SURFACE TENSION OF LIQUID Ni-P AND Ni-Zr-P ALLOYS AND THEIR WETTABILITY ONTO ALUMINA

Acta Metall Sin

1985, Vol. 21

Issue (6): 65-72 DOI:

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SURFACE TENSION OF LIQUID Ni-P AND Ni-Zr-P ALLOYS AND THEIR WETTABILITY ONTO ALUMINA

by WANG Jingtang;CHEN Qiu;YU Yongtian;LI Gusong Institute of Metal Research; Academia Sinica; Shenyang

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by WANG Jingtang;CHEN Qiu;YU Yongtian;LI Gusong Institute of Metal Research; Academia Sinica; Shenyang. SURFACE TENSION OF LIQUID Ni-P AND Ni-Zr-P ALLOYS AND THEIR WETTABILITY ONTO ALUMINA. Acta Metall Sin, 1985, 21(6): 65-72.

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Abstract The surface tension of liquid Ni-P and Ni-Zr-P alloys and their wettabilityonto Al_2O_3 substrates were measured by the sessile drop method. The distributionof 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 surfacetension 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 ofP on the liquid Ni surface is rather close to the measured value by AES. Thewettability 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 strengthof the Ni-base alloys against Al_2O_3 substrate was also evaluated.

Received: 18 June 1985

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