ZHANG Anfeng Xinjiang Engineering College
,
Urumqi
,
ChinaXING Jiandong LU Wenhua Xi'an Jiaotong University
,
Xi'an
,
China associate professor
,
Department of Mechanical Engineering
,
Xi'an Jiaotong University
,
Xi'an 710049
,
China
金属学报(英文版)
The oxidation behaviour of high Cr Cast iron was investigated at 950 and 800℃ in terms of Cr content in matrix and the amount of carbide.The morphology and types of oxide films and the microstructure of subsurface were also examined.The main conclusions are:1)The original chromium content in the matrix determines the type of oxide film and it is an important factor for the oxidation resistance of high chromium cast iron;2) The oxidation resistance improves with increasing carbide content at 950℃ because of the decomposition of the carbide,while the decompsition of the carbide do not take place at 800℃ so the oxidation resisteance do not improve with increasing carbide volume.
关键词:
high chromium cast iron
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