Title: Microstructure and properties of Cu-Sn-Zn-TiO2 nano-composite coatings on mild steel

Journal Article · · Surface and Coatings Technology
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  1. Jiangsu Univ. of Science and Technology (JUST) (China). School of Materials Science and Engineering
  2. Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Physical and Computational Sciences Directorate

Cu-Sn-Zn coatings have been widely used in industry for their unique properties, such as good conductivity, high corrosion resistance and excellent solderability. To further improve the mechanical performance of Cu-Sn-Zn coatings, powder-enhanced method was applied and Cu-Sn-Zn-TiO2 nano-composite coatings with different TiO2 concentration were fabricated. The microstructure of Cu-Sn-Zn-TiO2 nano-composite coatings were investigated by X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM). The mechanical properties of coatings including microhardness and wear resistance were studied. The results indicate that the incorporation of TiO2 nanoparticle can significantly influence the properties of Cu-Sn-Zn coatings. The microhardness of Cu-Sn-Zn coating was increased to 383 HV from 330 HV with 1 g/L TiO2 addition. Also, the corrosion resistance of coating was enhanced. The effects of TiO2 nanoparticle concentration on the microstructure, mechanical properties and corrosion resistance of Cu-Sn-Zn-TiO2 nano-composite coatings were discussed.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
Gansu Jinshi Chemical Co. Ltd., Tianjin City (China); Jiangsu Univ. of Science and Technology (JUST) (China); National Natural Science Foundation of China (NSFC); USDOE
Grant/Contract Number:
AC05-76RL01830; AC06-76RL01830
OSTI ID:
1434658
Journal Information:
Surface and Coatings Technology, Journal Name: Surface and Coatings Technology Vol. 350; ISSN 0257-8972
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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Microstructure and Properties of Duplex Ni-P-TiO2/Ni-P Nanocomposite Coatings journal January 2019
Effect of Ni/Si Mass Ratio and Thermomechanical Treatment on the Microstructure and Properties of Cu-Ni-Si Alloys journal June 2019