The Use of Radioisotopic Methods to Characterize Metal Foil Monolith Catalytic Converters 860567
Radioisotopic methods have been applied to nondestructive measurements on experimental automotive catalytic converters. These converters consist of thin corrugated metal foil which supports an alumina coating impregnated with noble metals. A radiogauging system, using γ radiation from a gadolinium-153 source, was developed to determine the total quantity and distribution of alumina coating applied to the foil substrate. The radiogauging apparatus was also used to provide axial and radial profiles of lead deposited in the catalytic converter when leaded fuel was used. During dynamometer aging, iron-59 was used as a radiotracer in the alumina to monitor the coating attrition as a function of operating time. These studies demonstrate the capability of radiotracer and radiogauging techniques for rapid, nondestructive measurements on prototype catalytic converters during performance testing.
Citation: Schneider, E. and Vaneman, G., "The Use of Radioisotopic Methods to Characterize Metal Foil Monolith Catalytic Converters," SAE Technical Paper 860567, 1986, https://doi.org/10.4271/860567. Download Citation
Author(s):
Eric W. Schneider, Gerald L. Vaneman
Affiliated:
General Motors Research Laboratories, General Motors Corp., Warren, MI
Pages: 12
Event:
SAE International Congress and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
SAE 1986 Transactions - Fuels and Lubricants-V95-7
Related Topics:
Catalytic converters
Performance tests
Metals
Coatings, colorants, and finishes
Radiation
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