Study of the surface properties of nickel plating on metal reflectors and the feasibility of optical processing

Hao Hu; Xiaoqiang Peng; Qilin Yang

doi:10.1117/12.2624819

27 March 2022 Study of the surface properties of nickel plating on metal reflectors and the feasibility of optical processing

Hao Hu, Xiaoqiang Peng, Qilin Yang

Author Affiliations +

Proceedings Volume 12169, Eighth Symposium on Novel Photoelectronic Detection Technology and Applications; 121696Q (2022) https://doi.org/10.1117/12.2624819
Event: Eighth Symposium on Novel Photoelectronic Detection Technology and Applications, 2021, Kunming, China

Abstract

Metal mirrors, represented by alμminiμm alloys, have soft and easily damaged surfaces and can be coated with a nickel- phosphorus alloy by means of chemical nickel plating prior to polishing. In order to obtain better processing results, the characteristics of the nickel-phosphorus alloy must be studied. In this paper, the nickel-phosphorus alloy was characterised by means of a hardness tester and EDS, and the experimental results show that the nickel-phosphorus coating has a Vickers hardness of 566 Hv. Depending on the properties of the coating, magnetorheological polishing was carried out using different types of polishing abrasive grains. By comparing the surface roughness after processing, silicon dioxide was selected as the polishing abrasive particle and magnetorheological fluid parameters such as pH value were adjusted to obtain a removal function with a volμme removal efficiency of 5.22 x 10⁷μm³ /min. At the same time, combining different processes such as CCOS polishing and analysing the processing principle, the obtained surface roughness Ra value is better than 0.5nm, exploring the process route of nickel-phosphorus coating and providing technical support for the subsequent processing.

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Hao Hu, Xiaoqiang Peng, and Qilin Yang "Study of the surface properties of nickel plating on metal reflectors and the feasibility of optical processing", Proc. SPIE 12169, Eighth Symposium on Novel Photoelectronic Detection Technology and Applications, 121696Q (27 March 2022); https://doi.org/10.1117/12.2624819

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