Formation Mechanism of Nanostructure of HVOF Sprayed Nanostructured WC-17Co Coating

Guo Qing Gou; Nan Huang; Hui Chen; Da Li; Yan Liu; Hua Ji; Yong Hui Zhu; Gui Guo Wang; Jin Peng Yu

doi:10.4028/www.scientific.net/AMR.314-316.279

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 314-316Formation Mechanism of Nanostructure of HVOF...

Formation Mechanism of Nanostructure of HVOF Sprayed Nanostructured WC-17Co Coating

Abstract:

Nanostructured WC-17Co coating was prepared by means of High Velocity Oxygen Flame (HVOF) technique. Characteristic of nano-structure of the coating was analyzed. The coating seems to be of lamination structure formed by fully or partially melted powder. It shows that the coating consists of melted and recrystallized zone, semi-molten zone and un-melted zone. Amorphous phase and nanocrystalline phase co-existed in the coating is due to the rapid heating and cooling during spraying. The nanostructured coating possesses excellent mechanical properties, which are closely related to the unique nanostructures existed in the coating.

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Periodical:

Advanced Materials Research (Volumes 314-316)

Pages:

279-283

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.314-316.279

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Online since:

August 2011

Authors:

Guo Qing Gou, Nan Huang, Hui Chen, Da Li, Yan Liu, Hua Ji, Yong Hui Zhu, Gui Guo Wang, Jin Peng Yu

Keywords:

Amorphous Phase, Formation Mechanism, HVOF, Nanocrystalline, WC-17Co

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