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8133383 |
Localized corrosion monitoring device for limited conductivity fluids
A localized corrosion monitoring (LCM) device is modified to obtain polarization resistance (Rp) from electrical resistance of a probe having a strip of metal under investigation (test electrode),...
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8111078 |
Oxidizing power sensor for corrosion monitoring
A method based on the measurement of the oxidation power or the cathodic current density using a corrosion-resistant electrode (noble electrode) to derive the bounding corrosion rates of the...
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7967959 |
Cathodic protection method and apparatus
A cathodic protection system for use in an electrolyte includes a protected structure to be at least partially immersed in the electrolyte, at least one sacrificial anode to be at least partially...
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7884626 |
Cathodic protection monitor
A cathodic protection monitor to be electrically connected to a cathodic protection rectifier that is adapted to prevent rust, corrosion and possible leakage in an underground pipe or storage tank...
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7758743 |
Electrochemical corrosion potential sensor and method of making
A sensor for measuring electrochemical corrosion potential includes an electrical conductor, a metal-oxide layer disposed on the electrical conductor, and a zirconia-containing layer disposed on...
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7719292 |
Method and apparatus for electrochemical corrosion monitoring
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...
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7713405 |
Quantitative transient analysis of localized corrosion
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...
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7704371 |
Corrosion identification and management system
The present invention is directed to a system for identifying and managing corrosion and methods related thereto. In particular, the invention provides a system for identifying and managing the...
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7686938 |
Quantitative, real time measurements of localized corrosion events
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...
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7678260 |
Measurement of cumulative localized corrosion rate using coupled multielectrode array sensors
Methods of deriving the cumulative maximum localized corrosion rate and cumulative localized corrosion rate factor for corrosion monitoring using coupled multielectrode array sensor probes are...
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7675297 |
Methods for measuring bounding corrosion rates using coupled multielectrode sensors and eliminating the effects of bad electrodes
The bounding corrosion rate is measured with a coupled multielectrode array sensor by decoupling a select number of anodic electrodes on the sensor from the coupling joint. In doing so, all or most...
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7622030 |
General and localized corrosion rate measurements
Simultaneous determination of general corrosion and localized corrosion rate measurements is achieved with polarization applied by the electrodes themselves rather than externally applied...
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7572360 |
Electrochemical fatigue sensor systems and methods
A method for determining a fatigue status of a growing crack in a substrate. An electrochemical sensor device is provided and includes an electrode formed from a stainless steel mesh. The...
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7541817 |
Method and a system of diagnosing corrosion risk of a pipe or a pipeline in soil
A method of diagnosing corrosion risk of a buried pipe due to DC stray currents and/or AC voltages induced in soil employs a metal probe including a first, exposed part having a first specific...
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7520975 |
Estimation of localised corrosion penetration
The present invention provides a method and apparatus for estimation of general and localized corrosion penetration rates of metallic materials and objects. The invention can also be used to...
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7468124 |
Method and apparatus for copper corrosion prevention during wet clean
A method and apparatus for cleaning a wafer with a metal exposed through an insulator, through the use of a wet cleaning tank in concert with a feedback system on the potential difference between...
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7466149 |
Electronic system and software for multielectrode sensors and electrochemical devices
An electronic system and software program for multielectrode electrochemical devices; a multielectrode sensor for application in environments containing electrochemically active species; and a...
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7422678 |
Evaluation of the corrosion inhibiting activity of a coating
The corrosion inhibiting activity of a coating is determined from the effect of corrosion inhibiting species released by the coating on the oxygen reduction current for a cathode placed very close...
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7368050 |
Quantitative transient analysis of localized corrosion
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...
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7309414 |
Method for measuring localized corrosion rate with a multi-electrode array sensor
A method of measuring localized corrosion, using a multi-electrode array sensor. The method eliminates the effect of internal current in corroded electrodes, and thus provides a more accurate...
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7285203 |
Method and apparatus for instrumental analysis in remote locations
The present invention provides a method and apparatus for instrumental analysis in remote locations. In one embodiment, the present invention provides a method of controlling cathodic protection...
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7282928 |
Corrosion measurement field device with improved LPF, HDA, and ECN capability
Low power corrosion measurement devices are described with improved LPR, HDA, and ECN measurement capabilities in a field transmitter for online corrosion monitoring or off-line corrosion data...
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7265559 |
Self-calibrating corrosion measurement field device with improved signal measurement and excitation circuitry
Low power corrosion measurement devices are described with improved signal measurement and excitation circuitry in a field transmitter for online corrosion monitoring or off-line corrosion data...
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7245132 |
Intrinsically safe corrosion measurement and history logging field device
Corrosion measurement devices are described with electrical isolation and intrinsic safety barriers advanced corrosion measurement in a field transmitter for online corrosion monitoring or off-line...
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7239156 |
Configurable corrosion measurement field device
Low power corrosion measurement devices are described with programmable configuration for implementing one or more advanced corrosion measurement types to provide conductivity, general corrosion,...
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7125482 |
Use of electrochemistry to detect buried service lead (Pb) and copper (Cu) water pipes
The present invention relates to using a rectifier, a groundbed consisting of four (4) copper rods, power supply, three (3) copper/copper sulfate (Cu/CuSO4) reference electrodes, a data logger for...
