Abstract
The surface composition of copper-nickel alloy powders was measured by chemisorption. Three different techniques were used for comparison, namely, strong hydrogen chemisorption, temperature-programmed desorption of hydrogen, and decomposition of N 2O. The agreement between the compositions determined by these three techniques was excellent. A segregation of copper atoms to the powder surfaces was confirmed. The chemisorption strength of hydrogen atoms on nickel is weakened by alloying with copper.
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