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7776606 |
Processes to create discrete corrosion defects on substrates and establish corrosion NDI test standards
Methods and apparatuses are provided for creation of discrete corrosion defects with a wide range of diameter to depth aspect ratios for painted test standards. Also provided are methods for use of...
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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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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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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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7182852 |
Cryogenic tank testing method including cathodic protection
The present invention provides a method of testing a cryogenic metal tank before it is put into service, in which said method said tank (1) is filled with water and appropriate measurements are...
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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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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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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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6517699 |
Method for producing polysulfides by means of electrolytic oxidation
The present invention has an object to obtain a cooking liquor containing polysulfide-sulfur at a high concentration by minimizing by-production of thiosulfate ions. The present invention is a...
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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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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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6258253 |
Vapor corrosion cell and method of using same
The present invention provides a vapor corrosion cell for a real-time and quantitative measurement of corrosion of conductive materials in atmospheres containing chemically reactive gases and water...
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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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5785842 |
Corrosion protection monitoring and adjustment system
A system for monitoring and alternatively adjusting the electrical energy input and output of remotely located corrosion protection rectifiers on a section of a longer pipeline includes three...
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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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5188715 |
Condensate corrosion sensor
An apparatus and method for measuring metal corrosion rate in solutions, including solutions having low ionic strength. Three electrodes including a counterelectrode, a reference electrode, and a...
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5178822 |
Steam generator corrosion monitoring system and method
In combination with a steam generator having a plurality of generator tube support plates, each generator tube support plate having a plurality of openings and a plurality of generator tubes, each...
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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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4994159 |
Method and apparatus for measuring corrosion beneath thin films
A method and an apparatus are provided which can quantitatively measure the orrosion-inhibiting ability of thin films of materials such as lubricants. A galvanic cell is created on a sensitive...
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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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4789434 |
Method and apparatus for measuring corrosion current induced by microbiological activities
A corrosion measuring device is disclosed for measuring microbiologically duced corrosion using galvanically coupled electrodes exposed in an electrolytically continuous, biologically separated...
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