Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Comparison of the Oxidation Protection of HfB2 Based Ultra‐High Temperature Ceramics by the Addition of SiC or MoSi2.
Oxidation resistance tests were conducted on HfB2‐SiC and HfB2‐MoSi2 samples using direct electrical resistance heating at 1750, 1950 and 2490°C. Analysis of the formed oxide scales showed a distinct difference between the two silicon bearing additives to HfB2. SiC formed a layered oxide scale of HfO2 and SiO2, offering oxidation protection at 1750°C and a nonadherent scale at 1950°C. MoSi2 promotes a mixed scale of SiO2, HfO2, and molybdenum oxides and borides at all temperatures that remained adherent to the bulk up to 2490°C. Comparison and evaluation of oxide scales showed the improved adherence performance of HfB2‐MoSi2 when compared to HfB2‐SiC.
Comparison of the Oxidation Protection of HfB2 Based Ultra‐High Temperature Ceramics by the Addition of SiC or MoSi2.
Oxidation resistance tests were conducted on HfB2‐SiC and HfB2‐MoSi2 samples using direct electrical resistance heating at 1750, 1950 and 2490°C. Analysis of the formed oxide scales showed a distinct difference between the two silicon bearing additives to HfB2. SiC formed a layered oxide scale of HfO2 and SiO2, offering oxidation protection at 1750°C and a nonadherent scale at 1950°C. MoSi2 promotes a mixed scale of SiO2, HfO2, and molybdenum oxides and borides at all temperatures that remained adherent to the bulk up to 2490°C. Comparison and evaluation of oxide scales showed the improved adherence performance of HfB2‐MoSi2 when compared to HfB2‐SiC.
Comparison of the Oxidation Protection of HfB2 Based Ultra‐High Temperature Ceramics by the Addition of SiC or MoSi2.
Kriven, Waltraud M. (Herausgeber:in) / Zhu, Dongming (Herausgeber:in) / Moon, Kyoung II (Herausgeber:in) / Hwang, Taejin (Herausgeber:in) / Wang, Jingyang (Herausgeber:in) / Lewinsohn, Charles (Herausgeber:in) / Zhou, Yanchun (Herausgeber:in) / Carney, C.M. (Autor:in) / Key, T.S. (Autor:in)
19.12.2014
15 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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