Abstract
Sintering of a Ni-6 mass%B-58.6 mass%Mo-10 mass%Cr alloy was attempted to differentiate the effects of Cr source as an addition to the alloy by using CrB powder and Cr powder respectively. The sintered alloy using CrB powder showed superior mechanical properties to the alloy using Cr powder. An orthorhombic complex boride was formed prior to formation of a tetragonal complex boride in the alloy regardless of Cr source. The alloy using CrB powder exhibited a faster crystal structural change from orthorhombic to tetragonal with the increasing temperature than the alloy using Cr powder.
