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Characteristics of powder metallurgy pure titanium matrix composite reinforced with multi-wall carbon nanotubes
Title: | Characteristics of powder metallurgy pure titanium matrix composite reinforced with multi-wall carbon nanotubes |
Authors: | Kondoh, Katsuyoshi Browse this author | Threrujirapapong, Thotsaphon Browse this author | Imai, Hisashi Browse this author | Umeda, Junko Browse this author | Fugetsu, Bunshi Browse this author |
Keywords: | Ti powder | Carbon nanotubes | Spark plasma sintering | Extrusion | TiC | Metal-matrix composites (MMCs) | Stress/strain curves | X-ray diffraction (XRD) | Sintering |
Issue Date: | Jun-2009 |
Publisher: | Elsevier Ltd. |
Journal Title: | Composites Science and Technology |
Volume: | 69 |
Issue: | 7-8 |
Start Page: | 1077 |
End Page: | 1081 |
Publisher DOI: | 10.1016/j.compscitech.2009.01.026 |
Abstract: | By using pure titanium powder coated with un-bundled multi-wall carbon nanotubes (MWCNTs) via wet process, powder metallurgy (P/M) titanium matrix composite (TMC) reinforced with the CNTs was prepared by spark plasma sintering (SPS) and subsequently hot extrusion process. The microstructure and mechanical properties of P/M pure titanium and reinforced with CNTs were evaluated. The distribution of CNTs and in-situ formed titanium carbide (TiC) compounds during sintering was investigated by optical and scanning electron microscopy (SEM) equipped with EDS analyzer. The mechanical properties of TMC were significantly improved by the additive of CNTs. For example, when employing the pure titanium composite powder coated with CNTs of 0.35 mass%, the increase of tensile strength and yield stress of the extruded TMC was 157 MPa and 169 MPa, respectively, compared to those of extruded titanium materials with no CNT additive. Fractured surfaces of tensile specimens were analyzed by SEM, and the uniform distribution of CNTs and TiC particles, being effective for the dispersion strengthening, at the surface of the TMC were obviously observed. |
Type: | article (author version) |
URI: | http://hdl.handle.net/2115/38627 |
Appears in Collections: | 環境科学院・地球環境科学研究院 (Graduate School of Environmental Science / Faculty of Environmental Earth Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 古月 文志
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