Reactive gas shielding during laser surface alloying for production of hard coatings
| Autor: | Richard Martukanitz, S. M. Kelly, S. Suresh Babu, M. Murugananth |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Materials science
Titanium carbide Shielding gas Metallurgy Surfaces and Interfaces General Chemistry Condensed Matter Physics Laser Indentation hardness Surfaces Coatings and Films Carbide law.invention chemistry.chemical_compound chemistry law Electromagnetic shielding Materials Chemistry Deposition (phase transition) Inertial confinement fusion |
| Zdroj: | Surface and Coatings Technology. 200:2663-2671 |
| ISSN: | 0257-8972 |
| Popis: | The effects of nitrogen addition to shielding gas during laser surface alloying with a mixture of 80 wt.% 431-type stainless steel and 20 wt.% titanium carbide powders were investigated. Microstructural characterization of the laser deposits indicated that titanium carbide melted and re-precipitated as fine carbides from the liquid melt during cooling. With 100% nitrogen shielding and the same powder mixtures, a deposition with increased hardness was obtained. The microstructural evolution in the deposit was calculated with equilibrium thermodynamic calculations. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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