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1600 ℃下Mo合金-W涂層的互擴散行為研究
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Interdiffusion Behavior of W Coating and Mo Alloy at 1600 ℃
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    摘要:

    對W涂層和Mo合金在1600 ℃下的互擴散行為進行了研究，單晶樣品長期（最長5000 h）高溫退火后仍然保持單晶形貌，多晶材料W晶界多垂直于Mo表面方向。由線掃描結(jié)果：W向Mo基體的擴散深度大于Mo向W涂層的擴散深度。根據(jù)電子探針數(shù)據(jù)使用Den Broeder方法對Mo-W的互擴散系數(shù)進行了計算，1600 ℃時Mo-W的互擴散系數(shù)在10-15~10-16 cm2/s量級，且lnD與yW成線性關(guān)系，斜率為–1.82。

    Abstract:

    The interdiffusion behavior of W coating with Mo alloy at 1600 ℃ was studied, the monocrystal samples remained monocrystal feature without after long time (maximum of 5000 h) annealed, and grain boundary of polycrystal W was perpendicular to the surface of Mo. As the result of line scan of SEM: the diffusion depth of W in Mo was larger than that of Mo in W. The interdiffusion coefficient D of monocrystal Mo-W system was calculated with EPMA datas by the method of Den Broeder, and as the result: D was 10-15~10-16 cm2/s at 1600 ℃, lnD was linear relationship inverse of concentration of W, and the slope was –1.82.

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陳 博,鄭劍平,張華鋒,王振東,雷華楨,姜 瑋,王衛(wèi)軍,鐘武燁,饒立強.1600 ℃下Mo合金-W涂層的互擴散行為研究[J].稀有金屬材料與工程,2014,43(4):932~935.[Chen Bo, Zheng Jianping, Zhang Huafeng, Wang Zhendong, Lei Huazhen, Jiang Wei, Wang Weijun, Zhong Wuye, Rao Liqiang. Interdiffusion Behavior of W Coating and Mo Alloy at 1600 ℃[J]. Rare Metal Materials and Engineering,2014,43(4):932~935.]
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  • 收稿日期:2013-04-12
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  • 在線發(fā)布日期: 2014-07-30
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