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Radiographic Test for Electrodeposit Porosity.
Cramer-SD; Cammarota-VA Jr.; Schlain-D
NTIS: PB 194 078 :17 pages
A nondestructive procedure for measuring electrodeposit porosity has been developed which records the location and number of deposit defects including pores, pits, and voids. The procedure involves the passage of an x-ray beam through the deposit-substrate system onto suitable film. The defects are recorded as images on the film. Variables studied included intensity and spectra of the x-ray beam, composition and thickness of deposit and substrate, film type and developing procedure, and limits for detecting defects. At an x-ray tube voltage of 40-kv, pores several mils thick were easily detected in copper-nickel specimens more than 20 mils thick. To illustrate the utility of the procedure, the effect of substrate oxidation and of current density on electrodeposit porosity was briefly studied.
IH; Report of Investigation;
NTIS Accession No.
NTIS: PB 194 078
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division