Dry and Wet Wear Characteristic of TiO2 Thin Film Prepared by Magnetic Sputtering in Ringer Solution

Document Type : Original Research Article

Authors

1 Department of Metallurgy and Materials Engineering Karaj Branch, Islamic Azad University Karaj, Alborz, Iran

2 Materials and Energy Research Center, Meshkindasht, Alborz, Iran

Abstract

In this research, a thin film of TiO2 was applied on AZ91D using the method of magnetic sputtering. Microstructure investigations were conducted using field emission scanning electron microscope (FESEM) and X-ray diffraction (XRD). Wear resistance for the coating was investigated using the pin on the disk in the form of dry and in the Ringer's solution. the worn surface of the samples was investigated using scanning electron microscopy (SEM) asfter this test. Meanwhile, the level of hardness and flatness of the surface after coating was investigated using Vickers microhardness tester and roughness tester. Results indicated that the coating was formed uniformly and had the globular morphology and very good coherence with the thickness of 90nm, which is seemingly formed at the interface of the coating and substrate of the MgTi2O5 and Mg2TiO4 spinels. The roughness of the surface decreased as much as 20% by applying the coating. Applying the coating decreased the coefficient of friction and increased wear resistance in both of the environments. Following the application a thin film of TiO2, wear mechanism was transferred from severe abrasive to mild abrasive in the dry environment and cleavage crater in the Ringer's solution.

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Advanced Ceramics Progress
Volume 5, Issue 4 - Serial Number 18
December 2019
Pages 30-37

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History

  • Receive Date: 31 October 2019
  • Revise Date: 15 December 2019
  • Accept Date: 31 December 2019

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