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Paper Information

Journal:   AMIRKABIR   SPRING-SUMMER 2006 , Volume 17 , Number 64-C; Page(s) 45 To 50.
 
Paper: 

LOW POROUS COATING LAYER OF ZIRCONIA POWDER ON TITANIUM METAL BY ELECTROPHORESIS METHOD

 
 
Author(s):  ASHENA E., SARAF MAMOURI R., TALAFI NOUGHANI M.
 
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Abstract: 

Nowadays, elecrochemical methods such as electrophoretic deposition are extensively used in industrial and laboratory activities, due to their high ability to control the surface morphology and the possibility for manufacturing different types of ceramic, metal and ceramic/metal composite bodies.
In this research, ZrO2 electrolyte of solid oxide fuel cell is coatd on Titanium substrate. For this reason, first Zirconia powder was stablized in acetone and ethanol mixture by adding iodine and then electric field was applied between cathode and anode poles of cell that made the charged zirconia particles to deposit on the surface of Ti (cathode pole in cell). Effects of parameters such as solvent type, voltage, process time, zirconia powder and additive amounts in solvent plus sintering conditions in quality of coated layer were investigated.
Results were shown that it could be possible to stabilize 20 (gI) of zirconia powder in two to one volumetric ratio of acetone and ethanol mixture by adding 1/2 (gI) iodine. Also applying 25 volt between the poles of cell for 20 minutes is suitable. Finally, the layer was sintered in 1250 °C temperature in hydrogen atmosphere for 2 hours.

 
Keyword(s): EPD, ELECTROPHORESIS, ZIRCONIA (ZRO2), ELECTROLYTE, FUEL CELL, TITANIUM
 
References: 
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