carbon nanostructure composites 透明異方性セラミックスの …carbon nanostructure...
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Carbon nanostructure compositesKeywords: Carbon nanotubes, graphene, structural/functional composites
Mehdi EstiliFunctional Powder and Advanced Ceramics Field / Ceramics Processing [email protected] | https://samurai.nims.go.jp/profiles/estili_mehdi
Carbon nanostructures such as CNTs and graphene possess extraordinary mechanical and transport properties. They could be used as a reinforcement to realize novel structural/functional composites for various applications. However, their uniform dispersion within matrix materials is a great challenge.
We aim to fabricate and characterize well-dispersed carbon nanostructure–reinforced composite materials with different matrixes (ceramics, metals, polymers), by using colloidal processing and spark plasma sintering.
Processing of novel well-dispersed carbon nanostructure–reinforced composites for structural functional applications
Studying the direct reinforcing mechanism of carbon nanostructures in the composites
Multifunctional CNT-concentrated composites Functionally graded carbon nanostructure
composites Strain tolerant, thermal-shock resistant ceramic
composites
・M. Estili et al., Advanced Materials (2012), 24, 4322・M. Estili and Y. Sakka., Sci. Tech. Adv. Mater. (2014), 15, 064902・M. Estili and A. Khademhosseini et al., Nanoscale (2015), 7, 6436
Introducing a processing method to fabricate well-dispersed CNT–ceramic matrix composites
Simultaneously tough, strong and strain-tolerant CNT-concentrated alumina composites with record-breaking
electrical conductivities (~5,000 S/m)
Processing of biocompatible graphene–hydrogel composites with improved properties for biomedical
applications, using water-dispersible graphene
Processing of well-dispersed, aligned CNT–aluminum matrix composites
with improved strength and maintained ductility
透明異方性セラミックスの開発
顔写真
異⽅性アパタイトを低温焼結(850˚C)→ 組織微細化による透明度向上
Keywords: アルミナ、アパタイト、微細組織、通電加圧焼結
機能性粉体・セラミックス分野 外場制御焼結グループ
金 炳男[email protected] | http://www.nims.go.jp/research/group/field-assisted-sintering
レーザーなどの光学材料としては立方晶セラミックスが使われており、複屈折性を示す異方性セラ
ミックスは透明化が難しく、ほとんど使われていない。優れた光学特性を示す異方性単結晶を対象
として、その多結晶セラミックスの透明化を図る。
透明アルミナ、透明アパタイトの低温焼結による組織微細化
成形モールド、通電方式、加熱スケジュールの制御による通電焼結手法の改良・開発
レーザー用新規異方性セラミックスの開発
・“Dynamic grain growth during low-temperature spark plasma sintering of alumina” Scripta Mater. 80(2014) 29.
・“Low-temperature spark plasma sintering of alumina by using SiC molding set” J. Ceram. Soc. Jpn. 124(2016) 1141.
・“Spark plasma sintering of highly transparent hydroxyapatite ceramics” J. Jpn. Soc. Powder Metall. 64(2017) 547.
新規導電性SiCモールドを用いた低温焼結
高透明アパタイトセラミックスの焼結
低温（動的）粒成長挙動の機構解明
希土類添加透明アパタイトセラミックスの開発
焼結組織の微細・均質化手法の開発
新規異⽅性レーザーセラミックス
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機能性材料