Study of the Wear and Corrosion Performance of Hard Coatings Applied by Different Processes on Low Carbon Steel

Carlos Roberto Camello Lima,Rodolfo Libardi,Valtair Antonio Ferraresi,Miguel Angel Reyes Mojena,Hipólito Domingo Carvajal Fals,Flávio Camargo

doi:10.4236/msa.2016.77032

Carlos Roberto Camello Lima, Rodolfo Libardi + Show 4 more

Open Access

https://doi.org/10.4236/msa.2016.77032

Copy DOI

Abstract

Most of materials used in applications that require high wear resistance also undergo corrosive action of the service environment. The damage caused by the combination of both processes on the materials leads to huge economic losses in industry. Hard coatings are widely used as engineering solution to increase the lifetime of components operating in conditions of wear combined with corrosion. Nowadays, the most versatile techniques for applying such coatings are welding and thermal spraying. This work evaluates and compares the properties of coatings obtained by thermal spraying and welding using selected feeding materials. The performance of the coatings in corrosion and erosive wear tests is discussed. From the erosion tests performed for impact angle of 90°, a similar performance for the thermally sprayed tungsten carbide coatings and the welded stainless steel coatings with higher input energy was observed. Welded samples presented the best performance in corrosion test.

Highlights

One of the leading causes for degradation and failure of equipment parts is wear in its diverse forms as abrasionHow to cite this paper: Lima, C.R.C., Libardi, R., Camargo, F., Mojena, M.A.R., Fals, H.D.C. and Ferraresi, V.A. (2016) Study of the Wear and Corrosion Performance of Hard Coatings Applied by Different Processes on Low Carbon Steel
Analysis of Table 4, it can be observed that a coating with high hardness was achieved by using the HVOF spraying in the case of WC17Co, 1042 HV, about 62% higher than the other HVOF coating of Cr3C225NiCr
Tungsten and chromium carbides alloys and stainless steel were deposited onto low carbon steel by thermal spraying or welding processes

Summary

Introduction

One of the leading causes for degradation and failure of equipment parts is wear in its diverse forms as abrasionHow to cite this paper: Lima, C.R.C., Libardi, R., Camargo, F., Mojena, M.A.R., Fals, H.D.C. and Ferraresi, V.A. (2016) Study of the Wear and Corrosion Performance of Hard Coatings Applied by Different Processes on Low Carbon Steel. One of the leading causes for degradation and failure of equipment parts is wear in its diverse forms as abrasion. (2016) Study of the Wear and Corrosion Performance of Hard Coatings Applied by Different Processes on Low Carbon Steel. In several industries, the erosive environment presents corrosive agents making the search for failure prevention still more challenging. Tribo-corrosion is encountered in several technological areas causing damages to equipment parts and compromising safe operation [2]-[4]. As a less costly alternative to parts fully made of wear and corrosion resistant materials, coatings have become a very important element for equipment manufacture and repair. Coatings are thick films and can be applied by several techniques like welding, physical or chemical vapor deposition, electroplating and thermal spraying [7] [8]. Lack of fusion, lack of penetration, slag inclusions, cracks and pores can occur [12] [13]

Objectives

Methods

Results

Conclusion