应用激光, 2010, 30 (6): 447, 网络出版: 2011-03-24
不同金属氧化物对CO2激光吸收性能的比较研究
Comparative Research on Absorption Properties of Different Metal Oxides for CO2 Laser
摘要
在室温下金属材料对激光的反射率很大,尤其对CO2激光的反射率达90%以上,因此在激光相变硬化和熔凝过程中,能提高金属材料对激光吸收率的吸收涂层起到了非常重要的作用。常用金属氧化物大多为半导体或绝缘体,对激光有良好的吸收性能。本文通过金相法考察了6种金属氧化物对CO2激光的吸收性能,并对吸收激光的性能与其能级结构的关系进行了初步探讨。研究表明,TiO2在低或高功率密度下对CO2激光均有较高的吸收率,可以以其作为吸光涂料的主要成分。
Abstract
At room temperature, laser reflectivity to metal materials is very high, especially for CO2 laser (more than 90%). So for laser quenching and laser surface melting, absorbing coatings on metal surface have played a very important role, which can improve laser absorptivity. Most metal oxides widely used are semiconductors or insulators, and have good absorbing properties to laser. Based on metallographic method, the abilities of six kinds of metal oxides to absorb CO2 laser were studied, and the relationship between the laser absorbing abilities of metal oxides and their energy structures was discussed. Results showed TiO2 has high laser absorption ability in low or high power densities and can be used as main component of absorbing coating.
耿广刚, 姚建华, 王维夫, 孔凡志, 张群莉. 不同金属氧化物对CO2激光吸收性能的比较研究[J]. 应用激光, 2010, 30(6): 447. Geng Guanggang, Yao Jianhua, Wang Weifu, Kong Fanzhi, Zhang Qunli. Comparative Research on Absorption Properties of Different Metal Oxides for CO2 Laser[J]. APPLIED LASER, 2010, 30(6): 447.