X-ray Stress Measurement for Ni-Al System Intel-metallic Compound Prepared by SHS- method

摘要

An X-ray diffraction technique was used to measure the residual stress in the surface of a specimen containing a coating of a Ni_3Al intermetallic compound produced bythe SHS (Self-propagation High temperature Synthesis) method. The Ni_3Al was using the coating material for spherical carbon cast iron substrate and austenite stainless steel substrate. Differences between the coefficient of thermal expansion of the coating and substrate were c onfirmed to be the source of compression stress in the coating.