TY - GEN
T1 - A study on the influence of plasma deposited HA and TiO2 coatings on fatigue lives of low-carbon steel specimens with respect to various powder in-flight Properties
AU - Cizek, J.
AU - Khor, K. A.
AU - Siegl, J.
AU - Bensch, J.
PY - 2009
Y1 - 2009
N2 - A study of the influence of plasma sprayed coatings on the fatigue lives of coated specimens was carried out. Hydroxyapatite and TiO2 coatings were deposited under three different spraying conditions onto special dog-bone shaped specimens. Average temperatures and velocities of the powders particles were measured utilizing Spray Watch fastshutter CCD system during the deposition process. The coated specimens were then subjected to mechanical cyclical bend loading (cantilever beam) with constant deflection and the total number of cycles until arbitrarily chosen specimen damage level was recorded. The influence of coatings produced under different spraying combinations on the fatigue lives of the specimens were evaluated with respect to noncoated specimens and the measured in-flight characteristics. It was found the coatings deposited under parameters resulting in high in-flight temperature and velocity of the particles substantially increase the fatigue lives of the coated specimens (up to 46% as compared to grit-blasted only specimens) while the effect on the fatigue live decreases with decreasing values of in-flight properties of the sprayed powders.
AB - A study of the influence of plasma sprayed coatings on the fatigue lives of coated specimens was carried out. Hydroxyapatite and TiO2 coatings were deposited under three different spraying conditions onto special dog-bone shaped specimens. Average temperatures and velocities of the powders particles were measured utilizing Spray Watch fastshutter CCD system during the deposition process. The coated specimens were then subjected to mechanical cyclical bend loading (cantilever beam) with constant deflection and the total number of cycles until arbitrarily chosen specimen damage level was recorded. The influence of coatings produced under different spraying combinations on the fatigue lives of the specimens were evaluated with respect to noncoated specimens and the measured in-flight characteristics. It was found the coatings deposited under parameters resulting in high in-flight temperature and velocity of the particles substantially increase the fatigue lives of the coated specimens (up to 46% as compared to grit-blasted only specimens) while the effect on the fatigue live decreases with decreasing values of in-flight properties of the sprayed powders.
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U2 - 10.1361/cp2009itsc0361
DO - 10.1361/cp2009itsc0361
M3 - Conference contribution
AN - SCOPUS:76749142076
SN - 9781615030040
T3 - Proceedings of the International Thermal Spray Conference
SP - 361
EP - 365
BT - Expanding Thermal Spray Performance to New Markets and Applications - Proceedings of the 2009 International Thermal Spray Conference, ITSC 2009
T2 - Expanding Thermal Spray Performance to New Markets and Applications - 2009 International Thermal Spray Conference, ITSC 2009
Y2 - 4 May 2009 through 7 May 2009
ER -