The objective of the present study was to laser process a refractory metal – refractory carbide alloy based on W-Ti-C ternary system for severe service applications. The key concept was to cast a eutectic alloy of tungsten and titanium carbide/carbonitride straight from the melt through laser materials processing route. In the present study, a WTi- C ternary alloy has been laser processed into three-dimensional objects and surface protective coatings. Two novel fabrication systems were designed to build threedimensional objects, namely tower nozzle solid freeform fabrication system and axissymmetric laser powder deposition system. W-Ti-C alloy based protective coatings were deposited on graphite substrates, through laser melting of pre-placed powder mixture, to widen the use of carbon structural elements for high temperature applications. A method for depositing W-Ti-C alloy on steel using multi-intermediate layers strategy is discussed and the preliminary results are presented in this study.
| Identifer | oai:union.ndltd.org:UTENN/oai:trace.tennessee.edu:utk_gradthes-1521 |
| Date | 01 December 2008 |
| Creators | Rajput, Deepak |
| Publisher | Trace: Tennessee Research and Creative Exchange |
| Source Sets | University of Tennessee Libraries |
| Detected Language | English |
| Type | text |
| Source | Masters Theses |
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