Artigo Acesso aberto Revisado por pares

RIR - Measurement and Use in Quantitative XRD

1988; Cambridge University Press; Volume: 3; Issue: 2 Linguagem: Inglês

10.1017/s0885715600013257

ISSN

1945-7413

Autores

C. R. Hubbard, Robert L. Snyder,

Tópico(s)

Microstructure and Mechanical Properties of Steels

Resumo

Abstract The Reference Intensity Ratio (RIR) is a general, instrument-independent constant for use in quantitative phase analysis by the X-ray powder diffraction internal standard method. When the reference standard is corundum, RIR is known as I/I c ; These constants are collected in the Powder Diffraction File (1987), can be calculated, and can be measured. Recommended methods for accurate measurement of RIR constants are presented, and methods of using these constants for quantitative analysis are discussed. The numerous, complex constants in Copeland and Bragg's method introduced to account for superimposed lines can be simply expressed in terms of RIR constants and relative intensities. This formalism also permits introduction of constraints and supplemental equations based on elemental analysis.

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