SURFACE TENSION OF Cu - Bi ALLOYS AND WETTABILITY IN A LIQUID ALLOY - REFRACTORY MATERIAL - GASEOUS PHASE SYSTEM

摘要

The study involved measurements of surface tension of liquid binary copper-bismuth alloys with respect to their chemical composition and temperature as well as investigations of the liquid alloy - refractory material - gaseous phase system wettability using usual refractory materials, i.e. aluminium oxide, magnesium oxide and graphite. The experiments were performed with the use of sessile drop method and a high-temperature microscope coupled with a camera and a computer was utilised.