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Development of Equipment Generating Ultra-fine particle for Functionally Gradient Materials.

Development of Equipment Generating Ultra-fine particle for Functionally Gradient Materials.
功能梯度材料超细颗粒生成设备的开发。
批准号:
02453110
负责人:
HONDA Takuya
金额:
$4.42万
依托单位国家:
日本
项目类别:
Grant-in-Aid for General Scientific Research (B)
财政年份:
1990
资助国家:
日本
项目状态:
已结题
起止时间:
1990 至 1991

项目摘要

项目成果

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中文摘要
翻译
1990年,两项研究建立了超细颗粒(UFP)的形成。一种是在直流电弧放电的阳极上处理金属(Ti,Al)基底形成UFP。在两种情况下的产品和条件的形成进行了研究,添加氮气或氢气作为反应气体的等离子体支持氩气。二是射频氩等离子体和铝粉系统,它与氩等离子体气体中加入的氧气反应。这是用类似于液滴燃烧的模型进行的数值计算。用我们的方法发展功能梯度材料(FGM)存在两个主要问题:UFP的产率低和成分梯度平滑。在1991年,这些主要是关于铝粒子和氩/氧射频等离子体流系统的研究。前者是通过对流场的数值解和超细颗粒的贴壁估算来推测的,并采用了反应管设计以提高产率。此外,当使用氧气作为鞘气时,鞘气沿着反应管壁流动,并且获得高产率。后者,特别是金属与陶瓷的比率(这里,铝与氧化铝)通过调节向等离子体和/或鞘气中添加的氧的流速来解决。生产的氧化铝有α,γ,δ,rheta-氧化铝。在大多数情况下,这些成分相当稳定。这一施工控制问题仍有待于进一步解决。
英文摘要
In 1990, two studies were constructed for formation of ultra-fine particle (UFP). One was the formation of UFP with treatment of metal (Ti, AI) substrate on the anode of a dc arc discharge. The products and conditions of the formation were studied in two cases adding nitrogen or hydrogen as a reactive gas to the plasma supporting argon gas. Two was rf argon plasma and al-uminum powder system which reacts with oxygen added to the argon plasma gas. This was carried out numerically with the model similar to a combustion of liquid droplet.There are two major problems in the development of functionally gradient material (FGM) with our method ; low yield of UFP and smooth gradient of composition. In 1991, these were mostly examined about the system of aluminum particle and argon/oxygen rf plasma flow. The former was speculated by numerical solution about the flow fields and estimation of ultra-fine particle sticking to wall, and a reaction tube design was adopted for a high yield. Moreover, a sheath gas flew along the reaction tube wall and got a high yield when oxygen gas was used as a sheath gas. The latter, particularly metal to ceramics ratio (here, aluminum to alumina) was solved by adjustment of the flow rate of oxygen addition to the plasma and/or sheath gases. Produced alumina were alpha, gamma, delta, rheta-alumina. These composition was fairly constant in the most cases. This construction control still remain to be solved in future.
期刊论文(40)
专著(0)
科研奖励(0)
会议论文
Takayuki WATANABE, Takuya HONDA, and Atsushi KANAZAWA: " "Characteristics in RF Induced Plasmas Added with Variout Reactive Gas"" J. of High Temp. Soc.17(2). 71-81 (1991)
Takayuki WATANABE、Takuy​​a HONDA 和 Atsushi KANAZAWA:“添加了 Variout 反应气体的射频感应等离子体的特性”J. of High Temp。
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通讯作者:
Takayuki WATANABE, Ikuo KURIBAYASHI, Takuya HONDA, and Atsushi KANZAWA: " "Deformation and Solidification of a Droplet on a Cold Substrate"" Chem. Eng. Sci.47. (1992)
Takayuki WATANABE、Ikuo KURIBAYASHI、Takuy​​a HONDA 和 Atsushi KANZAWA:““冷基板上液滴的变形和凝固””Chem。
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渡辺 隆行: "各種の反応性気体を混入した高周波誘導熱プラズマの特性" 高温学会誌. 17. 71-81 (1991)
Takayuki Watanabe:“高频感应热等离子体与各种反应气体混合的特性”《高温科学学会杂志》17. 71-81 (1991)。
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Takayuki WATANABE,Takuya HONDA,Atsushi KANZAWA: "Nonequilibrium of Dissociation and Recombination in R.F.Thermal Plasmas with Diatomic Gas" Proceedings of JapanーChinaーKorea Trilateral Symposium on Plasma Chemistry. 1. 83-86 (1990)
Takayuki WATANABE、Takuy​​a HONDA、Atsushi KANZAWA:“R.F.热等离子体中双原子气体的解离和重组的非平衡”日中韩等离子体化学三边研讨会论文集 1. 83-86 (1990)。
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    • 批准号:
      --
    • 项目类别:
      --
    • 资助金额:
      40万元
    • 批准年份:
      2020
    • 负责人:
      Abolfazl Bayat
    • 依托单位: