The Best High-Temperature Crucibles for Different Testing Scenarios

What Type of High-Temperature Crucible is Best for TGA vs DSC?

TGA and DSC instruments each test materials differently—using the wrong pan can lead to data errors or damage your equipment.

For TGA, platinum or sealed crucibles handle weight loss and volatile samples under high heat, while for DSC, high-purity aluminum gives fast thermal responses ideal for phase changes and enthalpy.

In my lab, I use platinum or ceramic for TGA up to 1600°C, so samples don’t react with pans or escape. Sealed pans also help for liquids or volatiles. For DSC, anodized aluminum is perfect for standard analysis because it heats quickly and evenly. Table below compares requirements:

Picking pans that match the heating profile and test style for each device keeps results stable and error-free.

Which Crucibles Are Best for Testing High-Performance Materials in Aerospace?

High-performance aerospace tests need crucibles that withstand high cycling, extreme heat, and strict contamination limits.

Platinum and high-density alumina are best for aerospace because they tolerate high thermal shock, resist chemical attack, and last many runs under abrasive samples or rapid cycling.

I use platinum pans for near-vacuum and extreme-tolerance aerospace samples due to their unmatched stability. Alumina comes next, especially for large ceramic matrix or composite parts testing. Here is a summary of aerospace needs:

Choosing between platinum and alumina depends on your test temperature, sample reactivity, and budget.

How to Select a Crucible for High-Temperature Polymer Analysis?

Polymers can degrade, melt, or release volatile compounds—even small issues with the crucible can affect readings or leave residue.

Sealed alumina or platinum crucibles are best for high-temperature polymer analysis; they keep samples stable and reduce contamination by blocking oxygen and preventing mass loss.

In my work testing polymer blends and specialty plastics, I pick sealed pans for volatiles and platinum when looking for complete inertness. Unsealed pans can let light molecules escape, which damages accuracy. Table gives a practical guide:

Clean pans and non-reactive metals are key for accurate, repeatable polymer analysis, especially with new or unknown materials.

What Crucible Material Is Ideal for Environmental and Pollution Testing?

Environmental and pollution tests need pans that resist acids, handle repeated heating, and minimize background contamination for trace analysis.

High-purity alumina and fused silica are ideal for environmental testing; they are stable, affordable, and do not react with most samples or leach trace elements during analysis.

I always use high-purity alumina for waste, water, or soil TGA. Fused silica pans are best for high-sensitivity vapor or trace metal pollution detection. Aluminum or standard ceramic is too risky where trace metals matter. Table below shows these details:

For clean baselines and accurate samples in environmental labs, always avoid metals that could bias the data.

Conclusion

The best crucible choice matches your exact test and material needs, from platinum for stability to alumina or silica for sensitive and budget-friendly environmental labs.

Technical support email:info@redthermo.com