The anodic behavior of synthetic nickel sulfides in sulfuric acid solutions was studied.Whenthe anodes of Ni<sub>3</sub>S<sub>2</sub> ,Ni<sub>7</sub>S<sub>6</su
Diffusion reaction of superconductig composite NbTi/Cu assembled both mechanicallyand metallurgically,diffusion couples Ti/Cu and Nb/Cu have/been studied by mea