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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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7242201 |
Apparatus and method for detecting state of heat exchanger tube
Provided is an apparatus for concurrently detecting a defect occurring in a heat exchanger tube and a geometric transition of the heat exchanger tube. The apparatus for detecting the state of a...
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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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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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6328878 |
Adhesive tape sensor for detecting and evaluating coating and substrate degradation utilizing electrochemical processes
A portable and nondestructive adhesive tape corrosion sensor which is utilized under actual field or laboratory conditions in detecting coating and substrate degradation using Electrochemical...
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6281671 |
Electrode component group for a corrosion measuring system for detecting corrosion in a metal embedded in a component made of an ion-conducting material, in particular concrete
An electrode component group for a corrosion measuring system for detecting corrosion of a metal embedded in a construction component of ion-conducting material has a rod-shaped base body having a...
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6207030 |
Apparatus for measuring coating quality
A method and apparatus for measuring the quality, e.g., thickness, porosity, or corrosion rate, of a coating inside a hollow body having an opening. The method comprises attaching a probe from a...
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6132593 |
Method and apparatus for measuring localized corrosion and other heterogeneous electrochemical processes
An electrochemical method for measuring localized corrosion and other heterogeneous electrochemical processes is described. A multi-sensor electrode namely the wire beam electrode, integrated by...
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6106693 |
Method for measuring coating quality
A method and apparatus for measuring the quality, e.g., thickness, porosity, or corrosion rate, of a coating inside a hollow body having an opening. The method comprises attaching a probe from a...
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6099718 |
Method and device for checking and characteristics of a surface layer of a zirconium-alloy element and use for the checking of fuel rods for a nuclear reactor
A sinusoidal voltage is appied to a zirconium alloy clad fuel rod. The current is measured and the impedance is determined to provide a check for the compactness and adhesion of an oxide surface...
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6080293 |
Electrolytic test machine
An electrolytic test machine is used for a corrosion resistance test for a test material comprised of a metal blank and a coating film. The electrolytic test machine is constructed so that an...
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6077418 |
Corrosion monitoring
Corrosion of a metal member under heat transfer condition is monitored by using a test coupon made of the same material as that of the metal member. The test coupon may have a welded portion and a...
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6054038 |
Portable, hand-held, in-situ electrochemical sensor for evaluating corrosion and adhesion on coated or uncoated metal structures
A hand-held and flexible corrosion sensor is described that uses electrochemical impedance spectroscopy (EIS, also known as AC impedance) to detect coating degradation and corrosion of coated and...
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6033554 |
Corrosion resistance test process for test material comprised of metal blank and coating film
A process for promoting corrosion of a test material, is provided including the steps of immersing, in an electrolytic liquid, a test material which is comprised of a metal blank and a coating film...
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5972198 |
Corrosion resistance test process for article formed of metal material and coating
It is an object of the present invention to provide a corrosion resistance test process, wherein the estimation of the corrosion resistance of an article formed of a metal material and a coating...
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5896034 |
Method and apparatus for detecting and monitoring corrosion
Corrosion is monitored by making a resistance measurement between a contact and an uncorroded or relatively uncorroded portion of the article to be monitored. Changes in the resistance measured are...
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5792337 |
Method and apparatus for detection of corrosion
A method and apparatus for sensing corrosion are provided in which an interrogation unit (14) transmits interrogation pulses and receives responses. A plurality of corrosion sensors (12) are...
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5746905 |
Coating evaluation system
The organic coating deposited on a metallic substrate is quantitatively euated by measurement of electrical signals through an electrochemical cell having an electrode separated from the deposited...
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5698085 |
Coating analysis apparatus
A coating analysis apparatus is suitable for analyzing four physical properties including the internal stress of a coating, the thickness of a coating, the current efficiency of electroplating and...
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5676820 |
Remote electrochemical sensor
An electrochemical sensor for remote detection, particularly useful for metal contaminants and organic or other compounds. The sensor circumvents technical difficulties that previously prevented...
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5529668 |
Detection of potential for corrosion of steel reinforced composite pipe
This method and apparatus detects the potential for corrosion of pipes fabricated out of conductive material embedded in non-conductive material, due to contact between a conductive medium foreign...
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5466349 |
Potentiometric evaluation of substrate oxidation and coating porosity
A fast, nondestructive, and easy to perform method of Potentiometric Evaluation of Substrate Oxidation ("PESO") is provided. A coated part to be analyzed is placed in contact with an electrolytic...
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5445719 |
Corrosion control of dissimilar metals
A corrosion inhibiting system for protecting joined dissimilar metals which are contacted by an electrolyte includes an anode electrode located in the electrolyte and adjacent to the less noble...
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5404104 |
Device and method for monitoring and locating defects in, and detachment of, the protective covering of underground or immersed metal structures or pipelines
A method for monitoring the state of, and for locating any detachment of, the protective covering of immersed or buried pipelines or other metal structures subjected to cathodic protection with...
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5389216 |
Method for active corrosion analysis
A method, for measuring the parameters of cathodic protection of the structures which are protected by electrolysis or by sacrificial anodes, comprises fixed programs for executing data acquisition...
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5370776 |
Electrochemical impedance spectroscopy method for evaluating corrosion inhibitor performance
A simple, expedient method for measuring the effectiveness of a corrosion inhibitor provided to a metallic surface by a surface layer, wherein the layer is formed by use of the corrosion inhibitor...
