Evaluation of Thermocyclic Oxidation Behavior of HVOF Sprayed WC-CrC-Ni Coatings
Journal Title: Bonfring International Journal of Industrial Engineering and Management Science - Year 2015, Vol 5, Issue 2
Abstract
In the present study, the WC-CrC-Ni powder is HVOF sprayed on three different Fe-based steels namely SA213-T22, MDN-310 and SUPERFER 800H. Oxidation studies have been conducted on the coated as well as uncoated specimens at 700?C for 50 cycles in air under cyclic heating and cooling conditions. The weight change method was used to establish the kinetics of oxidation. WC-CrC-Ni coated steels showed slow oxidation kinetics and considerably lower weight gains than that of uncoated steels. The superior performance of WC-CrC-Ni coatings can be attributed due to the formation of a compact and protective oxide layer consisting of Cr2O3, NiO and their spinels like NiCr2O4 and NiWO4. The uncoated T22 steel suffered a catastrophic degradation in the form of intense spalling of the scale. The combined technique of X-ray diffraction (XRD), scanning electron microscopy/energy dispersive X-ray analysis (SEM.EDAX) and X-ray mapping were used to analyze the oxidized products of coated and bare substrate steels.
Authors and Affiliations
B. Somasundaram , Ravikiran Kadoli , M. R. Ramesh
Keywords
Related Articles
- EP ID EP111460
- DOI 10.9756/BIJIEMS.10413
- Views 104
- Downloads 0
Social Sustainability and Mixed Landuse, Case Study of Neighborhoods in Nagpur, India
Social sustainability focuses on the type of development that promotes social interaction and inclusion. It gives emphasis to inclusive community, social cohesions, quality of life, social equity and diversity. Segregate...
Bio Fouling Prevention Using Silicone Oil based Composition
Adhesion of the marine fouling microorganisms on the ship hulls causes many problem including extra energy consumptions, high maintenance cost and corrosion. Preventing marine biofouling is an important issue. we report...
Finite Element Analysis of Elastic Stresses around Holes in Plate Subjected to Uniform Tensile Loading
The author reported stress analysis of infinite isotropic plate with a cylindrical circular hole and oblique hole. The present work deals with infinite isotropic plate under uniform tensile load. Three components of diff...
Evaluation of Thermocyclic Oxidation Behavior of HVOF Sprayed WC-CrC-Ni Coatings
In the present study, the WC-CrC-Ni powder is HVOF sprayed on three different Fe-based steels namely SA213-T22, MDN-310 and SUPERFER 800H. Oxidation studies have been conducted on the coated as well as uncoated specimens...
A Study on Marketing Management Practices of Malls in Madurai City
"The scope of marketing practices of Mall Management has been wider than other kinds of retailing formats. Differentiating themselves from the competition is a sure way of emerging a winner, and this positioning is ensur...