Ta. Dang et C. Hilliard, FACTORS INFLUENCING THE QUANTITATIVE COMPOSITIONAL ANALYSIS OF POWDERS IN SPUTTERED NEUTRAL MASS-SPECTROMETRY, Journal of vacuum science & technology. A. Vacuum, surfaces, and films, 12(4), 1994, pp. 2348-2351
Citations number
14
Categorie Soggetti
Physics, Applied","Materials Science, Coatings & Films
Sputtered neutral mass spectrometry (SNMS), which decouples ionization
from sputtering, has greatly reduced the effect of the sample matrix.
Its application to the quantification of powders has, however, result
ed in many other uncertainties. An investigation of artifacts associat
ed with the quantification of powders was carried out using W and Cr p
owders and several binder systems including Ag, Au, and C. The signal
intensity detected in SNMS was significantly affected by the powder's
particle size and its preparation for analysis. The binder used in for
ming a pellet caused spectral interference and coating artifacts. Pres
sing powders onto In foil eliminated these problems, but did not resul
t in a consistent foil coverage. Regardless of the preparation method,
the particle size of powders had a strong influence on the intensity
of the detected signal. The surface area of the powders can be used to
project the intensity of the signal measured.