TY - GEN
T1 - Dry coated particle for plasma spraying
AU - Briones-Rodríguez, C.
AU - Mayagoitia-Barragán, V.
AU - Cuenca-Alvarez, R.
PY - 2007
Y1 - 2007
N2 - The performance of an in-house designed mechanofusion process and the preparation of composite powders for plasma spraying are investigated in a variety of powdered mixtures including metal/oxide, carbide/oxide, carbide/metal and metal/oxide/carbide. Scanning electron microscopy shows that dry particle coating depends on the thermo-mechanical and chemical properties of the powdered system. In the metal/oxide, carbide/oxide and metal/oxide/carbide powder mixtures, fine ceramic particles coat the surface of the metallic or ceramic coarser particles with no need of binders or solvents. However with the carbide/metal powdered system, an intimate mixture of components is achieved with an incipient dry particle coating. A nearly rounded shape of the final composite particles is induced by the mechanical energy input with no formation of new phases as confirmed by XRD analysis. It is suggested that the coating mechanism is governed by agglomeration and rolling phenomena. Finally these types of powders feature characteristics to be plasma sprayed in air.
AB - The performance of an in-house designed mechanofusion process and the preparation of composite powders for plasma spraying are investigated in a variety of powdered mixtures including metal/oxide, carbide/oxide, carbide/metal and metal/oxide/carbide. Scanning electron microscopy shows that dry particle coating depends on the thermo-mechanical and chemical properties of the powdered system. In the metal/oxide, carbide/oxide and metal/oxide/carbide powder mixtures, fine ceramic particles coat the surface of the metallic or ceramic coarser particles with no need of binders or solvents. However with the carbide/metal powdered system, an intimate mixture of components is achieved with an incipient dry particle coating. A nearly rounded shape of the final composite particles is induced by the mechanical energy input with no formation of new phases as confirmed by XRD analysis. It is suggested that the coating mechanism is governed by agglomeration and rolling phenomena. Finally these types of powders feature characteristics to be plasma sprayed in air.
KW - Agglomeration
KW - Dry particle coating
KW - Mechanofusion process (MF)
UR - http://www.scopus.com/inward/record.url?scp=38349087157&partnerID=8YFLogxK
U2 - 10.4028/0-87849-419-7.37
DO - 10.4028/0-87849-419-7.37
M3 - Contribución a la conferencia
SN - 0878494197
SN - 9780878494194
T3 - Materials Science Forum
SP - 37
EP - 40
BT - Progress in Powder Metallurgy - Proceedings of the 2006 Powder Metallurgy World Congress and Exhibition (PM 2006)
PB - Trans Tech Publications Ltd
T2 - 2006 Powder Metallurgy World Congress and Exhibition, PM 2006
Y2 - 24 September 2006 through 28 September 2006
ER -