Cyclic Oxidation of Titanium Grade 2

Materials

Adrian Barylski¹  Grzegorz Dercz¹  Krzysztof Aniołek¹  Marian Kupka¹ 

[1] Institute of Materials Engineering, University of Silesia, ul. 75 Pułku Piechoty 1A, 41-500 Chorzów, Poland;

关键词: cyclic oxidation;    morphology;    oxidation kinetics;    oxide scale;    titanium Grade 2;   

DOI  :  10.3390/ma13235431

来源: DOAJ

【 摘 要 】

This paper presents the results of research into the cyclic oxidation of titanium Grade 2. The value of titanium Grade 2 oxidation activation energy was determined based on an analysis of the Arrhenius diagram. The result was 205.3 kJ/mol. After cyclic oxidation at a temperature of 600 °C, the presence of oxides in an acicular system was observed on the surface. The specimen surface after oxidation at 650 °C was characterised by the presence of fine oxide particles, while after oxidation at 700 °C, the obtained oxide layer was composed of large oxide particles. The layers obtained after oxidation at 600 °C had the lowest thickness (1.26 and 2.12 µm), while those obtained at 700 °C had the highest thickness (5.17 and 9.45 µm). Examination of the phase composition after cyclic oxidation showed that the oxide layers obtained at temperatures of 600, 650 and 700 °C were composed of TiO₂ (rutile) only. No presence of other phases was found. The oxide layers formed in the cyclic oxidation process were characterised by different thicknesses, depending on the oxidation parameters. It was found that cyclic oxidation contributed to a considerable increase in the surface hardness of titanium Grade 2.

【 授权许可】

Unknown