【摘要】 讨论了镀液组成对镀层成份、结构和表面形貌的影响．结果表明，镀层中的Ｗ，Ｐ和ＳｉＣ含量随着Ｎａ２ＷＯ４·２Ｈ２Ｏ浓度的提高而增加，随着Ｈ３Ｃ６Ｈ５Ｏ７·Ｈ２Ｏ浓度的升高而降低；Ｎａ２ＷＯ４·２Ｈ２Ｏ和Ｈ３Ｃ６Ｈ５Ｏ７·Ｈ２Ｏ浓度对复合镀层的结构影响不大，但对镀层表面形貌影响较大，当Ｎａ２ＷＯ４·２Ｈ２Ｏ的浓度为９０～１５０ｇ／Ｌ，Ｈ３Ｃ６Ｈ５Ｏ７·Ｈ２Ｏ的浓度为１５０～１７０ｇ／Ｌ时，可得到颗粒较细的镀层．更多还原

【Abstract】 Effects of the bath composition on deposit composition, structure and morphology of surface and cross section are discussed. Experimental results show that tungsten, phosphorus and silicon carbide contents in the coating increase with the sodium tungstate concentration, but decrease with increasing citric acid concentration. The concentration of sodium tungstate and citric acid has little effect on the coatings structure, but shows considerable effect on the surface morphology. Deposits with finer particles will be obtained when the concentration of sodium tungstate and citric acid is 90～150 g/L and 150～170 g/L respectively.更多还原