Production and Characterisation of Metastable Al2O3-TiO2 Coatings Obtained by APS plus Quench

被引：1

作者：

Cano, I. G. ^{[1
]}

Dosta, S. ^{[1
]}

Caldeira, R. ^{[1
]}

Miguel, J. R. ^{[1
]}

Guilemany, J. M. ^{[1
]}

机构：

[1] Univ Barcelona, Dept Ciencia Mat & Engn Met, Thermal Spray Ctr CPT, E-08028 Barcelona, Spain

来源：

ADVANCED MATERIALS FORUM IV | 2008年 / 587-588卷

关键词：

Metastability; Nanostructured ceramics; Thermal Spray;

D O I：

10.4028/www.scientific.net/MSF.587-588.153

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

It is well known that microstructure evolution during rapid solidification depends on the rate between undercooling and solidification velocity. Microstructural evolution in a non-equilibrium solidification process depends critically on the melt undercooling and growth (solidification) velocities of competing phases. One way of obtaining metastable structures is by Thermal Spray Technology. Metastable coatings can be produced starting from microstructured powders through Atmospheric Plasma Spray (APS) technique, followed by a quenching route. The initial powders are melted during the spraying and deposited over a substrate that is quenched with nitrogen feeders, producing metastable coatings. The obtained coatings were characterized using XRD, SEM, FESEM and TEM in the Thermal Spray Centre (CPT) of the University of Barcelona. The properties of such coatings were studied by hardness, obtaining promising results.

引用

页码：153 / 156

页数：4