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公开(公告)号：EP2384430A1
公开(公告)日：2011-11-09
申请号：EP10726822.9
申请日：2010-01-04
CPC分类号： G01N17/02
摘要： The present invention is directed to a process for corrosion resistance evaluation of coated metals substrates, such as autobodies. An anode and cathode coated with protective coating being tested are exposed to an electrolyte in a chamber of a corrosion resistance evaluator. These coatings are provided with predetermined and standardized defects, such as micro-holes to accelerate the corrosion of the underlying metal substrate in a predictable and repeatable manner. The coated cathode/anode pair is subject to a start-up period followed by series preset DC voltages for preset durations that are interspaced with recovery periods. The impedance data collected are then used to arrive at the corrosion performance resistance of the coating applied over the cathode/anode pair. The foregoing evaluator substantially reduces the time required to test corrosion from several days (40 plus days) to few days (about two days).
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公开(公告)号：EP2380002A1
公开(公告)日：2011-10-26
申请号：EP09793377.4
申请日：2009-12-08
发明人： YEPEZ, Omar J. , RANDOLPH, Bruce B. , GONG, Xiaoyi
CPC分类号： G01N17/02 , G01N33/2888
摘要： An electrochemical cell apparatus and method comprising a first electrode and a second electrode wherein the area ratio between them is 10 or higher, for example a metal plate and a metal wire; wherein said first and second electrodes are made from the same material; and wherein the distance between said first electrode and said second electrode is preferably in the range of from about 1 mm to about lμm is provided. Such electrochemical cell can be used to measure crude oil corrosion using an electrochemical impedance method.
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44.发明公开System and Method for Online Monitoring of Corrosion 有权系统和Verfahren zur Online-Überwachungvon Korrosion
公开(公告)号：EP2375234A2
公开(公告)日：2011-10-12
申请号：EP11161625.6
申请日：2011-04-08
摘要： A system and method for online monitoring of corrosion of a pressure vessel (12) is disclosed. First and second electrodes (40) may be isolated from each other in a wall (28) of the pressure vessel (12) and exposed to a corrosive environment within the pressure vessel (12). Additionally, the first and second electrodes (40) may be electrically coupled such that, when an electrical potential difference exists between the electrodes (40), an electrical current flows between the first electrode (40) and the second electrode (40). The electrical potential difference and/or the electrical current flowing between the electrodes (40) may then be measured and analyzed to determine when to perform a corrective action on the pressure vessel (12).
摘要翻译： 公开了一种用于在线监测压力容器（12）的腐蚀的系统和方法。 第一和第二电极（40）可以在压力容器（12）的壁（28）中彼此隔离并且暴露于压力容器（12）内的腐蚀性环境。 此外，第一和第二电极（40）可以电耦合，使得当在电极（40）之间存在电势差时，电流在第一电极（40）和第二电极（40）之间流动。 然后可以测量和分析在电极（40）之间流动的电势差和/或电流，以确定何时对压力容器（12）执行校正动作。
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45.发明公开Method and apparatus for estimating the condition of a coating on an underground pipeline 审中-公开装置和方法用于评估地下管道的涂层的状况
公开(公告)号：EP2372354A2
公开(公告)日：2011-10-05
申请号：EP11169508.6
申请日：2009-10-30
CPC分类号： G01N17/02
摘要： Methods are provided for reducing interference from stray currents in buried pipelines/metal structures during MEIS testing or other current-sensing applications in the pipeline. Methods are also provided for measuring bulk complex electrical impedance between a buried pipe and the soil, thereby rendering an indication of the quality of the anti-corrosive coating. Methods are also provided for measuring the complex propagation constant of AC voltages propagating along an attenuative pipeline. This information is useful for assessing the general condition of the anti-corrosive coating involved, or to enhance MEIS inspection of the pipeline. Methods are also provided for enhancements to MEIS testing, including (a) canceling magnetometer offset effects associated with the Earth's magnetic field after the magnetometer is positioned for measurement, (b) implementing a separate sensing connection to the pipe so as to avoid interference from voltage loss in the pipe feed-line connection, (c) providing a power amplifier to excite the pipe with large-amplitude signals.
摘要翻译： 提供了用于减少在管道MEIS测试或其他电流检测应用中埋地管道/金属结构从杂散电流干扰的方法。 这样的方法是提供一种用于测量埋设管与土壤之间散装复杂的电气阻抗，从而使防腐蚀涂层的质量的指示。 这样提供了用于测量沿着在衰减性管道传播AC电压的复传播常数的方法。 此信息是用于assesing抗腐蚀涂层参与，或以提高管道的MEIS检查的一般状况是有用的。 这样提供了用于增强MEIS测试，包括方法（a）中删除与该地球磁场相关联的磁力抵消效应的磁力计被定位用于测量后，（b）执行的单独的感测连接到管道，从而避免从电压干扰 损失在管连接馈线，（c）提供的功率放大器，以激发具有大振幅信号的管道。
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公开(公告)号：EP2271915A1
公开(公告)日：2011-01-12
申请号：EP08874233.3
申请日：2008-11-14
CPC分类号： G01N21/658
摘要： A method of analyzing an effect of a first substance on the behavior of a second substance comprises exposing a test material to the first substance, performing a first surface enhanced Raman spectroscopy analysis of the test material while it is exposed to the first substance, exposing the test material to the first substance and to the second substance, and performing a second surface enhanced Raman spectroscopy analysis of the test material while it is exposed to the first substance and to the second substance. Results of the first and second analyses are compared to identify a change in the behavior of the first substance.
