使用聚多巴胺功能化碳化钒增强电镀镍钨硼涂层的耐磨性和耐腐蚀性

Enhancement of the Wear Resistance and Corrosion Resistance of Electroplated Ni-W-B Coatings Using PDA-Functionalized VC.

作者信息

Gong Xianmin, He Yi, Yan Liping, Zhou Huilian, He Yiling, Wei Kaijun, Chen Quangang, Xu Shijun

机构信息

State Key Lab of Oil & Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China.

College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, China.

出版信息

Langmuir. 2024 Jun 4;40(22):11670-11683. doi: 10.1021/acs.langmuir.4c01054. Epub 2024 May 22.

DOI:10.1021/acs.langmuir.4c01054

PMID:38773956

Abstract

In this study, vanadium carbide (VC) was used as the raw material to synthesize PDA-functionalized VC (P-VC). VC and P-VC were added as nanoreinforced materials to the Ni-W-B coating. The effects of the two nanomaterials on the morphology, wear resistance, and corrosion resistance of the Ni-W-B coatings were investigated and compared. The experimental results show that the surface of the Ni-W-B/P-VC coating is denser and more uniform than that of the Ni-W-B and Ni-W-B/VC coatings, and there are no obvious defects on the surface. According to the hardness test, the Ni-W-B/P-VC coating reaches the highest microhardness of 887.1 HV. According to the friction and wear tests, the Ni-W-B/P-VC coating has the shallowest scratches, the lowest average friction coefficient (COF = 0.274), and the lowest wear rate (9.578 × 10 mm/N). The corrosion resistance is the best, the corrosion rate is 0.0456 mm/y, and the impedance value R reaches 14,501 Ω·cm.

摘要

在本研究中，以碳化钒（VC）为原料合成了聚多巴胺功能化的VC（P-VC）。将VC和P-VC作为纳米增强材料添加到Ni-W-B涂层中。研究并比较了这两种纳米材料对Ni-W-B涂层的形貌、耐磨性和耐腐蚀性的影响。实验结果表明，Ni-W-B/P-VC涂层的表面比Ni-W-B和Ni-W-B/VC涂层更致密、更均匀，表面无明显缺陷。根据硬度测试，Ni-W-B/P-VC涂层的显微硬度最高，达到887.1 HV。根据摩擦磨损测试，Ni-W-B/P-VC涂层的划痕最浅，平均摩擦系数最低（COF = 0.274），磨损率最低（9.578×10 mm/N）。耐腐蚀性最佳，腐蚀速率为0.0456 mm/y，阻抗值R达到14501 Ω·cm。