Hybrid Flash-SPS of TiNiCu0.05Sn with reduced thermal conductivity

• Published in: Journal of alloys and compounds Vol. 837; p. 155058
• Main Authors: Gucci, Francesco, Saunders, Theo Graves, Srinivasan, Bhuvanesh, Cheviré, François, Ferluccio, Daniella A., Bos, Jan-Willem G., Reece, Michael J.
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 05.10.2020; Elsevier BV; Elsevier
• Subjects: Chemical Sciences; Flash sintering; Half-heusler; Heat conductivity; Heat transfer; Heating rate; Material chemistry; Plasma sintering; Power factor; Spark plasma sintering; Thermal conductivity; Thermoelectric; Thermal conductivity; Thermoelectric; Flash sintering; Half-heusler
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2020.155058

TiNiCu0·05Sn was sintered using Spark Plasma Sintering (SPS) and a new derivative processing method, hybrid Flash-SPS (hFSPS). The high heating rate achieved (7700 °C/min) produced almost single-phase samples with high density. The sample sintered at 1040 °C showed a higher power factor and a lower thermal conductivity than the SPS sample, resulting in a higher ZT at 350 °C (0.44 vs 0.35). [Display omitted] •Hybrid Flash-SPS (hFSPS) was used to sinter materials quickly while minimizing thermal gradients.•The TiNiCu0.05Sn was sintered with and without hybrid flash, hybrid flash the was much quicker but just as dense.•The hybrid flash sample sintered at 1040 °C showed a higher power factor and a lower thermal conductivity than the SPS sample.•The Hybrid flash sintered at 1040 °C had a higher ZT at 350 °C (0.44 vs 0.35) compared to SPS.