Corrosion testing method and corrosion testing device
US11391665B2 · kind B2 · utility
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1References
13Claims
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Key dates
| Filing date | Apr 5, 2019 |
| Grant date | Jul 19, 2022 |
| Priority date | — |
| Expiry date | Aug 14, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N17/006
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A painting fiber probe having a measurement surface on which a coating film is formed with the same painting specification as that of a sample (painted steel sheet) is placed in a test tank together with the sample. A cycle consisting of three steps of saline water spraying, drying and wetting is repeated on the sample and the painting fiber probe. In the drying step of the cycle, absorbance at a specific wavelength of the coating film formed on the painting fiber probe is measured at a regular interval and drying is ended when the measured absorbance satisfies a predetermined condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.