Influence of Nb addition on the oxidation behavior of novel Ni-base superalloy
Influence of Nb on oxidation behavior of novel Ni-base superalloy was investigated in detail
at 1000° C. Although alloy with 2 wt% Nb (2Nb) exhibits significantly higher weight gain than
alloy without Nb (0Nb), oxide scale of 2Nb was more continuous and compact. In contrast,
0Nb underwent severe vaporization and spallation in oxide scale. Nb was found to
accelerate the formation of compact TiO 2 on Cr 2 O 3 layer, leading to inhibited vaporization
and spallation in oxide scale. Nb also accelerated the formation of continuous CrTaO 4 layer …
at 1000° C. Although alloy with 2 wt% Nb (2Nb) exhibits significantly higher weight gain than
alloy without Nb (0Nb), oxide scale of 2Nb was more continuous and compact. In contrast,
0Nb underwent severe vaporization and spallation in oxide scale. Nb was found to
accelerate the formation of compact TiO 2 on Cr 2 O 3 layer, leading to inhibited vaporization
and spallation in oxide scale. Nb also accelerated the formation of continuous CrTaO 4 layer …
Abstract
Influence of Nb on oxidation behavior of novel Ni-base superalloy was investigated in detail at 1000 °C. Although alloy with 2 wt%Nb (2Nb) exhibits significantly higher weight gain than alloy without Nb (0Nb), oxide scale of 2Nb was more continuous and compact. In contrast, 0Nb underwent severe vaporization and spallation in oxide scale. Nb was found to accelerate the formation of compact TiO2 on Cr2O3 layer, leading to inhibited vaporization and spallation in oxide scale. Nb also accelerated the formation of continuous CrTaO4 layer beneath the Cr2O3, enhancing the oxidation resistance via inhibiting the interdiffusion of oxygen, nitrogen and metallic elements.
Elsevier
以上显示的是最相近的搜索结果。 查看全部搜索结果