Regularities of Deposition and Wear of Electrospark Deposited Coatings of NiAl-CrB2 System.
Abstract
Ukrainets M. Regularities of Deposition and Wear of Electrospark Deposited Coatings of NiAl-CrB2 System. NiAl has considerable scientific interest as an electrode material for heat-resistant coatings obtaining using electro-spark alloying. Chromium diboride reinforcing additive introducing into intermetallic in order to improve the wear resistance of such coatings is reasonable. The electrodes of the NiAl-CrB2 system with 15-45 wt.% of chromium diboride additives were obtained by hot pressing. The influence of the CrB2 additive amount on the technological parameters of the alloying process was studied. The wear rate of the obtained coatings was determined by «pin-on-disc» scheme at T = 500° C. It was shown that the CrB2 introduction into NiAl leads to a significant increase of intermetallic wear resistance. Worn surfaces were studied and the regularities of obtained coating wear were determined. Keywords: ESA, intermetallic, NiAl, diboride, CrB2, high-temperature sliding, wear resistance.References
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2. Xie, Y.J., Wang, M.C. Isothermal oxidation behavior of electrospark deposited MCrAlX-type coatings on a Ni-based superalloy, J. Alloys Compd., 2009, No 480, pp. 454–461.
3. Liang, J., Gao, W., Li, Z., He, Y. Hot corrosion resistance of electrospark-deposited Al and Ni Cr coatings containing dispersed Y2O3 particles, Mater. Lett., 2004, No 58, pp. 3280–3284.
4. Miracle, D.B., Darolia, R. NiAl and its Alloys, Structural Applications of Intermetallic Compounds, New York: John Wiley & Sons, 2000, pp. 55 – 74.
5. Guo, J., Wang, Z., Sheng, L., Zhou, L., Yuan, C., Chen, Z., Song, L. Wear properties of NiAl based materials, Prog. Nat. Sci. Mater. Int., 2012, No 22, pp. 414–425.
6. Hawk, J.A., Alman, D.E. Abrasive wear behavior of NiAl and NiAl–TiB2 composites, Wear, 1999, No 225-229, pp. 544–556.
7. Umanskyi, O., Poliarus, O., Ukrainets, M., Antonov, M. Physical-Chemical Interaction in NiAl-MeB2 Systems Intended for Tribological Applications, Welding Journal, 2015, No 94, pp. 225–230.
8. Umanskyi, A.P., Poliarus, E.N., Ukrainets, M.S., Kostenko, A.D. Vlijanie dobavok tugoplavkih boridov na mehanizmy iznashivanija plazmennyh pokrytij na osnove intermetallida NiAl, Problems of Tribology, 2014, No 1, pp. 46–52.
9. Umanskyi, O., Poliarus, O., Ukrainets, M., Martsenyuk, I. Effect of ZrB2, CrB2 and TiB2 Additives on the Tribological Characteristics of NiAl-Based Gas-Thermal Coatings, Key Eng. Mater., 2014, No 604, pp. 20–23.
10. Zubchenko, A.S., Koloskov, M.M., Kashirskij, Ju.V. i dr. Marochnik stalej i splavov. Moskva: Mashinostroenie, 2003. 784 p.
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Published
2016-07-26
How to Cite
Українець, М. (2016). Regularities of Deposition and Wear of Electrospark Deposited Coatings of NiAl-CrB2 System. Problems of Tribology, 80(2), 21–27. Retrieved from https://tribology.khnu.km.ua/index.php/ProbTrib/article/view/530
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