Electrochemical-and Spectroscopic-Fundamental Study on Condensed Plasma System

本项目取得的主要成果如下。该项目的另一项成果是出版了一本名为《等离子体与离子》的期刊。由于“凝聚等离子体”反应在概念上的重要性，它首先由本项目的首席研究员提出，并在本项目中成核和构建，并在1998年9月在日本举行的国际会议(Kokura)和中国会议上得到了极好的评价。(1998年10月在西安)2.发现了金属钛电极上N~+和NO_3~-离子的氧化和还原都能合成锡化合物的新事实。这些凝聚等离子体反应的结果可用于合成其他各种金属氮化物，如FeNx。3.ZrN.WN.NbN。通过XPS和Ramman光谱分析，在第二级化合物表面覆盖了能够保护块状氟砷酸石墨不受空气中水分侵蚀的平板型氟化石墨。那是…电化学测试结果表明，Pd-Li合金的吸氢量大于金属Pd。对直流放电电解法进行了改进，使其电路稳定，可生产出金属微粉，有望成为金属粉末生产的一种新方法。用直流ARCC等离子体射流制备了100-200微米厚的氮化物化合物膜。X-射线微区衍射图和扫描电子显微镜观察到表面有3种不同的相，其厚度强烈地依赖于等离子体气体的N_2/H_2比。从300-800微米波长的等离子体火焰光谱可以看出，NH自由基和H自由基物种在合成反应中起着重要的作用。利用JAMIC的落轴装置研究了重力对凝聚等离子体反应中沉积金属形貌的影响。通过比较重力和无重力条件下电沉积微晶的扫描电子显微镜图像，发现重力对金属沉积中的形核或生长速度有一定的影响。较少

The main results obtained by this project are as follows. And also one of another fruits of this project was a publication of journal named "Plasmas & Ions". It has been introduced due to the importance in the conception as the "Condensed Plasma" reaction which was firstly proposed by the head investigator in this project, was nucleated and constructed in this project and has been given the exellent appraise at the International Conference in Japan (Sept., 1998, Kokura) and China. (Oct., 1998 at Xian)2. A new fact that both the oxidation of N^<3-> ion and reduction of NO_3- ion can sythesize a TiN compound on metallic Ti electrode was found. And these results in condensed plasma reaction can introduce to synthesize the various other metallic nitrides such as FeNx. ZrN.WN.NbN..3. By means of XPS and Ramman spectroscopy, a second stage compound was covered with planar-sheet graphite fluoride which can protect the bulk graphite fluoroarsenates from the attack of moisture in air.3. It was … More cleared after the electrochemical measurments that a capacity of hydrogen absorbability in Pd-LI alloy was larger than metallic Pd.4. An attempt of DC discharging electrolysis improved in their circuit to be stable can produce metallic fine powder and expected to be a new method for metallic powder production.5. A thick nitride compound film with 100 - 200 mum was formed by a DC arcc plasma jet. X-ray micro-diffraction pattern and SEM microscopy revealed 3 different phases on the surface whose thickness were strongly depend on plasma gas ratio of N2/H2. By the spectroscopy of plasma flame in the range of 300 - 800 mum wave length, NH radical and H radical species were playing an important role in the synthesizing reaction.6. Effects of gravity on deposited metal morphology in the condensed plasma reaction were examined using drop shaft apparatus in JAMIC, the gravity has a certain effects on nucleation or growth rate in metallic deposition after comparing the SEM images of microcrystals electrodeposited with and without gravity. Less