| TC4钛合金与无氧铜、可伐合金真空钎焊工艺研究 |
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| 引用本文： | 郝振贻,严彪.TC4钛合金与无氧铜、可伐合金真空钎焊工艺研究[J].上海理工大学学报,2020,41(1):32-36. |
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| 作者姓名： | 郝振贻 严彪 |
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| 作者单位： | 同济大学 材料科学与工程学院, 上海 201804;中国科学院上海技术物理研究所 中国科学院红外成像材料与器件重点实验室, 上海 200083,同济大学 材料科学与工程学院, 上海 201804 |
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| 基金项目： | 国家自然科学基金资助项目（61475179）；中国科学院青年创新促进会基金资助项目（2014215） |
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| 摘 要： | 针对红外探测器杜瓦冷指的设计，应选取具有较高屈服强度、较低热导率和较低密度的材料，以提高红外探测器杜瓦的可靠性。考虑到红外探测器封装的其他结构需求，TC4钛合金与无氧铜、可伐等金属之间的焊接一般不太容易实现，试验中采用真空钎焊作为焊接手段，选取Ti-Ni-Zr-Cu钎料，对TC4钛合金与无氧铜、可伐合金的真空钎焊焊接试验结果进行比较分析，得出TC4钛合金与无氧铜、可伐合金钎焊后检漏漏率优于10-11 torr.l/s，焊缝抗拉强度都达到150 MPa以上。
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| 关 键 词： | TC4钛合金 真空钎焊 杜瓦薄壁冷指 |
| 收稿时间： | 2019/7/8 0:00:00 |
Study on Vacuum Brazing Technology of TC4 Titanium Alloy with Oxygen-free Copper and Kovar Alloy |
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| HAO Zhenyi and YAN Biao.Study on Vacuum Brazing Technology of TC4 Titanium Alloy with Oxygen-free Copper and Kovar Alloy[J].Journal of University of Shanghai For Science and Technology,2020,41(1):32-36. |
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| Authors: | HAO Zhenyi and YAN Biao |
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| Institution: | School of Materials Science and Engineering, Tongji University, Shanghai 201804, China;Key Laboratory of Infrared Imaging Materials and Detectors, Shanghai Institute of Technical Physics, Chinese Acadamy of Sciences, Shanghai 200083, China and School of Materials Science and Engineering, Tongji University, Shanghai 201804, China |
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| Abstract: | For designing cold finger of infrared detector dewar, materials with high yield strength, low thermal conductivity and low density should be selected in order to improve the reliability of infrared detector dewar. Considering other structural requirements of infrared detector package, the welding between TC4 titanium alloy and oxygen free copper, kovar and other metals is generally not easy to achieve. In the experiment, by using vacuum brazing as the welding method and selecting Ti-Ni-Zr-Cu as solder, the test results of vacuum brazing TC4 titanium alloy with oxygen-free copper and kovar alloys were compared and analyzed. It is found that the leakage detection rates of brazed TC4 titanium alloy with oxygen-free copper and kovar alloys are better than 10-11 torr.l/s, and the tensile strength of the welds are all above 150 MPa. |
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| Keywords: | TC4 titanium alloy vacuum brazing cold finger of thin-walled dewar |
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