Kovar合金注射成形工艺研究  

Study on Powder Injection Molding of Kovar Alloy

作　　者：段柏华[1] 周晓晖[1] 曲选辉[1] 徐征宙[2] 

机构地区：[1]中南大学粉末冶金国家重点实验室,湖南长沙410083 [2]北京科技大学材料科学与工程学院,北京100083

出　　处：《矿冶工程》2004年第5期70-72,共3页Mining and Metallurgical Engineering

基　　金：国家 8 63计划 (2 0 0 1AA3370 50 ) ;国家 973计划 (G2 0 0 0 0 672 0 3)

摘　　要：重点研究了注射成形Kovar合金的脱脂及烧结工艺。结果表明 :溶剂脱脂 +热脱脂工艺能有效快速地实现粘结剂的完全脱除 ,通过烧结后获得了 2 5～ 40 0℃内平均热膨胀系数为 5 .75× 10 -6/℃的注射成形Kovar合金封装盒体。金相显微组织及XRD分析说明了合金主要以奥氏体 (γ相 )主相及少量的α相共同组成 ,这种α相的存在是PIMKovar合金热膨胀系数偏高的主要原因。The debinding and sintering process in the powder injection molding(PIM) of Kovar alloy has been investigated here. The results show that all the binder can be removed rapidly and effectively by the solvent debinding and thermal debinding, PIM Kovar alloy packing box with an average thermal expansion coefficient of 5.75×10 -6/℃ over the range of 25 ℃ to 400 ℃ can be obtained after sintering. Both metallurgical microsructure and X-ray diffraction analysis show that the alloy is composed of austenititephase (γ phase) and a little ferrite phase (α phase), while the existence of α phase mainly results in the higher thermal expanxion coefficient of PIM Kovar alloy.

关 键 词：粉末注射成形 Kovar合金 热膨胀性 电子封装材料 

分 类 号：TF124.39[冶金工程—粉末冶金]