Quantitative Analysis of Platelike Pigments by X-Ray Diffraction

1982 ◽  
Vol 26 ◽  
pp. 129-135
Author(s):  
P. Kamarchik ◽  
J. Ratliff
Keyword(s):  
Quantitative Analysis ◽  
Retained Austenite ◽  
Pigment Composition ◽  
X Ray Diffraction ◽  
X Ray ◽  
Qualitative And Quantitative ◽  
Degree Of Orientation ◽  
Paint Films ◽  
Marked Tendency

X-ray diffraction has been shown to provide an accurate qualitative and quantitative determination of the pigment composition of paint films. This analysis, however, is frequently complicated by the presence of pigments with plate-like crystallites which show a marked tendency to orient in preferred directions in drying paint films. The variability in the degree of orientation causes line intensity variations not attributable to pigment concentration.A technique based on a summation of the intensities of many lines has been used to correct for the effects of preferred orientation in the analysis of retained austenite in certain steels. This method is shown to be applicable to the quantitative analysis of mica in paint films.

X-Ray Fluorescence in Cotton Modification Research

1964 ◽  
Vol 8 ◽  
pp. 456-461
Author(s):  
Donald Mitcham ◽  
Biagio Piccolo ◽  
Verne W. Tripp ◽  
Robert T. O’Connor
Keyword(s):  
Quantitative Analysis ◽  
Cotton Textile ◽  
Qualitative And Quantitative Analysis ◽  
X Ray ◽  
Textile Materials ◽  
Qualitative And Quantitative ◽  
Chemically Modified ◽  
Elapsed Time

AbstractThe application of X-ray fluorescence to the qualitative and quantitative analysis of chemically modified cotton textile materials is described. The scope and flexibility of the technique have permitted the determination of more than 20 elements with, greatly reduced elapsed time compared with the corresponding spectroscopic or wet methods. Precautions to be observed in preparing standards are discussed. Results of the analysis of typical modifications and their significance in the development of cottons for specific uses are described.

Qualitative and Quantitative Analysis of Stacking Disorder in α-and β-SiC by X-ray Diffraction and Structure Modeling

1995 ◽  
Vol 410 ◽  
Author(s):  
Bogdan Palosz ◽  
Svetlana Stel'makh ◽  
Stanislaw Gierlotka
Keyword(s):  
Quantitative Analysis ◽  
Model Parameters ◽  
Qualitative And Quantitative Analysis ◽  
X Ray Diffraction ◽  
X Ray ◽  
Qualitative And Quantitative ◽  
Poisson Function ◽  
Diffraction Patterns ◽  
Computer Generation ◽  
Stacking Disorder

ABSTRACTA method of analysis of disordering in α- and β-SiC polycrystals by numerical modeling, and a simulation of X-ray diffraction profiles are presented. The diffraction patterns of nonperiodic structures were simulated for models of 2000 layer fragments of the structure. Computer generation of the models was based on the Poisson function describing the size distribution of the domains of basic polytypes and faults. The models were quantified by a set of input probability parameters describing relative frequencies of the occurrence of the domains of polytypes and faults. Implementation of a correlation parameter that characterizes coherence of sequential domains of a given polytype assures a good reproducibility of the simulated diffraction profiles obtained for the same set of the model parameters. Based on this method, a quantitative analysis of disordering in polycrystals of SiC annealed in the temperature range 1100–2200 °C was performed.

Determination of Nickel(II) Oxide in Ceramic Pigments by In Situ X-ray Diffraction Quantitative Analysis

1999 ◽  
Vol 82 (9) ◽  
pp. 2566-2568 ◽  
Author(s):  
Alessandro F. Gualtieri ◽  
Edoardo Mazzucato ◽  
Paolo Venturelli ◽  
Alberto Viani ◽  
Paolo Zannini ◽  
...  
Keyword(s):  
Quantitative Analysis ◽  
Ceramic Pigments ◽  
X Ray Diffraction ◽  
X Ray ◽  
Determination Of Nickel

Determination of low levels of retained austenite in low-carbon high-manganese steel using X-ray diffraction

