Oxygen and Hydrogen Determination in Titanium Hydride (TCH600)

Importance of the Topic

Determining oxygen and hydrogen levels in titanium hydride is critical for quality control in powder metallurgy, metal foaming, and advanced material synthesis. Accurate measurement of these elements ensures material purity, predictable mechanical properties, and reliable performance in applications ranging from sintering to hydrogen storage.

Objectives and Study Overview

This application note outlines a robust method for simultaneous determination of hydrogen and oxygen in titanium hydride using the LECO TCH600 inert gas fusion analyzer. The study aims to define optimized instrument parameters, sample preparation procedures, and calibrations to deliver precise, repeatable results under both low- and high-temperature conditions.

Methodology and Instrumentation

Samples of titanium hydride powder or chips are weighed into nickel capsules alongside graphite powder and placed into a graphite crucible. The TCH600 analyzer performs a two-stage fusion: a low-temperature step to extract hydrogen, followed by a high-temperature step to quantify oxygen. Key instrument settings include:

• Analyzer: LECO TCH600 inert gas fusion unit
• Pre-analyze purge: 60 s; mass entry auto-analysis disabled
• Outgas: 3 cycles, 15–20 s purge, 5 s cool, 6000 W power
• Hydrogen analysis: 120 s minimum, 1200–5200 W ramp and hold
• Oxygen analysis: 200 s minimum, 5200 W sustained
• Integration delays: 5 s for oxygen, 10 s for hydrogen

Calibration employs reagent-grade TiH₂ standards for hydrogen and certified oxygen references. Blank corrections and drift adjustments follow LECO operator procedures.

Main Results and Discussion

Typical analyses of reagent-grade TiH₂ (0.08 g) yielded oxygen values around 0.52 % (±0.002 %) and hydrogen values near 4.02 % (±0.01 %). Repeated measurements demonstrate excellent precision and stability across multiple runs. The low-temperature hydrogen extraction step prevents interference from oxygen and ensures clear peak separation.

Benefits and Practical Applications

The described method offers:

• Rapid, accurate dual-element analysis in a single run
• Minimal sample preparation and consumable costs
• High precision suitable for QA/QC and research laboratories
• Adaptability for related materials such as titanium carbides or nitrides

This technique supports material certification, process optimization, and development of hydrogen-based energy carriers.

Future Trends and Possibilities

Advancements may include integration with mass spectrometry for real-time gas analysis, further reduction of analysis time through optimized furnace profiles, and expanded application to other metal hydrides. Automation of sample handling and cloud-based data management will enhance throughput and traceability. Emerging research in battery and fuel-cell technology will drive demand for precise hydrogen quantification in novel materials.

Conclusion

The LECO TCH600 method provides a reliable, efficient approach for measuring oxygen and hydrogen in titanium hydride. Its combination of low- and high-temperature fusion steps yields high-quality data essential for industrial and research applications.

References

• LECO Corporation. Oxygen and Hydrogen Determination in Titanium Hydride. Application Note, Form No. 203-821-475, St. Joseph, MI, USA, 2014.