| BIAN Da,NI Zi-feng,QIAN Shan-hua,WANG Yong-guang,ZHAO Yong-wu.Influence of GO-TiO2 on Wear Resistance Properties of Phosphate Bonded Coating[J],50(4):56-61 |
| Influence of GO-TiO2 on Wear Resistance Properties of Phosphate Bonded Coating |
| Received:January 15, 2021 Revised:March 16, 2021 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2021.04.004 |
| KeyWord:graphene oxide bonded coating wear crack interfacial adhesive |
| Author | Institution |
| BIAN Da |
College of Mechanical Engineering, Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment and Technology, Jiangnan University, Wuxi , China |
| NI Zi-feng |
College of Mechanical Engineering, Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment and Technology, Jiangnan University, Wuxi , China |
| QIAN Shan-hua |
College of Mechanical Engineering, Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment and Technology, Jiangnan University, Wuxi , China |
| WANG Yong-guang |
College of Mechanical Engineering, Soochow University, Suzhou , China |
| ZHAO Yong-wu |
College of Mechanical Engineering, Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment and Technology, Jiangnan University, Wuxi , China |
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| Abstract: |
| To improve the wear resistance of phosphate bonded coating, graphene oxide-titanium dioxide (GO-TiO2) was prepared with 3-Aminopropyltriethoxysilane as bridge and added into phosphate bonded coating as the reinforcement. SEM and FTIR was used to study the microstructure and phase of GO-TiO2. In addition, the hardness and triboligical behavior were tested with Vickers hardness tester and a tribometer, respectively. Besides, the microstructure of worn surface was studied by SEM and white light interferometer. The results show that TiO2 is grafted to GO through chemical bonds. Besides, the surface of GO becomes rough with the presence of TiO2, which can strengthen mechanical joggle and improve the interfacial adhesive between GO and the coating matrix. The hardness of the coating is improved with the introduction of GO-TiO2. The hardness of the coating without GO-TiO2 is 207.4 HV0.3, while the hardess reaches to 260.4 HV0.3 with the introduction of 1.0% GO-TiO2. In addition, the friction coefficient slightly decreases with GO-TiO2. However, the wear resistance of the coating is obviously increase. The friction coefficient and wear rate of the coating without GO-TiO2 are 0.51 and 2.17´10–4 mm3/(N.m), respectively. When added 1.0% GO-TiO2, the friction coefficient and wear rate decrease to 0.45 and 0.51´10–4 mm3/(N.m), respectively. The wear is mainly attributed to brittle delamination, and the wear resistance of coating is improved because cracks propagation is inhibited by GO-TiO2. |
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