<p>Ru–Al–Ni ternary alloys, created by adding Ru to NiAl, are promising bond-coat materials. However, limited characterization as coatings for Ni-based superalloys necessitates better understanding of their properties to enhance high-temperature performance. In this study, we collect data on the basic properties, thermal properties, mechanical properties at high-temperatures, and oxidation resistance of Ru–Al–Ni ternary alloys with different compositions. The linear expansion coefficient can be controlled through composition, and high thermal conductivity can be achieved by combining the binary <i>β</i>-phase with this alloy in a layered configuration. Furthermore, it offers excellent oxidation resistance, with Ni preventing weight loss trend in the coating by acting as a diffusion barrier for Ru. This alloy also provides good compatibility with Ni-based superalloy substrates. In conclusion, optimized compositions enhance substrate compatibility, control thermal expansion, and prevent weight loss trend with Ni-enriched diffusion barriers, making them suitable for aerospace applications.</p> Graphical abstract <p></p>