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Electrophoretic deposition for improved trace element homogeneity in silica reference materials

Journal Article · · Materials Letters
 [1];  [2];  [2];  [2];  [2];  [2]
  1. Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Univ. of California, Berkeley, CA (United States); Lawrence Livermore National Laboratory
  2. Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
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Spatially-resolved analysis requires homogeneous reference materials (RMs) to make reliable quantitative measurements. Here we previously developed an electrophoretic deposition (EPD) method for fabrication of glassy microanalytical RMs with superior platinum-group element homogeneity **[1], and now include further dopants. For 39 trace elements, we analyzed dopant homogeneity in sintered silica (SiO2) samples consolidated either mechanically by die-pressing (DP) or by EPD. A set of EPD and DP samples was made from each of two nanoparticle feedstocks produced by variations of the Stöber process **[2]. Spatially-resolved dopant distribution was characterized in all samples by laser-ablation inductively-coupled plasma mass spectrometry (LA-ICP-MS). In both sample sets, homogeneity of most trace elements was substantially improved by EPD relative to their DP counterpart.
Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE National Nuclear Security Administration (NNSA), Office of Defense Nuclear Nonproliferation
Contributing Organization:
Eurofins EAG Laboratories; UC Davis, Interdisciplinary Center for Plasma Mass Spectrometry
Grant/Contract Number:
AC52-07NA27344; NA0003996
OSTI ID:
2331212
Alternate ID(s):
OSTI ID: 2345979
Report Number(s):
LLNL--JRNL-863727; 20-ERD-021; DE-NA0003996; LLNL-CONF-850258
Journal Information:
Materials Letters, Journal Name: Materials Letters Vol. 361; ISSN 0167-577X
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (5)

Additive manufacturing of platinum group element (PGE) reference materials with a silica matrix journal February 2020
Controlled growth of monodisperse silica spheres in the micron size range journal January 1968
Unraveling the Growth Mechanism of Silica Particles in the Stöber Method: In Situ Seeded Growth Model journal May 2017
A History of the Development and Certification of NIST Glass SRMs 610-617 journal June 1998
A Study of the Adhesion of Electrophoretically Deposited Phosphors journal April 1998

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Related Subjects

36 MATERIALS SCIENCE
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
77 NANOSCIENCE AND NANOTECHNOLOGY
additive manufacturing
electrodeposition
nanoparticles