Preparation and properties of thick nickel-phosphorus amorphous plating on SiCp/Al composite by double zincate pretreatment

Tian, Meijuan; Jian, Zengyun; Hai, Rui

doi:10.1016/j.jallcom.2022.164806

Cited by 8 publications

(2 citation statements)

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“…Electroless nickel plating was carried out in a plating solution in which a chemical reaction took place, with a pH value of 6.0, a composition of NiSO4-6H2O, NaH2PO2-H2O, and CH₃COONa-3H2O as the main components of the plating solution, a plating temperature of 90 °C, and a plating speed of 10 μm/h. Figure 1a shows the surface of the NiP coating without any treatment observed under a digital microscope (Keyence VHX-600E, Osaka, Japan), and it can be noticed that the coated presents the typical nodular features of cauliflower-like structures, which are Ni-P nodules formed on the coating catalyzed by hydrogen atoms [34]. Figure 1a shows that the entire surface is homogeneous and dense, without any defects such as porosity or inclusions.…”

Section: The Characteristics Of Nip Coatingmentioning

confidence: 99%

“…Figure 1 a shows the surface of the NiP coating without any treatment observed under a digital microscope (Keyence VHX-600E, Osaka, Japan), and it can be noticed that the coated presents the typical nodular features of cauliflower-like structures, which are Ni-P nodules formed on the coating catalyzed by hydrogen atoms [ 34 ]. Figure 1 a shows that the entire surface is homogeneous and dense, without any defects such as porosity or inclusions.…”

Section: Materials and Equipmentmentioning

confidence: 99%

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Nano-Precision Processing of NiP Coating by Magnetorheological Finishing

Peng

et al. 2023

Nanomaterials

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NiP coating has excellent physicochemical properties and is one of the best materials for coating optical components. When processing NiP coatings on optical components, single-point diamond turning (SPDT) is generally adopted as the first process. However, SPDT turning produces periodic turning patterns on the workpiece, which impacts the optical performance of the component. Magnetorheological finishing (MRF) is a deterministic sub-aperture polishing process based on computer-controlled optical surface forming that can correct surface shape errors and improve the surface quality of workpieces. This paper analyzes the characteristics of NiP coating and develops a magnetorheological fluid specifically for the processing of NiP coating. Based on the basic Preston principle, a material removal model for the MRF polishing of NiP coating was established, and the MRF manufacturing process was optimized by orthogonal tests. The optimized MRF polishing process quickly removes the SPDT turning tool pattern from the NiP coating surface and corrects surface profile errors. At the same time, the surface quality of the NiP coating has also been improved, with the surface roughness increasing from Ra 2.054 nm for SPDT turning to Ra 0.705 nm.

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Section: The Characteristics Of Nip Coatingmentioning

confidence: 99%

Section: Materials and Equipmentmentioning

confidence: 99%