sintering, the change of surface freedom energy is the motivity for sintering.
出处
《装备制造技术》
2006年第2期34-36,共3页
Equipment Manufacturing Technology
关键词
快速原型
选择性激光烧结
陶瓷粉末
液相烧结
rapid prototyping
selective laser sintering
ceramic powder
liquid-phase sintering
