An Investigation into the Effects of Process Conditions on the Tribological Performance of Pack Carburized Titanium with Limited Oxygen Diffusion
- De Montfort University, Faculty of Technology, School of Engineering and Sustainable Development (United Kingdom)
In the present study, a new pack carburization technique for titanium has been investigated. The aim of this treatment is to produce a titanium carbide/oxycarbide layer atop of an extended oxygen diffusion zone [α-Ti(O)]. The effects of treatment temperature and pack composition have been investigated in order to determine the optimal conditions required to grant the best tribological response. The resulting structural features were investigated with particular interest in the carbon and oxygen concentrations across the samples cross section. The optimization showed that a temperature of 925 °C with a pack composition of 1 part carbon to 1 part energizer produced surface capable of withstanding a contact pressure of ≈ 1.5 GPa for 1 h. The process resulted in TiC surface structure which offers enhanced hardness (2100 HV) and generates a low friction coefficient (μ ≈ 0.2) when in dry sliding contact with an alumina (Al{sub 2}O{sub 3}) ball. The process also produced an extended oxygen diffusion zone that helps to improve the load bearing capacity of the substrate.
- OSTI ID:
- 22860443
- Journal Information:
- Journal of Materials Engineering and Performance, Vol. 27, Issue 6; Conference: ICETINN 2017: International Conference on Emerging Trends in Nanoscience and Nanotechnology, Gangtok, Sikkim (India), 16-18 Mar 2017; Other Information: Copyright (c) 2018 ASM International; http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA); ISSN 1059-9495
- Country of Publication:
- United States
- Language:
- English
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