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Formation of a protective scale such as chromia or alumina is a prerequisite for an excellent oxidation performance of high-temperature materials.Based on this principle,a novel concept of designing chromia-or alumina-forming metal-base composites was proposed to be assembled in a nano scale by means of co-electrodeposition of a metal with the nanoparticles of Cr or/and Al.The assembled composites had a unique structure being composed of the nanocrystalline metal matrix and the dispersed nanopartides.In this contribution,the assembly and oxidation of the composites of two-phase binary Ni-Cr and Ni-Al,two-phase ternary Cu-Ni-Cr and three-phase temary Ni-Cr-Al,was reviewed.The composites,compared to compositionally similar but microstructurally different alloy counterparts,exhibited a superior oxidation resistance,as a result of their intrinsical ability to thermally grow a protective scale with a greatly increased rate at the onset of oxidation.The protective scale would be chromia,alumina,or their combinations,depending on the composites composition.The result highlights a new way for fabricating a high-temperature-oxidation-resistant coating,through the structure tailoring and without the necessity of increasing the content of Cr and/or Al.