By selecting suitable acidity of preplating bath, the coating quality can also be I...

选择适宜的预镀液的酸度也可以提高镀层质量。

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The invention comprises the following procedures: preplating, etching, chromium plating, washing, removal of hydrogen, hole loosing, washing and drying.

本发明包括镀前工序、刻蚀工序、镀铬工序、水洗工序、除氢工序、松孔工序、水洗烘干工序。

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The effects of the composition and technological conditions of electroless tin preplating bath on the thickness and morphology of the coatings are investigated.

研究了化学镀锡预镀溶液的组成和工艺条件对镀层厚度和表面形貌的影响。

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