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5318678 |
Method and apparatus for analyzing the state of protection against corrosion of a work under cathodic protection
A study is made of the changeover time of the voltage between an electrode and a metal work piece buried in the ground and protected against corrosion by an electric current. For this study, it is...
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5286357 |
Corrosion sensors
A corrosion sensor (1), apparatus for detecting corrosion of a surface incorporating the sensor, a structural assembly (1,21) incorporating the sensor and method for detecting corrosion of a...
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5241301 |
Device and method for real-time monitoring of accidental damage to the protective covering of underground or immersed metal structures or pipelines
A method for monitoring damage to the protective covering of immersed or underground metal structures subjected to cathodic protection, based on the electrical resistance offered by said covering,...
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5171517 |
Method for monitoring corrosion on a member in a nuclear reactor core
An apparatus and method for monitoring corrosion to members within the core of a nuclear reactor, particularly fuel rod cladding. A sensor means is submerged inside the core of a nuclear reactor...
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5151163 |
Electrochemical noise measurement technique for the determination of aluminum alloy pit initiation rates
A technique is disclosed for using electrochemical noise (ECN) to charactze halide pitting reactions on a high strength aluminum alloy. ECN signals resulting from the pitting interaction of an...
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4958130 |
Evaluation method of corrosion of steel material embedded in concrete
An evaluation method of corrosion of a steel material in a concrete. The evaluation is made by use of three parameters, i.e., the corrosion potential, the polarization resistance and the concrete...
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4950453 |
Inhibiting corrosion by water
There is disclosed a method for the protection of metal surfaces against corrosion by the formation of a passivating coating of zinc silicate on the surfaces of the metals exposed to the water. The...
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4942354 |
Process for monitoring the effectiveness of repairs made to zones of reinforced concrete structures
A process is described which makes it possible to locate, on the surface, those zones of reinforced concrete structures which have been damaged or are liable to be damaged by corrosion of the metal...
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4927503 |
Method for assessment of corrosion activity in reinforced concrete
The probe is a nondestructive testing device for locating and measuring corrosion activity in reinforced concrete structures by direct detection of electrochemical current flow. The device consists...
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4863571 |
Method of testing for corrosion
The invention relates to a method for simulating and determining the corrosion behavior of an electrically conducting element (2) when said element is embedded in a polymer matrix. The corrosion is...
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4826577 |
Control system for electrochemical protection on submersible metal structures
A method and device for automatic surveillance of electrochemical protection on submersible metal structures. The difference in electric potential between the steel structure and at least one...
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4623434 |
Method of determining cathodic corrosion and displaying
The present invention relates to a method of representing corrosion occurring in the reinforced concrete structure and the resultant representation. The representation comprises a display of...
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4611175 |
Pipe corrosion monitor
Method and means for determining the corrosion status of a coated undergrd metallic object without the necessity of excavation. An electrical charge is produced on an area of the pipe, and the rate...
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4504365 |
Non-destructive cathodic disbondment testing of pipewrap coatings
A method and apparatus herein is disclosed that consists of establishing and equilibrating a circuit path through a working test pipe electrode and a counter electrode in an electrolyte fluid in...
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4351703 |
Cathodic protection monitoring
Cathodic protection monitoring of large metallic structures receiving cathodic current from a remote anodic electrode. Exposed to the cathodic current, closely adjacent the metallic structure, is a...
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4294667 |
Corrosion evaluation testing method of coated metallic material and apparatus employed therefor
A method for obtaining electrochemical information significant for corrosion evaluations of a coated metallic material and an apparatus for automatically performing the method. The electrochemical...
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4278508 |
Method of detecting a cathodic corrosion site on a metallized substrate
A method of detecting a cathodic corrosion site on a metallized substrate comprises depositing molecules of a pH sensitive fluorescent dye adjacent a metallic surface of the substrate, the metallic...
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4266187 |
Method and apparatus for measuring effectiveness of a corrosion inhibitor
A simple, low cost test instrument for measuring effectiveness of a corrosion inhibiting film. It employs solid state integrated circuits and applies an AC signal across the film. The amplitude of...
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4217180 |
Method of determining susceptibility of alloys to stress corrosion cracking
Accelerated testing method for determining the susceptibility of alloys to stress corrosion cracking. Test parts are anodized to form an oxide coating thereon. The anodized parts are deformed to a...
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4214951 |
Method and apparatus for determining critical temperatures for corrosion
The temperature of a corrosive electrolyte is changed in steps, and the critical temperature of corrosion of a test material is measured in terms of the temperature at which the current or voltage...
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4169768 |
Polarization evaluation of metal degradation processes
An electrochemical technique and device for estimating absolute rates of metal degradation through evaluation of the stability of petroleum film at an interface such as a metal/petroleum...
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4095176 |
Method and apparatus for evaluating corrosion protection
A method and apparatus for evaluating the corrosion protection that will be provided to a metallic surface by a surface layer. The layer is formed by use of corrosion inhibitors in a corrosive fluid.
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4080565 |
Method for measuring the polarization potential of metal structures located in an aggressive medium in a current field and arrangement for execution of this method
A method and apparatus for measuring the polarization potential of anodically protected metal structures in moist soil in a current field utilizes auxiliary electrodes and a reference electrode...
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