Corrosion Analysis Electrode with Light-Transmissive Gel

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Solution Overview

Problem

Conventional real-time analysis methods are unable to effectively analyze soil corrosion of underground buried metal materials due to the inability to visually observe the metal surface, which leads to underestimation of localized corrosion risks and potential facility failures.

Innovation Solution

A corrosion analysis device and method utilizing an electrode with light transmissive particles and gelation substance to simulate soil conditions, allowing for direct in situ observation of the metal surface and simultaneous electrochemical measurement to determine corrosion rates.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If statistical techniques are used to predict deterioration, then average deterioration can be estimated, but localized corrosion risks are underestimated due to lack of inspection data

Engineering Contradiction:
Improvedeterioration estimation accuracyVSAvoidinspection data availability
Core Design Contradiction:
Measurement precisionVSLoss of information

Solution Approach 1:

The patent introduces an intermediary measurement system (electrode with light-transmissive particles and gelation substance) that enables indirect observation of corrosion processes. This intermediary allows statistical techniques to work effectively by providing the necessary inspection data that would otherwise be unavailable for buried facilities.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If conventional real-time analysis methods are used, then corrosion can be monitored in aqueous environments, but soil corrosion cannot be analyzed due to inability to visually observe metal surfaces

Engineering Contradiction:
Improvecorrosion analysis capabilityVSAvoidmetal surface observability
Core Design Contradiction:
Ease of operationVSDifficulty of detecting and measuring

Solution Approach 1:

The patent employs a gelation substance portion that acts as a flexible, transparent medium allowing optical observation of the metal surface while maintaining contact with soil particles. This thin film approach enables visual detection of corrosion without requiring direct line-of-sight access to the buried metal surface.

Inventive Principle:
Principle #30Flexible shells and thin films

Solution Approach 2:

The light-transmissive particles and gelation substance serve as intermediaries between the soil environment and the observation system, enabling optical detection of corrosion processes that would otherwise be invisible beneath the soil surface.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Measurement precision

If electrochemical measurement is performed on buried facilities, then average corrosion rate can be obtained, but localized corrosion regions cannot be identified

Engineering Contradiction:
Improvecorrosion rate measurementVSAvoidspatial corrosion distribution
Core Design Contradiction:
Measurement precisionVSLoss of information

Solution Approach 1:

The patent segments the measurement approach by combining electrochemical measurement (for average corrosion rate) with optical observation through the transparent medium (for spatial distribution). This segmentation allows simultaneous acquisition of both bulk and localized corrosion information.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent merges two measurement techniques - electrochemical measurement and optical observation - into a single integrated system. The electrode structure combines both measurement modalities, allowing simultaneous detection of average corrosion rate and localized corrosion regions.

Inventive Principle:
Principle #5Merging (Combining)

4Difficulty of detecting and measuring

If direct visual examination is performed on buried facilities, then corrosion surfaces can be observed, but inspection is impossible due to soil coverage

Engineering Contradiction:
Improvecorrosion surface detectabilityVSAvoidsoil particle obstruction
Core Design Contradiction:
Difficulty of detecting and measuringVSObject-affected harmful factors

Solution Approach 1:

The gelation substance portion creates a transparent window through the soil matrix, allowing direct visual examination of corrosion surfaces without removing soil coverage. This thin film approach eliminates the obstructing effect of soil particles while maintaining the buried condition.

Inventive Principle:
Principle #30Flexible shells and thin films

Solution Approach 2:

The light-transmissive particles create an optical copy or window into the buried environment, allowing observation of corrosion surfaces as if they were exposed, without actually exposing them to the atmosphere.

Inventive Principle:
Principle #26Copying

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables accurate real-time analysis of soil corrosion, identifying active and inactive regions on the metal surface, thereby enhancing the reliability of corrosion evaluation and preventing potential facility failures.

Implementation Method 1

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

Methodology Applied
Scientific EffectLight transmission: Light

Implementation Method 2

a conduction portion that secures electric conduction with the metal portion

Methodology Applied
Scientific EffectElectric conduction: Conduction (electrical)

Implementation Method 3

simultaneous electrochemical measurement to determine corrosion rates

Methodology Applied
Scientific EffectElectrochemical measurement: Electrolysis

Data Source

PatentUS11821817B2Electrode, corrosion analysis device, and corrosion analysis method
Publication Date: 2023.11.21 NIPPON TELEGRAPH & TELEPHONE CORP
  • US11821817B2 patent drawing
  • US11821817B2 patent drawing
  • US11821817B2 patent drawing

AI summary

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.