2015 ◽  
Vol 628 ◽  
pp. 110-115 ◽  
Author(s):  
Helder Carvalho Ferreira ◽  
Francisco Jose Martins Boratto ◽  
Vicente Tadeu Lopes Buono
Keyword(s):  
Retained Austenite ◽  
Manganese Steel ◽  
Low Carbon ◽  
X Ray Diffraction ◽  
High Manganese ◽  
High Manganese Steel ◽  
X Ray ◽  
Low Levels

scholarly journals Quantitative Phase Analysis by X-ray Diffraction—Doping Methods and Applications

Crystals ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 27 ◽  
Author(s):  
Stanko Popović
Keyword(s):  
Quantitative Analysis ◽  
Phase Analysis ◽  
Powder Diffraction ◽  
Phase Fraction ◽  
Quantitative Phase Analysis ◽  
Intermetallic Alloys ◽  
X Ray Diffraction ◽  
X Ray ◽  
Quantitative Phase

X-ray powder diffraction is an ideal technique for the quantitative analysis of a multiphase sample. The intensities of diffraction lines of a phase in a multiphase sample are proportional to the phase fraction and the quantitative analysis can be obtained if the correction for the absorption of X-rays in the sample is performed. Simple procedures of quantitative X-ray diffraction phase analysis of a multiphase sample are presented. The matrix-flushing method, with the application of reference intensities, yields the relationship between the intensity and phase fraction free from the absorption effect, thus, shunting calibration curves or internal standard procedures. Special attention is paid to the doping methods: (i) simultaneous determination of the fractions of several phases using a single doping and (ii) determination of the fraction of the dominant phase. The conditions to minimize systematic errors are discussed. The problem of overlapping of diffraction lines can be overcome by combining the doping method (i) and the individual profile fitting method, thus performing the quantitative phase analysis without the reference to structural models of particular phases. Recent suggestions in quantitative phase analysis are quoted, e.g., in study of the decomposition of supersaturated solid solutions—intermetallic alloys. Round Robin on Quantitative Phase Analysis, organized by the IUCr Commission on Powder Diffraction, is discussed shortly. The doping methods have been applied in various studies, e.g., phase transitions in titanium dioxide, biomineralization processes, and phases in intermetallic oxide systems and intermetallic alloys.

Determination of Total Phosphate and Identification of Acid-Insolubles in Superphosphoric Acid

1969 ◽  
Vol 52 (3) ◽  
pp. 577-581
Author(s):  
A B Carel ◽  
D E Jordan
Keyword(s):  
Quantitative Analysis ◽  
Sample Preparation ◽  
X Ray Diffraction ◽  
Acid Base ◽  
Absorption Data ◽  
Digestion Procedure ◽  
X Ray ◽  
Iron Aluminum ◽  
Insoluble Material

Abstract Discrepancies in the analysis of superphosphoric acid for iron, aluminum, and phosphorus are found to be directly related to the digestion procedure used for sample preparation. Various acid digestions and combined acid-base digestion data are discussed. Chemical and atomic absorption data are combined to confirm the structure of the acid-insoluble material identified by X-ray diffraction analysis. Recommended digestion procedures are included for the quantitative analysis of superphosphoric acid for iron, aluminum, and phosphorus.

The Analysis and Composition Of Aluminum Corrosion Products

CORROSION ◽  
1960 ◽  
Vol 16 (4) ◽  
pp. 181t-187t ◽  
Author(s):  
Keyword(s):  
Sea Water ◽  
Analytical Data ◽  
Water Extract ◽  
Corrosion Products ◽  
Water Pipe ◽  
X Ray Diffraction ◽  
X Ray ◽  
Qualitative And Quantitative ◽  
Aluminum Corrosion

Abstract The various techniques applicable to investigation of aluminum corrosion products are discussed. Analytical procedures suitable for the determination of the various constituents in aluminum products are outlined. Methods reported include X-ray diffraction, X-ray fluorescense, differential thermal analysis,, electrographic methods, spectrographs analysis, microscopic examination, and qualitative and quantitative tests. Analytical data are presented for a number of corrosion products investigated. A study is made of corrosion products found in the following environments: fresh water, sea water and the atmosphere. Other topics discussed include presence of copper and mercury in aluminum corrosion products, pH of surface and water extract, and effect of chlorides. Data reported include effect of sea velocity on composition of corrosion products formed in 99.5 percent aluminum tubing, constituent/alumina ratios for sea water pipe products and composition of corrosion products of different alloys exposed in various industrial atmospheres. 3.4.3

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