Wear resistance study of NiCrBSi plasma-sprayed coating with diamond as functional phase
Source abstract
Abstract
A plasma-sprayed coating was prepared with NiCrBSi alloy as the matrix and chromium-plated diamond as the hard additive phase. The chromium-plating layer was characterized by a thick dual-shell structure with gradient function. The inner shell was carbide (Cr 3 C 2 /Cr 7 C 3 ), which effectively protected diamond from graphitization and oxidation ablation, allowing the diamond to survive in the plasma coating. The outer shell was metallic chromium, which formed interface metallurgical bonding with matrix metal of the coating, enhancing the holding ability of the matrix to diamond. As a result, the obstacles in engineering application of diamond in plasma-sprayed coatings, namely, oxidation ablation and surface inertness were effectively solved. Experimental results revealed that compared with the NiCrBSi coating matrix, the hardness of the coating with 20 wt% additive plated diamond increased by 87%, wear resistance improved 3.8 times, and friction coefficient decreased by 83%.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Metal and Thin Film Mechanics · Diamond and Carbon-based Materials Research · High-Temperature Coating Behaviors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (20)
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