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首页> 外文期刊>Journal of Materials Research >Boron nitride nanotube reinforced titanium metal matrix composites with excellent high-temperature performance
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Boron nitride nanotube reinforced titanium metal matrix composites with excellent high-temperature performance

机译：具有优异高温性能的氮化硼纳米管增强钛金属基复合材料

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摘要

Boron nitride nanotube (BNNT) reinforced titanium (Ti) matrix composites were prepared using the cold press-and-sinter method. In the composite sintered at 800 ℃ for 1 h, BNNTs were homogeneously distributed in the Ti matrix and restricted the growth of Ti grains. The compressive strength of the as-sintered Ti-4 vol% BNNT composite achieved 985 MPa at room temperature versus 678 MPa without the BNNT reinforcements. The highest compressive strength of 277 MPa at 500 ℃ was obtained from the Ti-5 vol% BNNT composite. When sintered at 1000 ℃, chemical reactions occurred between Ti and BNNTs leading to the formation of the interfacial TiB phase, which serves as a strong binding between BNNTs and the Ti matrix. The reinforcements were attributed by a mixture of BNNTs and TiB after sintering at 1000 ℃ for 3 h. However, no BNNT was observed in the microstructure after sintering at 1100 ℃ for 3 h due to complete transformation into TiB whiskers.
机译：采用冷压烧结法制备了氮化硼纳米管（BNNT）增强钛（Ti）基复合材料。在800℃烧结1 h的复合材料中，BNNTs均匀分布在Ti基体中，限制了Ti晶粒的生长。烧结后的Ti-4 vol％BNNT复合材料的抗压强度在室温下达到985 MPa，而在没有BNNT增强材料的情况下达到678 MPa。 Ti-5 vol％BNNT复合材料在500℃时的最高抗压强度为277 MPa。当在1000℃下烧结时，Ti和BNNT之间发生化学反应，导致形成界面TiB相，这是BNNT与Ti基体之间的牢固结合。在1000℃烧结3 h后，BNNTs和TiB的混合物引起了增强。然而，由于完全转变成TiB晶须，在1100℃烧结3小时后，在显微组织中没有观察到BNNT。

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  • 来源
    《Journal of Materials Research》 |2017年第19期|3744-3752|共9页
  • 作者

    Md Mahedi Hasan Bhuiyan; Jiangting Wang; Lu Hua Li; Peter Hodgson; Ma Qian; Ying Chen;

  • 作者单位

    Institute for Frontier Materials, Deakin University, Waurn Ponds, VIC 3216, Australia Arvind Agarwal Advanced Materials Engineering Research Institute (AMERI), Florida International University, Miami, Florida 33174, USA;

    Institute for Frontier Materials, Deakin University, Waurn Ponds, VIC 3216, Australia Arvind Agarwal Advanced Materials Engineering Research Institute (AMERI), Florida International University, Miami, Florida 33174, USA;

    Institute for Frontier Materials, Deakin University, Waurn Ponds, VIC 3216, Australia Arvind Agarwal Advanced Materials Engineering Research Institute (AMERI), Florida International University, Miami, Florida 33174, USA;

    Institute for Frontier Materials, Deakin University, Waurn Ponds, VIC 3216, Australia Arvind Agarwal Advanced Materials Engineering Research Institute (AMERI), Florida International University, Miami, Florida 33174, USA;

    Centre for Additive Manufacturing, School of Engineering, RMIT University, Melbourne VIC 3000, Australia;

    Institute for Frontier Materials, Deakin University, Waurn Ponds, VIC 3216, Australia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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