MEASUREMENT OF ADHESION PROPERTIES OF Ni2Al3 COATING WITH A MICRO SCRATCH TESTER AND AUTOMATIC SCRATCH TESTER

  • Ningning Li North China University of Water Resources and Electric Power, Zhengzhou
  • Lei Xu School of Materials Science and Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450045, P. R. China
  • Jin Peng School of Materials Science and Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450045, P. R. China
  • Xi Chen School of Materials Science and Engineering, North China University of Water Resources and Electric Power,
  • Mingqi Tang Ural Institute, North China University of Water Resources and Electric Power, Zhengzhou 450045, P. R. China
  • Jiajia Yang School of Materials Science and Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450045, P. R. China
  • Yan Shang School of Mechanical Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450045, P. R. China
DOI: https://doi.org/10.17222/mit.2023.920
Keywords: Ni2Al3 coating, automatic scratch tester, adhesion, cracks

Abstract

A functionally graded Ni2Al3 coating, prepared with a two-step method of nickel electroplating and pack aluminizing, can improve the hardness of low-carbon steel and other surface performance features. However, the adhesion between the coating and the substrate is an important factor affecting these properties. The primary purpose of this study was to introduce a test for determining the adhesion of the Ni2Al3 coating, which included two tools, namely a micro scratch tester (MST) and a WS-2000 automatic scratch tester, used for measuring the coating adhesion and observing the scratch morphology. Results show that the adhesion is about 14 N according to the MST, which is equivalent to 56 N obtained with WS-2000. As the load increases, the scratches gradually become larger and deeper. Finally, the surface morphology shows cracks, indicating that the coating has failed.

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Published
2024-02-06
How to Cite
1.
Li N, Xu L, Peng J, Chen X, Tang M, Yang J, Shang Y. MEASUREMENT OF ADHESION PROPERTIES OF Ni2Al3 COATING WITH A MICRO SCRATCH TESTER AND AUTOMATIC SCRATCH TESTER. MatTech [Internet]. 2024Feb.6 [cited 2025Apr.29];58(1):47–51. Available from: https://mater-tehnol.si/index.php/MatTech/article/view/920
Issue
Vol. 58 No. 1 (2024): Materials and Technology
Section
Articles

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