一、镀层应力测定的目的与意义在电镀过程中。基体与镀层相互作用产生了一定的内应力。对于细薄柔性的基体,当这种镀层应力较大时,往往造成零件变形;而对粗厚不易变形的基体,往往造成镀层裂纹、起泡、脱皮,并会降低零件的疲劳强度,造成应力腐蚀等问题。以我厂生产的××发动机九级压气机转子叶片为例:未镀的钢叶片振动疲劳强度极限为σ_(-1)=51公斤/毫米~2,在氨基磺酸盐中 First, the purpose and significance of coating stress measurement in the plating process. The interaction between the substrate and the coating creates some internal stress. For the thin and flexible substrate, when the coating stress is large, the parts often cause deformation; while not easy to deformation of the thick substrate, often lead to coating cracks, foaming, peeling, and will reduce the fatigue strength of the parts, causing stress Corrosion and other issues. Taking the nine-stage compressor rotor blades made by our factory as an example, the vibration fatigue strength limit of uncoated steel blades is σ _ (-1) = 51 kg / mm ~ 2. In the sulfamate