| 路希龙,刘平,刘新宽,陈小红,何代华,李伟.钎焊真空度对铜与铪钎焊接头组织及性能的影响[J].有色金属材料与工程,2014,35(3):110-113. |
| 钎焊真空度对铜与铪钎焊接头组织及性能的影响 |
| Effects of Brazing Vacuum Degree on Microstructure and Mechanical Properties of Copper and Hafnium Brazed Joints |
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| DOI：10.13258/j.cnki.snm.2014.03.004 |
| 中文关键词: 铜 铪 钎焊 真空度 |
| 英文关键词:copper hafnium brazing vacuum degree |
| 基金项目:上海市教委科研创新项目（11YZ112）；上海市科委基础重点项目（10JC1411800） |
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| 中文摘要: |
| 采用72Ag-28Cu钎料对铜与铪进行真空钎焊试验.钎焊温度为840 ℃，保温时间为15 min，真空度试验范围为5.0×10-2～8.0 Pa.研究了钎焊真空度对铜与铪钎焊接头组织及性能的影响，采用场发射扫描电子显微镜（FESEM）观察钎焊接头的组织形貌，采用ZWICK-Z050电子万能材料试验机测试接头剪切强度.结果表明：随着钎焊真空度的升高，接头剪切强度呈先升高后降低的趋势；在钎焊温度为840 ℃、保温时间为15 min时，较佳的钎焊真空度为2.0×10-1 Pa. |
| 英文摘要: |
| Copper and hafnium was brazed with 72Ag-28Cu filler metal in vacuum on condition that the brazing temperature is 840℃,the holding time is 15 minutes and the vacuum degree is 5.0×10-2-8.0 Pa.The effects of brazing vacuum degree on microstructure and mechanical properties of the copper and hafnium brazing joints were studied based on the microstructure and morphology of the brazing joints observed by scanning electron microscope (FESEM) and the shear strength of the joints tested with electrical universal material testing machine ZWICK-Z050.The results show that,with the increase of the brazing vacuum degree,the shear strength of joints increased first and then decreased.When the brazing temperature is 840 ℃ and the holding time is 15 minutes,the best vacuum degree is 2.0×10-1 Pa. |
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