[发明专利]黑色硬铬化学镀液及生产方法

摘要

本发明公开一种黑色硬铬化学镀液，其特征在于所用原料质量百分比如下： 铬酸酐60~70%、硝酸铬0.5~1.5%、硝酸0.2~0.6%、氟化钾0.2~0.6%、硼酸0.5~1%、碳酸钡0.5~1%、酒石酸钾钠0.5~1%及水余量。生产方法按如下步骤进行：将计算称量的水加入到反应釜中，加温到45℃，开动搅拌器控制转速60转/min，再将计算称量的铬酸酐、硝酸铬、硝酸、氟化钾、硼酸、碳酸钡及酒石酸钾钠依次加入到反应釜中，边加入边搅拌至混合均匀，待溶液温度降到室温时，放料包装。

主权项

一种黑色硬铬化学镀液，其特征在于所用原料质量百分比如下：                  铬酸酐                                                         60~70%                      硝酸铬                                                        0.5~1.5%                      硝酸                                                            0.2~0.6%                      氟化钾                                                        0.2~0.6%                      硼酸                                                           0.5~1%                      碳酸钡                                                      0.5~1%                      酒石酸钾钠                                                0.5~1%                      水                                                                余量。