化学沉淀法制备纳米氟铝酸钾铝钎剂的研究  

Preparation of Nano-potassium Fluoaluminate Flux by Chemical Synthesis Method

作　　者：黄惠平[1] 揭晓华[1] 梁兴华[1] 卢国辉[1] 

机构地区：[1]广东工业大学材料与能源学院,广东广州510006

出　　处：《热加工工艺》2008年第9期1-3,共3页Hot Working Technology

基　　金：广东省科技计划资助项目(2004B10301021)

摘　　要：采用化学沉淀法制备出纳米氟铝酸钾铝钎剂粉体。扫描电镜观察表明,该粉体最小粒径为25～40nm,且晶粒形状为菱形;差示量热仪(DSC)测出钎剂熔点为551℃;X射线衍射分析表明,其主相为K2ALF5·H2O,且该钎剂钎焊性能优良。加入分散剂(PEG)有利于改善铝钎剂粉体的团聚。Nano-potassium fluoaluminate flux powder with grain size in 25-40 nm were prepared by chemical synthesis method. The nanometer powder was characterized by SEM, DSC-TG and XRD. X-ray diffraction pattern shows that the main phase is K2ALF5. H2O, and thermal analysis shows that the melting points of flux is 551℃. Adding dispersants is useful to improve powder reuniting.

关 键 词：化学沉淀法 纳米粉体 氟铝酸钾钎剂 

分 类 号：TG425[金属学及工艺—焊接]