Electrical breakdown characteristic of a Ce-doped W-Cu contact material

Autor:	Mianzhi Chen, Kewen Hu, Heng Ye
Rok vydání:	2010
Předmět:	Materials science Metallurgy Metals and Alloys Electrical breakdown Sintering Condensed Matter Physics Hot pressing Microstructure Electric arc Vacuum furnace Electrical resistivity and conductivity Powder metallurgy Materials Chemistry Physical and Theoretical Chemistry
Zdroj:	Rare Metals. 29:261-264
ISSN:	1867-7185 1001-0521
DOI:	10.1007/s12598-010-0045-z
Popis:	W-Cu composite powder doped with Ce (1.5 wt.%) was prepared by mechanical alloying (MA), and the W-Cu contact material was fabricated by hot pressing sintering in an electrical vacuum furnace. The microstructure, electric conductivity, hardness, and breakdown voltage of the Ce-doped W-Cu alloy were measured and compared with a conventional W-Cu alloy prepared by powder metallurgy. The results show that microstructural refinement and uniformity can improve the breakdown behavior and the electric arc stability of the Ce-doped W-Cu contact material. Also, the Ce-doped W-Cu contact material shows the characteristic of spreading electric arc, which is beneficial to electric arc erosion.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::213940c33c769fb7e4c1c13b2b87d1c9 https://doi.org/10.1007/s12598-010-0045-z Zobrazit plný text záznamu Full text from SpringerLink