0.19Fe0.7Ni0.11固溶體組成。電化學結(jié)果表明，添加一定Cr含量的激光熔覆層表現(xiàn)出更好的耐腐蝕性。C28涂層表現(xiàn)出較高的開路電位值和較低的鈍化電流密度，并且具有更大的阻抗模量和電荷轉(zhuǎn)移電阻。隨著Cr含量的增加，在含氯的硫代硫酸鹽溶液中鈍化膜的厚度變厚，膜的缺陷變少。Mott-Schottky分析表明，溶液中激光熔覆層上表面形成的鈍化膜表現(xiàn)為n型和p型半導體。;The effect of Cr addition on the corrosion resistance of the laser-cladding Ni-Cr-Mo coatings was evaluated in chloride solution with thiosulfate by microstructure observation and electrochemical measurements. Results show that very similar microstructures and phase compositions are tested by scanning electron microscope and X-ray diffraction. Both eutectic and dendrite structures are observed, and the coatings are mainly composed of the γ-Ni solid solution of Cr, Mo, W, Fe, and Cr0.19Fe0.7Ni0.11 solid solution. The electrochemical results confirm that the laser-cladding coating with the special Cr addition behaves better corrosion resistance. The coating C28 performs higher values in open circuit potential and lower passive current density, especially the larger modulus of the impedance and charger transfer resistance. With increasing Cr content, the passive film is much thicker and the defects of the films are less in chloride solution with thiosulfate. The Mott-Schottky reveals that the passive film formed on the top surface of the laser-cladding coatings in solution behaves as n-type and p-type semiconductors."/>