Preparation of Mo–Mo step by vacuum bond

The diffusion bond method was applied to prepare Mo–Mo steps used in equation of state (EOS) measurement experiments. A di-middle layer diffusion bond technique was developed to decrease the bond temperature. Al and Au atoms were deposited on Mo foils surface by magnetron sputter technique. As a result, tight bonds were formed by the mutual diffusion of Al and Au atoms. The structures of the bond interface were investigated by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM).