Formation of Alumina Layer on Fe-Cr-Ni Alloy by Pack Cementation and Oxidation

Autor:	Xing Linlin, Zheng Yanjun, Cui Lishan, Sun Maohu, Shao Mingzeng, Lu Guiwu
Jazyk:	angličtina
Rok vydání:	2011
Předmět:	high temperature alloy coke deposition oxidation pack cementation Technology Chemical technology TP1-1185 Chemicals: Manufacture use etc. TP200-248
Zdroj:	High Temperature Materials and Processes, Vol 30, Iss 1-2, Pp 99-103 (2011)
Druh dokumentu:	article
ISSN:	0334-6455 2191-0324
DOI:	10.1515/htmp.2011.013
Popis:	To protect Fe-Cr-Ni based alloy from high temperature corrosion in carbon containing atmosphere at elevated temperature, alumina coating was prepared on the Fe-Ni-Cr alloy substrate by pack cementation and oxidation. Results showed that a surface FeAl layer formed after the pack cementation process, and an Al2O3 coating formed by selective oxidation of the FeAl layer. The coating adhered tightly to the FeAl layer without any cracks or porous inbetween them. By the oxidation process the catalytic elements such as Fe and Ni were remarkably reduced from the surface. Further anti-coking test indicated that the alumina scale could successfully inhibit the outward diffusion of catalytic elements and showed excellent coking resistance.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/353011bbb2b540f390b95a248a7e3f47 Zobrazit plný text záznamu View record in DOAJ