Explosive compaction of clad graphite powders and obtaining of coatings on their base.

Peikrishvili, A. B. ; Japaridze, L. A.

Technical Information Center Oak Ridge Tennessee

关键词: Compaction;    Coatings;    Explosives;    Graphite;    Shock waves;   

RP-ID  :  DE2001766125

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

In order to consolidate graphite based powders and in order to obtain coatings with density values near to the theoretical ones clad graphite powders of the C(graphite), - Ni (C - Ni) compositions were explosively compacted under different loading conditions. Theoretical calculations revealed that for assessing the stress-deformed state of C- Ni compositions and computing the normal and tangent stress components (when V < C(longitudinal) and VD< C(transversal)) it is recommended to apply the dynamic problem's solution model while the pressure impulse P = f(x) is being uniformly spread with constant rate along the boundary of a semi-infinite elastic body. The results of our experiments showed that it is possible to obtain high dense coatings from CE-Ni compositions bonded by an intermediate layer to the substrate material. The structure and properties of the coatings depends on the intensity of the shock loading and temperature. The effect of the shock loading conditions (temperature, loading intensity) on the structure, properties and structure/properties relationships for the C-Ni coatings are discussed.