Nanocomposite Prepared from Carbon Nanotubes and Hydroxyapatite Precursors
Nanocomposite Prepared from Carbon Nanotubes and Hydroxyapatite Precursors
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DOI：
10.11344/nano.1.137
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发表时间：
2009-12
期刊：
影响因子：
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通讯作者：
Mamorn Omori;Tafcashi Watanabe;Masa‐aki Tanaka;A. Okubo;Hisainichi Kimura;T. Hashida
中科院分区：
文献类型：
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作者：
Mamorn Omori;Tafcashi Watanabe;Masa‐aki Tanaka;A. Okubo;Hisainichi Kimura;T. Hashida
将多壁碳纳米管(MWNT)与CaHPO4·H2O和Ca(OH) 2 的羟基磷灰石(HA)前驱体在水浆中混合，并通过放电等离子烧结(SPS)在1200℃、120MPa下进行烧结。 MWNT 以长度小于 50 μm、宽度小于 5 μm 的团聚物形式分散在复合材料中，由 MWNT 和小于 100 nm 的氧化铝纳米晶体组成。随着MWNT含量的增加，堆积密度和维氏硬度降低。通过添加MWNT，复合材料的强度得到了提高。在团聚体的断裂表面观察到拉出的 MWNT，有助于增强复合材料。
Multi-walled carbon nanotubes (MWNTs) and the hydroxyapatite (HA) precursor of CaHPO4· H2O and Ca (OH) 2 were mixed in water slurry and sintered at 1200oC at 120 MPa by spark plasma sintering (SPS). MWNTs were dispersed in the composite as agglomerates less than 50 μm in length and 5 μm in width, consisting of MWNTs and alumina nanocrystals smaller than 100 nm. The bulk density and Vickers hardness were decreased with increasing content of MWNTs. The strength of the composite was improved by the addition of MWNTs. Pull-out MWNTs were observed on the fracture surface of the agglomerate and contributed to strengthen the composite.