-
公开(公告)号：US07368050B2
公开(公告)日：2008-05-06
申请号：US11086191
申请日：2005-03-21
IPC分类号： G01N17/04
CPC分类号： G01N17/02
摘要： The invention provides an electrochemical noise method, apparatus and system for estimating parameters of interest related to corrosion rates of an electrically conductive article, the method comprising: placing a working electrode, a reference electrode, and a counter electrode in an environment of interest; measuring potential at open circuit between the working electrode and the reference electrode over time; placing the working electrode under a potentiostatic control; measuring current between the working electrode and the counter electrode for a predetermined period of time, the period of time of measurements may be extended to include a transient event; and estimating the corrosion rate.
摘要翻译： 本发明提供了一种用于估计与导电制品的腐蚀速率有关的参数的电化学噪声方法，装置和系统，所述方法包括：将工作电极，参比电极和对电极放置在感兴趣的环境中; 测量工作电极与参考电极之间的开路电位随时间的变化; 将工作电极置于恒电位控制下; 在预定的时间段内测量工作电极和对电极之间的电流，测量时间可以延长到包括瞬时事件; 并估算腐蚀速率。
-
公开(公告)号：US20140314620A1
公开(公告)日：2014-10-23
申请号：US13866674
申请日：2013-04-19
IPC分类号： C23F11/18
CPC分类号： C23F11/187 , C02F1/70 , C02F5/083 , C02F5/105 , C02F2103/365 , C02F2303/08 , C09K5/10 , C09K8/54 , C23F11/08
摘要： An oxygen scavenger composition is effective in reducing oxygen-induced corrosion in aqueous systems that contain water, oxygen and a significant proportion (at least about 20 wt %) of a glycol, such as monoethylene glycol (MEG). The oxygen scavenger composition contains a sulfite, a transition metal salt, and a stabilizer to enhance the kinetics of oxygen removal (scavenging). The oxygen scavenger composition is particularly suitable when the transition metal salt component includes at least two different transition metals together, such as Ni and Co, or Ni and Mn.
摘要翻译： 除氧剂组合物在含有水，氧气和显着比例（至少约20重量％）的二醇例如单乙二醇（MEG）的含水体系中有效减少氧诱发的腐蚀。 除氧组合物含有亚硫酸盐，过渡金属盐和稳定剂，以增强除氧（清除）的动力学。 当过渡金属盐组分包括至少两种不同的过渡金属如Ni和Co，或Ni和Mn时，除氧剂组合物是特别合适的。
-
公开(公告)号：US07713405B2
公开(公告)日：2010-05-11
申请号：US12116003
申请日：2008-05-06
IPC分类号： G01N17/04
CPC分类号： G01N17/02
摘要： An electrochemical noise method, apparatus and system may be used to estimate and/or calculate parameters of interest related to corrosion rates of an electrically conductive article. The apparatus involves a working electrode (having substantially the same composition of the electrically conductive article), a reference electrode, and a counter electrode in an environment of interest. The working electrode is placed under potentiostatic control. A current transient between the working electrode and the counter electrode is measured. The working electrode is switched to open potential. A potential transient is measured over the duration of a localized corrosion event. The localized corrosion may then be calculated based on the measured potential transient and the current transient.
摘要翻译： 可以使用电化学噪声方法，装置和系统来估计和/或计算与导电制品的腐蚀速率相关的感兴趣参数。 该设备包括在感兴趣的环境中的工作电极（具有基本相同的导电制品组成），参考电极和对电极。 工作电极置于恒电位控制下。 测量工作电极和对电极之间的电流瞬变。 工作电极切换到开放电位。 在局部腐蚀事件的持续时间内测量潜在的瞬态。 然后可以基于测量的电位瞬变和电流瞬态来计算局部腐蚀。
-
公开(公告)号：US07686938B2
公开(公告)日：2010-03-30
申请号：US11262861
申请日：2005-10-31
IPC分类号： G01N17/04
CPC分类号： G01N17/02
摘要： An electrochemical noise method, apparatus and system calculates parameters of interest related to corrosion rates of an electrically conductive article. The method involves placing a test electrode, a reference electrode, and an auxiliary electrode in an environment of interest; placing the test electrode under potentiostatic control regime for a potential scan; measuring the relationship of current v. potential (polarization resistance, Rp) of the test electrode relative to the reference electrode during a first period; switching from potentiostatic control to the open circuit potential (OCP) of the test electrode; monitoring the OCP of the test electrode during a second period; determining ΔI from the relationship Rp=ΔV/ΔI, where ΔV is measured over a second period of time; and calculating the localized corrosion from the measured potential and current data.
