Progress Report on the Electrical Re-Sistivity and Thermal Expansion Determinations of Beryllium Carbide Compacts

摘要

Experimental measurements of the coefficient of expansion and the electrical resistivity of hot pressed beryllium carbide coMpacts were determined for temperatures op to 1800℉. The electrical resistivity decreased from O.4 chm-inch at roon temperature to 0.02 chm-inch at 1300℉ for a specimen of density 2.12.Expansion measurements indicated that at 1800℉ a Be2c rod had expanded about 1％ of its room temperature length. It was significant that no phase changes were detected dilatrometrlcally. A description of methods and apparatus is Included in the body of this report.