ItemArticle

Investigation of hot corrosion behavior of plasma sprayed cermet composite coatings on titanium and special steel alloys

Title
Investigation of hot corrosion behavior of plasma sprayed cermet composite coatings on titanium and special steel alloys
Creator
Reddy G, Madhu Sudana; Prasad, C. Durga; Kumar B K, Pavan; Sollapur, Shrishail B.; S, Vishwanatha; Kumar, S. Mohan; Kumar, G.S. Pradeep; Hussain, Mohd Hamid
Description
In the present study, titanium-15 alloy and a special steel alloy (MDN 420) were used as base materials. These components are employed in high-temperature applications. Three types of pure powders were deposited on titanium-15 and a special steel (MDN 420) alloys. The three coatings were 35 % (WC-Co) + 65 % (Cr3C2-NiCr), 70 % NiCrAlY + 30 % TiO2, and 70 % NiCrAlY+25%Cr2O3 + 5%YSZ. The coatings and base alloys underwent various metallurgical, mechanical, and hot corrosion tests. The hot corrosion behavior of the coatings was investigated in a Na2SO460%V2O5 molten salt medium at 700 C, with an accuracy of 5 C. Each test cycle consisting of 50 cycles, with heating followed by 1 h cooling for 20 min. When three coatings were compared, NiCrAlY+Cr2O3 + YSZ coating exhibited superior resistance to hot corrosion on both the alloys. The enhanced corrosion resistance of the NiCrAlY+Cr2O3 + YSZ coating was attributed to the formation of a protective oxide layer containing Cr2O3.The tests were conducted in a highly acidic molten salt environment, with Na2SO4 being less soluble (60 % V2O5). The results showed that the NiCrAlY+Cr2O3 + YSZ coating displayed better corrosion resistance for titanium-15 and MDN 420 alloys, when compared to the other two coatings. The formation of an oxide layer containing Cr2O3 was the main reason for the improved corrosion resistance. 2025 Elsevier B.V.
Source
Surface and Coatings Technology;Volume;499;Issue;;Article No.;131883;
Date
01-01-2025
Publisher
Elsevier B.V.
Subject
Hot corrosion; MDN 420; NiCrAlY/Cr2O3/YSZ; NiCrAlY/TiO2 coatings; Plasma spray; Titanium 15 alloy; WC-co/Cr3C2-NiCr
Coverage
Reddy G M.S., Department of Mechanical Engineering, The Oxford College of Engineering, Karnataka, Bengaluru, India; Prasad C.D., Department of Mechanical Engineering, RV Institute of Technology and Management, Karnataka, Bengaluru, 560076, India; Kumar B K P., Department of Mechanical Engineering, Ballari Institute of Technology and Management, Karnataka, Ballari, India; Sollapur S.B., Department of IIAEM, Faculty of Engineering and Technology, JAIN (Deemed -to- be University), Karnataka, Bengaluru, 562112, India; S V., Department of Mathematics, Faculty of Engineering & Technology, Jain (Deemed-to-be-University), Karnataka, Bengaluru, 562112, India; Kumar S.M., Department of Mechanical Engineering, Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Karnataka, Bengaluru, 560035, India; Kumar G.S.P., Department of Mechanical and Automobile Engineering. CHRIST University, Karnataka, Bengaluru, 560074, India; Hussain M.H., Department of Mechanical Engineering, University of Technology and Applied Sciences, Nizwa, Oman
Rights
Restricted Access; Hardcopy may be available in the library
Relation
ISSN: 2578972;
Format
online
Language
English
Type
Article

Citation

Reddy G, Madhu Sudana; Prasad, C. Durga; Kumar B K, Pavan; Sollapur, Shrishail B.; S, Vishwanatha; Kumar, S. Mohan; Kumar, G.S. Pradeep; Hussain, Mohd Hamid, “Investigation of hot corrosion behavior of plasma sprayed cermet composite coatings on titanium and special steel alloys,” CHRIST (Deemed To Be University) Institutional Repository, accessed June 18, 2026, https://archives.christuniversity.in/items/show/22462.

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