摘要:
This invention comprises electrochemical analytical devices (2) capable of performing electrolysis in multiple pulse modes. It relates to a method of quantitative analysis and equipment for performing quantitative analysis which uses a combination of these pulse modes to realize the measurement of concentrations of multiple substances to be measured, occurring in the test solution to be measured and also a nuclear reactor(1) water quality control system employing such a quantitative analysis method.
摘要:
Provided is a surface treatment technique for a metal base material, which can be applied also to a metal base material in the form of a thin film, can substantially maintain the function of the surface of the metal base material, and provides excellent corrosion resistance and pitting corrosion resistance. The present invention relates to a corrosion-proof aluminum material, including: a metal base material composed of aluminum or an aluminum alloy; and a coating film layer formed with a silane coupling agent having a sulfur atom and disposed on a surface of the metal base material, wherein the ratio of the concentration of sulfur atom in the surface of the coating film layer to the concentration of aluminum atom is 0.4 or more.
摘要:
A corrosion degree measuring method capable of field measurement for intergranular corrosion, particularly the sensitization degree, of the plant's structural materials in a narrow space. The metal electrode (24) made of a material being measured and the counter electrode (17) to the metal electrode are immersed in an electrolytic solution. A voltage is applied to the metal electrode (24) in the anodic direction so as to raise the potential of the metal electrode (24) up to the passive state potential and to keep the metal electrode (24) at the passive state potential. The passive state potential is used as a reference potential, and a pulse-like potential signal is applied to the metal electrode in the cathodic direction. At the time of the application of the pulse potential signal, a current between the metal electrode (24) and the counter electrode (17) is measured, and the corrosion degree of the material being measured is determined from the intensity of the current.
摘要:
This invention comprises electrochemical analytical devices (2) capable of performing electrolysis in multiple pulse modes. It relates to a method of quantitative analysis and equipment for performing quantitative analysis which uses a combination of these pulse modes to realize the measurement of concentrations of multiple substances to be measured, occurring in the test solution to be measured and also a nuclear reactor(1) water quality control system employing such a quantitative analysis method.
摘要:
A corrosion degree measuring method capable of field measurement for intergranular corrosion, particularly the sensitization degree, of the plant's structural materials in a narrow space. The metal electrode (24) made of a material being measured and the counter electrode (17) to the metal electrode are immersed in an electrolytic solution. A voltage is applied to the metal electrode (24) in the anodic direction so as to raise the potential of the metal electrode (24) up to the passive state potential and to keep the metal electrode (24) at the passive state potential. The passive state potential is used as a reference potential, and a pulse-like potential signal is applied to the metal electrode in the cathodic direction. At the time of the application of the pulse potential signal, a current between the metal electrode (24) and the counter electrode (17) is measured, and the corrosion degree of the material being measured is determined from the intensity of the current.
摘要:
A plant operational status monitoring supervisory system comprising; means for extracting information directly relating to water quality of an objective portion consecutively for a period of time by means of an electrochemical water quality sensor (2) installed in an objective portion (3) to monitor in-situ in a plant; means (6) for evaluating water quality based on thus extracted information; means (6) for comparing an obtained water quality evaluation result with a reference value for a predetermined plant operation procedure; and means (7) for displaying or storing necessary portion out of said comparison results; is disclosed. An electrochemical reference electrode used in this system being provided with an electrolyte layer (23) containing ion of the electrode member; a porous ceramic layer (22) surrounding the same without permeating liquid; and electrode member (26) electrochemically contacting with said elec-trolyte layer (23) ; and a terminal (31) electrically contacting with said electrode member; and further having a long life in high temperature water, various status of high temperature water in objective portions and that of nearby constituent members in a plant are possible to be monitored online by means of this reference electrode. Further, because monitored data are processed by means of a neural network, the higher precision level of monitoring has been achieved.
摘要:
Provided is a surface treatment technique for a metal base material, which can be applied also to a metal base material in the form of a thin film, can substantially maintain the function of the surface of the metal base material, and provides excellent corrosion resistance and pitting corrosion resistance. The present invention relates to a corrosion-proof aluminum material, including: a metal base material composed of aluminum or an aluminum alloy; and a coating film layer formed with a silane coupling agent having a sulfur atom and disposed on a surface of the metal base material, wherein the ratio of the concentration of sulfur atom in the surface of the coating film layer to the concentration of aluminum atom is 0.4 or more.