Redox Nanostructuring of Biporous Nickel(II) Sintered Using a Space Holder

Permeable nickel metallic and nickel oxide ceramic materials with nanostructured surface and multilevel hierarchical porosity were created by cyclic redox post-treatment of biporous nickel(II) consolidated in the sintering-dissolution process. Additional levels of intraparticle porosity-Kirkendall pores and shrinkage nanopores-were formed during the stages of high-temperature oxidation in air and reduction in hydrogen, respectively.

Automated summary

Permeable nickel metallic and nickel oxide ceramic materials with nanostructured surface and multilevel hierarchical porosity were created by cyclic redox post-treatment. Additional levels of intraparticle porosity, including Kirkendall pores and shrinkage nanopores, were formed during high-temperature oxidation and reduction processes.