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首页> 外文期刊>International Journal of Refractory Metals & Hard Materials >Effect of Fe on vacuum breakdown properties of CuW alloys
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Effect of Fe on vacuum breakdown properties of CuW alloys

机译：Fe对CuW合金真空击穿性能的影响

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摘要

CuW alloys with different Fe additions were prepared by the infiltration method. The microstructures of the CuW alloys prepared were characterized by a transmission electron microscope (TEM). The effect of Fe content on the surface erosion morphology was observed by a scanning electron microscope (SEM). The distribution of cathode spots was analyzed by a digital high-speed video camera. The results show that Fe addition can improve the relative density and thermal conductivity of CuW alloy with less than 0.6 wt.% Fe. However, excessive Fe addition can deteriorate the relative density and thermal conductivity. TEM results show that Fe addition can promote the formation of CuW solution. The area and depth of the erosion pits on the surface of CuW alloy depend on the breakdown position. Fe addition can strengthen the interface bond of Cu and W, improve the arc stability and the division of the cathode spots and, thus, avoid the concentration erosion.
机译：通过渗透法制备了添加了不同Fe的CuW合金。制备的CuW合金的微观结构用透射电子显微镜（TEM）表征。通过扫描电子显微镜（SEM）观察到Fe含量对表面侵蚀形态的影响。阴极斑点的分布通过数字高速摄像机来分析。结果表明，添加铁可以改善小于0.6 wt。％Fe的CuW合金的相对密度和导热率。然而，过量的铁添加会降低相对密度和导热率。 TEM结果表明，Fe的添加可以促进CuW溶液的形成。 CuW合金表面腐蚀坑的面积和深度取决于击穿位置。 Fe的添加可以增强Cu和W的界面键，提高电弧稳定性和阴极斑点的划分，从而避免浓度侵蚀。

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