The Mechanism of Induced Codeposition of Ni-W Alloys

摘要: The term induced codeposition was coined by Brenner in 1963, to describe a situation where “a metal, which cannot be deposited alone from its aqueous solution, is codeposited the presence of another forming an alloy”. An overview mechanism suggested our earlier papers for electrodeposition Ni-W alloys solutions containing citrate as complexing agent, and experimental observations that support it, are presented this paper. It postulated results formation mixed-metal complex, such ( )( ) [ ] − 2 4 Cit H WO Ni , precursor deposition alloy. Tungsten can only while there parallel paths Ni. concentration complex calculated on basis observed mass-transport limitation partial current W.