Comparative Analysis of Diffusion Metallization Coatings Applied on Steel Parts

Arif Mammadov; Vugar Mammadov

doi:10.56801/MME1020

Authors

Arif Mammadov Prof. Dr.
Vugar Mammadov Dr

DOI:

https://doi.org/10.56801/MME1020

Keywords:

diffusion metallization, steel, austenite growth, overheating, burnout, chrome-boronizing, nitriding, nitro-cementation.

Abstract

In this paper the positive and negative aspects of diffusion metallization of steels were reviewed. It was shown that at high heating temperatures and prolonged exposure under these temperatures, steels show a tendency to enlarge austenitic grain. Overheating can occur at high exposure temperatures (T>1000ᵒC), which can be rectified by repeated heating however if burning of the steel microstructure occurs, it cannot be corrected. Given these circumstances, when assigning diffusion metallization modes, it is necessary to consider the factor of overheating or burning of steel in the process of exposure to high temperatures. To avoid this phenomenon, it is recommended to use alternative low-temperature processes of diffusion saturation of steels. Nitriding, nitro-cementation, gas-thermal spraying of the surface of steels are shown as such examples. It was suggested that these processes in comparison with diffusion metallization are more promising and acceptable for the restoration of worn surfaces of steels in the manufacture of parts of specialized equipment. Given that the parts of specialized equipment work in extreme conditions, repeated high-temperature heating of these steels is not recommended.
To overcome the shortcomings of the diffusion metallization, the most frequently used coatings are applied by CVD, thermal spray, and cloth cladding techniques. As an alternative promising solution, the development of innovative methods of diffusion saturation, like an ion plantation of atoms on a relatively cold surface of the part could also be considered. It is shown that diffusion metallization is most acceptable for saturation of the surface of non-ferrous metals and alloys with the hardest and wear-resistant compounds.

References

Gulyaev, A.P. Metallurgy. Textbook for universities. 6th ed. Rev. and Dol. Metallurgy, 1986, 544 p.

Dubinin G. N. Diffusion chrome plating of alloys. Moscow: Mechanical Engineering, 1964, 451 p.

Metallurgy and technology of materials. Textbook for universities / Solntsev Yu.P., Veselov V.A., Demyantsevich V.P. et al. Moscow: Metallurgiya, 1986, 544 p.

Lakhtin, Yu.M., Leontieva, V.P. Materials science. Textbook for higher technical educational institutions. – 3rd ed. Rev. and Dol. - Moscow: Mechanical Engineering, 1990, 528 p.

Machine-building materials. Monograph. Rakhmanov S.R., Mamedov A.T., Bespalko V.N. et al. –NmetAU-AzTU. Baku – "Sabah", 2017, 410 p.

Lakhtin, Y.M. Fundamentals of Materials Science. - M.: Metallurgy, 1983, 320 p.

Goldstein M.Ts., Grachev S.V., Veksler Yu.G. Special steels. Textbook for universities. 2nd ed. Rev. and Dol. - Moscow: MISIS, 1999, 408 p.

Gulyaev, A.P. Metallurgy. . - M.: Metallurgy, 1977, 576 p.

Novikov, I.I., Stroganov, G.B., Novikov, A.I. Metallurgy. - Moscow: MISIS, 1994, 480 p.

Kuzin O.A., Yatsyuk R.A. Metaloznovstvo ta termina obrabotka Metaliv. Pidruchnik. – Lviv; Afisha, 2002, -304 p.

Mamedov A.T., Gadzhiyeva S.M. Influence of the density of iron-based powder materials on the process of their chrome plating // Successes of modern science., Belgorod RF., Volume 2, No. 6, 2017, pp. 191-196.

Mamedov A.T., Gadzhiyeva S.M. Changes in the composition and structure of diffusion coatings as a result of friction during mutual contact // Bulletin of Mechanical Engineering, 2017, No. 7, pp. 48-50.

Guseynov A.G., Nazarov I.A., Asadov Sh.A. Strengthening of parts of special – purpose products by diffusion metallization//herald of the Azerbaijan Engineering Academy, 2022, Vol. 14, No.3, Pp. 54-63 (in Azerbaijan)

Solntsev Yu.P., Pryakhin B.I., Voitkun F.M. Materials science. - Moscow: MISIS, 1999, - 600 p.

Materials Science: Textbook for Universities / B.N. Arzamasov. I.I. Sidorin, G.F. Kosolapov et al./Under the general editorship of B.N. Arzamasov. – 2nd ed. Ispr. and dol. - Moscow: Mechanical Engineering, 1986, 384 p.

Powder metallurgy and spray coatings. Textbook for universities. V.N.Antsiferov, G.V.Bobrov, L.K. Druzhinin and others. - M.: Metallurgy, 1987, 792 p.

Mammadov V.A., Tacon K.P., Davies B., Ahmedov N.S., “Coatings help to improve centrifugal pump reliability”, Proceedings of the 12 European Fluid Machinery Congress, October 2014, Edinburgh, UK

Bloch, H. P. and Geitner, F. K., 1997, “Practical Machinery Management for Process Plants-Machinery Failure Analysis and Troubleshooting”, 3rd Edition, Houston, Texas: Gulf Publishing Company.

Buchanan E. R., 1986, “An Overview of Hardfaced Coatings for Industrial Use”’ Proceedings of the Third International Pump Users Symposium, Turbomachinery Laboratory, Texas A&M University, College Station, Texas, pp.91-96.

Trucker Jr. R.C., 1986, “Coatings for Centrifugal Pump Compoents”’ Proceedings of the Third International Pump Users Symposium, Turbomachinery Laboratory, Texas A&M University, College Station, Texas, pp.107-110.

McCaul C. and Kaufold R., 1992, “Evaluation of Coatings for Resistance to Abrasive and Adhesive Wear in Pump Components”, Proceedings of the Ninth International Pump Users Symposium, Turbomachinery Laboratory, Texas A&M University, College Station, Texas, pp.89-95.

Hennecke F.W., 1999, “Life cycle costs of pumps in chemical industry”, Chemical Engineering and Processing 38, pp.511-516.

Cropper M.S., Schmid R.K. and Mohanty M., 2000, “Increasing Pump Life in Abrasive Service Through State-of-the-Art Surface Protection”, Proceedings of the 17th International Pump Users Symposium, Turbomachinery Laboratory, Texas A&M University, College Station, Texas, pp.87-101.

McPherson S. and Summa C., 2009, “High Energy Abrasive Service Pump Upgrade”, Proceedings of the 25th International Pump Users Symposium, Turbomachinery Laboratory, Texas A&M University, College Station, Texas.

Wiltz T., Hertel D., Kimball D., Newman T, Zielewski C., 2011, “Wear Reducing Technology Newly Applied to Severe Pumping Services”, Proceedings of the 28th International Pump Users Symposium, Turbomachinery Laboratory, Texas A&M University, College Station, Texas, pp.342-370.