日本金属学会誌

J. Japan Inst. Metals, Vol. 57, No. 1 (1993),
pp. 63-67

Wettability of Diamond by Liquid Pure Metals

Kiyoshi Nogi1, Yukimasa Okada2, Kazumi Ogino2 and Nobuya Iwamoto1

1Welding Research Iwamo Institute of Osaka University, Osaka
2Faculty of Engineering, Osaka University, Osaka

Abstract:

The wettability of diamond by liquid pure Bi, Pb, Sn, Ag and Au was measured by the sessile drop method. The results can be summarized as follows:
(1) The wettability of diamond depended on its surface orientation.

(2) The wettability of diamond was significantly affectd by adsorption and desorption of hydrogen and graphitization on diamond surface.

(3) The interaction between liquid metals and diamond was not the chemical one but the physical one.

(4) The work of adhesion between liquid Bi and diamond which was measured at the lowest temperature in this work was qualitatively in good agreement with the result obtained by AFM (atomic force microscope).

(5) It might be possible to evaluate the surface structure change of diamond from the wettability measurement.


(Received June 4, 1992)

Keywords:

wettability, diamond, atomic force microscope, liquid metal, contact angle


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