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VPS-EBW法制備W／Cu功能梯度材料及熱負(fù)荷實(shí)驗(yàn)研究
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TG113.2 TB34

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國家自然科學(xué)基金項(xiàng)目（10475080）資助


Fabrication of W/Cu Functionally Graded Materials Used for Nuclear Fusion Devices by VPS-EBW Method and Research of Electron Beam Radiation
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    摘要:

    采用真空等離子體噴涂-電子束焊接法制備出核聚變面對等離子體W／Cu功能梯度材料，梯度材料中成分分布均勻、密度較高。電子束輻照熱負(fù)荷實(shí)驗(yàn)發(fā)現(xiàn)：8MW／m^2的熱負(fù)荷條件下，樣品可以承受20s的輻照：在2．5Mw／m^2，4．5MW／m^2，6MW／m^2的熱負(fù)荷條件下，樣品可分別承受26s，22s，20s的輻照而沒有出現(xiàn)明顯的損傷現(xiàn)象。樣品疲勞實(shí)驗(yàn)也表現(xiàn)出很好的性能：8MW／m^2，10s輻照，可以承受70周熱疲勞：6MW／m^2，20s輻照，在第90周裂紋開始形成；在2．5MW／m^2，輻照時(shí)間為30s和4．5MW／m^2，輻照時(shí)間為25s條件下，樣品經(jīng)過100周熱疲勞實(shí)驗(yàn)均沒有出現(xiàn)明顯的損傷現(xiàn)象。對已出現(xiàn)裂紋的斷面作X射線能量色散能譜（EDS）分析發(fā)現(xiàn)，由于焊料本身或者焊接時(shí)引入的雜質(zhì)和虛焊，導(dǎo)致材料承受較高熱負(fù)荷實(shí)驗(yàn)時(shí)的熱應(yīng)力迅速增大到破裂極限，使表面溫度快速升高，而導(dǎo)致材料連接失效。

    Abstract:

    This paper introduces the fabrication method of W/Cu-FGM by Vacuum Plasma Spraying & Electron Beam Welding.Specimen could endure 20 s pluses under heat fluxes of 8 MW/m2.No damages appeared in the tested specimens which endured 26 s,22 s,20 s pluses under 2.5 MW/m2,4.5 MW/m2,6 MW/m2,respectively.Good performances were presented in the fatigue tests of the specimens.The specimens could endure 70 cycles fatigue under 6 MW/m2 and 20 s pluses;No damages appeared after the specimens were subject to 100 cyles fatigue test under 2.5 MW/m2,30 s and 4.5 MW/m2,25 s.Crack began to come into being during 90 cycles fatigue at the heat fluxes of 6 MW/m2,enduring 20 s.The specimen was analyzed by EDS.Impurities and pores were observed.

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種法力 陳俊凌 李建剛. VPS-EBW法制備W／Cu功能梯度材料及熱負(fù)荷實(shí)驗(yàn)研究[J].稀有金屬材料與工程,2006,35(9):1509~1512.[Chong Fali, Chen Junling, Li Jiangang. Fabrication of W/Cu Functionally Graded Materials Used for Nuclear Fusion Devices by VPS-EBW Method and Research of Electron Beam Radiation[J]. Rare Metal Materials and Engineering,2006,35(9):1509~1512.]
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  • 收稿日期:2005-09-28
  • 最后修改日期:2005-09-28
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