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Surface tension and contact angles of molten cadmium telluride

Research paper by R. Balasubramanian, W. R. Wilcox

Indexed on: 01 Jan '90Published on: 01 Jan '90Published in: International Journal of Thermophysics



Abstract

The surface tension and contact angle of molten cadmium telluride (CdTe) were measured as a function of temperature by the sessile drop technique. A FORTRAN code was developed to calculate the surface tension of sessile drops, with the contact angle ranging from O to 180°. The wetting of cadmium telluride melt was studied on different surfaces. The surface tension of cadmium telluride was about 160 ±5 dynes · cm−1[1.6 m−1] at the melting point of 1093°C. The contact angle of CdTe melt was about 65° on a quartz optical flat, 75° on commercial fused quartz, and 125° on boron nitride coated quartz.