IMECH-IR  > 力学所知识产出(1956-2008)
Alternative TitleDevelopment of YAG Laser Texturing Technology
杨明江; 彭林华; 李正阳
Source Publication应用激光
Other AbstractCalculations showed that 5 mJ energy was enough to vaporate materials in a pit of 100μm diameter and 10μm depth. When a laser pulse with duration 600ns and energy 10mJ shoot on the surface of metal, the power density is 10~8W/cm~2 if it was focused on a region of 100μm diameter. This energy was well enough to evaporate iron within 6.37ns, while plasma plumb was produced. So it was clear that most of laser energy was absorbed by plasma. It was found that major loss of laser energy was inverse bremsstrahlung absorption by plasma. To lower the electron density of plasma, an unique technique was developed to modified laser waveform. When high repetition frequency pulse laser beam radiated on the roller surface, a number of micro-pits were formed, in which metal was melt and solidified. We say the roller was textured. Experiments showed that the tensile strength σb of laser-textured steel sheet increased 4-7% than that of shoot-peening steel sheet, and the yield strength σ0.2 of laser-textured steel sheet decreased 6-7% than that of shoot-peening steel sheet, the stretchability δ10 increased 6-105. Another advantage of laser-texturing sheet was its good lubricity comparing with shot-peening steel sheet.
KeywordYag激光 毛化技术
Indexed ByCSCD
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Document Type期刊论文
Corresponding Author杨明江
Recommended Citation
GB/T 7714
杨明江,彭林华,李正阳. YAG激光毛化技术进展[J]. 应用激光,2002,22(3):323-326,316.
APA 杨明江,彭林华,&李正阳.(2002).YAG激光毛化技术进展.应用激光,22(3),323-326,316.
MLA 杨明江,et al."YAG激光毛化技术进展".应用激光 22.3(2002):323-326,316.
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