Heat - and Wear-Resistant Nanocomposite Material Based on Copper Powder for Valve Guides of High-Forced Engines

Autor:	Y. O. Vladimirova, E. P. Shalunov
Rok vydání:	2020
Předmět:	Nanocomposite Materials science chemistry Metallurgy chemistry.chemical_element Wear resistant Valve guide Copper
Zdroj:	IOP Conference Series: Materials Science and Engineering. 709:033089
ISSN:	1757-899X 1757-8981
DOI:	10.1088/1757-899x/709/3/033089
Popis:	The article presents the results of the development of heat - and wear-resistant nanocomposite material based on copper powder Cu-Al-C-O system, which due to the optimally selected chemical composition and dispersion-strengthened structure with a strengthening phase γ-Al2O3 of nanodispersed range has a set of physical, mechanical and operational characteristics, at its level significantly higher than the similar characteristics of the standard bronze CuNi2Si F65 DIN 17666, used by a number of engine companies for the valve guides of powerful and high-forced internal combustion engines. In particular, the wear resistance coefficient for the valve guide made of this material is 17 times higher than for the guide made of this standard bronze. In this case, the coefficient of score-resistance of the bushings of the new material is 2.54 times higher than the same index for the bushings of bronze. Moreover, it also provides the least wear not only of the guide bushing but also of the valve, i.e. of the entire pairing as a whole.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::875bc561f54405bee9b6d081e7e6514a https://doi.org/10.1088/1757-899x/709/3/033089 Zobrazit plný text záznamu