SURFACE SEGREGATION IN Mo-La ALLOY WIRE

Acta Metall Sin

1989, Vol. 25

Issue (5): 133-138 DOI:

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SURFACE SEGREGATION IN Mo-La ALLOY WIRE

HU Deqing;ZHANG Zhaoxiang;ZHAO Xingyu Peking University; Beijing ZHANG Zhaoxiang; Department of Radio Electronics; Peking University; 100871 Beijing

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HU Deqing;ZHANG Zhaoxiang;ZHAO Xingyu Peking University; Beijing ZHANG Zhaoxiang; Department of Radio Electronics; Peking University; 100871 Beijing. SURFACE SEGREGATION IN Mo-La ALLOY WIRE. Acta Metall Sin, 1989, 25(5): 133-138.

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Abstract & The surface segregation in Mo-4wt-%La alloy wire has been studiedby using Auger electron spectroscopy. The process of the segregation is that the Laatoms diffuse from the grain boundaries to surface. The grain boundary diffusionmodel was proposed. The experimental results were analysed by kinetics of grainboundary diffusion. The diffusion activation enenrgy E?=1.6 eV was obtained.

Key words: surface segregation grain boundary diffusion work function

Received: 18 May 1989

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1989/V25/I5/133

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