脉冲电铸非晶态镍磷合金试验研究
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摘要
为了满足电铸厚层非晶态镍磷合金的需求,通过在氨基磺酸镍-亚磷酸体系电铸液中使用脉冲电流获得了非晶态镍磷合金铸层,研究了脉冲参数对非晶态镍磷合金铸层的影响;通过改变平均电流密度、占空比和脉冲频率,研究其对铸层组成及硬度性能的影响。结果表明:随着平均电流密度的增大,铸层中的磷含量呈下降趋势;随着占空比的增大,铸层中的磷含量略呈下降趋势,随着脉冲频率的增大,铸层中的磷含量呈上升趋势。磷含量是镀层结构的决定因素,电铸试验条件对铸层结构的影响是通过对铸层中磷含量的影响而发挥作用;铸层的非晶化程度随着磷含量的升高而提高,铸层硬度随着磷含量的升高而降低。
Amorphous Ni-P alloy coatings were prepared from a bath containing Ni(NH2 SO3)2 and H3 PO3 by pulse DC power so as to find the influence on coatings of pulse parameters. And the impact on component,microstructure and surface morphology of coatings by changing current density,duty cycle and pulse frequency was studied. The results show that the content of P declines with the increase of current density and slightly decreases with the duty cycle,and it rises as pulse frequency increases. The effects of changing electroforming conditions on coating structure is determined by the content of P. The change trend of the degree of amorphization of coatings is same as that of the content of P. The HV hardness of coatings decreases with the enlargement of the content of P.
Amorphous Ni-P alloy coatings were prepared from a bath containing Ni(NH2 SO3)2 and H3 PO3 by pulse DC power so as to find the influence on coatings of pulse parameters. And the impact on component,microstructure and surface morphology of coatings by changing current density,duty cycle and pulse frequency was studied. The results show that the content of P declines with the increase of current density and slightly decreases with the duty cycle,and it rises as pulse frequency increases. The effects of changing electroforming conditions on coating structure is determined by the content of P. The change trend of the degree of amorphization of coatings is same as that of the content of P. The HV hardness of coatings decreases with the enlargement of the content of P.
引文
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[13]王宏智,苗荣荣,张智贤,等.电镀非晶态Ni-P合金的研究进展[J].电镀与精饰,2010,32(5):26-32.
[14]吴玉程,邓宗钢.非晶态镍磷合金的组织结构与性能[J].中国有色金属学报,1998,8(3):415-419.
[2] BRENNER A,COUCH D E,WILLIAMS E K.Electrodeposition of alloys of phosphorus with nickel or cobalt[J]. Journal of Research of the National Bureau of Standards,1950,44(1):109.
[3]张启富,涂抚洲.非晶态镍磷合金电沉积机理的研究[J].电镀与涂饰,2001,20(1):1-6.
[4]郭金彪,王玉,李辉勤,等.电沉积非晶态镍磷合金晶化过程研究[J].热加工工艺,2008,37(16):80-82.
[5]李荻,刘贵荣.非晶态镍磷合金电沉积的研究[J].北京航空航天大学学报,1990(4):27-31.
[6] ZOIKIS-KARATHANASIS A,PAVLATOU E A,SPYRELLIS N. Pulse electrodeposition of Ni-P matrix composite coatings reinforced by SiC particles[J]. Journal of Alloys and Compounds,2010,494(1-2):396-403.
[7] Gao Yujun,MA Liqun,CAO Xinxin,et al. Study on hydrogen evolution electrocatalytic performance of Ni-P alloy electrode by pulse and direct current electrodeposition[J]. Electroplating and Finishing,2010,29(6):1-3.
[8]陈均武,何世桓.电铸原理与工艺[M].北京:化学工业出版社,2010.
[9] ZELLER R L,LANDAU U. Electrodeposition of Ni-P amorphous alloys[J]. Journal of the Electrochemical Society,1992,139(12):3464-3469.
[10]陈叶,费敬银,王磊,等.脉冲电沉积法制备高P镍基合金镀层[J].中国腐蚀与防护学报,2012,32(6):501-506.
[11]龙慧.单脉冲电沉积镍磷合金及其复合镀层的研究[D].长沙:湖南大学,2012.
[12]王子涵,杨滨,马岩,等.脉冲频率对电沉积CoFe合金镀层组织和磁性能的影响[J].兰州理工大学学报,2010,36(2):10-14.
[13]王宏智,苗荣荣,张智贤,等.电镀非晶态Ni-P合金的研究进展[J].电镀与精饰,2010,32(5):26-32.
[14]吴玉程,邓宗钢.非晶态镍磷合金的组织结构与性能[J].中国有色金属学报,1998,8(3):415-419.