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Microstructure, Mechanical, and Tribological Behaviour of Spark Plasma Sintered TiN, TiC, TiCN, TaN, and NbN Ceramic Coatings on Titanium Substrate
被引:0
作者:
Walunj, Ganesh
[1
,2
]
Choudhari, Amit
[1
]
Digole, Satyavan
[1
]
Bearden, Anthony
[1
]
Kolt, Omar
[1
]
Bari, Praful
[3
]
Borkar, Tushar
[1
]
机构:
[1] Cleveland State Univ, Dept Mech Engn, Cleveland, OH 44115 USA
[2] SUNY Buffalo, Dept Engn Technol, Buffalo, NY 14222 USA
[3] ZF Grp, 800 Heath St, Lafayette, IN 47904 USA
来源:
基金:
美国国家科学基金会;
关键词:
Ti substrate;
ceramic coating;
spark plasma sintering (SPS);
microstructure;
hardness;
wear resistance;
FRICTION COEFFICIENT;
COMPOSITES;
CARBON;
D O I:
10.3390/met14121437
中图分类号:
T [工业技术];
学科分类号:
08 ;
摘要:
Titanium (Ti) is widely used in structural, maritime, aerospace, and biomedical applications because of its outstanding strength-to-weight ratio, superior corrosion resistance, and excellent biocompatibility. However, the lower surface hardness and inferior wear resistance of the Ti and Ti alloys limit their industrial applications. Coating Ti surfaces can initiate new possibilities to give unique characteristics with significant improvement in the Ti component's functionality. The current research designed and synthesized titanium nitride (TiN), titanium carbide (TiC), titanium carbonitride (TiCN), tantalum nitride (TaN), and niobium nitride (NbN) ceramic coating layers (400 mu m) over a Ti substrate using a spark plasma sintering process (SPS). The coatings on the Ti substrate were compact and consolidated at an SPS temperature of 1500 degrees C, pressure of 50 MPa, and 5 min of holding time in a controlled argon atmosphere. Microstructure investigation revealed a defect-less coating-substrate interface formation with a transition/diffusion zone ranging from 10 mu m to 20 mu m. Among all of the ceramic coatings, titanium carbide showed the highest improvement in surface hardness, equal to 1817 +/- 25 HV, and the lowest coefficient of friction, equal to 0.28 for NbN.
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页数:23
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