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公开(公告)号：EP2198266A1
公开(公告)日：2010-06-23
申请号：EP08837686.8
申请日：2008-10-10
发明人： EDEN, David A.
摘要： A method and apparatus for simultaneously and continuously monitoring both the general and localized corrosion of a working metallic electrode is provided, wherein a low frequency, low amplitude periodic potential excitation is used to perturb the electrode around its free corrosion potential. The potential is controlled with respect to a reference electrode by means of a potentiostat, and an auxiliary electrode used to stimulate current flow. The current response of the working electrode is monitored and analyzed continuously for general and localized corrosion activity. Means are provided for validation of the integrity of the current response to the applied potential excitation. Simultaneous and continuous outputs for both general and localized corrosion activity are also provided.
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公开(公告)号：EP2068139A1
公开(公告)日：2009-06-10
申请号：EP07122457.0
申请日：2007-12-06
发明人： Bos, Tom , Buter, Sibo
IPC分类号： G01N17/02
CPC分类号： G01N17/02
摘要： The invention is directed to an electrochemical cell for electrochemical impedance spectroscopy, which comprises
- a housing (3) defining a space (4) comprising an electrolyte (5), a counter electrode (6) and optionally a reference electrode (7), wherein said counter electrode and said reference electrode are arranged to be in electrical contact with said electrolyte during use;
- an opening in said housing allowing the electrolyte to be in electrical contact with a substrate (2); and
- a flexible magnet (8) for attaching said electrochemical cell to said substrate (2).摘要翻译： 本发明涉及用于电化学阻抗光谱的电化学电池，其包括 - 限定包含电解质（5），对电极（6）和任选的参考电极（7）的空间（4）的壳体（3），其中 所述对电极和所述参比电极被布置成在使用期间与所述电解质电接触; - 所述壳体中的开口，允许电解质与基底（2）电接触; 以及 - 用于将所述电化学电池附着到所述衬底（2）的柔性磁体（8）。
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49.发明授权
公开(公告)号：EP1238247B1
公开(公告)日：2009-03-18
申请号：EP00982780.9
申请日：2000-12-01
CPC分类号： G01N17/02 , G01N27/002 , Y10T436/22
摘要： Patent of invention "Process for metering hydrogen permeated in a metallurgical structure", refers to a process for metering permeated hydrogen flow in machines, equipment, piping, or other metallic apparatus, through a sensor that uses the properties of a couple of dissimilar materials, in construction and installation that are suitable to measure electrical values between a metering couple and a reference couple. The measured value is a function of the flow rate of hydrogen that permeates the metallic surface under monitoring. In consequence, we obtain a process for measuring hydrogen corrosion or hydrogen flow through an apparatus.
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50.发明公开Verfahren und Anordnung zum Erfassen von Wechselstromkorrosion an kathodisch geschützten Anlagen 审中-公开用于检测阴极保护系统的AC腐蚀的方法和装置
公开(公告)号：EP1598446A2
公开(公告)日：2005-11-23
申请号：EP05008456.5
申请日：2005-04-19
摘要： Eine Anordnung zum Erfassen von Wechselstromkorrosion an Abschnitten von kathodisch geschützten Anlagen weist eine erste Elektrode (1) und eine weitere Elektrode (3) auf. Ein Messwertaufnehmer (6) für eine elektrische Größe ist mit der ersten Elektrode (1) elektrisch gekoppelt. Zwischen der ersten Elektrode (1) und der zweiten Elektrode (3) befindet sich ein Elektrolyt (4), so dass die Elektroden (1, 3) in Elektrolytverbindung stehen. Zwischen der ersten Elektrode (1) und der zweiten Elektrode (3) ist eine Spannungsquelle (5) angeordnet, um an der ersten Elektrode (1) eine elektrochemische Reaktion einzuleiten. Es ist weiterhin eine Referenzelektrode (2) vorgesehen, die über den Elektrolyt (4) mit der ersten Elektrode (1) in Elektrolytverbindung steht. Die erste Elektrode (1) ist eine Abschnitt einer kathodisch geschützten Rohrleitung.
摘要翻译： 的方法检测腐蚀的预先组装，E.G. 管道系统，确实具有通过在电解质（4）连接的第一（1）和第二（3）电极的阴极保护。 电测量仪（6）连接到所述第一电极（1）。 的电压源（5）位于所述第一和第二电极和驱动器，以在所述第一电极的电化学反应之间。 参比电极（2）经由电解质链接到第一电极（1）（4）。 所述第一电极是阴极管，E.G. 燃气管道。
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