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| 盐溶液中20#钢激光渗碳、渗硅的研究 | |
| 引用本文： | 沈曙明,梁工英,袁森,许德胜.盐溶液中20#钢激光渗碳、渗硅的研究[J].中国激光,2003,30(6):571-576. |
| 作者姓名： | 沈曙明 梁工英 袁森 许德胜 |
| 作者单位： | 1. 西安交通大学理学院,陕西,西安,710049;华中科技大学激光技术国家重点实验室,湖北,武汉,430074 2. 西安理工大学材料学院,陕西,西安,710048 3. 华中科技大学激光技术国家重点实验室,湖北,武汉,430074 |
| 基金项目： | 华中科技大学激光技术国家重点实验室基金项目 |
| 摘 要： | 在盐溶液中 ,利用激光对 2 0 # 钢表面进行渗碳、渗硅和相变硬化相结合 ,实现了在对低碳钢表面化学渗碳、渗硅的同时 ,完成激光表面淬火处理。研究表明 ,2 0 # 钢在盐溶液中激光渗碳、渗硅后 ,可将材料表面的碳、硅含量增加 2倍 ;渗层具有一定厚度 ,主要由马氏体和贝氏体组成 ,试样表面的硬度提高到原试样的 2 5～ 3倍 ,耐磨性可达到处理前的 4～ 7 5倍。在浓度为 10 %的H2 SO4溶液中 ,静态腐蚀 2 4 0h后的实验表明 ,2 0 # 钢在经过激光渗硅化学热处理后 ,抗腐蚀能力可提高 4 0 %左右。 |
| 关 键 词： | 激光技术 低碳钢 盐溶液 激光化学热处理 显微结构 |
| 收稿时间： | 2002/3/11 |
Study on Laser Carburizing and Laser Siliconizing of Steel 20# in the Salt Solution |
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| SHEN Shu ming ,LIANG Gong ying ,YUAN Sen ,XU De sheng College of Physics,Xi'an Jiaotong University,Xi'an,Shaanxi ,China College of Materials,Xi'an University of Technology,Xi'an,Shaanxi ,China The State Kay Laboratory of Laser Technology,Huazhong University of Science and Technology,Wuhan,Hubei ,China.Study on Laser Carburizing and Laser Siliconizing of Steel 20# in the Salt Solution[J].Chinese Journal of Lasers,2003,30(6):571-576. | |
| Authors: | SHEN Shu ming LIANG Gong ying YUAN Sen XU De sheng College of Physics Xi'an Jiaotong University Xi'an Shaanxi China College of Materials Xi'an University of Technology Xi'an Shaanxi China The State Kay Laboratory of Laser Technology Huazhong University of Science and Technology Wuhan Hubei China |
| Institution: | SHEN Shu ming 1,3,LIANG Gong ying 1,3,YUAN Sen 2,XU De sheng 3 1College of Physics,Xi'an Jiaotong University,Xi'an,Shaanxi 710049,China 2College of Materials,Xi'an University of Technology,Xi'an,Shaanxi 710048,China 3The State Kay Laboratory of Laser Technology,Huazhong University of Science and Technology,Wuhan,Hubei 430074,China |
| Abstract: | A new heat treatment method that combines carburizing or siliconizing with laser hardening treatment in the salt solution was adopted. Using this method, the laser hardening treatment can be carried out, during surface carburizing and surface siliconizing. Experimental result shows that after laser carburizing and laser siliconizing, the carbon and silicon content in the low carbon steel 20 # surface increases by twice as original steel. A hardening layer consisting mainly of martensite and bainite structure can be obtained, which surface hardness is 1.5～2 times harder than that of original sample. The wear resistance of laser carburizing and laser siliconizing samples is increased 4～7.5 times as original steel. The test of static corrosion in the 10% H 2SO 4 solution for 240 hours shows that the corrosion resistance of steel 20 # after laser siliconizing is about 40% larger than original steel. |
| Keywords: | laser technique low carbon steel salt solution laser chemical heat treatment microstructure |
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