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首页> 外文期刊>International Journal of Electrochemical Science >Effect of Electrochemical Bath Composition on the Preparation of Ni-W-Fe-P Amorphous Alloy
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Effect of Electrochemical Bath Composition on the Preparation of Ni-W-Fe-P Amorphous Alloy

机译：电化学浴液组成对Ni-W-Fe-P非晶态合金制备的影响

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The effect of nickel sulfate and sodium tungstate concentrations in an electrolytic bath on the process of obtaining the Ni-W-Fe-P alloy in the presence of a complexing agent and at high pH is investigated in the present work. The full 22 factorial planning points plus two central points are used for the development of the work. For this study, within the range of the proposed variables, the optimum concentrations found were 0.02 M nickel sulfate and 0.09 M sodium tungstate, achieving a 497 HV microhardness. The alloys obtained showed nodules and microcracks on their surfaces. It was observed that an increase in the sodium tungstate concentration in the bath favored the increase in the tungsten content, and this had a direct influence on the microhardness and corrosion resistance behavior. The best results were obtained with a tungsten content of approximately 18 at%. Values of tungsten above 22 at% in the film favored the increase in internal tension, thus promoting a greater number of microcracks, and these caused a reduction in the microhardness and corrosion resistance. All the coatings were amorphous.
机译：在本工作中，研究了电解浴中硫酸镍和钨酸钠浓度对在络合剂存在下和高pH下获得Ni-W-Fe-P合金的过程的影响。全部22个阶乘规划点以及两个中心点都用于工作的开发。对于这项研究，在建议的变量范围内，发现的最佳浓度为0.02 M硫酸镍和0.09 M钨酸钠，达到497 HV显微硬度。所获得的合金在其表面上显示出结核和微裂纹。观察到浴液中钨酸钠浓度的增加有利于钨含量的增加，这直接影响了显微硬度和耐腐蚀性。钨含量约为18 at％时可获得最佳结果。膜中钨的含量高于22 at％有利于内部张力的增加，从而促进了更多的微裂纹，并且这些降低了显微硬度和耐腐蚀性。所有涂层都是无定形的。

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