A test device and method for top-of-the-line corrosion (TLC) of a high-temperature high-pressure wet gas pipeline. The device mainly includes: a metal top cap, a metal reaction cylinder, a first thermometer, a second thermometer, a plastic transparent measuring cylinder, a condensed water collection tube, an atomic spectrometer, a third thermometer, a rubber seal cover, a condensate droplet, a threaded hole, a condensation chamber, a pipeline sample, a temperature measuring hole, and a 30-degree tilt angle. The device and method can effectively simulate TLC of a wet gas pipeline under a high-temperature high-pressure environment. The device and method can test the high-temperature high-pressure TLC of the wet gas pipeline under different temperature differences (between a surface temperature of the pipeline and a gas temperature) and various corrosion media.

The present disclosure provides a sensor system including one or more sensors having a first container fluidly coupled to a second container, the second container being configured to receive a conductive media from the first container. A first movable element is slidingly engaged with the first container to cause the second container to receive the conductive media from the first container. A first electrode is positioned in the first cavity and electrically coupled to the conductive media. In some examples, a second electrode is electrically coupled to the first electrode and the conductive media. The sensor deposits the conductive media on a working electrode to form an electrochemical cell and obtain one or more material properties of the working electrode. In some examples, the sensor system includes an array of sensors which deposit the conducive media in multiple locations on a working electrode to generate a material property map.

Systems and methods for detecting corrosion in pipes are disclosed herein. In one embodiment, an apparatus for detecting corrosion in an object includes an electromagnetic acoustic transducer (EMAT) having a ferromagnetic core and a plurality of permanent magnets arranged peripherally around the ferromagnetic core. The permanent magnets are arranged to produce a magnetic field through the ferromagnetic core. The apparatus also includes a coil between the ferromagnetic core and the object.

Provided is a measurement method for measuring a size of expansion of a surface treatment film occurred in a coated metal material that includes a metal base and the surface treatment film provided on the metal base. The measurement method includes the steps of disposing a water-containing material to be in contact with the expansion and an electrode to be in contact with the water-containing material, and electrically connecting between the electrode and the metal base with an external circuit; applying, with the external circuit, a constant voltage between the electrode and the metal base, as a cathode and an anode, respectively, and measuring a current value flowing therebetween; and calculating a size of the expansion, based on the current value measured and a correlation between the current value and the size of the expansion, the correlation being determined on an exploratory basis in advance.

Provided is a measurement method for measuring a size of a damaged portion in a coated metal material that includes a metal base and surface treatment film provided on the metal base, and reaching the metal base through the surface treatment film. The measurement method includes the steps of disposing a water-containing material to be in contact with the damaged portion and an electrode to be in contact with the water-containing material, and electrically connecting between the electrode and the metal base with an external circuit; applying, with the external circuit, a constant voltage between the electrode and the metal base, as a cathode and an anode, respectively, and measuring a current value flowing therebetween; and calculating a size of the damaged portion, based on the current value measured and a correlation between the current value and the size of the damaged portion, determined on an exploratory basis in advance.

An electrode portion device is for use in a corrosion resistance test for a coated metal material that includes a metal base and a surface treatment film on the metal base material. The electrode portion device includes: a container body that is tubular and disposed on the surface treatment film, and configured to hold a water-containing material that is in contact with the surface treatment film inside; a lid for closing an upper opening of the container body; a through hole provided in an upper side wall of the container body; and an electrode in contact with the water-containing material contained inside the container body.

A damaged portion treatment method is for treating one or more damaged portions formed in a coated metal material that includes a metal base and a surface treatment film provided on the metal base, the one or more damaged portions reaching the metal base through the surface treatment film. The damaged portion treatment method includes the steps of: disposing a water-containing material to be in contact with one or two out of the damaged portions and one or two electrodes to be in contact with the water-containing material, and electrically connecting, with an external circuit, between the electrode and the metal base, or between the two electrodes; and supplying a current between the electrode and the metal base, or between the two electrodes while alternately switching a direction of the current flowing through the external circuit, with the external circuit.

To provide a technology capable of analyzing soil corrosion of an underground buried metal material. There is provided an electrode for analyzing corrosion of a buried metal material in real time, the electrode including: a metal portion composed of a metal material; a metal fixation portion covering and fixing the metal portion except on an exposed surface thereof; a plurality of particles arranged so as to be in contact with the exposed surface; a gelation substance portion covering the plurality of particles and being in close contact with the exposed surface and the metal fixation portion; and a conduction portion that secures electric conduction with the metal portion, wherein the plurality of particles and the gelation substance portion transmit light.

A sensor arrangement used for measuring fouling and/or erosion in a machine. A first piezoelectric transducer, a first plate and eventually a first support member form a first vibrating mass. After electrically stimulating the first piezoelectric transducer, the first vibrating mass starts vibrating mechanically and consequently the first piezoelectric transducer generates an electric resonance vibration; the electric resonance vibration is at a resonance frequency depending on the mass of the first vibrating mass. If the mass of the first vibrating mass changes due to fouling and/or erosion by a flow of working fluid in the machine, also the electric resonance vibration frequency changes; such vibration frequency change may be measured and the corresponding mass change may be determined by comparison with a vibration frequency of a second vibrating mass not exposed to the flow of working fluid in the machine.

A corrosion prediction device that predicts corrosion indicating the degree to which a metal will corrode in an environment, the device including a storage unit which stores a soil sample that simulates the environment and an electrode unit and has a function of repeatedly performing water supply and drainage with respect to the soil sample; the electrode unit including at least one type of metal pieces; a measurement unit that measures, based on change in water content in the environment in one cycle, a corrosion rate of the metal pieces or a value proportional to the corrosion rate of the metal pieces during the change; a calculation unit that integrates the corrosion rate or a value proportional to the corrosion rate over time and calculates an amount of corrosion or a value proportional to the amount of corrosion; and a prediction unit that determines a constant value of K of the power law and a constant value of n of the power law using a difference between the amounts of corrosion or the values proportional to the amounts of corrosion in different periods.