The influences of multilayer cladding on the microstructure and hardness of laser-clad layers were studied by metallographic microscope and hardometer.
采用金相显微镜和硬度计研究了多层熔覆对激光熔覆层微观组织和硬度的影响。
2
The microhardness of JCW-S-AM coatings prepared by high velocity electric arc spraying on conditions of different process parameters was tested by hardometer.
采用超音速电弧喷涂设备在不同工艺参数条件下制备JCW - S - AM涂层，利用显微硬度计测定各种涂层的显微硬度。
3
Aemission spectrometer, micro-hardometer, optical microscope and scanning electron microscope were used to analyze the reason of crack on connecting rod unit assembly for piston of car engine.