Thesis supervisor: Dorina Kovács
Location of studies (in Hungarian): Department of Materials Science and Engineering Abbreviation of location of studies: ATT
Description of the research topic:
a.) Preliminaries:
Surface treatments are important technologies in different areas of industrial parts. Coatings and diffusion layers can also improve the surface hardness, wear and corrosion resistance. In laboratory circumstances, a few topics of these treatments (especially carburizing, nitriding and their variant) was researched in the Department of Materials Science and Engineering. In this topic, the research can be related to industrial use.
b.) Aim of research:
The aim of the research is to analyze the damage of the coated parts and then give a solution for the recoating without manufacturing a new one. To find an answer, it is possible or not which reparation techniques could be usable with surface treatments.
c.) Tasks, main items, necessary time:
Literature review on surface treatments and re-surface treatment techniques. Find and carry out damaged surface treated parts (with wear, cracks, breaks) and analyze the cause of the damage (1-2. semester). Figure out the reparation and carry out the experiments of recoating (2-4. semester). Investigation the effects of the recoating (4-6. semester). Publication of the results in Hungarian and foreign journals domestic and international conferences (3-8. semester). Preparation and submission of the dissertation (6-8. semester)
d.) Required equipment:
The samples and most of the treatments are available from our industrial partners. The equipment for the analysis can be found in the department. Other test methods can be performed in the department's external laboratory.
e.) Expected scientific results:
Understanding the mechanisms of surface treatment in complicated geometries. Find an answer for the existence of recoating considered to be economically relevant.
f.) References:
Kovács Dorina, Dobránszky János: Effects of Thermochemical Surface Treatments on the Industrially Important Properties of X2CrNiMo 17-12-2 Austenitic Stainless Steel, Periodica Polytechnica Mechanical Engineering, 2019,
Kovács Dorina, Dobránszky János, Bonyár Attila: Effect of different active screen hole sizes on the surface characteristic of plasma nitrided steel. RESULTS IN PHYSICS 12 pp. 1311-1318., 8 p. (2019)
Kovács Dorina, Kemény Alexandra, Dobránszky János, Iban Quintana: Effects of plasma nitriding on tempered steel. IOP Conference Series: Materials Science and Engineering 426: 012027 (2018)
Sopousek J et al.: Carbon and Nitrogen Redistribution in Weld Joint of Ion Nitrided 15CrMoV 2-5-3 and Advanced P91 Heat-Resistant Steels. JPEDAV (2006) 27:363-369
Alphonsa J et al.: Plasma nitriding on welded joints of AISI 304 stainless steel. Surface & Coatings Technology 228 (2013) S306–S311
Required language skills: English Number of students who can be accepted: 1
Deadline for application: 2024-10-15
2024. IV. 17. ODT ülés Az ODT következő ülésére 2024. június 14-én, pénteken 10.00 órakor kerül sor a Semmelweis Egyetem Szenátusi termében (Bp. Üllői út 26. I. emelet).
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