Thermally-insulated flash sintering

SCRIPTA MATERIALIA

卷:162

Article

Biesuz, Mattia^1,2  Dong, Jian¹  Fu, Shuai¹  Liu, Yunlong¹  Zhang, Haiwen¹  Zhu, Degui¹  Hu, Chunfeng¹  Grasso, Salvatore¹ 

[1] Southwest Jiaotong Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Adv Technol Mat, Chengdu 610031, Sichuan, Peoples R China

[2] Univ Trento, Dept Ind Engn, I-38123 Trento, Italy

关键词: Falsh sintering;    Field-assisted sintering;    Sintering;    Ceramics;    Elelctric current-assisted sintering;   

DOI  :  10.1016/j.scriptamat.2018.10.042

来源: Elsevier

【 摘 要 】

The use of thermal insulation in flash sintering is proposed in this work. The results show that during conventional flash processes heat losses by radiation accounts for similar to 90% of the total energy input. Apart from being energy inefficient, heat losses have a negative effect on sample homogeneity. By employing insulating felts or powder beds these losses can significantly reduced while resulting in an improved densification. Analytical calculation, corroborated by experimental results, show an improvement up to 10% of the final density when a thermal insulation was employed. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

Free