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7063781 |
Techniques for sensing chloride ions in wet or dry media
Techniques are provided for measuring chloride ion concentration in a medium. The techniques allow measurements to be made in dry or alkaline media, or both. For alkaline conditions, a sensor...
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7060177 |
Method and apparatus for measuring electrochemical corrosion potential inside small shallow cracks
A method of measuring an electrochemical corrosion potential (ECP) of a material specimen using a detecting device including an ECP detecting array is provided. The method includes locating an...
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7034660 |
Sensor devices for structural health monitoring
Described herein are wireless interrogation systems and methods that rely on a complementary sensing device and interrogator. The sensing device is disposed to measure a parameter indicative of the...
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6960288 |
Method and device for detecting microbiologically induced corrosion
The invention concerns a sensor and a method for detecting microbiologically induced corrosion in a metal structure, which consists in performing the following steps: providing a sensor comprising...
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6936158 |
Method and apparatus for measuring accumulated and instant rate of material loss or material gain
The present invention relates to a method and an apparatus for measuring accumulated and instant rate of material loss or material gain of metal elements for the detection of metal deposition...
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6896779 |
Corrosion sensor
A system using tank corrosion sensors to provide for an overall assessment and monitoring of the electro-chemical corrosion and coatings condition in ships' tanks, and particularly in ships'...
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6884333 |
Electrochemical system for analyzing performance and properties of electrolytic solutions
The invention relates to the analysis of the performance and properties of electrochemical processes, and specifically, to electrolytic solutions and electrode processes. The invention discloses a...
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6814854 |
Hydrogen permeation probe method
A method for the in situ measurement of atomic hydrogen permeation into carbon steel from process streams under operating conditions of up to 3000 psi and temperatures up to 300° F. includes ...
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6805788 |
Electrochemical impedance evaluation and inspection sensor
An apparatus for electrochemical impedance spectroscopy having a solid electrolyte is disclosed. The apparatus has a chamber made of an electronically insulating material, a solid electrolyte...
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6797149 |
Apparatus and method for electrochemical detection and control of inorganic scale
An electrochemical scale detection and control system, for on-line detection and control of nucleation and growth of inorganic scales. The system comprises sensitive microprocessor controlled...
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6776889 |
Corrosion monitoring
A corrosion monitor comprising electronic circuitry arranged such that DC current flowing between two electrodes is reduced to essentially zero, while allowing any naturally occurring AC current...
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6646427 |
Determination of chloride corrosion threshold for metals embedded in cementitious material
The chloride corrosion threshold of a metal embedded in a cementitious structure is determined in an accelerated manner by using an electric field to increase the rate of migration of chloride ion...
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6623616 |
Corrosive environment monitor and methods regarding same
A monitoring method and system to monitor an environment in which an object is located includes monitoring one or more environmental factors associated with corrosion of materials in the...
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6610185 |
Electrochemical corrosion potential sensor and method of making
A sensor for measuring electrochemical corrosion potential, and a method for manufacturing a sensor, the sensor comprising a tubular ceramic probe having a closed tip at one end, the probe at least...
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6582587 |
Cathodic protection design method, current mapping and system
Numerical techniques such as the finite element method (FEM) are used to model the current and voltage distribution in concrete structures such as bridges. The geometric arrangement of groundbeds...
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6501286 |
Multiple reference electrode array for measuring open circuit potentials in artificial crevices
An electrode array device for use with a conductive element to simulate a crevice that is subject to corrosive conditions. The device includes a non-conductive member and a plurality of electrodes....
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6478948 |
Method of monitoring and controlling corrosion of furnace boiler tubes
A method for monitoring and reducing corrosion in furnace boiler tubes measures electrochemical noise associated with corrosion mechanisms while corrosion is occurring at the surface of the tubes...
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6419817 |
Dynamic optimization of chemical additives in a water treatment system
The present invention describes an apparatus for the optimized control of various treatment chemicals (inhibitors) applied for corrosion and/or deposit inhibition. The apparatus consist of a...
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6391173 |
Electrochemical corrosion potential sensor
An electrochemical corrosion potential sensor includes a ceramic tip insulating member, and a sensor tip joined to the ceramic tip insulating member, the sensor tip comprising an alloy. Further, a...
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6365034 |
High throughput electrochemical test for measuring corrosion resistance
A high throughput electrochemical test method for determining the resistance to corrosion of a metal article coated with a resinous coating which comprises: (a) making, as the working electrode in...
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6365035 |
Method for measuring properties of the stack and the corrosion of materials in a soda recovery unit
The invention relates to a method for measuring the properties of a stack (15) that viscous molten salt forms on the bottom of a soda recovery unit (14) while black liquor is burned therein, and...
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6355157 |
Process for real-time detection and inhibition of localized corrosion
This invention describes a novel means of determining the nature (type) of corrosion in real-time. By identifying localized corrosion at the moment of pit initiation, real-time selection, and...
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6313646 |
In-situ electrochemical-based moisture sensor for detecting moisture in composite and bonded structures
A hand-held or permanently attached corrosion sensor is described that uses electrochemical impedance spectroscopy (EIS, also known as AC impedance) to detect coating and structural degradation...
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6294074 |
Electrode design for corrosion monitoring using electrochemical noise measurements
An electrode design is provided for corrosion monitoring using electrochemical noise measurements. Electrochemical probes are used for sensing electrochemical noise voltage values and...
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