EFFECTS OF SELENIUM AND TELLURIUM ON THE SURFACE TENSION OF MOLTEN IRON AND THE WETTABILITY OF ALUMINA BY MOLTEN IRON.

Abstract

Selenium and tellurium acted as surface active agents and the surface activity increased in the order of oxygen, sulfur, selenium, and tellurium. The contact angle between molten iron and alumina decreased with the addition of oxygen and increased with addition of selenium and tellurium. The interfacial free energy between molten iron and alumina decreased with increasing these elements. The work of adhesion between molten iron and alumina decreased with increasing sulfur, selenium, and tellurium and increased with increasing oxygen.