Influence of 2 (wt%) titanium addition on the oxidation resistance of tungsten

Nuclear Materials and Energy

P. Pérez¹  M.A. Monge² 

[1] Centro Nacional de Investigaciones Metalúrgicas, Departamento de Metalurgia Física, CENIM-CSIC, Avda. Gregorio del Amo 8, 28040 Madrid, Spain;Universidad Carlos III de Madrid, Departamento de Física, Avda. de la Universidad 30, 28911 Leganés, Madrid, Spain;

关键词: Tungsten;    Tungsten oxide;    Titanium alloying;    High-temperature oxidation;   

DOI  :  

来源: DOAJ

【 摘 要 】

The oxidation behaviour of W-2Ti (wt%) alloy has been evaluated in dry air at 600, 700 and 800 °C for 100 h and the kinetics compared with those for pure tungsten. Titanium addition exerts a beneficial effect on the oxidation resistance of pure tungsten. The mass gain is almost five times smaller than in the case of commercial tungsten and three times smaller than that of tungsten prepared by powder metallurgy at 600 °C. This effect is even higher at 700 and 800 °C, where the titanium addition suppresses catastrophic oxidation of pure tungsten. Major influence of titanium regards the suppression of massive microcracking in the scale, avoiding the development of the typical non-protective multilayered scale pattern formed on pure tungsten.

【 授权许可】

Unknown