论文部分内容阅读
用热电偶计和热象仪探测靶升温，积分球－光电转换放大测量反射率，金相显微图象数据处理和电子天平称量获得激光照射质量和熔融质量等诊断技术，对连续波（波长１．３１５μｍ）氧碘化学激光（ＣＷ／ＣＯＩＬ），与ＬＦ６Ｍ板相互作用的有效热耦合系数α＿（ｅｆｆ）和热耦合率α＿ａ，进行了实验测量。当照射靶面激光强度Ｉ≈（０．６０～１．１３）ｋＷ／ｃｍ￣２和发生熔融时，α＿（ｅｆｆ）≈０．１６～０．１８和α＿ａ≈０．２０～０．２５（工业商品铝表面）；α＿（ｅｆｆ）≈０．１１和α＿ａ≈０．１２～０．１４（表面加工粗糙度１６μｍ）。当Ｉ≈０．０７～０．１１ｋｗ／ｃｍ￣２和表面不发生熔融时，α＿ａ≈０．０９～０．１０（工业商品铝表面），α＿ａ≈０．０２～０．０３（表面加工粗糙度１．６μｍ）。
Using the thermocouple meter and thermal imager to detect the target temperature rise, integrating sphere - photoelectric conversion magnification measurement reflectance, metallographic microscopic image data processing and electronic balance weighed to obtain the laser irradiation quality and melt quality diagnostic techniques such as continuous wave (wavelength 1 .315μm) Oxy-iodine chemical laser (CW / COIL), the effective thermal coupling coefficient α eff and the thermal coupling coefficient α_a of the interaction with LF6M were measured. Α eff (eff) ≈ 0.16 to 0.18 and α_a ≈ 0.20 to 0.25 (when the laser intensity I ≈ (0.60 ~ 1.13) kW / cm ~ Industrial aluminum surface); α_ (eff) ≈0.11 and α_a≈0.12 to 0.14 (surface finish roughness of 16 μm). When I≈0.07 ~ 0.11kw / cm ~ 2 and the surface does not melt, α_a≈0.09 ~ 0.10 (industrial commercial aluminum surface), α_a ≈ 0.02 ~ 0.03 (rough surface finish Degree of 1.6 μm).