Title:
CORROSION TESTING METHOD AND CORROSION TESTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/203028
Kind Code:
A1
Abstract:
The objective of the present invention is to reduce the time required for corrosion testing of a coating material.
A coated fiber probe 115 on a measuring surface of which a coating film has been formed using the same coating specification as a sample 116 (coated steel plate) is installed in a testing bath 11 together with the sample 116. The sample 116 and the coated fiber probe 115 are subjected repeatedly to a cycle comprising three steps, namely salt water spraying, drying, and wetting. In the drying step of this cycle, the light absorbency at a specific wavelength of the coating film formed on the coated fiber probe 115 is measured at fixed intervals, and when the measured light absorbency satisfies a prescribed condition, the drying ends. For example, the drying ends when the measured value of the light absorbency falls to or below a prescribed value, or the drying ends when an amount of change in the measured light absorbency per unit time falls to or below a prescribed value.
Inventors:
MIWA TAKASHI (JP)
ISHII AZUSA (JP)
ISHII AZUSA (JP)
Application Number:
PCT/JP2019/015140
Publication Date:
October 24, 2019
Filing Date:
April 05, 2019
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
G01N17/00
Foreign References:
| JP2017194377A | 2017-10-26 | |||
| JP2016188849A | 2016-11-04 | |||
| JP2008185502A | 2008-08-14 | |||
| JPH05322741A | 1993-12-07 |
Other References:
MIWA TAKASHI: "Accelerated Corrosion Test for Evaluating the Corrosion Resistance of Coatings", NTT TECHNICAL JOURNAL, November 2017 (2017-11-01), pages 15 - 18, XP055645011
Attorney, Agent or Firm:
YAMAKAWA, Shigeki et al. (JP)
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