Study on gas permeation behaviour through atmospheric plasma-sprayed yttria stabilized zirconia coating

2008 ◽  
Vol 202 (20) ◽  
pp. 5055-5061 ◽  
Author(s):  
Chao Zhang ◽  
Wen-Ya Li ◽  
Marie-Pierre Planche ◽  
Cheng-Xin Li ◽  
Hanlin Liao ◽  
...  
Keyword(s):  
Gas Permeation ◽  
Yttria Stabilized Zirconia ◽  
Atmospheric Plasma ◽  
Zirconia Coating ◽  
Stabilized Zirconia ◽  
Plasma Sprayed

Constrained and Non-Constrained Sintering of Plasma-Sprayed Zirconia Based Electrolytes for SOFCs

2010 ◽  
Vol 65 ◽  
pp. 263-268 ◽  
Author(s):  
Claudia Christenn ◽  
Syed Asif Ansar
Keyword(s):  
Solid Oxide Fuel Cells ◽  
Atmospheric Plasma Spraying ◽  
Solid Oxide ◽  
Yttria Stabilized Zirconia ◽  
Atmospheric Plasma ◽  
Oxide Fuel ◽  
Microstructure Development ◽  
Stabilized Zirconia ◽  
Free Standing ◽  
Plasma Sprayed

Electrolyte layers for solid oxide fuel cells (SOFCs) consisting typically of yttria-stabilized zirconia were prepared using atmospheric plasma spraying in a first step and sintered in a second one. The influence of particle size on sintering kinetics and microstructure development was analyzed by comparison of nanostructured and conventional YSZ layers. Sintering of free-standing coatings differ significantly from that of coatings on substrates.

Thermal Properties of Plasma-Sprayed Multilayer Al2O3/Yttria-Stabilized Zirconia Coating

2020 ◽  
Vol 20 (1) ◽  
pp. 524-529 ◽  
Author(s):  
Byeong-Hong Jeong ◽  
Sang-Mi Park ◽  
Woo-Sik Hwang ◽  
Kyung-Hwan Hyun ◽  
Yun-Ok Park ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Yttria Stabilized Zirconia ◽  
Zirconia Coating ◽  
Stabilized Zirconia ◽  
Plasma Sprayed

Very low pressure plasma sprayed yttria-stabilized zirconia coating using a low-energy plasma gun

2011 ◽  
Vol 105 (4) ◽  
pp. 991-996 ◽  
Author(s):  
Lin Zhu ◽  
Nannan Zhang ◽  
Rodolphe Bolot ◽  
Marie-Pierre Planche ◽  
Hanlin Liao ◽  
...  
Keyword(s):  
Low Pressure ◽  
Low Energy ◽  
Yttria Stabilized Zirconia ◽  
Zirconia Coating ◽  
Stabilized Zirconia ◽  
Plasma Gun ◽  
Pressure Plasma ◽  
Low Pressure Plasma ◽  
Plasma Sprayed

Failure Mechanism of Yttria Stabilized Zirconia Atmospheric Plasma Sprayed Thermal Barrier Coatings Subjected to Calcia-Magnesia-Alumino-Silicate Environmental Attack

2017 ◽  
Vol 270 ◽  
pp. 39-44 ◽  
Author(s):  
Ladislav Čelko ◽  
David Jech ◽  
Pavel Komarov ◽  
Michaela Remešová ◽  
Karel Dvořák ◽  
...  
Keyword(s):  
Thin Layer ◽  
Thermal Barrier Coatings ◽  
Yttria Stabilized Zirconia ◽  
Atmospheric Plasma ◽  
Thermal Barrier ◽  
Stabilized Zirconia ◽  
Barrier Coatings ◽  
Alumino Silicate ◽  
Plasma Sprayed ◽  
Environmental Attack

The contribution focuses on the description of failure mechanism of atmospheric plasma sprayed multilayer thermal barrier coatings subjected to calcia-magnesia-alumino-silicate (CMAS) environmental attack. To identify exothermic and endothermic reactions which occurred during heating/cooling by means of calorimetry was also utilized initial yttria stabilized zirconia (YSZ) powder subsequently used for thermal spraying of multilayer thermal barrier coating system (TBCs), CMAS powder later on utilized for thin layer deposition and its mixture. Atmospheric plasma spray technique was used to produce the TBCs on a grit blasted nickel-based superalloy substrates, where CoNiCrAlY powder was used for deposition of a bond coat and YSZ powder was sprayed as a top coat. In accordance to the aerospace standard the thin layer of CMAS was deposited on as sprayed TBCs samples surface from its colloidal solution by paint brush method. Burner-rig test, utilizing direct propane-oxygen flame, was used for thermal cyclic exposition of the multilayer coated samples at the temperature of 1150 °C. Samples after thermal cyclic exposure test were investigated by means of materialographic analysis approaches. The significant reduction in life-time of CMAS coated YSZ top coat was observed due to lower melting point phase formation and molten silicate crystallization within the pores providing the spallation identified as a major mechanism of TBCs failure.

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