ZHANG Qinghua*,ZHANG Zhengxu,ZHAO Qi.Effect of Manganese Phosphating Treatment on Corrosion Resistance of Materials Used for Automotive Transmission Parts[J].Plating & Finishing,2020,(5):38-43.[doi:10.3969/j.issn.1001-3849.2020.05.0060]
锰系磷化处理对汽车传动件材料耐腐蚀性能的影响
- Title:
- Effect of Manganese Phosphating Treatment on Corrosion Resistance of Materials Used for Automotive Transmission Parts
- 文献标志码:
- A
- 摘要:
- 为了提高汽车传动件常用材料42CrMo钢的耐腐蚀性能，对42CrMo钢进行锰系磷化处理，并考察了表面调整和磷化液温度对磷化膜耐腐蚀性能的影响。结果表明，表面调整后形成的磷化膜结晶细致均匀，晶粒大小较均一，较未表面调整直接形成的磷化膜的耐腐蚀性能有一定的提高；磷化液温度对磷化膜的微观形貌、成分和耐腐蚀性能有较大影响，随着磷化液温度从78 ℃升高到94 ℃，晶粒先细化后粗化，磷化膜致密性先变好后变差；磷化膜中Mn元素质量分数先升高后降低，Fe元素质量分数先降低后升高，而P和O元素质量分数变化不大；磷化膜的腐蚀电位先正移后负移，腐蚀电流密度先降低后升高；表面调整后在86 ℃下形成的磷化膜具有良好的耐腐蚀性能，其腐蚀电位和腐蚀电流密度分别为-527.46 mV、1.997×10-5 A/cm2，对42CrMo钢的保护效率为73.2%，能有效提高42CrMo钢的耐腐蚀性能。
- Abstract:
- 42CrMo steel which was commonly used for automotive transmission parts was treated by manganese phosphating in order to improve its corrosion resistance. The influence of surface conditioning and phosphating solution temperature on the corrosion resistance of phosphating film was investigated. The results show that the phosphating film formed after surface conditioning has fine and even crystals, and the grain size is relatively uniform. Compared with the phosphating film directly formed without surface conditioning, the corrosion resistance of the phosphating film formed after surface conditioning is improved. The phosphating solution temperature has obvious influence on the micromorphology, composition and corrosion resistance of phosphating film. With the rise of phosphating solution temperature from 78 ℃ to 94 ℃, the grains were first refined and then coarsed, and the densification of phosphating film became better first and then worse. The mass fraction of Mn increased first and then decreased, the mass fraction of Fe decreased first and then increased, while the mass fraction of P and O did not change much. The corrosion potential of phosphating film moved forward and then moved negatively, and the corrosion current density first decreased and then increased. The optimal phosphating film formed at 86 ℃ after surface conditioning has excellent corrosion resistance, the corrosion potential and corrosion current density were -527.46 mV and 1.997×10-5 A/cm2, respectively. The protection efficiency of optimal phosphating film on 42CrMo steel was 73.2%, indicating that the optimal phosphating film can effectively improve the corrosion resistance of 42CrMo steel.
参考文献/References:
[1] 黄建斌. 42CrMo轴淬火断裂原因分析及工艺改进[J]. 金属加工(热加工), 2013(13): 36-38.
Huang J B. Cause analysis and process improvement of 42CrMo shaft quenching fracture[J]. Metal Working, 2013(13): 36-38 (in Chinese).
[2] 刘扬泰, 黄玉萍, 杨胜敏. 42CrMo钢气体多元共渗[J]. 金属热处理, 2015, 40(3): 212-213.
Liu Y T, Huang Y P, Yang S M. Gas multicomponent co-diffusion of 42CrMo steel[J]. Heat Treatment of Metals, 2015, 40(3): 212-213 (in Chinese).
[3] Doan V T, Kusmic D, Pospichal M. The change of surface parameters of 42CrMo4 steel treated by surface technologies[J]. ECS Transactions, 2015, 70(1): 137-144.
[4] 李传君, 李凯, 黄婉婉, 等. 激光冲击强化对42CrMo钢耐高温腐蚀性能的影响[J]. 江苏大学学报(自然科学版), 2018, 39(2): 217-221.
Li C J, Li K, Huang W W, et al. Influence of laser shock processing on high temperature corrosion behavior of 42CrMo alloy steel[J]. Journal of Jiangsu University(Natural Science Edition), 2018, 39(2): 217-221(in Chinese).
[5] Kukla M, Panfil D, Michalaki J, et al. The effects of laser surface modification on the microstructure and properties of gas-nitrided 42CrMo4 steel[J]. Optics & Laser Technology, 2016(82): 203-219.
[6] 武计强, 李景才, 魏伟, 等. 离子后氧化对42CrMo钢渗氮组织与耐蚀性的影响及机理分析[J]. 真空科学与技术学报, 2015, 35(5): 575-579.
WU J Q, Li J C, Wei W, et al. Surface modification of nitrided AISI 4140 steel by pulsed air plasma oxidation and improved corrosion-Resistance[J]. Chinese Journal of Vacuum Science and Technology, 2015, 35(5): 575-579 (in Chinese).
[7] 张圣麟, 陈华辉, 李红玲, 等. 常温磷化处理技术的研究现状及展望[J]. 材料保护, 2006, 39(7): 42-47.
Zhang S L, Chen H H, Li H L, et al. Current state and prospect of ambient phosphating technique[J]. Materials Protection, 2006, 39(7): 42-47 (in Chinese).
[8] 王绍明. 新型磷化表面调整剂[J]. 电镀与环保, 2005, 25(6): 19-20.
Wang S M. A novel surface conditioning agent for phosphating[J]. Electroplating & Pollution Control, 2005, 25(6): 19-20 (in Chinese).
[9] 李天统, 陈义庆, 徐小连, 等. 冷轧汽车板表面状态对磷化膜质量的影响[J]. 鞍钢技术, 2010(3): 13-16.
Li T T, Chen Y Q, Xu X L, et al. Effect of surface status of cold rolled automobile steel sheet on quality of phosphating film[J]. Anagng Technology, 2010(3): 13-16 (in Chinese).
[10] Shavlov A V, Pisarev A D, Ryabtseva A A. Corrosion dynamics of electric conductivity of metal films in ice under its structural and phase transformations[J]. Crystallography Reports, 2008(53): 121-129.
相似文献/References:
[1]张思婉*,张建国,张聪正.特种设备用Q390E钢防腐蚀处理研究[J].电镀与精饰,2021,(6):1.[doi:10.3969/j.issn.1001-3849.2021.06.001]
ZHANG Siwan*,ZHANG Jianguo,ZHANG Congzheng.Anti-corrosion Treatment of Q390E Steel for Special Equipment[J].Plating & Finishing,2021,(5):1.[doi:10.3969/j.issn.1001-3849.2021.06.001]
[2]晁 爽,曹晶晶,李河宗,等.doi: 10.3969/j.issn.1001-3849.2025.01.013 微纳SiCP粒度和浓度对化学镀Ni-P-SiCP[J].电镀与精饰,2025,(01):81.
Chao Shuang,Cao Jingjing,*,et al.The influence of micro/nano SiCP particle size and concentration on the structure and properties of electroless Ni-P-SiC P composite coatings[J].Plating & Finishing,2025,(5):81.
备注/Memo
收稿日期： 2020-03-18；修回日期： 2020-04-06
通信作者： 张庆华， email： zhang_shu0208@126.com
基金项目： 甘肃省教育厅课题（2019B-274）