WU Shenqing ZHANG Deyuan Southeast University
,
Nanjing
,
China
金属学报(英文版)
The contact angle of liquid Ag with solid W and its temperature dependance were examined by sessile drop method under various atmospheres,e.g.vacuum,Ar,H_2 and carcked NH_3.The O_2 partial pressure in the atmosphere is found to be the major factor. An obvious improvement on the wettability may be made by a trace amount of Ni,Cu or Ce added to liquid Ag,The contact angle near M.P.is then narrowed from 69 to about 10—20 deg.
关键词:
contact angle
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