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| 1 | TRIBOLOGICAL AND HIGH SPEED TURNING PERFORMANCE IN Ti_(1-x)Al_xN COATINGS PREPARED BY CLOSE-FIELD UNBALANCED MAGNETRON SPUTTERING显示文摘Titanium-aluminium-nitride (Ti1-xAlxN) coatings were deposited by close-field un balanced magnetron sputtering on M42 steel substrates and WC-6wt%Co inserts at 4 50℃. The tribological behavior was analyzed by sliding against steel and WC- 6wt%Co balls, while the turning performance was evaluated by a conventional tu rning machine at high cutting speeds without using coolants. In the tribological tests, the formation of transfer layer and the variations of hardness of the co atings played an important role for sliding against steel balls. For the coating s sliding against WC-6wt%Co balls, the Ti-Al-N coatings showed a similar frictio n coefficient, but the TiN coating exhibited a lower value. The difference could be explained by the tri-oxidation wear mechanism. In the turning tests, a super ior cutting performance of the coating was found at x=0.45, which endured 38 min utes before the tool flank wear reached the maximum value of 0.3mm, whereas only 20 minutes were endured for the TiN coating. The excellent performance of the c oatings in the turning tests could be explained by the enhanced mechanical prope rties and oxidation/diffusion resistance of the coatings. | P.W. Shum M. Escursell T.H. Wong | 2005 | Acta Metallurgica Sinica(English Letters)2005，18，3： | 1 |
| 2 | Mechanical and tribological properties of amorphous carbon films deposited on implanted steel substrates显示文摘 | P.W. Shum Z.F. Zhou K.Y. Li C.Y. Chan | 2003 | Thin Solid Films2003，，1： | 1 |
| 3 | Structural, mechanical, and tribological studies of Cr–Ti–Al–N coating with different chemical compositions显示文摘 | P.L. Tam Z.F. Zhou P.W. Shum K.Y. Li | 2007 | Thin Solid Films2007，，16： | 1 |
| 4 | XPS, AFM and nanoindentation studies of Ti 1? x Al x N films synthesized by reactive unbalanced magnetron sputtering显示文摘 | P.W. Shum Z.F. Zhou K.Y. Li Y.G. Shen | 2003 | Materials Science & Engineering B2003，，2： | 1 |
| 5 | High temperature oxidation of CrTiAlN hard coatings prepared by unbalanced magnetron sputtering显示文摘 | Z.F. Zhou P.L. Tam P.W. Shum K.Y. Li | 2009 | Thin Solid Films2009，，17： | 1 |
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