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鎢螺旋線表面鍍金薄膜熱可靠性研究
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北京工業(yè)大學(xué),北京工業(yè)大學(xué),北京工業(yè)大學(xué),北京工業(yè)大學(xué),北京工業(yè)大學(xué)

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TB34

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國防科工局


Study on thermal reliability of Gold Filmon the surface of Tungsten Helix
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Beijing University of Technology,Beijing University of Technology,Beijing University of Technology,Beijing University of Technology,Beijing University of Technology

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    摘要:

    鎢螺旋線是行波管的關(guān)鍵部件,隨著行波管功率量級和工作頻率的不斷提高,其高頻損耗和散熱問題更加突出。為了解決這些問題,前期研究了鎢螺旋線表面鍍覆金膜的方法。由于螺旋線的工作溫度較高,鍍金薄膜的熱可靠性如何？因此本文采用納米劃痕技術(shù)測試鍍金薄膜和基體之間結(jié)合力大小,對預(yù)鍍銅5s,10s,15s和20s,鍍金均為1.5h后的試樣高溫(500℃,100h)處理前后的膜-基結(jié)合力進(jìn)行了對比分析。結(jié)果表明：預(yù)鍍銅5s,15s和20s的試樣經(jīng)高溫處理后的膜-基結(jié)合力大小與常溫下相比沒有明顯降低；預(yù)鍍銅10s時(shí)的試樣經(jīng)高溫處理后的膜-基結(jié)合力與常溫下相比有所增大。鎢螺旋線表面鍍金薄膜熱可靠性好。

    Abstract:

    Tungsten helix is a component of transfer wave tube (TWT), its high frequency loss and heat dissipation become serious with power level and working frequency of TWT increasing. To solve the problems, gold thin films were deposited on the surface of helix in our previous. How is the thermal reliability of gold thin films when helix operates at higher temperature? In this paper, the binding force between gold film and substrate was tested by using nanoscratch. The film binding forces of samples pre-plated copper respectively for 5s,10s,15s,20s and then gold-plated for 1.5h before and after heat treatment were analyzed.The results indicate that the films adhesion of samples after heat treatment show no obvious decrease compared with those of as-deposited samples. Especially, the binding force of the sample pre-plated copper for 10s after heat increases . The thermal reliability of gold films is good.

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范愛玲,李偉田,薛迎坤,常隨杰,馬捷.鎢螺旋線表面鍍金薄膜熱可靠性研究[J].稀有金屬材料與工程,2016,45(7):1788~1792.[Fan Ailing, Li Weitian, Xue Yingkun, Chang Suijie, Ma Jie. Study on thermal reliability of Gold Filmon the surface of Tungsten Helix[J]. Rare Metal Materials and Engineering,2016,45(7):1788~1792.]
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  • 收稿日期:2015-09-29
  • 最后修改日期:2015-12-28
  • 錄用日期:2016-01-14
  • 在線發(fā)布日期: 2016-10-09
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