TY - JOUR
T1 - Influence of Zr and O on the structure and properties of TiC(N) coatings deposited by magnetron sputtering of composite TiC 0.5+ZrO 2 and (Ti, Zr)C 0.5+ZrO 2 targets
AU - Shtansky, D. V.
AU - Bondarev, A. V.
AU - Kiryukhantsev-Korneev, Ph V.
AU - Sheveyko, A. N.
AU - Pogozhev, Yu S.
PY - 2012/1/15
Y1 - 2012/1/15
N2 - The effect of Zr and O incorporation on the structure and properties of TiC(N) coatings deposited by DC magnetron sputtering of composite TiC 0.5+xZrO 2 (x=10 and 20wt.%) and (Ti,Zr)C 0.5+10%ZrO 2 targets in an argon atmosphere or reactively in a gaseous mixture of Ar+N 2 is presented. The structure, elemental and phase composition of the coatings were studied by means of X-ray diffraction, scanning electron microscopy, and glow discharge optical emission spectroscopy. The coatings were characterized in terms of their hardness, elastic modulus, and elastic recovery using the load-depth-sensing nanoindentation method. Tribological properties were investigated using ball-on-disk tests against cemented carbide at 25°C and alumina in the temperature range of 25-500°C. To evaluate the oxidation resistance, the coatings were annealed in air at 400, 550, and 600°C for 1h. The obtained results show that the TiZrCO(N) coatings exhibit a peak hardness versus nitrogen partial pressure. The coatings with maximum hardness tested at room temperature against WC+Co and Al 2O 3 counterparts showed low friction coefficients below 0.25. At higher temperatures 300-500°C, the friction coefficient against an Al 2O 3 ball was recorded to be 0.6. The tribological tests of the coatings demonstrated their high wear resistance at moderate temperatures 25-300°C (wear rate, k~10 -6mm 3N -1m -1). Moreover, the coatings with high Zr content were the most wear resistant. The oxidation resistance of the Zr-doped TiCON coatings was not as high as expected and restricted by 600°C. The combination of high hardness about 40GPa with low friction coefficient and superior wear resistance makes the TiZrCON coatings promising candidates for various dry tribological applications.
AB - The effect of Zr and O incorporation on the structure and properties of TiC(N) coatings deposited by DC magnetron sputtering of composite TiC 0.5+xZrO 2 (x=10 and 20wt.%) and (Ti,Zr)C 0.5+10%ZrO 2 targets in an argon atmosphere or reactively in a gaseous mixture of Ar+N 2 is presented. The structure, elemental and phase composition of the coatings were studied by means of X-ray diffraction, scanning electron microscopy, and glow discharge optical emission spectroscopy. The coatings were characterized in terms of their hardness, elastic modulus, and elastic recovery using the load-depth-sensing nanoindentation method. Tribological properties were investigated using ball-on-disk tests against cemented carbide at 25°C and alumina in the temperature range of 25-500°C. To evaluate the oxidation resistance, the coatings were annealed in air at 400, 550, and 600°C for 1h. The obtained results show that the TiZrCO(N) coatings exhibit a peak hardness versus nitrogen partial pressure. The coatings with maximum hardness tested at room temperature against WC+Co and Al 2O 3 counterparts showed low friction coefficients below 0.25. At higher temperatures 300-500°C, the friction coefficient against an Al 2O 3 ball was recorded to be 0.6. The tribological tests of the coatings demonstrated their high wear resistance at moderate temperatures 25-300°C (wear rate, k~10 -6mm 3N -1m -1). Moreover, the coatings with high Zr content were the most wear resistant. The oxidation resistance of the Zr-doped TiCON coatings was not as high as expected and restricted by 600°C. The combination of high hardness about 40GPa with low friction coefficient and superior wear resistance makes the TiZrCON coatings promising candidates for various dry tribological applications.
KW - High-temperature oxidation resistance
KW - Magnetron sputtering
KW - Mechanical and tribological properties
KW - Structure
KW - TiZrCO(N) coatings
UR - http://www.scopus.com/inward/record.url?scp=84855291978&partnerID=8YFLogxK
U2 - 10.1016/j.surfcoat.2011.10.057
DO - 10.1016/j.surfcoat.2011.10.057
M3 - Article
AN - SCOPUS:84855291978
SN - 0257-8972
VL - 206
SP - 2506
EP - 2514
JO - Surface and Coatings Technology
JF - Surface and Coatings Technology
IS - 8-9
ER -