CAJ | 학술논문

通过赫尔槽试验、小槽试验和中试试验,确定了硫酸盐体系三价铬硬铬电镀溶液活性配位体和催化剂的组成和含量,以及镀液的工艺规范,并对镀液和镀层性能进行了测试。结果表明,镀液稳定性好,电流密度范围可达35~50 A/dm2,电流效率为29.8%~34.1%,镀层接合力优良,外观均匀白亮,厚度>40μm,硬度达到996.5 HV,中性盐雾试验>200 h。
통과혁이조시험、소조시험화중시시험,학정료류산염체계삼개락경락전도용액활성배위체화최화제적조성화함량,이급도액적공예규범,병대도액화도층성능진행료측시。결과표명,도액은정성호,전류밀도범위가체35~50 A/dm2,전류효솔위29.8%~34.1%,도층접합력우량,외관균균백량,후도>40μm,경도체도996.5 HV,중성염무시험>200 h。
The composition and concentration including active ligands,catalysts,and the electroplating,process specifi-cations of the hard trivalent chromium sulfate electrolyte were determined by Hull Cell tests,electroplating simulated tests and pilot tests.The properties of the electroplating bathes and the deposits were also measured.The results showed that the process had the advantages of high stabilization,range of current density was up to 35 ~50 A/dm2 ,current efficiency was up to 29.8%~34.1%,the deposit had quality adhesive strength,appearance of uniform bright white,thickness reached more than 40 μm,hardness was up to 996.5 HV,neutral salt spray test reached more than 200 h.