Accession Number:
AD0744153
Title:
Temperature Dependences of the Viscosity of Metals
Descriptive Note:
Corporate Author:
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH
Personal Author(s):
Report Date:
1972-03-13
Pagination or Media Count:
10.0
Abstract:
For pure metals three types of given dependences are observed 1 the polytherm has its convex side facing the abscissa, which is probably explained by the weakening of bonds during the thermal expansion of a fluid 2 the curve has its concave side to the abscissa, the activation energy increases with a rise in temperature, which can be caused by an increase in the coordination number, the integral bond energy increases, regardless of the possible weakening of a single bond, this can also take place in the case of intensive metallization of primarily covalent bonds 3 the given linear dependence, the invariability of E with a rise in temperature is probably explained by the compensating effect of several factors.
Descriptors:
Subject Categories:
- Metallurgy and Metallography