期刊
MATERIALS LETTERS
卷 141, 期 -, 页码 100-103出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2014.11.072
关键词
Thick films; Deposition; Microstructure; WO3; Liquid plasma spraying; Planar grain
资金
- National Natural Science Foundation of China [31271017, 41476064]
- Ningbo International Collaboration Project [2012D10010]
- 100 Talents Program of Chinese Academy of Sciences
Porous nanostructured WO3 coatings were deposited by two routes, solution and suspension plasma spraying. The nanostructural characteristics of the coatings were tunable by adjusting the constituents of the starting liquid precursor and spray parameters. Planar or spherical WO3 grains with controllable sizes in nano-scale have been fabricated. Complete formation of spherical WO3 grains was attained during solution plasma spraying. Enhanced heating of the nano-WO3 particles by augmenting plasma power gave rise to oriented WO3 grain growth along (0 0 2) plane. The planar WO3 grains with the dimension of similar to 50 nm, similar to 80 nm, and similar to 700 nm in thickness, width, and length respectively were fabricated by the suspension plasma spraying. The results provide clear insight into potential gas-sensing applications of the porous WO3 coatings. (C) 2014 Elsevier B.V. All rights reserved.
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