【摘要】 对亚硒酸－铜盐－磷酸体系钢铁常温发黑的配方及工艺进行了研究。筛选出了较为理想的配方。对影响常温发黑质量的各种因素进行了分析和探讨。实验结果表明，亚硒酸－铜盐－磷酸发黑体系较之常用的硒－铜体系在耐蚀方面有较明显的优点。更多还原

【Abstract】 Formulas and technology of steel blackening at room temperature have been studied. Through the study an optimum formula has been selected. Various factors affecting the blackening quality are analyzed and discussed. The experiment result shows that the seleniou acid copper salt phosphoric acid system has advantge of anti corrosion over selenium copper system.更多还原