SUMMARY
The discussion focuses on the effective removal of titanium from tantalum crucibles, highlighting the challenges due to the solubility of both metals in certain acids. Participants mention that titanium is soluble in hydrofluoric and sulfuric acids, but caution that tantalum is also affected under similar conditions. Techniques such as heating the crucible upside down or using an energy source to induce titanium atom desorption are suggested, with an emphasis on the importance of vapor pressure over melting temperature. Ultimately, the consensus leans towards the necessity of acquiring a new crucible due to the difficulty in ensuring complete titanium removal.
PREREQUISITES
- Understanding of metal solubility in acids, specifically hydrofluoric and sulfuric acids.
- Knowledge of vapor pressure concepts related to titanium and tantalum.
- Familiarity with high-temperature processing techniques for metals.
- Experience with crucible applications in high-temperature environments.
NEXT STEPS
- Research the solubility characteristics of titanium and tantalum in various acids.
- Learn about vapor pressure and its implications for metal evaporation at high temperatures.
- Investigate advanced techniques for metal desorption in crucible applications.
- Explore options for sourcing high-quality tantalum crucibles for specific applications.
USEFUL FOR
This discussion is beneficial for materials scientists, metallurgists, and engineers involved in high-temperature processing and crucible applications, particularly those dealing with titanium and tantalum interactions.