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Thermodynamic and Kinetic Studies for a Refractory Materials Program, Part II.

Report Number: ASD TDR 62-204 Part 2
Author: McClaine, L. A.
Corporate Author: Arthur D. Little, Inc.
Laboratory: Air Force Materials Laboratory
Date of Publication: 1963-05
Pages: 142
Contract: AF 33(616)-7472
Project: 7350
Task: 735001
AD Number: AD0412353

Thermodynamic and kinetic data which are required to describe the chemical behavior of the zir conium and hafnium carbides and0ides at temperatures to 3000K and in atmospheres of O2, O2 H2O, Cl2, HF, F2, H2, CO, NH3, and N2 are presented. Preparation of high purity ZrC, ZrO2, HfB2, and HfC are described. Experimental low temperature heat capacity data for ZrC and heat content data for ZrB2 from 410 to 1126K are presented. Current status of calorimetric, electron diffraction, equilibria, and spectros copy studies are reported.

Lockheed Martin Missiles & Fire Control
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