Erich H. Kisi and Christopher J. Howard
- Published in print:
- 2008
- Published Online:
- January 2009
- ISBN:
- 9780198515944
- eISBN:
- 9780191705663
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:oso/9780198515944.003.0008
- Subject:
- Physics, Condensed Matter Physics / Materials
The intensities of the peaks in a powder diffraction pattern are shown to scale with the mass of contributing material. Thus, for a sample comprising several phases, the mass fractions of the ...
More
The intensities of the peaks in a powder diffraction pattern are shown to scale with the mass of contributing material. Thus, for a sample comprising several phases, the mass fractions of the different phases can be obtained, at least in principle, from the ratios of intensities of peaks from different phases. Individual peak methods, such as the polymorph method, are described. There is a particularly simple connection between the mass of a phase and the corresponding scale factor as obtained in a multiphase Rietveld method analysis, and this is finding increasing application in quantitative phase analysis. The relative merits of X-rays and neutrons for phase analysis, analysis with or without standards, and the estimation of errors, are discussed. Applications to magnesia-partially stabilised zirconia (Mg-PSZ) and studies of the synthesis in situ of Ti3SiC2 are described in detail.Less
The intensities of the peaks in a powder diffraction pattern are shown to scale with the mass of contributing material. Thus, for a sample comprising several phases, the mass fractions of the different phases can be obtained, at least in principle, from the ratios of intensities of peaks from different phases. Individual peak methods, such as the polymorph method, are described. There is a particularly simple connection between the mass of a phase and the corresponding scale factor as obtained in a multiphase Rietveld method analysis, and this is finding increasing application in quantitative phase analysis. The relative merits of X-rays and neutrons for phase analysis, analysis with or without standards, and the estimation of errors, are discussed. Applications to magnesia-partially stabilised zirconia (Mg-PSZ) and studies of the synthesis in situ of Ti3SiC2 are described in detail.
Erich H. Kisi and Christopher J. Howard
- Published in print:
- 2008
- Published Online:
- January 2009
- ISBN:
- 9780198515944
- eISBN:
- 9780191705663
- Item type:
- book
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:oso/9780198515944.001.0001
- Subject:
- Physics, Condensed Matter Physics / Materials
This book covers the theory, practicalities, and the extensive applications of neutron powder diffraction in materials science, physics, chemistry, mineralogy, and engineering. Various highlight ...
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This book covers the theory, practicalities, and the extensive applications of neutron powder diffraction in materials science, physics, chemistry, mineralogy, and engineering. Various highlight applications of neutron powder diffraction are outlined in the introduction, then the theory is developed and instrumentation described sufficient for a return to the applications. The book covers the use of neutron powder diffraction in the solution (hard) and refinement (more straightforward) of crystal and magnetic structures, applications of powder diffraction in quantitative phase analysis, extraction of microstructural information from powder diffraction patterns, and the applications of neutron diffraction in studies of elastic properties and for the measurement of residual stress. Additional theory to underpin these various applications is developed as required.Less
This book covers the theory, practicalities, and the extensive applications of neutron powder diffraction in materials science, physics, chemistry, mineralogy, and engineering. Various highlight applications of neutron powder diffraction are outlined in the introduction, then the theory is developed and instrumentation described sufficient for a return to the applications. The book covers the use of neutron powder diffraction in the solution (hard) and refinement (more straightforward) of crystal and magnetic structures, applications of powder diffraction in quantitative phase analysis, extraction of microstructural information from powder diffraction patterns, and the applications of neutron diffraction in studies of elastic properties and for the measurement of residual stress. Additional theory to underpin these various applications is developed as required.
