Exploring the effects of Mn content in the Mn-Co spinel coating on its formation and slowing the outward Cr diffusion
Source abstract
Abstract
Effects of Mn content on the performance of Mn-Co spinel coatings are clarified systematically. Two dense spinel coatings are fabricated on Crofer 22 H by microwave sintering and subsequent oxidation. After oxidation at 800 ℃ in air for 400 h, the thickness of the Cr-containing layer of MnCo 2O 4-coated sample is significantly lower than that of (Mn, Co) 3O 4-coated sample. The growth mechanism of Cr-containing layer is elucidated from aspects of stabilizing energy and configurational entropy. Controlling Mn 3+ content reduces the outward diffusion channels for Cr and avoids the excessive growth of the Cr-containing layer, achieving a lower resistance as well.
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Research context
OpenAlex topics: Catalytic Processes in Materials Science · ZnO doping and properties · Microwave Dielectric Ceramics Synthesis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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