Niti alloy energy storage

Are NiTi shape memory alloys a good PCM?

Motivated by the recent advancements demonstrating the effectiveness of NiTi shape memory alloys (SMAs) as high figure of merit (FOM) phase change materials (PCMs) for thermal management and storage, NiTiHf SMAs were explored as candidate solid-solid PCMs with high temperature capability.

Can NiTi alloys be used for high temperature operations?

Previous studies in the literature have demonstrated that transformation temperatures and functional properties of NiTi can be tailored by alloying with Hf, Pd, Pt, Au, and Zr for high temperature operations up to 500°C , , , , , , , , , , , , .

Are nitihf shape memory alloys a high-temperature solid-solid PCM?

NiTiHf shape memory alloys demonstrate considerable promise as high-temperature solid-solid PCMs.

What is thermal energy storage (TES) using shape memory alloys (SMAs)?

Thermal energy storage (TES) using shape memory alloys (SMAs) offers new design, integration, and performance opportunities in a wide range of technologies.

Do nitihf alloys improve thermal hysteresis?

Although NiTiHf alloys yield significant improvements in FOM and transformation temperatures compared to NiTi, improvements in thermal hysteresis are modest, and therefore in future works, alternative SMA systems should be studied in search of alloys demonstrating high FOM combined with even lower thermal hysteresis.

What is the thermal hysteresis of a binary NiTi alloy?

The data point corresponding to Ni 50.3 Ti 29.7 Hf 20 is circled in red. Thermal hysteresis of the binary NiTi alloy was not reported in , and was therefore estimated based on the measured thermal hysteresis of a NiTi alloy of similar transformation temperatures .