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    徐磊. 爆炸成型法制备碳化钽陶瓷[J]. 机械工程材料, 2010, 34(9): 57-59.
    引用本文: 徐磊. 爆炸成型法制备碳化钽陶瓷[J]. 机械工程材料, 2010, 34(9): 57-59.
    shu
    XU Lei. Preparation of Tantalum Carbide Ceramics by Explosion Forming Technology[J]. Materials and Mechanical Engineering, 2010, 34(9): 57-59.
    Citation: XU Lei. Preparation of Tantalum Carbide Ceramics by Explosion Forming Technology[J]. Materials and Mechanical Engineering, 2010, 34(9): 57-59.
    shu

    爆炸成型法制备碳化钽陶瓷

    Preparation of Tantalum Carbide Ceramics by Explosion Forming Technology

      摘要
    • 摘要: 为提高碳化钽陶瓷的性能,采用微米碳化钽粉为原料,填充进双层钢管容器内,埋入铵油炸药,通过爆炸成型法制备碳化钽陶瓷,并对其组织与性能进行了分析.结果表明:爆炸成型后试样下部区域硬度可达14.5 GPa,但存在裂纹,中部区域硬度为4.8 MPa;成型后碳化钽晶格残余应变为2.4×10-3,爆炸冲击波在粉体颗粒中储备的内能为0.46 J·g-1,额外的内能和颗粒内部的位错群使得爆炸成型后的碳化钽更容易进行低温烧结,烧结后中部区域硬度提高到11 GPa.

       

      Abstract: In order to improve mechanical properties of tantalum carbide (TaC) ceramics,TaC powders with nanometer size which were used as raw materials were packed in double-tube steel vessels and subjected to ammonium nitrate fuel oil(ANFO) explosive,then TaC ceramics were prepared by explosion forming technology.The microstructure and properties of the ceramics were analyzed.The results show that after forming,the hardness of 14.5 GPa could be obtained at the lower part of the sample with cracks,and 4.8 MPa in the central region.The lattice residual strain in TaC introduced by the explosion was 2.4×10-3.The explosion shock wave stored 0.46 J·g-1 internal energy inside the powders.The extra internal energy and the dislocation group in the particles made it possible for the shocked material to be sintered at lower temperatures.The hardness of the sintered sample in the central region could improve to 11 GPa.

       

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