The effect of carbon on phase composition and microstructure of cermets based on Mo2NiB2 boride

Autor:	M.B. Ivanov, T.N. Vershinina, P.B. Rimsha
Rok vydání:	2021
Předmět:	Materials science Precipitation (chemistry) chemistry.chemical_element General Medicine Cermet Microstructure Carbide Nickel chemistry.chemical_compound Fracture toughness Chemical engineering chemistry Boride Carbon
Zdroj:	International Journal of Refractory Metals and Hard Materials. 100:105650
ISSN:	0263-4368
DOI:	10.1016/j.ijrmhm.2021.105650
Popis:	This work investigates the effect of carbon alloying on the phase composition and microstructure of cermets based on the ternary boride Mo2NiB2. The sequence of precipitation of hard phases depending on the Mo/(B + C) ratio was determined. It is shown that at Mo/(B + C) close to 1, the phase composition is represented by boride Mo2NiB2, carbide Mo2C and nickel binder. The increase of Mo/(B + C) ratio leads first to the formation of additional Mo2C carbide, characterized by increased nickel content, and then to the appearance of κ-phase Mo10Ni3C3B. The relationship between the phase formation, porosity, hardness and fracture toughness of sintered cermets is revealed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::68524c12e24063f1f714f6cd7d3d3c9b https://doi.org/10.1016/j.ijrmhm.2021.105650 Zobrazit plný text záznamu Full Text from ScienceDirect