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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 15    No. 1    February 2005

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Wetting behavior of Zr55Cu30Al10Ni5 melt on alumina
XU Qian-gang(徐前刚)1, 2, ZHANG Hai-feng(张海峰)2, HU Zhuang-qi(胡壮麒)2

1. Department of Materials Science and Engineering,
 Shenyang Institute of Aeronautic Engineering, Shenyang 110034, China;
2. Shenyang National Laboratory for Materials Science, Institute of Metal Research,
 The Chinese Academy of Sciences, Shenyang 110016, China

Abstract:The wetting behavior of molten Zr55Cu30Al10Ni5 on Al2O3 was studied by the sessile drop method in high vacuum. The results show that wetting kinetic at 1163K is composed of three stages: incubation, quasi-steady decrease and trend constant. Precursor film forms surrounding the wetting tip when wetting temperature is above 1163K. Formation of precursor film is related to the change of triple line configuration and results in good wettability. Chemical reaction dos not occur at the wetting interface. Al2O3 is an excellent reinforcement for Zr55Cu30Al10Ni5 matrix composite in terms of wettability and reactivity. The kinetic relationship of spreading ratio with spreading time was also investigated.

 

Key words: wetting; interfacial reaction; precursor film

ISSN 1672-7029
CN 43-1423/U

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