| 活性钎料真空钎焊Si3N4/钢接头性能的研究 |
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| 引用本文： | 包芳涵,任家烈,周运鸿.活性钎料真空钎焊Si3N4/钢接头性能的研究[J].焊接学报,1990,11(4):200-204. |
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| 作者姓名： | 包芳涵 任家烈 周运鸿 |
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| 作者单位： | 北京清华大学 副教授
(包芳涵)，北京清华大学 教授
(任家烈)，北京清华大学 讲师(周运鸿) |
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| 摘 要： |
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| 关 键 词： | 钎焊 焊接接头 性能 |
| 收稿时间： | 1990/8/29 0:00:00 |
PROPERTIES OF VACUUM BRAZED Si3N4/STEEL JOINT USING ACTIVE BRAZING FILLER METAL |
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| Bao Fanghan,Ren Jialie and Zhou Yunhong.PROPERTIES OF VACUUM BRAZED Si3N4/STEEL JOINT USING ACTIVE BRAZING FILLER METAL[J].Transactions of The China Welding Institution,1990,11(4):200-204. |
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| Authors: | Bao Fanghan Ren Jialie and Zhou Yunhong |
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| Affiliation: | Tsinghua University |
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| Abstract: | The influence of active element Ti in Ag-Cu-Ti filler metal on wettabilityand joint strength has been studied.Filler metal with 3%Ti achieved goodresults in direct brazing of silicon nitride to steel.For the sake of improvingjoint strength,different interlayers have been synthetically investigated.Expe-riments showed that interlayer of low yield strength material may reduce theresidual stress in the joint and increase joint strength more effectively thanthat of interlayer of low coefficient of expansion material.Stress magnitudeand distribution was calculated and analysed by thermal elastoplastic FEM andcompared with experiment results.By means of SEM,EDX,and EPMA analy-ses the joining mechanism was investigated.Active element Ti in the brazingalloy diffused into Si_3N_4 and chemical reactions occured in ceramic-metal in-terface,certain chemical compounds consist of N and Ti produced. |
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| Keywords: | Brazing Welded joint Function |
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