| 激光毛化对Cf/SiC与TC4钎焊接头组织及性能的影响 |
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| 引用本文： | 李海刚,毕建勋,马武军,邱金莲,李栋.激光毛化对Cf/SiC与TC4钎焊接头组织及性能的影响[J].宇航材料工艺,2017,47(1):42-46. |
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| 作者姓名： | 李海刚 毕建勋 马武军 邱金莲 李栋 |
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| 作者单位： | 航天材料及工艺研究所, 北京 100076,航天材料及工艺研究所, 北京 100076,上海空间推进研究所, 上海 200223,上海空间推进研究所, 上海 200223,航天材料及工艺研究所, 北京 100076 |
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| 摘 要： | 由于线胀系数差异大,Cf/Si C复合材料与TC4钛合金钎焊接头容易形成较大的内应力而开裂失效。为了进一步提高接头强度,应用激光毛化工艺在Cf/Si C表面烧蚀出微孔,采用银基钎料对Cf/Si C与TC4进行钎焊。焊后对接头力学性能进行测试,对接头界面及断口显微组织进行观察。结果表明:焊前对Cf/Si C表面进行激光毛化处理,钎料能够填充微孔并形成良好的钎焊界面,能够提高Cf/Si C与TC4钎焊接头的剪切强度。
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| 关 键 词： | 激光毛化 Cf/SiC陶瓷基复合材料 钛合金 钎焊 |
| 收稿时间： | 2016/12/5 0:00:00 |
Influence of Laser Roughing Technology on Microstructureand Properties of Cf/SiC-TC4 Brazing Joints |
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| LI Haigang,BI Jianxun,MA Wujun,QIU Jinlian and LI Dong.Influence of Laser Roughing Technology on Microstructureand Properties of Cf/SiC-TC4 Brazing Joints[J].Aerospace Materials & Technology,2017,47(1):42-46. |
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| Authors: | LI Haigang BI Jianxun MA Wujun QIU Jinlian and LI Dong |
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| Institution: | Aerospace Research Insitute of Materials & Processing Technology, Beijing 100076,Aerospace Research Insitute of Materials & Processing Technology, Beijing 100076,Shanghai Institute of Space Propulsion, Shanghai 200233,Shanghai Institute of Space Propulsion, Shanghai 200233 and Aerospace Research Insitute of Materials & Processing Technology, Beijing 100076 |
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| Abstract: | Micro-holes were ablated on the brazing sureface of Cf/SiC CMCs by laser roughing technology. And the Cf/SiC-TC4 brazing joint was achieved by Ag-based filler. Then mechanical properites were tested, the microstructure of the joints and the shear fracture were observed. The results show that, the filler can filled the micro-holes, and the shearing strength of the joints were enhanced. |
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| Keywords: | Laser roughing technology Cf/SiC CMCs Titanium Brazing |
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