摘要
Laser powder alloying is widely used for tribological applications. As one of the key pa-rameters , absorptivity of powder materials to laser plays an important role in the processing. Themeasurement of laser absorptivity is essential for absorptivity research. In present work, lumpedmethod based on heat transfer is established for laser absorptivity measurement. The absorptivityof some powder materials as Cu, Fe, Al, NiO, Al2O3, ZrO2, SiC, to YAG laser, are investigated.The results show that the absorptivity of powder materials to YAG laser is generally larger thanthat of bulk materials.
Laser powder alloying is widely used for tribological applications. As one of the key pa- rameters , absorptivity of powder materials to laser plays an important role in the processing. The measurement of laser absorptivity is essential for absorptivity research. In present work, lumped method based on heat transfer is established for laser absorptivity measurement. The absorptivity of some powder materials as Cu, Fe, Al, NiO, Al2O3, ZrO2, SiC, to YAG laser, are investigated. The results show that the absorptivity of powder materials to YAG laser is generally larger than that of bulk materials.
