Measurement of Hydrogen Content in Molten Metal by electrochemical cell based on oxide proton conductor.

基于氧化物质子导体的电化学电池测量熔融金属中的氢含量。

基本信息

  • 批准号:
    04453057
  • 负责人:
  • 金额:
    $ 2.94万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for General Scientific Research (B)
  • 财政年份:
    1992
  • 资助国家:
    日本
  • 起止时间:
    1992 至 1993
  • 项目状态:
    已结题

项目摘要

At first, the electrochemical properties of the proton-conductive solid electrolyte to be used, CaZrO_3(+In_2O_3), were investigated by measuring the hydrogen solubility, the total conductivity, and the electronic conductivity. By these measurements, it was confirmed that the protonic-conductive domain of CaZrO_3(+In_2O_3) extends to the higher temperature region than that of SrCeO_3(Yb_2O_3). Then, the hydrogen sensor for molten aluminum based on the hydrogen concentration cell was constructed by using this material as the electrolyte and the performance of this sensor was investigated. The accurate measurement of the hydrogen potential in molten aluminum is possible when the cell was designed to measure the hydrogen potential of the gas phase equilibrated with the molten metals.The similar type of hydrogen sensor for molten copper was also studied. It was found that the insertion-type sensor operates well for molten copper. But, in these high temperature and high oxygen potential, the EMF values deviate from the theoretical one owing to the appearance of positive hole conductance. The simultaneous measurement of oxygen potential was found to be necessary to evaluate the correct hydrogen potential in molten copper.An apparatus to evaluate the hydrogen activity in metals were also developed. This apparatus is based on Sieverts' method, where the partial pressure of hydrogen is determined electrochemically using the same proton-coductive solid electrolyte. The performance of this apparatus were also studied.Consequently, all the items planned in the start of this research project were accomplished successfully.
首先,通过测量氢的溶解度、总电导率和电子电导率,研究了所用质子导电固体电解质CaZrO_3(+In_2O_3)的电化学性质。通过这些测量,证实了CaZrO_3(+In_2O_3)的质子导电区扩展到了比SrCeO_3(Yb_2O_3)更高的温区。然后,以该材料为电解液,构建了基于氢气浓差电池的铝液氢气传感器,并对传感器的性能进行了研究。当电解池被设计成测量与熔融金属相平衡的气相的氢势时,可以准确地测量铝熔体中的氢势。结果表明,插入式传感器对铜熔体有很好的测量效果。但是,在这些高温和高氧势下,由于出现了正的空穴电导,电动势偏离了理论值。同时测量氧势对于评估铜熔体中正确的氢势是必要的。还研制了一种评估金属中氢活度的装置。这个装置是基于Sieverts的方法,其中氢的分压是使用相同的质子导电性固体电解质进行电化学测定的。并对该装置的性能进行了研究,顺利完成了本研究项目启动时计划的各项工作。

项目成果

期刊论文数量(48)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
武津典彦: "プロトン導電性固体電解質を用いた溶融銅用水素センサー" 第18回固体イオニクス討論会講演要旨集. 27-28 (1992)
Norihiko Taketsu:“使用质子传导固体电解质的熔融铜的氢传感器”第 18 届固态离子研讨会摘要 27-28(1992 年)。
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    0
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N.Fukatsu: "Electrochemical Determination of Hydrogen Potential in Molten Copper." Extended Abstracts of the 93' Spring Meeting of MMIJ. 121-122 (1993)
N.Fukatsu:“电化学测定熔融铜中的氢势”。
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    0
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  • 通讯作者:
K.Ito: "Electrochemical Properties of Proton-Conductive Oxide CaZrO_3(+In_2O_3)." Extended Abstracts of the 18th Symposium on Solid State Ionics in Japan. 13-14 (1992)
K.Ito:“质子传导氧化物 CaZrO_3(In_2O_3) 的电化学性质。”
  • DOI:
  • 发表时间:
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    0
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T.Yajima: "A new hydrogen sensor for molten aluminum" Sensors and Actuators B. 13-14. 697-699 (1993)
T.Yajima:“一种用于熔融铝的新型氢传感器”传感器和执行器 B.13-14。
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    0
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武津典彦: "溶融Zn-Al合金中の溶存ガスの挙動" 日本金属学会講演概要(第113回大会). 427-427 (1993)
Norihiko Taketsu:“熔融锌铝合金中溶解气体的行为”日本金属学会演讲摘要(第 113 届大会)427-427(1993 年)。
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    0
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FUKATSU Norihiko其他文献

FUKATSU Norihiko的其他文献

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{{ truncateString('FUKATSU Norihiko', 18)}}的其他基金

Synthesis of supersaturated type proton conducting oxides
过饱和型质子传导氧化物的合成
  • 批准号:
    19206081
  • 财政年份:
    2007
  • 资助金额:
    $ 2.94万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
Development of the protecting method for hydrogen(and its isotopes) permeation through metallic pipes by cathodic polarization
金属管道氢(及其同位素)渗透阴极极化防护方法的研制
  • 批准号:
    16360373
  • 财政年份:
    2004
  • 资助金额:
    $ 2.94万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Development of super high temperature-type proton conductor based on alpha alumina.
基于α氧化铝的超高温型质子导体的开发。
  • 批准号:
    13450308
  • 财政年份:
    2001
  • 资助金额:
    $ 2.94万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Development of Ultra High-Temperature Oxide Proton Conductive Solid Electrolyte
超高温氧化物质子导电固体电解质的研制
  • 批准号:
    09450278
  • 财政年份:
    1997
  • 资助金额:
    $ 2.94万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Absorption Mechanism of Hydrogen into Molten Aluminum
铝液吸氢机理
  • 批准号:
    07455431
  • 财政年份:
    1995
  • 资助金额:
    $ 2.94万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Isotope Effects of Hydrogen Ion Transport in SrCeO_3(+Y_2O_3) and its Applications
SrCeO_3(Y_2O_3)中氢离子输运的同位素效应及其应用
  • 批准号:
    63550490
  • 财政年份:
    1989
  • 资助金额:
    $ 2.94万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)

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