| 材料表面改性的一种新技术 |
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| 引用本文： | 沈志刚,李椿萱,吴成,杨思泽.材料表面改性的一种新技术[J].航空学报,1991,12(9):501-505. |
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| 作者姓名： | 沈志刚 李椿萱 吴成 杨思泽 |
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| 作者单位： | 北京航空航天大学
(沈志刚，李椿萱)，中国科学院物理所
(吴成)，中国科学院物理所(杨思泽) |
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| 摘 要： | 本文提出了一种高功率脉冲等离子体束使材料表面改性的新技术。脉冲等离子体束的功率密度约为(1～40)×10~4W/cm~2,运动能为1～5KeV,沉积能为1～25J/cm~2,脉冲时间为60μs。碳钢经脉冲等离子体束处理后,表面有新的氮化物和碳化物相(Fe_3N,(Cr,Fe)_7C_3,Cr_(23)C_6)产生;SEM金相照片表明,在钢表面区域有一层白亮层,它是碳钢高速淬火后所具有的特征;注入元素浓度沿深度的公布近似为高斯分布。表面显微硬度有了显著的提高。
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| 关 键 词： | 材料表面改性 高速淬火 高温等离子体应用 |
A NEW TECHNIQUE FOR MODIFICATION OF MATERIAL SURFACES |
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| Beijing University of Aeronautics and Astronautics Shen Zhigang and Lee Chunhian Chinese Academy of sciences Institute of Physics Wu Cheng and Yang Size.A NEW TECHNIQUE FOR MODIFICATION OF MATERIAL SURFACES[J].Acta Aeronautica et Astronautica Sinica,1991,12(9):501-505. |
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| Authors: | Beijing University of Aeronautics and Astronautics Shen Zhigang and Lee Chunhian Chinese Academy of sciences Institute of Physics Wu Cheng and Yang Size |
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| Institution: | Beijing University of Aeronautics and Astronautics Shen Zhigang and Lee Chunhian Chinese Academy of sciences Institute of Physics Wu Cheng and Yang Size |
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| Abstract: | A new technique utilizing a high power-density pulsed plasma beam for modification of material surfaces is presented. The power density of the pulshed plasma beam ranges (1~40)×104w/cm2, the kinetic energy 1~5 KeV, the deposition energy 1~25 J/cm2, and the pulsed duration is about 60us. The post-treatment samples analyzed by suing the Auger electron spectroscopy, scanning electron microscopy, X-ray diffractometer, and Vicker's microhardness tester. Itis found that the concentration of the injected particles possesses a Gaussian distribution The thermal Zone induced by fast heating-cooling process forms a white-bright layer, indicating that there are new carbide and nitride produced in the surface layer, and thus the microhardness of the surface is increased. |
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| Keywords: | material surface modification fast quench plasma application |
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