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Material Removal Characteristic of Laser Cladding Cobalt-Based Alloy in the Photochemical Process

1
Key Laboratory of Special Purpose Equipment and Advanced Manufacturing Technology of Ministry of Education, Zhejiang University of Technology, Hangzhou 310024, China
2
The State Key Lab of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou 310027, China
*
Author to whom correspondence should be addressed.
Metals 2019, 9(6), 657; https://doi.org/10.3390/met9060657
Received: 20 April 2019 / Revised: 29 May 2019 / Accepted: 3 June 2019 / Published: 5 June 2019
Cobalt-based alloy materials, widely used for laser cladding, are difficult to process. To address this problem, and based on the analysis of the physicochemical properties of cobalt and its compounds, a method for removing cobalt-based alloy materials under photocatalytic conditions was proposed under the effect of ultraviolet photocatalysis and chemical corrosion. In this study, a material removal model under photocatalytic conditions was established, and the reaction principle of cobalt-based alloys under ultraviolet photocatalysis and chemical corrosion conditions was described. We designed a corrosion solution configuration test and established a cobalt-based alloy processing test based on a pneumatic wheel test platform. The processing test proved that the combination of ultraviolet (UV) photocatalysis and Basic Yellow 40 + TiO2 chemical corrosion pretreatment can significantly increase the mechanical material removal rate of cobalt-based alloy materials and effectively reduce surface roughness. At the same time, processing efficiency can be increased over 40%. This showed that the new method is capable of performing well in the field of mold cobalt-based alloy coating processing in the future. View Full-Text
Keywords: Co-based alloys; laser cladding; photocatalysis; chemical corrosion; mechanical material removal rate (MMRR); surface quality Co-based alloys; laser cladding; photocatalysis; chemical corrosion; mechanical material removal rate (MMRR); surface quality
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MDPI and ACS Style

Zeng, X.; Li, Z.; Xi, F.; Ji, S.; Qiu, L.; Shi, M.; Zheng, Q.; Qiu, W. Material Removal Characteristic of Laser Cladding Cobalt-Based Alloy in the Photochemical Process. Metals 2019, 9, 657. https://doi.org/10.3390/met9060657

AMA Style

Zeng X, Li Z, Xi F, Ji S, Qiu L, Shi M, Zheng Q, Qiu W. Material Removal Characteristic of Laser Cladding Cobalt-Based Alloy in the Photochemical Process. Metals. 2019; 9(6):657. https://doi.org/10.3390/met9060657

Chicago/Turabian Style

Zeng, Xi; Li, Zhuo; Xi, Fengfei; Ji, Shiming; Qiu, Lei; Shi, Meng; Zheng, Qianqian; Qiu, Wenbin. 2019. "Material Removal Characteristic of Laser Cladding Cobalt-Based Alloy in the Photochemical Process" Metals 9, no. 6: 657. https://doi.org/10.3390/met9060657

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