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RESEARCH PRODUCT

The effect of Mo and Ge reactive elements on high-temperature oxidation of higher manganese silicide

Peter Hugh MiddletonGunstein SkomedalNaureen AkhtarAntoine De Padoue Shyikira

subject

VDP::Teknologi: 500::Materialteknologi: 520Materials scienceDopantScanning electron microscopeGeneral Chemical EngineeringDopingInorganic chemistrytechnology industry and agricultureOxideGeneral ChemistryIsothermal processCorrosionThermogravimetrychemistry.chemical_compoundchemistryX-ray photoelectron spectroscopyGeneral Materials Science

description

Abstract Higher manganese silicide (HMS) alloys (Mnx-αMoαSiy-βGeβ (x = 0.99–1.011, α = 0.005–0.02, y = 1.75, β = 0.005–0.01)) were studied to elucidate the effect of Mo and Ge pertaining to oxidation. Oxidation experiments were conducted using thermogravimetry and characterized using x-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). Isoconversion experiments below 450 °C, shows that doping (up to 2 at%) raises the oxidation potential of HMS. Isothermally, the oxidation rate reduces buy one order of magnitude by doping on Mn and/or Si sites from 0.5 to 2 at%, revealing that the dopants-based oxides do not lessen the robustness of SiO2 oxide.

yearjournalcountryeditionlanguage
2021-01-01Corrosion Science
https://doi.org/10.1016/j.corsci.2021.109920