1985•Acta Metallurgica SinicaRequires access
SURFACE TENSION OF LIQUID Ni-P AND Ni-Zr-P ALLOYS AND THEIR WETTABILITY ONTO ALUMINA
Wang Jingtan
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Abstract
The surface tension of liquid Ni-P and Ni-Zr-P alloys and their wettability
onto Al_2O_3 substrates were measured by the sessile drop method. The distribution
of P along the depth beneath the surface of the alloy was determined by AES.
Results show that the P is a surface-active element in liquid Ni and the surface
tension of liquid Ni-base alloy is obviously decreased by the increasing of P con-
tained when a small amount of Zr existed. The maximum adsorption value of
P on the liquid Ni surface is rather close to the measured value by AES. The
wettability of Iiquid Ni-P onto Al_2O_3 is concerned with the P content in the all-
oys and decreases as less Zr contained in them. The apparent shearing strength
of the Ni-base alloys against Al_2O_3 substrate was also evaluated.