the influence of aluminizing process on the surface condition and oxidation resistance of ti–45al–8nb–0.5(b, c) alloy

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ID: 164233
2018
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Abstract
One of the major barriers limiting the suitability of TiAl intermetallic alloys for use in the demanding aircraft and automotive industries is their susceptibility to degradation as a result of oxidation at temperatures exceeding 760 °C. Paper presents the characteristics of resistance to cyclic oxidation at 950 °C for Ti–45Al–8Nb–0.5(B, C) alloy with and without protective coating obtained as a result of aluminizing using out of pack method. The characteristics of surface condition were determined by scanning electron microscope with EDS system, transmission electron microscope, and X-ray diffractometer. The favorable behavior of the Ti–45Al–8Nb–0.5(B, C) alloy with a protective coating under cyclic oxidation conditions is a result of a higher content of Al2O3 in the microstructure of the scale and the presence of Al and Nb-rich phases at the substrate interface, which probably constitue a barrier for oxidation process. The high temperature oxidation test revealed that aluminide coating was responsible for a remarkable improvement in the oxidation resistance.
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szkliniarz2018coatingsthe Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Wojciech Szkliniarz, Grzegorz Moskal, Agnieszka Szkliniarz, Radosław Swadźba
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Journal die pharmazie
Year 2018
DOI
10.3390/coatings8030113
URL
http://www.mdpi.com/2079-6412/8/3/113
Keywords
civil engineering (general) surface characterizationengineering (general)

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