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RESEARCH PRODUCT
Microstructure and electric properties of low-pressure plasma sprayed β-FeSi 2 based coatings
Hanlin LiaoX. FengMarie-pierre PlancheF. BernardChristophe Verdysubject
010302 applied physicsMaterials scienceMetallurgyAlloy02 engineering and technologySurfaces and InterfacesGeneral Chemistryengineering.material021001 nanoscience & nanotechnologyCondensed Matter PhysicsThermoelectric materialsMicrostructure01 natural sciencesGrain sizeSurfaces Coatings and FilmsThermal conductivityCoating0103 physical sciencesMaterials ChemistryengineeringComposite material0210 nano-technologyThermal sprayingEutectic systemdescription
Abstract Thermoelectric material β-FeSi 2 based coating was fabricated by the technique low-pressure plasma spray (LPPS) on the Al 2 O 3 substrate from different alloy powders. During the process LPPS, the phase transformation had occurred through the peritectoid, eutectoid reaction and their inverse reaction. The grain size of the as-sprayed β-FeSi 2 doped Co coatings was reduced comparing with the original feedstock powders, which implied the thermal conductivity could effectively decreased by the LPPS process. The room temperature electrical conductivity showed metal and semiconductor properties on the as-sprayed and annealed coatings. This method and the results could solve the problems of practical application especially on special-shaped surfaces such as the automobile exhaust pipe or other complex surface shape of the device.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-05-01 | Surface and Coatings Technology |