Joining of Ceramics to Metals

陶瓷与金属的连接

• 批准号: 03650558
• 负责人: HONDA Tadatoshi
• 金额: $ 1.41万
• 依托单位: Kumamoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1991
• 资助国家: 日本
• 起止时间: 1991 至 1992
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-03650558/
• 关键词: Brazing; Bonding Strength; Filler Metal; Boride Ceramics; Interface; thermal Stress; Activated Metal; 反応相; スラリ-状金属粉末; 希土類酸化物; セラミックス; 統計的解析; TiーCu混合粉末; インサ-ト金属

In this study, two kinds of boride base ceramics were used, and high speed steel was chosen as bonding partner because it has the lowest thermal expansion coefficient in the steel materials. As filler metal, Ag-Cu system alloys were used because of its low melting point and good wettability on steel material. Bonding strength was evaluated from shear test and bonding structure was investigated with EPMA.The results obtained from this experiment are summarized as follows: 1) Both TiB_2-TaB_2-CoB and TiB_2-Ti(C,N)-Mo_2NiB_2 ceramics showed good joinability with Ag-Cu system filler metals. 2) Three-foil filler metal which consist of Ag-Cu eutectic alloy and Ni or Ti, Hf produced high bonding strength over 100Mpa. 3) In the case of using active metal as foil, reaction layer was formed at the ceramic and steel interface including those elements and Cu, which seemed to be effective on the boning strength. 4) Using of Ag-Cu-Sn/Ti/Ag-Cu-Sn filler metal produced the bonding strength over 100MPa even at a low temperature of 973K.

本研究采用了两种硼化物基陶瓷材料，其中高速钢的热膨胀系数最低，因此选择高速钢作为结合剂。由于银-铜系合金熔点低，与钢材具有良好的润湿性，因此采用该系合金作为填充材料。实验结果表明：1)TiB_2-Tab_2-Cob和TiB_2-Ti(C，N)-Mo_2NiB_2陶瓷与Ag-Cu系钎料具有良好的接合性。2)由银-铜共晶合金和镍、钛、氢三种金属组成的三箔焊料具有100 Mpa以上的高结合强度。3)在活性金属为箔的情况下，在陶瓷-钢界面形成了反应层，反应层中含有这些元素和铜，这似乎对结合强度有影响。4)采用银-铜-锡/钛/银-铜-锡钎料，在973K的低温下仍可获得100 Mpa以上的结合强度。