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鋁熱法制備TiC/TiB2-FeNiCr復(fù)合材料
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國(guó)家自然科學(xué)基金資助項(xiàng)目（51072011）


TiC/TiB2-FeNiCr Composite Prepared by Thermite Reaction
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    摘要:

    采用鋁熱法原位合成出了含TiC顆粒、TiC-TiB2復(fù)相陶瓷顆粒增強(qiáng)相體積分?jǐn)?shù)較高的TiC/TiB2-FeNiCr復(fù)合材料。利用電子探針分析（EPMA）儀、掃描電鏡（SEM）、透射電鏡（TEM）和X射線衍射（XRD）儀等手段研究了該復(fù)合材料的顯微組織和相結(jié)構(gòu)，同時(shí)利用顯微硬度儀測(cè)量了該復(fù)合材料的硬度，利用摩擦磨損試驗(yàn)機(jī)測(cè)量復(fù)合材料的耐磨性能。結(jié)果表明，TiC/TiB2-FeNiCr復(fù)合材料由TiC顆粒、TiC和TiB2復(fù)相陶瓷顆粒、針狀Cr7C3相，NiAl相和α-FeNiCr合金基體相組成。復(fù)合材料的硬度（HV）為13132.5 MPa。復(fù)合材料施加載荷20 N，磨損1 h后的失重為4.2 mg；而45#鋼在相同條件下的失重量為13 mg，是復(fù)合材料的3倍。

    Abstract:

    TiC/TiB2-FeNiCr composites enhanced by TiC particles and TiC-TiB2 multiphase particles were in-situ synthesized by thermite reaction. The microstructure and phase structure were investigated by electron probe microanalysis (EPMA), scanning electron microscopy (SEM), transmission electron microscope (TEM) and X-ray diffraction (XRD). The hardness and wear resistance were tested by the Vickers indentation method and friction-wear testers, respectively. Results show that the TiC/TiB2-FeNiCr composites are composed of TiC, TiC-TiB2 multiphase particles, Cr7C3, NiAl and α-FeNiCr. The Vickers hardness of composites is 13132.5 MPa. The composite mass wear loss is 4.2 mg after wearing for 1 h with 20 N force and that is nearly one third of the mass loss of 0.45C% steel.

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劉 洋,席文君,丁澤華,李文靜,李曉鯤,李樹杰.鋁熱法制備TiC/TiB2-FeNiCr復(fù)合材料[J].稀有金屬材料與工程,2015,44(3):688~691.[Liu Yang, Xi Wenjun, Ding Zehua, Li Wenjing, Li Xiaokun, Li Shujie. TiC/TiB2-FeNiCr Composite Prepared by Thermite Reaction[J]. Rare Metal Materials and Engineering,2015,44(3):688~691.]
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  • 收稿日期:2014-03-16
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  • 在線發(fā)布日期: 2015-05-29
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