Differential scanning calorimetry and x-ray-diffraction analysis were utilized to compare solid-state reactions in multilayered composites of two different metal systems: Ni-Zr and Ni-Ti. We found that solid-state amorphization reactions occurred in both the Ni-Zr and the Ni-Ti system. Our results indicate that a suitable kinetic constraint exists on the formation of crystalline intermetallic compounds in the Ni-Ti system such that solid-state amorphization reactions can occur in this system, although the relatively sluggish growth of amorphous material in the Ni/Ti composites limits the thickness that can be grown. The differences between the kinetics of the solid-state amorphization reactions in these two systems provide some insight into the nature of the solid-state amorphization process.
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White et al. (1990) studied this question.