Fabrication of thermoelectric materials with low dimensional quantum nanostructure

2017 Fiscal Year Final Research Report

• Project/Area Number: 16K14399
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Composite materials/Surface and interface engineering
• Research Institution: Ibaraki University
• Principal Investigator: Ikeda Teruyuki 茨城大学, 工学部, 教授 (40314421)
• Co-Investigator(Kenkyū-buntansha): 篠嶋 妥 茨城大学, 工学部, 教授 (80187137) ; 小峰 啓史 茨城大学, 工学部, 准教授 (90361287) ; 鵜殿 治彦 茨城大学, 工学部, 助教授 (10282279)
• Project Period (FY): 2016-04-01 – 2018-03-31
• Keywords: 熱電特性 / セル構造 / ボールミル

Outline of Final Research Achievements

We performed two types of experiments to prepare thermoelectric material with 3 dimensional cellular structure where conductive electrons are confined in a 2 dimensional space. One route is to sinter the powder sample prepared by high-energy ball milling Si-Al2O3 mixture. Another one is to sinter the powder sample prepared by mixing boehmite nanofiber prepared by oxidization of aluminum nanoparticles and silicon. As results, Si-Al2O3 nanocomposite structure was observed in both samples. In case of solid state precipitation of Si in Mg2Si, precipitates were found to take plate shapes under eigen strain.

Free Research Field

材料物性