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材料工程  2015, Vol. 43 Issue (12): 89-94    DOI: 10.11868/j.issn.1001-4381.2015.12.015
  测试与表征 本期目录 | 过刊浏览 | 高级检索 |
取向硅钢表面氧化层的结构及其对渗氮的影响
严国春1, 何承绪1, 孟利1, 马光2, 吴细毛3
1. 北京科技大学 材料科学与工程学院, 北京 100083;
2. 国家智能电网研究院 电工新材料及微电子研究所, 北京 102211;
3. 辽宁省电力有限公司 电力科学研究院, 沈阳 110006
Structure of Surface Oxide Layer and Effect on Nitriding of Grain-oriented Silicon Steel
YAN Guo-chun1, HE Cheng-xu1, MENG Li1, MA Guang2, WU Xi-mao3
1. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China;
2. Department of Electrical Engineering New Materials and Microelectronics, State Grid Smart Grid Research Institute, Beijing 102211, China;
3. Electric Power Research Institute, Liaoning Electric Power Co., Ltd., Shenyang 110006, China
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摘要 采用场发射电子扫描显微镜(FESEM)和能谱仪(EDS)研究取向硅钢经过不同脱碳和保温时间后氧化层的演变规律及氧化层对后续渗氮的影响。结果表明:随脱碳时间的延长,氧化层逐渐变厚,期间伴随着片状SiO2向球状SiO2的转变,而且脱碳后增厚的氧化层更有利于渗氮的进行。氧化层的三层结构有利于渗氮的进行,其中层片状SiO2对渗氮起主要贡献,而球状SiO2层较厚时对渗氮有一定的抑制作用,且当氧化层全为球状SiO2时,渗入氮含量明显减少。氧化层的结构对渗氮后在铁基体中形成的氮化物形态也有影响。
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严国春
何承绪
孟利
马光
吴细毛
关键词 取向硅钢脱碳氧化层无定形SiO2渗氮    
Abstract:The evolution of oxide layer and its influence on nitriding after different decarburization time and holding time in grain-oriented silicon steel was investigated by field emission scanning electron microscopy and energy dispersive spectrometer. The results indicate that oxide layer gets thicker with the decarburization time prolonging and is beneficial to nitriding, accompanying with the process of lamellar silica transform into spherical silica. The three-layer structure of oxide layer is beneficial to nitriding, the main contribution to nitriding comes from lamellar silica, while thicker spherical silica plays certain suppression role in nitriding, the nitriding content of oxide layer with solely spherical silica structure is much less than that of three-layer structure. There are some influences on the morphology of nitride after nitriding process.
Key wordsgrain-oriented silicon steel    decarburization    oxide layer    amorphous silica    nitriding
收稿日期: 2015-01-20      出版日期: 2015-12-23
1:  TG156.8  
通讯作者: 孟利(1978—),男,讲师,博士,主要从事材料的各向异性和织构及组织结构演变研究,联系地址:北京市海淀区学院路30号北京科技大学材料科学与工程学院(100083)     E-mail: lmeng@ustb.edu.cn
引用本文:   
严国春, 何承绪, 孟利, 马光, 吴细毛. 取向硅钢表面氧化层的结构及其对渗氮的影响[J]. 材料工程, 2015, 43(12): 89-94.
YAN Guo-chun, HE Cheng-xu, MENG Li, MA Guang, WU Xi-mao. Structure of Surface Oxide Layer and Effect on Nitriding of Grain-oriented Silicon Steel. Journal of Materials Engineering, 2015, 43(12): 89-94.
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http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2015.12.015      或      http://jme.biam.ac.cn/CN/Y2015/V43/I12/89
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