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首页> 外文会议>International Ceramics Congress >Influence of B4C, SiC and Si3N4 additions on microstructures and selected properties of titanium nitride matrix materials obtained by HPHT method'
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Influence of B4C, SiC and Si3N4 additions on microstructures and selected properties of titanium nitride matrix materials obtained by HPHT method'

机译：B4C，SiC和Si3N4对HPHT方法获得的微观结构和选定性能的影响和选择性能“

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The paper presents the results of the High Pressure and High Temperature (HP-HT) sintering and investigation of Ultra High Temperature Ceramics (UHTC) composites of titanium nitride matrix. The aim of this studies were to determine the influence of additives on the ceramic phase composition, microstructure and selected properties. Three different kind of mixtures were prepared. 8 to 22 wt% B4C, SiC and Si3N4 were added. Composites were sintered under high-pressure high-temperature conditions (HP-HT) using a Bridgman-type apparatus under pressure about 6 GPa. Materials were sintered at the range of 1450 to 1690 ° C, duration of sintering was 60s. The phase composition, microstructure, and the apparent density, Young's modulus, hardness and fracture toughness KIC (HV), using the Vickers indentation method were examined. Sintered titanium nitride with the 22 wt% silicon carbide participation was characterized the best physical and mechanical properties. For this material the relative density is 99%, the Young's modulus 435 GPa, Vickers hardness 18.3 GPa HV1 and fracture toughness 5.5 MPa·m.
机译：本文介绍了高压和高温（HP-HT）烧结和对氮化钛基质的超高温陶瓷（UHTC）复合材料的高压和高温（HP-HT）烧结的结果。本研究的目的是确定添加剂对陶瓷相组合物，微观结构和选定性质的影响。制备了三种不同种类的混合物。加入8至22wt％B4C，SiC和Si3N4。在高压高温条件（HP-HT）下使用大约6GPa的压力烧结复合材料。材料在1450至1690℃的范围内烧结，烧结持续时间为60秒。研究了使用维氏缩进方法的相相组合物，微观结构和表观密度，杨氏模量，硬度和断裂韧性KIC（HV）。具有22wt％碳化硅参与的烧结氮化钛是具有最佳的物理和机械性能。对于这种材料，相对密度为99％，杨氏模量435 GPA，维氏硬度18.3 GPA HV1和断裂韧性5.5MPa·m。

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