A series of amino acids and carboxylic acids were determined by C NMR spectroscopy. 13 The results showed that addition of 3M MgCl2 led to the C NMR integr
Age hardening in Cu-3.2Ni-0.75Si (wt pct) and Cu-1.0Ni-0.25Si (wt pct) alloys from 723 to 823 K is studied. After an incubation period strengthening appears wh