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首页> 外文期刊>Journal of Materials Research >Processing, mechanical properties and oxidation behavior of TaC and HfC composites containing 15 vol% TaSi_2 or MoSi_2
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Processing, mechanical properties and oxidation behavior of TaC and HfC composites containing 15 vol% TaSi_2 or MoSi_2

机译：含15％（体积）TaSi_2或MoSi_2的TaC和HfC复合材料的加工，力学性能和氧化行为

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摘要

Fully dense HfC and TaC-based composites containing 15 vol% TaSi_2 or MoSi_2 were produced by hot pressing at 1750-1900 ℃. TaSi_2 enhanced the sinterability of the composites and nearly fully dense materials were obtained at lower temperatures than in the case of MoSi_2-containing ones. The TaC-based composites performed better than HfC composites at room temperature, showing values of mechanical strength up to 900 MPa and a fracture toughness of 4.7 MPa·m~(1/2). However, preliminary oxidation tests carried out in air at 1600 ℃ revealed that HfC-based composites have a superior high temperature stability compared to TaC-based materials.
机译：通过在1750-1900℃下热压，制备出含有15vol％TaSi_2或MoSi_2的完全致密的HfC和TaC基复合材料。 TaSi_2增强了复合材料的烧结性，并且在比含MoSi_2的情况下更低的温度下获得了几乎完全致密的材料。 TaC基复合材料在室温下的性能优于HfC复合材料，其机械强度值高达900 MPa，断裂韧性为4.7 MPa·m〜（1/2）。然而，在1600℃的空气中进行的初步氧化测试表明，与TaC基材料相比，HfC基复合材料具有优异的高温稳定性。

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  • 来源
    《Journal of Materials Research》 |2009年第6期|2056-2065|共10页
  • 作者

    Diletta Sciti; Laura Silvestroni; Stefano Guicciardi; Daniele Dalle Fabbriche; Alida Bellosi;

  • 作者单位

    CNR-1STEC, Institute of Science and Technology for Ceramics, I-48018 Faenza, Italy;

    CNR-1STEC, Institute of Science and Technology for Ceramics, I-48018 Faenza, Italy;

    CNR-1STEC, Institute of Science and Technology for Ceramics, I-48018 Faenza, Italy;

    CNR-1STEC, Institute of Science and Technology for Ceramics, I-48018 Faenza, Italy;

    CNR-1STEC, Institute of Science and Technology for Ceramics, I-48018 Faenza, Italy;

  • 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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