TY - JOUR
T1 - Improving tribological properties and machining performance of a-C coatings by doping with titanium
AU - Kao, W. H.
AU - Su, Y. L.
AU - Yao, S. H.
N1 - Funding Information:
The authors thank the National Science Council of the Republic of China for financially supporting this research under contract no. NSC 93-2212-E-270-006-.
PY - 2006/10
Y1 - 2006/10
N2 - In this study, a-C:Tix% coatings with various levels of Ti addition are deposited on cemented tungsten carbide (WC-Co) substrates using a medium-frequency twin magnetron sputtering and unbalanced magnetron sputtering system. This study investigates the tribologlcal properties of the coatings by conducting wear tests against an AISI 1045 steel counterbody under a cylinder-on-disk line contact wear mode using an oscillating friction and wear tester. Additionally, turning tests and high-speed through-hole drilling tests are performed on AISI 1045 steel counterbodies and PCB workpieces, respectively, to investigate the machining performance of coated turning cutters and microdrills. The a-C:Ti x% coatings not only have improved tribological properties but also demonstrate enhanced machining performance. For sliding against the AISI 1045 steel counterbody under loads of 10 and 100 N, the results show that the optimal friction and wear resistance properties are provided by the a-C:Ti13% and a-C:Ti3% coatings, respectively. Meanwhile, the a-C:Ti20% and a-C:Ti51% coatings yield the optimal turning and drilling performance, respectively.
AB - In this study, a-C:Tix% coatings with various levels of Ti addition are deposited on cemented tungsten carbide (WC-Co) substrates using a medium-frequency twin magnetron sputtering and unbalanced magnetron sputtering system. This study investigates the tribologlcal properties of the coatings by conducting wear tests against an AISI 1045 steel counterbody under a cylinder-on-disk line contact wear mode using an oscillating friction and wear tester. Additionally, turning tests and high-speed through-hole drilling tests are performed on AISI 1045 steel counterbodies and PCB workpieces, respectively, to investigate the machining performance of coated turning cutters and microdrills. The a-C:Ti x% coatings not only have improved tribological properties but also demonstrate enhanced machining performance. For sliding against the AISI 1045 steel counterbody under loads of 10 and 100 N, the results show that the optimal friction and wear resistance properties are provided by the a-C:Ti13% and a-C:Ti3% coatings, respectively. Meanwhile, the a-C:Ti20% and a-C:Ti51% coatings yield the optimal turning and drilling performance, respectively.
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U2 - 10.1361/105994906X136098
DO - 10.1361/105994906X136098
M3 - Article
AN - SCOPUS:33750144629
SN - 1059-9495
VL - 15
SP - 525
EP - 534
JO - Journal of Materials Engineering and Performance
JF - Journal of Materials Engineering and Performance
IS - 5
ER -