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Preparation and Certification of K-411 Glass Microspheres

Published online by Cambridge University Press:  07 August 2002

Ryna B. Marinenko ,
Sonya Roberson ,
John S. Small ,
Barbara B. Thorne ,
Douglas Blackburn ,
Dale Kauffman  and
Stefan Leigh
Ryna B. Marinenko*
Affiliation:
Surface and Microanalysis Science Division, National Institute of Standards and Technology (NIST), 100 Bureau Drive, MS 8371, Gaithersburg, MD 20899
Sonya Roberson
Affiliation:
Surface and Microanalysis Science Division, National Institute of Standards and Technology (NIST), 100 Bureau Drive, MS 8371, Gaithersburg, MD 20899
John S. Small
Affiliation:
Surface and Microanalysis Science Division, National Institute of Standards and Technology (NIST), 100 Bureau Drive, MS 8371, Gaithersburg, MD 20899
Barbara B. Thorne
Affiliation:
Surface and Microanalysis Science Division, National Institute of Standards and Technology (NIST), 100 Bureau Drive, MS 8371, Gaithersburg, MD 20899
Douglas Blackburn
Affiliation:
Ceramics Division, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, MD 20899
Dale Kauffman
Affiliation:
Ceramics Division, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, MD 20899
Stefan Leigh
Affiliation:
Statistical Engineering Division, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, MD 20899
*
*Corresponding author
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Abstract

The production and characterization of NBS K-411 glass microspheres in the 2–40 μm range for certification as NIST Standard Reference Material® 2066 (SRM®) are described. Quantitative analysis and heterogeneity testing of the microspheres were done with an electron probe microanalyzer-X-ray energy dispersive spectrometry (EPMA-EDS) automated particle analysis procedure. Results for the trimmed and normalized data produced mean compositions for the elements Mg, Si, Ca, Fe, and O (calculated from stoichiometry) that are in good agreement with the certified values for the K-411 bulk glass (NBS SRM 470 Glasses for Mineral Analysis), but with uncertainties about twice as large as those for the bulk material. Differences from the bulk are attributable to microsphere geometry as well as mass and size effects.

Keywords

automated electron probe microanalyzer particle analysiscertified standardelectron probe microanalysisglass microspheresNIST Standard Reference Materialparticle analysisparticle standardStandard Reference Materials®
Type
Research Article
Information
Microscopy and Microanalysis , Volume 6 , Issue 6 , November 2000 , pp. 542 - 550
Copyright
Copyright © Microscopy Society of America 2000

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