Please use this identifier to cite or link to this item:
Title: Feasibility of using low pressure cold gas spray for the spraying of thick ceramic hydroxyapatite coatings
Author: Martín Vilardell, Anna
Cinca i Luis, Núria
Dosta Parras, Sergi
Guilemany, J. M. (José María)
Keywords: Revestiments ceràmics
Ceramic coating
Issue Date: 16-Aug-2018
Publisher: John Wiley & Sons
Abstract: This article deals with the production of thick ceramic hydroxyapatite coatings obtained by Low Pressure Cold Gas Spray (LPCGS) system. Several factors such as powder microstructure, surface roughness and cold gas spray system are here discussed in the build‐up process. The use of nanocrystalline powder composed by fine agglomerates and needle‐like shape microstructure allows the realignment and compaction of individual crystallites to form thick deposits. In addition, the activation of the substrate surface results convenient for the first impinging particles anchored properly. Then, layer by layer, particles can remain attached leading to coating build‐up. Additionally, the use of low shock pressure as well as constant feeding system provided by LPCGS system lead to homogeneous coatings in comparison with High Pressure Cold Gas Spray (HPCGS) system. The successful coating build‐up has been achieved not only by the use of an agglomerated feedstock powder, but also by previous surface treatment and the use of the low pressure system. The obtaining of HA components by LPCGS is promising within biomedical field. An improvement of component strength is also suggested by means of thermomechanical analysis of the powder. The performance of a post heat‐treatment leads to an increase in HA strength, as well as crystal size.
Note: Versió postprint del document publicat a:
It is part of: International Journal of Applied Ceramic Technology, 2018, vol. 16, p. 221-229
Related resource:
ISSN: 1546-542X
Appears in Collections:Articles publicats en revistes (Ciència dels Materials i Química Física)

Files in This Item:
File Description SizeFormat 
683417.pdf1.17 MBAdobe PDFView/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.