Author: Luchka M.
Publisher: Springer Publishing Company
ISSN: 1068-1302
Source: Powder Metallurgy and Metal Ceramics, Vol.45, Iss.9-10, 2006-09, pp. : 422-428
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Abstract
The state of stress and strain is considered for composite gradient coatings, in which the basic type of structure is layered, matrix, or skeletal, and which may be loaded by static or averaged dynamic forces or tangential frictional forces. It is shown that there is high carrying capacity and adequate wear resistance in coatings of gradient type containing nanocomposite matrices and uniformly distributed macroscopic impurities. The best material for sliding friction under high loads is dispersion-hardened or diffusion-alloyed matrix deposited on oriented crystalline eutectic layer (columnar type) containing macroinclusions which are linked by diffusion interaction zones with the metal matrix and the substrate.
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