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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 201-203Preparation and Performance of MoB/CoCr Coatings...

Preparation and Performance of MoB/CoCr Coatings by LPPS on 20G Boiler Steel

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Abstract:

MoB/CoCr, a novel material for thermal spraying, with high durability in molten alloys is used to resist erosion by molten Al-Si alloy in solar thermal power generation. The microstructure and phase component of coatings were characterized, and the coatings were also studied on bond strength and thermal shock resistance. The durability of the MoB/CoCr coatings prepared by low pressure plasma spraying (LPPS) has been investigated using a molten-metal immersion tester. The results showed that phase component of powder and coating had little change. The coatings have dense structure and excellent combination with substrate. The main constituents of coatings remain invariant and the coatings have excellent properties of bond strength and thermal shock resistance. The immersion tests revealed that the MoB/CoCr coating has much higher durability without dissolution in the molten Al-12.07wt.%Si alloy.

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Advanced Manufacturing Systems, ICMSE 2011

Info:

Periodical:

Advanced Materials Research (Volumes 201-203)

Pages:

2623-2629

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.201-203.2623

Citation:

Cite this paper

Online since:

February 2011

Authors:

Xiao Chen, Ren Yuan Zhang, Feng Li

Keywords:

Al-Si Alloy, Erosion Resistance, MoB/CoCr, Thermal Shock

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