表面纳米化硅钢薄带的低温渗硅与参数的影响<sup>*</sup>

doi:10.11901/1005.3093.2014.458

材料研究学报

2015, Vol. 29

Issue (5): 359-364 DOI: 10.11901/1005.3093.2014.458

本期目录 | 过刊浏览

表面纳米化硅钢薄带的低温渗硅与参数的影响^*

刘刚¹(

),莫成刚¹,沙玉辉²,赵骧²,左良²

1. 东北大学研究院沈阳 110819
2. 东北大学材料电磁过程研究教育部重点实验室沈阳 110819

Low-temperature Siliconizing of Silicon Steel Thin Strip with a Nanostructured Surface Layer and Effect of Treatment Parameter

Gang LIU^1,^**(

),Chenggang MO¹,Yuhui SHA²,Xiang ZHAO²,Liang ZUO²

1. Research Academy, Northeastern University, Shenyang 110819, China
2. Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education,
Northeastern University, Shenyang 110819, China

引用本文:

刘刚,莫成刚,沙玉辉,赵骧,左良. 表面纳米化硅钢薄带的低温渗硅与参数的影响^*[J]. 材料研究学报, 2015, 29(5): 359-364.
Gang LIU, Chenggang MO, Yuhui SHA, Xiang ZHAO, Liang ZUO. Low-temperature Siliconizing of Silicon Steel Thin Strip with a Nanostructured Surface Layer and Effect of Treatment Parameter[J]. Chinese Journal of Materials Research, 2015, 29(5): 359-364.

全文: PDF(1967 KB) HTML

摘要:

对硅钢依次进行喷丸、冷轧和固体粉末渗硅, 测试了表层的组织、物相和成分。结果表明: 喷丸后硅钢表层产生尺寸为10 nm左右的纳米晶, 91%的冷轧使表层纳米晶的尺寸略有增加。冷轧样品(在硅粉+卤化物中)在500^oC即可实现渗硅, 提高渗硅温度或在较高的温度下延长保温时间均能增加化合物层的厚度, 而卤化物的含量影响不大。在较低的温度渗硅后化合物层为单一的Fe₃Si相, 随着温度的升高、时间的延长以及卤化物含量的增加FeSi相的含量提高。

关键词 ：金属材料, 硅钢, 喷丸, 渗硅, 组织

Abstract：

Silicon steel thin strip was firstly surface shot peened, then cold rolled and finally siliconized by pack cementation process, The microstructural evolution was examined of the steel with the treatment processing. Results show that shot peening can induce the formation of noncrystalline (about 10nm in size) in the top surface layer, the grain size of the noncrystalline increases slightly after cold rolling. A compound layer can be obtained after siliconizing at 500^oC in Si powder+halide on the shot peened and cold roll steel strip, its thickness increases with the increasing temperature and holding time, however on which the halide content exhibits little effect. After siliconizing at lower temperature the compound layer consists of single phase Fe₃Si, and the increase of temperature, holding time and halide content is helpful for the formation of FeSi phase.

Key words： metallic materials silicon steel shot peening siliconizing structure

收稿日期: 2014-08-26

基金资助:^*国家高技术研究发展计划2012AA03A505资助项目。

作者简介: 刘刚

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图1 喷丸样品表面和20 mm深度的TEM像和SAED谱

图2 喷丸+冷轧样品表面和20 mm深度的TEM照片和SAED谱

图3 喷丸+冷轧样品渗硅后横截面的形貌和沿深度方向硅的分布

图4 样品表面的XRD谱

图5 渗硅参数对喷丸+冷轧样品化合物层厚度的影响

图6 喷丸+冷轧样品经过不同参数渗硅后表面的物相

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