2;原位;定標(biāo)曲線;性能"/> 2復(fù)合材料。詳細(xì)討論了Cu-Ti-B體系的反應(yīng)過(guò)程。通過(guò)XRD、SEM、EDS、XPS等手段,確定了Ti和B在Cu基體中原位合成了TiB2,并利用XRD制作TiB2和Cu的定標(biāo)曲線,采用外標(biāo)法計(jì)算出不同燒結(jié)溫度下TiB2的合成率,結(jié)果表明,在一定的溫度范圍內(nèi),溫度越高,合成率越高,在1000℃時(shí)TiB2的合成率可達(dá)99.27%。并測(cè)試Cu-1.5 wt%TiB2塊狀試樣的維氏硬度,電導(dǎo)率和三點(diǎn)彎曲強(qiáng)度,分別為125.68 MPa、80.1% IACS和755.2 MPa,在100℃時(shí)的熱膨脹系數(shù)和導(dǎo)熱系數(shù)分別為9.3×10-6 /K和260 W/mK。"/>

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原位合成TiB2的定量計(jì)算及Cu-TiB2復(fù)合材料性能的研究
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合肥工業(yè)大學(xué)材料科學(xué)與工程學(xué)院,合肥工業(yè)大學(xué)材料科學(xué)與工程學(xué)院,合肥工業(yè)大學(xué)材料科學(xué)與工程學(xué)院,合肥工業(yè)大學(xué)材料科學(xué)與工程學(xué)院,,

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Quantitative analysis of TiB2 particles and properties ofCu- TiB2 composite prepared by in situ reaction
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School of Materials Science and Engineering,Hefei University of Technology,School of Materials Science and Engineering,Hefei University of Technology,School of Materials Science and Engineering,Hefei University of Technology,School of Materials Science and Engineering,Hefei University of Technology,Department of Material Engineering,Zhejiang Industry Trade Vocational College,Wen Zhou,Department of Material Engineering,Zhejiang Industry Trade Vocational College,Wen Zhou

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    摘要:

    以Ti粉、B粉和Cu粉為原材料,球磨后,采用原位熱壓法合成Cu-15wt%TiB2復(fù)合材料。詳細(xì)討論了Cu-Ti-B體系的反應(yīng)過(guò)程。通過(guò)XRD、SEM、EDS、XPS等手段,確定了Ti和B在Cu基體中原位合成了TiB2,并利用XRD制作TiB2和Cu的定標(biāo)曲線,采用外標(biāo)法計(jì)算出不同燒結(jié)溫度下TiB2的合成率,結(jié)果表明,在一定的溫度范圍內(nèi),溫度越高,合成率越高,在1000℃時(shí)TiB2的合成率可達(dá)99.27%。并測(cè)試Cu-1.5 wt%TiB2塊狀試樣的維氏硬度,電導(dǎo)率和三點(diǎn)彎曲強(qiáng)度,分別為125.68 MPa、80.1% IACS和755.2 MPa,在100℃時(shí)的熱膨脹系數(shù)和導(dǎo)熱系數(shù)分別為9.3×10-6 /K和260 W/mK。

    Abstract:

    Cu-TiB2 composites were prepared by combining in situ reaction and hot-pressing under different temperatures after ball-milling of the mixture powders of Cu, Ti and B. The reaction process of Cu-Ti-B system is discussed in detail. By means of XRD, SEM, EDS and XPS, it was determined that TiB2 nano-particles generated by in situ reaction in Cu-matrix. According to making the calibration curve of TiB2 and Cu by XRD, the concrete synthesis rate of TiB2 in Cu-matrix under different sintering temperature by external standard method was confirmed. The experiments show that under certain temperature range, the higher the temperature is, the higher synthesis rate is, and the best synthesis rate of TiB2 is 99.27% at 1000℃. Cu-1.5wt%TiB2 prepared at 1000℃had the best properties, Vickers hardness(HV), electric conductivity(EC), flexure strength(FS), thermal expansivity(TE) and thermal conductivity(TC) at 100℃ were 125.68MPa, 80.1 % IACS, 755.2 MPa, 9.3×10-6 / K and 260 W/mK, respectively.

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夏夢(mèng),鳳儀,田沛,宋炤坤,趙嵐,蔡承宇.原位合成TiB2的定量計(jì)算及Cu-TiB2復(fù)合材料性能的研究[J].稀有金屬材料與工程,2017,46(11):3260~3266.[Xia Meng, Feng Yi, Tian Pei, Song Zhaokun, Zhao Lan, Cai Chengyu. Quantitative analysis of TiB2 particles and properties ofCu- TiB2 composite prepared by in situ reaction[J]. Rare Metal Materials and Engineering,2017,46(11):3260~3266.]
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  • 收稿日期:2016-09-09
  • 最后修改日期:2016-11-08
  • 錄用日期:2016-12-07
  • 在線發(fā)布日期: 2017-12-13
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