Measuring and testing – Embrittlement or erosion
Patent
1998-05-01
2000-04-25
Larkin, Daniel S.
Measuring and testing
Embrittlement or erosion
2057775, G01N 1700, G01N 2726
Patent
active
060530359
ABSTRACT:
A method for evaluating material is carried out by making current measurements in an electrolyte positioned between a sensor and a material to be evaluated. The sensor has a substrate and a sensor surface. A light source is disposed in a spaced relationship with the substrate of the sensor. An electrolyte such as a gas or a solution is positioned to contact the sensor surface, and a material to be evaluated is positioned to contact the electrolyte, such that the electrolyte is positioned between the sensor and the material to be evaluated. A change in a property of the electrolyte, for example, pH, is caused by irradiating the sensor with the light beam. By generating a current in the substrate and then measuring the current, the pH of the electrolyte may be determined.
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Nakao Motoi
Nomura Satoshi
Takamatsu Shuji
Larkin Daniel S.
Politzer Jay L.
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