Abstract
In the form of thin films, La1-xSrxTio3+δ has been used as a valuable functional material in many fields of electronics because of its excellent electrical and magnetic performance. However, there have been rare reports on La1-xSrxTio3+δ thick coatings deposited on metal substrates. For the first time, we explored the possibility of depositing La1-xSrxTio3+δ thick coatings on metallic substrates by the atmospheric plasma spraying technique. La1-xSrxTio3+δ powders as precursors for plasma spraying were first prepared by a solid-state reaction method without any granulation technique. The crystal-phase structure and surface morphology of the La1-xSrxTio3+δ powders and coatings thereof were examined by X-ray diffraction and scanning electron microscopy analyses, respectively. The preliminary results collected indicated that La1-xSrxTio3+δ coatings could be deposited efficiently. A high bonding strength above 40 MPa and a low porosity of only 3.5% could be achieved with a suitably selected set of experimental parameters. Our findings suggest that La1-xSrxTio3+δ could be a promising candidate as a ceramic coating on metallic substrates for diverse applications.
Original language | English |
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Pages (from-to) | 2611-2616 |
Number of pages | 6 |
Journal | Science of Advanced Materials |
Volume | 7 |
Issue number | 12 |
DOIs | |
Publication status | Published - 2015 |
Keywords
- Adhesion
- LaSrTio Coating
- Microstructure
- Plasma spraying