The Aging of Solder Standards

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Abstract:

Standards, used for process control, x-ray fluorescent analysis of solder, age in a manner which changes their analytical values. If uncontrolled, erroneous analyses result when newly prepared samples are analyzed using aged standards. This error can be as much as 1 wt% after eight months aging. The change in the standards is metallurgical and has an effect analogous to that of particle size on the x-ray intensities from the standards.

Keywords: Methods, analytical; X-ray fluorescence

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/000370270774372010

Affiliations: IBM Bington, Components Division, Essex Junction, Vermont 05452

Publication date: March 1, 1970

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