| 摘要: |
| 针对镍合金丝加工过程中表面氧化皮除去速度慢，造成加工成本高、效率低的问题，采用腐蚀失重法及表面光洁度检测法研究了镍合金的电化学快速抛光工艺，分析了抛光液各组分及工艺参数对镍合金丝抛光质量的影响。结果表明：镍合金丝快速抛光溶液以磷酸为主，加速剂A为有机醇，降低溶液的黏度和提高抛光液的渗透能力，加速剂B为酸性催化剂，加速H2的析出，减少阴极极化，并提高液体的搅拌功能，减少抛光介质的扩散阻力。当磷酸体积分数为85%，添加剂A体积分数为9%，添加剂B质量浓度为60 g/L，抛光电流密度为20 A/dm2，抛光时间达到30 s可使镍合金丝表面的氧化皮完全除去，延长抛光时间到60 s可使镍合金丝表面达到一级抛光水平。 |
| 关键词: 电化学抛光 镍合金 腐蚀失重 |
| DOI： |
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| 基金项目:陕西省重点实验室项目（2011HBSZS011） |
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| Rapid Polishing Technology of Nickel Alloy Wire |
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LU Man, FENG La-jun, ZHUANG Hong-fang, ZHANG Jing1,2
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1. School of Material Science and Engineering, Xi’an University of Technology, Xi’an 710048;2. Jiangsu Qidi Alloy Co.,LTD, Danyang 212351, Jiangsu
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| Abstract: |
| In the fabricating process, low speed of removing oxide scale on the surface of nickel alloy wire has resulted in low manufacturing efficiency and high cost. Fast electrochemical polishing technology was studied using weightloss method and smooth finish test in this paper. The effect of the composition of the polishing solution and the process parameters on the polishing quality of the nickel alloy wire was analyzed. The result show that the main ingredient of the most effective and rapid polishing solution is phosphoric acid with the addition of polishing accelerating agents of A and B. Additive A is mainly organic alcohol, which can reduce the viscosity of the solution and improve the penetration ability of polishing solution. Additive B is acid catalyst, which can accelerate the separation of H2, reduce polarization of the cathode and diffusion resistance of polishing medium and improve the liquid mixing function. The oxide scale on the surface of the nickel alloy wire was completely removed in 85% phosphoric acid adding 9% A and 60 g/L B with polishing time of 30 s, at current density of 20 A/dm2 and polishing temperature of 30-50 ℃. With polishing time of 60 s, the surface of the nickel alloy wire reached the first grade of polishing degrees. |
| Key words: electrochemical polishing nickel alloy corrosion weight-loss |
