TY - GEN
T1 - Oxidation resistance of multicomponent CrTiAIN hard coatings at elevated temperatures
AU - Tam, P. L.
AU - Zhou, Z. F.
AU - Shum, P. W.
AU - Li, K. Y.
PY - 2009
Y1 - 2009
N2 - Quaternary CrTiAlN hard coatings were deposited by closed field unbalanced magnetron sputtering ion plating technique onto steel substrates, and their structural, mechanical, and tribological properties after heat treatment in air at different temperatures (500-900 °C) were studied and compared by means of scanning electron microscopy (SEM), X-ray diffraction (XRD), micro-indentation, and pin-on-disc (POD) tribometer, etc. The onset temperature of oxidation was determined by thermogravimetric analyser (TGA). The compositional depth profiles before and after the heat treatments were examined by X-ray photoelectron spectroscopy (XPS) in order to study the oxidation mechanism. The experimental results indicate that the CrTiAlN coatings have excellent oxidation resistance and thermal stability, and outperform the traditional hard coatings like TiN and TiAlN in terms of higher oxidation temperature, hardness, adhesion, and wear resistance. It is expected that the CrTiAlN coatings with superior properties should have better performance in dry high speed machining. © (2009) Trans Tech Publications.
AB - Quaternary CrTiAlN hard coatings were deposited by closed field unbalanced magnetron sputtering ion plating technique onto steel substrates, and their structural, mechanical, and tribological properties after heat treatment in air at different temperatures (500-900 °C) were studied and compared by means of scanning electron microscopy (SEM), X-ray diffraction (XRD), micro-indentation, and pin-on-disc (POD) tribometer, etc. The onset temperature of oxidation was determined by thermogravimetric analyser (TGA). The compositional depth profiles before and after the heat treatments were examined by X-ray photoelectron spectroscopy (XPS) in order to study the oxidation mechanism. The experimental results indicate that the CrTiAlN coatings have excellent oxidation resistance and thermal stability, and outperform the traditional hard coatings like TiN and TiAlN in terms of higher oxidation temperature, hardness, adhesion, and wear resistance. It is expected that the CrTiAlN coatings with superior properties should have better performance in dry high speed machining. © (2009) Trans Tech Publications.
KW - CrTiAIN coatings
KW - Mechanical properties
KW - Oxidation resistance
KW - Tribological properties
KW - Unbalanced magnetron sputtering
UR - http://www.scopus.com/inward/record.url?scp=72449192211&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-72449192211&origin=recordpage
U2 - 10.4028/www.scientific.net/AMR.75.37
DO - 10.4028/www.scientific.net/AMR.75.37
M3 - RGC 32 - Refereed conference paper (with host publication)
SN - 0878493190
SN - 9780878493197
VL - 75
T3 - Advanced Materials Research
SP - 37
EP - 42
BT - Synthesis and Properties of Surface Coatings - Selected, peer reviewed papers from the 6th International Conference on Materials Processing for Properties and Performance, MP3-2007
T2 - Symposium on Synthesis and Properties of Surface Coatings - 6th International Conference on Materials Processing for Properties and Performance, MP3-2007
Y2 - 13 September 2007 through 16 September 2007
ER -