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A wear-resistant coating—Oxidized graded multilayer TiN/W coating |
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| Authors: | SH Yao YL Su KW Cheng |
| Affiliation: | a Chang Jung Christian University, Kway Jen, Tainan 711, Taiwan b National Cheng Kung University, Department of Mechanical Engineering, Tainan 701, Taiwan c Chienkuo Technology University, Institute of Mechatronoptic System, Changhua 500, Taiwan |
| Abstract: | Combining sputtering technology using an industrial-scale four-target DC closed-field unbalanced magnetron sputtering ion plating system (CFUBMSIPS™) with post heat treatment, a graded multilayer TiN/W coating, consisting of five layers, was synthesized and its outmost W layer was transformed to lubricious WO3 successfully. The coatings were characterized by using GDOES, GXRD, a Rockwell C indentation tester, a nanoindentation tester, and a scratching tester. Wear behavior of coatings was evaluated by using a pin-on-disc tribometer. Through proper post heat treatment, the multilayer TiN/W coating, in spite of having a lower nano-hardness, showed good adhesion, much better wear performance and lower friction coefficient compared with the reference monolayer TiN coating. |
| Keywords: | Graded multilayer TiN/W coating Mechanical properties Multilayer structure Thin films Wear |
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