| JIANG Guang-rui,WANG Hai-quan,LIU Guang-hui,ZHOU Jian,TENG Hua-xiang.Influence of Prior Nickel Plating on Selective Oxidation Behavior of a C-Mn-Si High Strength Steel[J],50(2):304-309 |
| Influence of Prior Nickel Plating on Selective Oxidation Behavior of a C-Mn-Si High Strength Steel |
| Received:January 14, 2020 Revised:May 18, 2020 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2021.02.032 |
| KeyWord:prior nickel plating galvanizing high strength steel selective oxidation diffusion |
| Author | Institution |
| JIANG Guang-rui |
Shougang Technology Research Institute, Beijing , China;Beijing Key Laboratory of Green Recyclable Process for Iron & Steel Production Technology, Beijing , China |
| WANG Hai-quan |
Shougang Technology Research Institute, Beijing , China;Beijing Key Laboratory of Green Recyclable Process for Iron & Steel Production Technology, Beijing , China |
| LIU Guang-hui |
Shougang Technology Research Institute, Beijing , China;Beijing Key Laboratory of Green Recyclable Process for Iron & Steel Production Technology, Beijing , China |
| ZHOU Jian |
Shougang Jingtang Iron & Steel Co., Ltd, Tangshan , China |
| TENG Hua-xiang |
Shougang Technology Research Institute, Beijing , China;Beijing Key Laboratory of Green Recyclable Process for Iron & Steel Production Technology, Beijing , China |
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| Abstract: |
| The study aims to suppress selective oxidation on the surface of an advanced high strength. A C-Mn-Si high- strength steel was electrodeposited with prior nickel plating with the thickness of 100 nm, and then annealed in a galvanizing simulator. The surface morphology and elemental composition of the samples were studied using scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS) attached, respectively. The element depth distribution in the surface layer of the samples was studied through a glow discharge spectrometer (GDS). X-ray photoelectron spectroscopy (XPS) was used to identify the category of the compounds on the external surface. The annealed sample with prior-nickel plating could be found to have a loose nickel layer on the surface and some oxides could be observed on the nickel layer. For the annealed sample without prior-nickel plating, oxides could be found in the boundaries and in the grains. With annealing time prolonging, more oxides appeared on the surface and less nickel content was detected. GDS results revealed that the nickel plating deposited on the surface could inhibit the selective oxidation of alloy elements on the external surface. As annealed for 10 s, enrichment of Mn on the surface was reduced by 52% and enrichment of Si on the surface was reduced by 23%. As annealed for 50 s, enrichment of Mn and Si on the surface were both reduced by 42%. X-ray photoelectron spectroscopy analysis showed that the oxides on the surface of the nickel-plated samples were mainly amorphous oxides, while a large amount of crystalline oxides appeared on the surface of the nickel-free samples. It was indicated that that prior nickel plating with 100 nm thickness can effectively decrease diffusion rate of Si and Mn, suppress the enrichment of Si and Mn on the external surface, change the type of surface selective oxidation products, and reduce the amount of surface oxides on high-strength steel. |
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