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    • 8. 发明申请
    • DEVICE FOR DETERMINING AMOUNT OF HYDROGEN PENETRATING INTO METAL
    • 用于确定金属渗透量的装置
    • WO2014054186A1
    • 2014-04-10
    • PCT/JP2012076256
    • 2012-10-03
    • JFE STEEL CORPTOKYO INST TECH
    • OOTSUKA SHINJINAKAMARU HIROKIFUJITA SAKAETSURU TOORU
    • G01N27/26G01N17/02
    • G01N17/02G01N27/304G01N27/4045G01N33/203
    • The present invention addresses a problem of providing a measuring device which can accurately determine the amount of hydrogen that has penetrated into a metal with the progress of corrosion, while taking account of any change of anode-side residual current accompanying a change in the temperature of the environment. One surface of a specimen constituted of a metallic material is used as a hydrogen penetration surface, which is exposed to a corrosive environment and into which the hydrogen that is evolved by a corrosion reaction penetrates, and the other surface is used as a hydrogen detection surface. An electrochemical cell set configured of a plurality of cells is disposed on the hydrogen detection surface. An aqueous electrolyte solution having a pH of 9-13 is packed into each of the cells, and a reference electrode and a counter electrode that are independent of each other are disposed therein. At least one of the cells is used as a standard cell for correcting residual current, and a protective film for avoiding contact with the corrosive environment is disposed in the area of the hydrogen penetration surface which corresponds to the hydrogen detection area for the standard cell. The anode current value detected with each cell other than the standard cell is corrected with the value of residual current detected with the standard cell. On the basis of the corrected anode current value, the amount of hydrogen that has penetrated from the corrosion-surface side is calculated.
    • 本发明解决了提供一种测量装置的问题,该测量装置能够随着腐蚀的进行而精确地确定渗透到金属中的氢的量,同时考虑到伴随温度变化的阳极侧剩余电流的任何变化 环境。 使用由金属材料构成的试样的一个表面作为氢气侵蚀面,暴露在腐蚀环境中,通过腐蚀反应渗入的氢被渗透到其中,另一个表面用作氢气检测面 。 由多个电池构成的电化学电池组设置在氢气检测表面上。 在每个电池中填充pH为9-13的电解质水溶液,并且在其中设置彼此独立的参比电极和对电极。 至少一个电池被用作用于校正残余电流的标准电池,并且用于避免与腐蚀环境接触的保护膜设置在对应于标准电池的氢气检测区域的氢气穿透表面的区域中。 用标准单元以外的各个单元检测的阳极电流值用标准单元检测出的剩余电流的值进行校正。 基于校正的阳极电流值,计算从腐蚀面侧渗透的氢的量。