凝縮プラズマ系下の金属-超軽元素化合物生成機構の基礎的解明

凝聚等离子体体系中金属-超轻元素化合物形成机制的基本阐明

• 批准号: 12450293
• 负责人: TOMII Yoichi
• 金额: $ 0.96万
• 依托单位: KYOTO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-12450293/
• 关键词: condensed plasma reaction; non-equilibrium material; Al-Ti-C complex carbide; molten metal-CH_4reaction; thick film; ultra small size of particle; Thermal stability; environmental stability; 凝縮プラズマ; ラディカル種ないしはイオン種; プラズマ; 窒化物; 水素; 傾斜組成; TiN /

Two small experimental research projects based on previous results in last year were conducted progressively. Obtained main results are as follows.1. High performance and micro characterization of newly synthesized thick film formed by condensed plasma reaction. Though the compounds such as AlTi and AI_3Ti are easy formed at high temperature in Al-Ti system, it is difficult to disperse small size of these compound particle into matrix for strengthening the materials due to easy growth of these compounds crystal. Formation and dispersion of complex carbide compounds in Al-Ti-C system has tried by means of condensed plasma reaction with CH_4 gas at high temperature up to 1400℃. Thick (^omm) and high performance (mHv^o500) film was formed after the plasma reaction. By using XRD and EPMA analysis,the origin of this high performance has attributed to a new formation of complex carbide compounds including TiC with ultra small size of particle.2. Thermodynamic and environmental stability of newly synthesized thick film in non-equilibrium plasma reaction. Thermal and environmental stability of this newly synthesized thick film has examined. By including of Ti atom into Al-C compound under plasma reaction with CH_4 gas, both stability have improved much more than those without Ti. These progress in both stability were also thought to be attributed to a new formation of complex compounds including TiC with ultra small size of particle.The future trends for applying this newly synthesized thick film to industrial use have pointed out follows. (1) Determination of crystal structure for this firm should be conducted by transmission electron microscope (2) Establishment of completely uniform dispersion method of this high performance materials into aluminum matrix with ultra small size of particle.On this two residual points, theoretical and experimental approach will be continued.

根据去年先前的结果进行了两个小型的实验研究项目。获得的主要结果如下1。由凝结的血浆反应形成的新合成厚膜的高性能和微观表征。尽管诸如Alti和AI_3TI之类的化合物在AL-TI系统的高温下很容易形成，但由于这些化合物晶体的易于生长，因此很难将这些化合物颗粒的小尺寸分散到矩阵中，以增强材料。 AL-TI-C系统中复杂碳化物化合物的形成和分散通过在高温下的高温下与CH_4气体的凝结等离子体反应进行了尝试。血浆反应后形成了厚（^oum）和高性能（MHV^o500）膜。通过使用XRD和EPMA分析，这种高性能的起源归因于复杂的碳化物化合物的新形成，包括带有极小粒子的TIC。2。非平衡血浆反应中新合成厚膜的热力学和环境稳定性。该新合成的厚膜的热和环境稳定性已经检查。通过在与CH_4气体的血浆反应下将Ti原子纳入Al-C化合物，这两种稳定性的提高远大于没有Ti的稳定性。两种稳定性中的这些进展也被认为归因于复杂化合物的新形成，包括具有极小粒子的TIC。将这种新合成的厚膜应用于工业用途的未来趋势已指出。 （1）应通过透射电子显微镜（2）将这种高性能材料的完全均匀分散法的晶体结构测定到具有极小粒子的铝基质中。在这两个残留点，理论和实验方法将继续进行。