A study on the sintering of fine titanium powders
| Autor: | Pelletier, Roger, Lefebvre, Louis-Philippe |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Popis: | It has been an objective for many years to produce near net shape metal injection molding (MIM) components with density and mechanical properties close to those obtained with wrought titanium and titanium alloys. Recent developments enabled the production of MIM parts with high density while maintaining the fine microstructures leading to good mechanical properties to the sintered materials. It is, however, still unclear how the MIM conditions are providing the high densities obtained. Indeed, it was observed that these fine powders don’t reach such high density when loose sintered at the same temperature. It appears that the MIM route creates favorable conditions that promote densification. This paper investigated potential sources responsible for the improved densification when using the MIM process. The main hypotheses investigated were the higher initial relative density of the MIM parts, the capillary forces generated by the slowly vanishing liquid residual binder that improves the initial contact between individual particles prior to sintering, and the presence of binder decomposition products that could contribute to activate sintering. PMTi 2022, Powder Metallurgy and Additive Manufacturing of Titnium, August 29-31, 2022, Montreal, Canada |
| Databáze: | OpenAIRE |
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