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Ding, Z. (author), Brouwer, J.C. (author), Zhu, Jia-Ning (author), Popovich, V. (author), Hermans, M.J.M. (author), Sloof, W.G. (author)Boron containing MoSi<sub>2</sub> is a promising material for applications at high temperature, but the oxidation mechanism is still unclear. In this work, the high temperature (1100 °C) oxidation of B doped MoSi<sub>2</sub> in synthetic air has been investigated. A (boro)silicate layer is formed on the surface of the alloy, which features a...journal article 2023
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Aghaeian, S. (author), Brouwer, J.C. (author), Sloof, W.G. (author), Mol, J.M.C. (author), Bottger, A.J. (author)Since the oxidation reactions in the process of steel production occur in harsh conditions (i.e., high temperatures and gas atmospheres), it is practically impossible to observe in situ the compositional changes in the steel and the formed oxide scale. Hence, a coupled thermodynamic-kinetic numerical model is developed that predicts the...journal article 2023
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Ding, Z. (author), Brouwer, J.C. (author), Kwakernaak, C. (author), Zhu, Jia-Ning (author), Popovich, V. (author), Hermans, M.J.M. (author), Sloof, W.G. (author)To prevent premature triggering of the healing reaction in Mo-Si containing self-healing thermal barrier coating system, an oxygen impenetrable shell (α-Al<sub>2</sub>O<sub>3</sub>) around the sacrificial healing particles (MoSi<sub>2</sub>) is desired. Here an encapsulation method is presented through selective oxidation of Al in Mo(Al<sub>x...journal article 2023
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Ding, Z. (author), Brouwer, J.C. (author), Kwakernaak, C. (author), Hermans, M.J.M. (author), Popovich, V. (author), Quadakkers, Willem J. (author), Sloof, W.G. (author)Mo(Al<sub>x</sub>Si<sub>1-x</sub>)<sub>2</sub> alloy with x in the range of 0.35–0.65 were prepared by a one-step spark plasma sintering. To study the exclusive formation of an α-Al<sub>2</sub>O<sub>3</sub> scale, oxidation experiments were conducted in low and high oxygen partial pressure ambient at 1373 K; viz.: 10<sup>−14</sup> and 0.21...journal article 2023
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Aghaeian, S. (author), Sloof, W.G. (author), Mol, J.M.C. (author), Bottger, A.J. (author)High-temperature oxidation of steels can be relatively fast when exposed to air. Consequently, elucidating the effect of different parameters on the oxidation mechanism and kinetics is challenging. In this study, short-time oxidation was investigated to determine the oxidation mechanism, the affecting parameters, and the linear-to-parabolic...journal article 2022
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Mao, W. (author), Sloof, W.G. (author), Hendrikx, R.W.A. (author)The effect of Cr on the oxidation of Fe–Mn-based steels during isothermal annealing at different dew points was investigated. The Fe–Mn–Cr–(Si) phase diagrams for oxidizing environments were computed to predict the oxide phases. Various Fe–Mn steels with different concentrations of Cr and Si were annealed at 950 °C in a gas mixture of Ar or N...journal article 2017
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Nijdam, T.J. (author), Sloof, W.G. (author)The relation between the Y distribution in the alloy and the growth kinetics of the developing oxide scale was studied for the thermal oxidation of two Ni–20Co–19Cr–24Al–0.2Y (at.%) alloys at 1,373 K: (i) a coarse-grain cast alloy with large Ni5Y intermetallic precipitates, and (ii) a fine-grain freestanding coating with small Ni5Y precipitates....journal article 2007