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发明公开
CN105506717A 一种高含MWCNTs-镍-钨的复合镀层及其制备方法 无效 - 驳回

一种高含MWCNTs-镍-钨的复合镀层及其制备方法
摘要：
本发明公开了一种高含MWCNTs-镍-钨的复合镀层，其制备方法包括以下步骤：(1)将聚乙烯亚胺和硫酸钠加入去离子水中混匀，再加入MWCNTs，200r/min搅拌1h，抽滤、去离子水、60℃干燥，得到PEI改性的MWCNTs；(2)称取柠檬酸三钠、NH4Cl、NaBr、Na2WO4·2H2O、NiSO4·6H2O、改性后的MWCNTs，依次加入去离子水中混匀，得电镀液；(3)将打磨抛光的钢片放入1mol/L的硫酸中进行活化后在电镀液中电镀；(4)电镀过程采用脉冲电沉积法，沉积参数：温度70℃，电流密度5A/dm3，占空比0.8，沉积时间1h。该复合镀层分散性好、成本低。
摘要（英）：

The invention discloses a composite coating with high MWCNTs-nickel-tungsten content. A preparation method for the composite coating comprises the following steps: (1) adding polyethyleneimine and sodium sulfate into deionized water to uniformly mix, then, adding MWCNTs to stir for one hour at a speed of 200r/min, carrying out suction filtration on the deionized water, and drying at a temperature of 60 DEG C to obtain PEI-modified MWCNTs; (2) weighing and sequentially adding trisodium citrate, NH4Cl, NaBr, Na2WO4.2H2O, NiSO4.6H2O and modified MWCNTs into the deionized water to uniformly mix, thereby obtaining an electroplating solution; (3) putting a grinded and polished steel plate into sulfuric acid with concentration being 1mol/L to activate, and then, electroplating the steel plate in the electroplating solution; and (4) adopting a pulse electro-deposition method in the electroplating process, wherein the deposition parameters are as follows: a temperature of 70 DEG C, current density of 5A/dm<3>, a duty ratio of 0.8 and deposition time of one hour. The composite coating is good in dispersion and is low in cost.

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