Carbide and nanocomposite thin films in the Ti-Pt-C system

THIN SOLID FILMS

卷:518

Article

Lewin, Erik¹  Buchholt, Kristina²  Lu, Jun³  Hultman, Lars³  Spetz, Anita Lloyd²  Jansson, Ulf¹ 

[1] Uppsala Univ, Angstrom Lab, Dept Chem Mat, SE-75121 Uppsala, Sweden

[2] Linkoping Univ, Dept Phys Chem & Biol, Div Appl Phys, IFM, SE-58131 Linkoping, Sweden

[3] Linkoping Univ, Dept Phys Chem & Biol, Thin Film Phys Div, IFM, SE-58131 Linkoping, Sweden

关键词: Solid solution carbide;    Nanocomposite;    Sputtering;    Gas sensor;    Annealing;    Transmission electron microscopy;    X-ray photoelectron spectroscopy;    X-ray diffraction;   

DOI  :  10.1016/j.tsf.2010.03.017

来源: Elsevier

【 摘 要 】

Thin films in the Ti-Pt-C system were deposited by non-reactive, DC-magnetron sputtering. Samples were characterised using X-ray photoelectron spectroscopy, X-ray diffraction, and transmission electron microscopy. A previously not reported metastable solid solution carbide, (Ti1-xPtx)C-y with a Pt/Ti ratio of up to 0.43 was observed. This solid solution phase was present both as single phase in polycrystalline samples, and together with amorphous carbon (a-C) in nanocomposite samples. Annealing of nanocomposite samples leads to the decomposition of the solid solution phase and the formation of a nc-TiCx/a-C/nc-Pt nanocomposite. Test sensors for automotive gas exhausts manufactured from such a three-phase material suffer from complete oxidation of the coating at 400 degrees C with no observed sensor activity. (c) 2010 Elsevier B.V. All rights reserved.

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