| 压电陶瓷变压器的激光钎焊 |
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| 引用本文： | 何云峰,都东,陈强,岁波,熊丽娟.压电陶瓷变压器的激光钎焊[J].清华大学学报(自然科学版),2002,42(4):494-497. |
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| 作者姓名： | 何云峰 都东 陈强 岁波 熊丽娟 |
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| 作者单位： | 清华大学,机械工程系,北京,100084 |
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| 摘 要： | 针对压电陶瓷变压器 ( PECT)侧电极的连接问题 ,提出了激光钎焊的工艺方法 ,采用金属网辅助钎膏钎接片单元工艺 ,很好地解决了多层元件不同性质分割区域表面的连接问题 ,激光钎焊接头全连通率高 ,热影响小 ,质量好。建立了三维多层异质复合结构 PECT的激光钎焊温度场数学模型 ,通过数值模拟的方法计算了 PECT激光钎焊温度场的分布情况 ,取得了比较理想的结果 ,激光钎焊工艺及温度场的分析研究 ,将会推动压电陶瓷变压器的实用化进程 ,对类似问题的解决也会有一定的借鉴意义
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| 关 键 词： | 压电陶瓷变压器 激光钎焊 温度场 数值模拟 |
| 文章编号： | 1000-0054(2002)04-0494-04 |
| 修稿时间： | 2000年5月24日 |
Laser soldering of piezoelectric ceramic transformer |
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| HE Yunfeng,DU Dong,CHEN Qiang,SUI Bo,XIONG Lijuan.Laser soldering of piezoelectric ceramic transformer[J].Journal of Tsinghua University(Science and Technology),2002,42(4):494-497. |
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| Authors: | HE Yunfeng DU Dong CHEN Qiang SUI Bo XIONG Lijuan |
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| Abstract: | Laser soldering was used to correct joint problems in the lateral electrodes of piezoelectric ceramic transformers (PECT). Wire mesh and soldering paste were used to weld the lateral electrode of a PECT. The joint problem in multilayer heterogeneous lamination was corrected with this process so that the PECT were connected very well and were not affected much by heat. A three dimensional model was developed for the laser soldering temperature field in multilayer materials. A simplified model was used for efficient finite element analyses to investigate the temperature distribution characteristics in laser soldering. The results were verified experimentally. The analysis of the temperature field distribution during laser soldering will accelerate the application of PECT and will be a reference for similar problems. |
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| Keywords: | piezoelectric ceramic transformers (PECT) laser soldering temperature filed numerical simulation |
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