Surfaces, Interfaces and Surface Analysis of MaterialsNo Access

WETTING BEHAVIOR OF GRAPHITE BY Ti-78Cu AND Ti-50Cu ALLOYS

YANGWU MAO

School of Materials Science and Engineering, Beihang University, Beijing 100191, P. R. China

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SHUJIE LI

School of Materials Science and Engineering, Beihang University, Beijing 100191, P. R. China

Corresponding author, Professor and Ph.D.

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YANG PAN

School of Materials Science and Engineering, Beihang University, Beijing 100191, P. R. China

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https://doi.org/10.1142/S0217979210066033Cited by:2 (Source: Crossref)

Abstract

The wetting behavior of Ti-78Cu and Ti-50Cu alloys on graphite has been investigated by the sessile drop method in high vacuum. The contact angle of Ti-Cu alloys on graphite is influenced by the wetting temperature. The wetting of Ti-78Cu and Ti-50Cu alloys on graphite is chemical wetting. The microstructure and composition of the interfacial zone of the wetting samples were analyzed by SEM, EDX and XRD. Microstructure and phase analysis reveals that inter-diffusions and interfacial reactions take place in the wetting process. The reaction products include TiC and the intermetallic compounds composed of Ti and Cu. The inter-diffusions and interfacial reactions contribute to the interfacial bonding.