(1. 福建信息職業(yè)技術(shù)學院 機電工程系，福州 350003；
2. 高雄應(yīng)用科技大學 模具工程系，高雄 80706)
摘 要: 采用復(fù)合電鍍技術(shù)在黃銅基體上制備Ni-cBN復(fù)合鍍層；研究添加和未添加CTAB界面活性劑、鍍浴pH值、電流密度、鍍浴中cBN微粉濃度、攪拌速度等參數(shù)對復(fù)合鍍層微觀組織、顯微硬度和耐磨性的影響。結(jié)果表明：添加CTAB能顯著提高復(fù)合鍍層耐磨性，并且隨著鍍層cBN共析量和分散性的增加復(fù)合鍍層的耐磨性提高；適宜的工藝條件如下：CTAB添加量為0.15 g/L，鍍浴pH值為3，電流密度為4 A/dm2，攪拌速度為550 r/min，鍍浴中cBN濃度為2.5 g/L。統(tǒng)計分析結(jié)果表明：復(fù)合電鍍參數(shù)間相互影響很大，未添加CTAB時，電流密度與攪拌速度相互影響最顯著；添加CTAB后，電流密度與pH值的相互影響、鍍浴中cBN微粉含量與攪拌速度的相互影響最顯著。
關(guān)鍵字: cBN微粒；復(fù)合鍍層；復(fù)合電鍍；氨基磺酸鎳；界面活性劑CTAB；耐磨性
（1. Department of Mechanical and Electrical Engineering, Fujian Polytechnic of Information Technology,
Fuzhou 350003, China;
2. Department of Mold and Die Engineering, National Kaohsiung University of Applied Science, Kaohsiung 80706）
Abstract:The composite coatings of Ni and nano/microsized cBN particle were prepared on Cu substrate using the co-electrodeposition process. The effects of the process variables such as the addition of the CTAB surfactant, pH value, current density, cBN content in the bath and stirring speed of the bath on the microstructure, hardness and abrasion resistance of the coatings were studied. The results indicate that the abrasion resistance for the Ni-cBN film increases with the cBN content in the coating and the film grown in the CTAB-containing bath has greater abrasion resistance than the one without CTAB due to the dispersing effect of CTAB. The suitable operation conditions were found to be as follows: CTAB content of 0.15 g/L in the bath, pH value of 3 in the bath, current density of 4 A/dm2, stirring speed of 550 r/min, cBN content of 2.5 g/L in the bath. In addition, the statistics analysis shows that the interaction effects among the process variables are apparent. The interaction effect between the current density and the stirring speed is the highest for the no CTAB-containing bath, while the interaction effects between the current density and pH value and between the cBN content in the bath and stirring speed are obvious for the CTAB-containing bath.
Key words: nano/microsized cBN particle; composite coating; co-electrodeposition; nickel sulfanate; CTAB surfactant; abrasion resistance
