Advanced search
Start date
Betweenand
Related content
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Evaluation of mechanical properties of WC-Co and CrC coatings obtained from powder and flexible cored wire feedstock materials

Full text
Author(s):
Sanchez Orozco, Mario [1] ; Reyes Mojena, Miguel Angel [1] ; Carvajal Fals, Hipolito Domingo [1] ; Camello Lima, Carlos Roberto [2]
Total Authors: 4
Affiliation:
[1] Oriente Univ, Coll Mech Engn, Avda Amer S-N, Santiago De Cuba 90900 - Cuba
[2] Univ Metodista Piracicaba, Prod Engn Grad Program, Rod Luis Ometto, Km 24, BR-13451900 Sao Paulo - Brazil
Total Affiliations: 2
Document type: Journal article
Source: MATERIALS RESEARCH EXPRESS; v. 6, n. 9 SEP 2019.
Web of Science Citations: 0
Abstract

This paper assesses the microstructure, porosity, microhardness (Hv) and fracture toughness (K-C) of cemented carbides coatings deposited by High-Velocity Oxygen Fuel (HVOF) and Flame (FSFC) spray processes. Three types of coatings were applied for each process from similar feedstock materials in powder and cored wire form. Measurements of fracture toughness were conducted with the Vickers indentation method in the cross section of the deposited layers. An image processing system was applied for the analysis of porosity, showing a globular morphology of the pores in both processes. The experimental results allowed corroborating that the coatings applied by HVOF using powder feedstock have lower porosity than those achieved with the Flame Spray of cored wire material (FSFC). In HVOF and FSFC processes, the porosity of the coating could be an important factor, but when kept in low values, the decrease in Hv and K-C are mainly related to the microstructural changes in the coating. The results also allow considering the FSFC technique as a feasible alternative particularly in applications such as internal part of industrial pipes where it becomes difficult to use HVOF due to accessibility problems. (AU)

FAPESP's process: 17/25363-0 - Influence of the adhesion of coatings applied by different thermal spray processes on their wear and corrosion properties
Grantee:Carlos Roberto Camello Lima
Support Opportunities: Research Grants - Visiting Researcher Grant - International