TY - JOUR

T1 - Effect of Particle Morphology and Size Distribution on Cold-Sprayed Pure Titanium Coatings

AU - Wong, W.

AU - Vo, P.

AU - Irissou, E.

AU - Ryabinin, A.N.

AU - Legoux, J.-G.

AU - Yue, S.

PY - 2013

Y1 - 2013

N2 - The effects of commercially pure titanium particle morphology (spherical, sponge, and irregular) and size distributions (mean particle sizes of 20-49 lm) on the cold spray process and resulting coating properties were investigated. Numerous powder and coating characterizations were performed including: powder oxygen and nitrogen contents, powder flowability, powder compressibility, coating microhardness, coating porosity, LOM/SEM analyses, and XRD. Compared to spherical powders, the sponge and irregular CP-Ti powders had higher oxygen content, poorer powder flowability, higher compression ratio, lower powder packing factor, and higher average particle impact velocities. XRD results showed no new phases present when comparing the various feedstock powders to corresponding coatings. A higher particle temperature was also obtained with larger particle size for all feedstock powder morphologies processed with the same set of spray parameters. A spherical powder with 29 lm mean particle size was found to have the

AB - The effects of commercially pure titanium particle morphology (spherical, sponge, and irregular) and size distributions (mean particle sizes of 20-49 lm) on the cold spray process and resulting coating properties were investigated. Numerous powder and coating characterizations were performed including: powder oxygen and nitrogen contents, powder flowability, powder compressibility, coating microhardness, coating porosity, LOM/SEM analyses, and XRD. Compared to spherical powders, the sponge and irregular CP-Ti powders had higher oxygen content, poorer powder flowability, higher compression ratio, lower powder packing factor, and higher average particle impact velocities. XRD results showed no new phases present when comparing the various feedstock powders to corresponding coatings. A higher particle temperature was also obtained with larger particle size for all feedstock powder morphologies processed with the same set of spray parameters. A spherical powder with 29 lm mean particle size was found to have the

KW - cold sprayability

KW - mechanical properties

KW - particle morphology

KW - particle size distribution

KW - particle velocity

KW - titanium

U2 - 10.1007/s11666-013-9951-6

DO - 10.1007/s11666-013-9951-6

M3 - Article

VL - 22

SP - 1140

EP - 1153

JO - Journal of Thermal Spray Technology

JF - Journal of Thermal Spray Technology

SN - 1059-9630

IS - 7

ER -