Accession Number : AD0430423


Title :   PROCEDURE IN CORRECTING FOR MATRIX EFFECTS IN FLUORESCENT X-RAY ANALYSIS, PART II,


Corporate Author : REDSTONE SCIENTIFIC INFORMATION CENTER REDSTONE ARSENAL ALA


Personal Author(s) : Sugimoto,Masakatsu


Report Date : 07 Feb 1964


Pagination or Media Count : 19


Abstract : The correction equation previously derived to correct for changes in composition of routinge samples, was elaborated upon to give more prac tical correction equations utilizing a slope correction or a parallel displacement of the calibration curve. These corrections were done by linear combination. By setting up the various correction factors, it is possible to analyze several kinds of steels with good accuracy without the need to construct several calibration curves. The following can be said on the results of this study: (i) Correction by parallel displacement was derived for cases where there were no great changes in sample composition. However, it was found to follow linearly changes in Cr content between 6-20 percent; (ii) The parallel displacement procedure is more convenient for practical purposes than the slope correction method; (iii) A one percent change in Ni content will alter Cr content by 0.12 percent, one percent Mn by 0.20 percent, and one percent Mo by 0.36 percent; and (iv) Consequently, the samples taken as reference must be completely random in composition; otherwise, there will be unsatisfactory features to the slope or the intercepts. (Author)


Descriptors :   *STAINLESS STEEL , *NONDESTRUCTIVE TESTING , X RAY ABSORPTION ANALYSIS , FLUORESCENCE , X RAY ABSORPTION ANALYSIS , MATRICES(MATHEMATICS) , EQUATIONS , NICKEL , MOLYBDENUM , CHROMIUM , MANGANESE , IRON , CHEMICAL ANALYSIS


Distribution Statement : APPROVED FOR PUBLIC RELEASE