Abstract:
The surface contact resistance value and measurement method of chemical conductive oxide film used for surface treatment of aluminum and aluminum alloys parts in military electronic equipment must comply with the provisions of military standard of electronic industry of the People’s Republic of China SJ 20813—2002 Specification for Chemical Conversion Film on Aluminum and Aluminum Alloys. A measuring device for the surface contact resistance of conductive oxide film is developed with the standard measurement method in this paper in order to solve the test and measurement problem of the surface contact resistance of conductive oxide film in production. The structure and work principle of the measuring device are described and the measurement stability of the device is analyzed and verified. The result shows that the performance of the measuring device is stable and meets the requirements of product quality inspection.