Abstract

For further improvement of reproducibility of intensity ratios of constituent vs. aluminum lines, noted when argon atmospheres were used in the spark excitation of aluminum alloy (Alcoa 24S) chip compacts, a study was made of the effects of the following factors: chip size, carbon bonding, shape of pellet, sample pellet to sample pellet and to carbon electrode forms. The results show that unbonded, flat tipped pellets to carbon counter-electrodes produce the most desirable combination. Chip size does not have a significant influence on the results.

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