摘要翻译： 电化学噪声方法，装置和系统计算与导电制品的腐蚀速率有关的参数。 该方法包括在感兴趣的环境中放置测试电极，参考电极和辅助电极; 将测试电极置于恒电位控制方案下进行电位扫描; 测量在第一周期期间测试电极相对于参考电极的电流v电位（极化电阻Rp）的关系; 从恒电位控制切换到测试电极的开路电位（OCP）; 在第二期间监测测试电极的OCP; 根据关系Rp =＆Dgr; V /＆Dgr; I，其中＆Dgr; V在第二时间段内测量并确定Dgr; I; 并从测量的电位和当前数据计算局部腐蚀。
-
公开(公告)号：US09249516B2
公开(公告)日：2016-02-02
申请号：US13866674
申请日：2013-04-19
IPC分类号： C23F11/00 , C23F11/04 , C23F11/16 , B08B9/04 , C02F5/02 , C23F11/18 , C23F11/08 , C02F5/08 , C02F1/70 , C02F5/10 , C02F103/36
CPC分类号： C23F11/187 , C02F1/70 , C02F5/083 , C02F5/105 , C02F2103/365 , C02F2303/08 , C09K5/10 , C09K8/54 , C23F11/08
摘要： An oxygen scavenger composition is effective in reducing oxygen-induced corrosion in aqueous systems that contain water, oxygen and a significant proportion (at least about 20 wt %) of a glycol, such as monoethylene glycol (MEG). The oxygen scavenger composition contains a sulfite, a transition metal salt, and a stabilizer to enhance the kinetics of oxygen removal (scavenging). The oxygen scavenger composition is particularly suitable when the transition metal salt component includes at least two different transition metals together, such as Ni and Co, or Ni and Mn.
摘要翻译： 除氧剂组合物在含有水，氧气和显着比例（至少约20重量％）的二醇例如单乙二醇（MEG）的含水体系中有效减少氧诱发的腐蚀。 除氧组合物含有亚硫酸盐，过渡金属盐和稳定剂，以增强除氧（清除）的动力学。 当过渡金属盐组分包括至少两种不同的过渡金属如Ni和Co，或Ni和Mn时，除氧剂组合物是特别合适的。
-
公开(公告)号：US07622030B2
公开(公告)日：2009-11-24
申请号：US11499630
申请日：2006-08-04
CPC分类号： G01N17/02
摘要： Simultaneous determination of general corrosion and localized corrosion rate measurements is achieved with polarization applied by the electrodes themselves rather than externally applied polarization. Two or more working electrodes may be galvanically coupled. A localized pitting corrosion event on one of the electrodes will lead to a potential transient. The area within the potential transient is measured with the baseline being the initial starting potential. This gives localized corrosion as a function of time. The relationship Rp=ΔV/ΔI is calculated, where Rp is the polarization resistance of the working electrodes and is a measure of generalized corrosion rate.
摘要翻译： 通过电极自身施加的极化而不是外部施加的极化来实现一般腐蚀和局部腐蚀速率测量的同时测定。 两个或多个工作电极可以电耦合。 其中一个电极上的局部点腐蚀事件将导致潜在的瞬变。 以基线为初始起始电位来测量潜在瞬态内的面积。 这使得局部腐蚀作为时间的函数。 计算关系Rp = DeltaV /ΔI，其中Rp是工作电极的极化电阻，并且是广义腐蚀速率的量度。
-
公开(公告)号：US20080283418A1
公开(公告)日：2008-11-20
申请号：US12116003
申请日：2008-05-06
IPC分类号： G01N17/04
CPC分类号： G01N17/02
摘要： An electrochemical noise method, apparatus and system may be used to estimate and/or calculate parameters of interest related to corrosion rates of an electrically conductive article. The apparatus involves a working electrode (having substantially the same composition of the electrically conductive article), a reference electrode, and a counter electrode in an environment of interest. The working electrode is placed under potentiostatic control. A current transient between the working electrode and the counter electrode is measured. The working electrode is switched to open potential. A potential transient is measured over the duration of a localized corrosion event. The localized corrosion may then be calculated based on the measured potential transient and the current transient.
摘要翻译： 可以使用电化学噪声方法，装置和系统来估计和/或计算与导电制品的腐蚀速率相关的感兴趣参数。 该设备包括在感兴趣的环境中的工作电极（具有基本相同的导电制品组成），参考电极和对电极。 工作电极置于恒电位控制下。 测量工作电极和对电极之间的电流瞬变。 工作电极切换到开放电位。 在局部腐蚀事件的持续时间内测量潜在的瞬态。 然后可以基于测量的电位瞬变和电流瞬态来计算局部腐蚀。
-
-
-
-
-
-
搜索结果
7 条记录 (耗时 0.012 秒)
