Experimental Investigation on Hot Corrosion, Oxidation and Microstructure of WC Based Cermet HVOF Coating

Kumar, Naveen; Choubey, Vikas Kumar

doi:10.1007/s11085-023-10179-x

Cited by 6 publications

(1 citation statement)

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“…Numerous researchers have examined the corrosion caused by the deposit at the fireside. Alkali sulphates, which accumulate on the surface of alloy components and promote hot corrosion degradation because of less melting eutectics between Fe2(SO4)3 and Na2SO4 and or K2SO4 or both, happen at relatively low temperatures [20][21][22][23], are the most prevalent forms of sulphates. Studies on cobalt, nickel, and Fe base alloys have shown that hot corrosion may initiate as low as 550 °C.…”

Section: Introductionmentioning

confidence: 99%

Behaviour of thermally sprayed coating for hot corrosion applications

Alam,

Kumar,

Das

2024

J. Electrochem. Sci. Eng.

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As modern air engines’ working temperatures are increasing, materials and coatings' hot corrosion resistance characteristics gain significant attention. Hot corrosion is a type of degradation at high temperatures that involves oxidizing or sulphidation of the substrate behind a layer of salt melt deposit, which either causes the development of a thick layer of sulphide scale or the penetration of sulphur via grain boundaries into the matrix to a deeper depth. It may notably change the microstructure, phase composition, and characteristics of the thermally sprayed coating. In recent years, thermally sprayed cermet coatings on steel have been more well-liked as a possible method for enhancing hot corrosion resistance. This review paper qualitatively summarizes the recent development of thermal sprayed coatings to improve hot corrosion performance.

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Section: Introductionmentioning

confidence: 99%