Accession Number : AD0713690

Title :   GENERAL ALLOY ANALYSIS WITH A GAS SHEATHED TUBULAR ELECTRODE ARC.

Descriptive Note : Technical rept. Mar 69-Mar 70,

Corporate Author : AIR FORCE MATERIALS LAB WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Muntz,James H.

Report Date : AUG 1970

Pagination or Media Count : 31

Abstract : The gas sheathed tubular electrode arc has been investigated and applied to general alloy analysis. One set of six solution standards containing 18 different elements was used. Matrix effects have been mostly controlled by using a lmg/ml sample or standard in a solution containing 6mg/ml of sodium as the chloride. Fourteen different standard alloys (NBS and Alcoa) were tested, representing seven different base metals. The overall accuracy was only about plus or minus 8% deviation from the certified value. This would permit identification of alloy type, but for greater accuracy standards more closely approximating the sample should be used. Precision for the technique is normally plus or minus 3 to 4% relative standard deviation with photographic detection. (Author)

Descriptors :   (*ALLOYS, *CHEMICAL ANALYSIS), AEROSOLS, STANDARDS, ATOMIC SPECTROSCOPY, PLASMA JETS, ELECTRODES, DESIGN, TEST METHODS

Subject Categories : Organic Chemistry
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE