Microstructures and Mechanical Properties of Powder Metallurgy Pure Ti Composite Reinforced with Carbon Nanotubes

Threrujirapapong, Thotsaphon; Kondoh, Katsuyoshi; Imai, Hisashi; Umeda, Junko; Fugetsu, Bunshi

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タイトル	Microstructures and Mechanical Properties of Powder Metallurgy Pure Ti Composite Reinforced with Carbon Nanotubes
著者	Threrujirapapong, Thotsaphon Threrujirapapong, Thotsaphon
	Kondoh, Katsuyoshi Kondoh, Katsuyoshi
	Imai, Hisashi Imai, Hisashi
	Umeda, Junko Umeda, Junko
	Fugetsu, Bunshi Fugetsu, Bunshi
キーワード等	Pure Ti
	Carbon Nanotube
	Hot Extrusion
	TiC
抄録	Powder metallurgy (P/M) titanium matrix composite (TMC) reinforced with carbon nanotubes (CNTs) was prepared by spark plasma sintering (SPS) and a subsequent hot extrusion process. The un-bundled CNTs were coated on the pure titanium powder surface by the zwitterionic surfactant solution of the wet process. The microstructure and mechanical properties of P/M pure titanium materials and those reinforced with CNTs were evaluated. The microstructure and synthesized compound in solid-state sintering were investigated by optical and scanning electron microscopy equipped with an EDS analyzer. The mechanical properties of TMC were significantly improved by the addition of CNTs. For example, when employing fine pure titanium powder as raw material, P/M titanium extruded material with 0.37mass% showed excellent tensile properties such as 742 MPa UTS, 592 MPa YS and 26% elongation compared to P/M wrought titanium with no CNT having 585 MPa UTS, 423 MPa YS and 30% elongation. Fractured surfaces of tensile specimens were analyzed by scanning electron microscope, and revealed a uniform distribution of CNTs and TiC particles of the composite.
公開者	大阪大学接合科学研究所
公開者の別表記	Joining and Welding Research Institute, Osaka University
公開者 (ヨミ)	オオサカダイガクセツゴウカガクケンキュウジョ
掲載誌名	Transactions of JWRI
巻	37
号	1
開始ページ	57
終了ページ	61
刊行年月	2008-07
ISSN	03874508
NCID	AA00867058
URL	http://hdl.handle.net/11094/6033
言語	英語
カテゴリ	紀要論文 Departmental Bulletin Paper
カテゴリ	Transactions of JWRI / Vol.37 No.1 (2008-07)

著者版フラグ	publisher
NII資源タイプ	紀要論文
ローカル資源タイプ	紀要論文
dcmi資源タイプ	text
DCTERMS.bibliographicCitation	Transactions of JWRI.37(1) P.57-P.61
DC.title	Microstructures and Mechanical Properties of Powder Metallurgy Pure Ti Composite Reinforced with Carbon Nanotubes
DC.creator	Threrujirapapong, Thotsaphon
	Kondoh, Katsuyoshi
	Imai, Hisashi
	Umeda, Junko
	Fugetsu, Bunshi
DC.publisher	大阪大学接合科学研究所
DC.language" scheme="DCTERMS.RFC1766	英語
DCTERMS.issued" scheme="DCTERMS.W3CDTF	2008-07
DC.identifier" scheme="DCTERMS.URI	http://hdl.handle.net/11094/6033
DC.subject	Pure Ti
	Carbon Nanotube
	Hot Extrusion
	TiC
DCTERMS.abstract	Powder metallurgy (P/M) titanium matrix composite (TMC) reinforced with carbon nanotubes (CNTs) was prepared by spark plasma sintering (SPS) and a subsequent hot extrusion process. The un-bundled CNTs were coated on the pure titanium powder surface by the zwitterionic surfactant solution of the wet process. The microstructure and mechanical properties of P/M pure titanium materials and those reinforced with CNTs were evaluated. The microstructure and synthesized compound in solid-state sintering were investigated by optical and scanning electron microscopy equipped with an EDS analyzer. The mechanical properties of TMC were significantly improved by the addition of CNTs. For example, when employing fine pure titanium powder as raw material, P/M titanium extruded material with 0.37mass% showed excellent tensile properties such as 742 MPa UTS, 592 MPa YS and 26% elongation compared to P/M wrought titanium with no CNT having 585 MPa UTS, 423 MPa YS and 30% elongation. Fractured surfaces of tensile specimens were analyzed by scanning electron microscope, and revealed a uniform distribution of CNTs and TiC particles of the composite.
citation_title	Microstructures and Mechanical Properties of Powder Metallurgy Pure Ti Composite Reinforced with Carbon Nanotubes
citation_author	Threrujirapapong, Thotsaphon
	Kondoh, Katsuyoshi
	Imai, Hisashi
	Umeda, Junko
	Fugetsu, Bunshi
citation_publisher	大阪大学接合科学研究所
citation_language	英語
citation_date	2008-07
citation_journal_title	Transactions of JWRI
citation_volume	37
citation_issue	1
citation_firstpage	57
citation_lastpage	61
citation_issn	03874508
citation_public_url	http://hdl.handle.net/11094/6033
citation_keywords	Pure Ti
	Carbon Nanotube
	Hot Extrusion
	TiC

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