Structural aspects of strength and methods to increase the serviceability of carbide coatings

Autor:	Alexandra V. Byakova
Rok vydání:	2000
Předmět:	Materials science Serviceability (structure) Metals and Alloys Plasticity Condensed Matter Physics Indentation hardness Durability Carbide Grain shape Fracture toughness Mechanics of Materials Metallic materials Materials Chemistry Ceramics and Composites Composite material
Zdroj:	Powder Metallurgy and Metal Ceramics. 39:85-91
ISSN:	1573-9066 1068-1302
DOI:	10.1007/bf02677448
Popis:	The effect of composition and structure on the microhardness, plasticity parameter (δH) and fracture toughness (KIc) of the widely used carbide layers (TiC, ZrC, VC, NbC, Cr23C6, Cr7C3) was investigated. It was found that the microhardness and plasticity parameter were basically determined by the composition of the carbide coatings and did not substantially vary with the structure, which had a preferential effect on fracture toughness. The laws governing the influence of grain shape, size, and preferred orientation on the fracture toughness of the coatings were determined. Recommendations for the control of composition and structure were formulated, and methods developed for the deposition of carbide coatings which increased the durability of a hard-alloy tool used under severe conditions two-fold compared to the best known analogues.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1e6037a5428d412647b23e8ff8030a04 https://doi.org/10.1007/bf02677448 Zobrazit plný text záznamu Full text from SpringerLink