Microstructural Study on Ni-Based Alloy Coating on Plain-Carbon Steel Substrate by Hot Dipping Process

Tao Lin; Li Sheng Wang; Hui Ping Shao; Zhi Meng Guo

doi:10.4028/www.scientific.net/AMR.239-242.388

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 239-242Microstructural Study on Ni-Based Alloy Coating on...

Microstructural Study on Ni-Based Alloy Coating on Plain-Carbon Steel Substrate by Hot Dipping Process

Abstract:

Ni brazing alloy coating on soft metal substrate has been made extensively with different hard-facing processes. Among various hard-facing processes, hot-dipping has rarely been investigated as an inexpensive technique. In this study, thick Ni-Cr-Si-B-Fe alloy coating (>3 mm) has been made successfully on the plain carbon steel substrate with hot-dipping process. Microstructure and phase identification have been made to the coating with SEM and XRD. It was found that the Ni brazing alloy coating has good binding steel substrate with defect free. Four regions across the thickness of Ni brazing alloy coating, due to solidification conditions upon hot-dipping, have been identified with distinguished microstructure. The main phases of the coating include hard phases of CrB, Fe₂B, and Cr₂₃C₆ dispersed in g(Fe,Ni) matrix.

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Periodical:

Advanced Materials Research (Volumes 239-242)

Pages:

388-391

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.239-242.388

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Online since:

May 2011

Authors:

Tao Lin, Li Sheng Wang, Hui Ping Shao, Zhi Meng Guo

Keywords:

Hard-Facing, Hot-Dipping, Ni Brazing Alloy, Ni-Cr-Si-B-Fe Alloy

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