TY - JOUR
T1 - Changes in thermal conductivity and thermal shock resistance of YSZ-SiO2 suspension plasma spray coatings according to various raw material particle sizes
AU - Jeon, Hakbeom
AU - Lee, Inhwan
AU - Oh, Yoonsuk
N1 - Funding Information:
This work was supported by the Korea Institute of Ceramic Engineering and Technology (119-82-06696), funded by the Industrial Strategic Technology Development Program of the Ministry of Trade, Industry and Energy (MOTIE, #10077479).
Funding Information:
This work was supported by the Korea Institute of Ceramic Engineering and Technology ( 119-82-06696 ), funded by the Industrial Strategic Technology Development Program of the Ministry of Trade, Industry and Energy ( MOTIE , #10077479).
PY - 2021/2/1
Y1 - 2021/2/1
N2 - Recently, a technique for improving the thermal efficiency of automotive engines has received considerable attention, namely the application of thermal insulation coatings to automotive engine components to reduce heat loss. This study presents thermal shock resistance and related microstructural changes and thermal properties of 8 wt% yttria-stabilized zirconia (8YSZ)/SiO2 multi-compositional thermal insulation coatings with suspensions of various particle sizes, when subjected to suspension plasma spray. After 10,000 cycles of thermal shock testing of the coatings, it was found that different degradation behavior related to the different microstructure of the coatings was influenced by the particle sizes of the suspension. The thermal conductivity of the coatings was significantly reduced by increasing the distribution of the unmelted particles within the coating.
AB - Recently, a technique for improving the thermal efficiency of automotive engines has received considerable attention, namely the application of thermal insulation coatings to automotive engine components to reduce heat loss. This study presents thermal shock resistance and related microstructural changes and thermal properties of 8 wt% yttria-stabilized zirconia (8YSZ)/SiO2 multi-compositional thermal insulation coatings with suspensions of various particle sizes, when subjected to suspension plasma spray. After 10,000 cycles of thermal shock testing of the coatings, it was found that different degradation behavior related to the different microstructure of the coatings was influenced by the particle sizes of the suspension. The thermal conductivity of the coatings was significantly reduced by increasing the distribution of the unmelted particles within the coating.
KW - Automotive engine
KW - Suspension plasma spray
KW - Thermal insulation coating
KW - Thermal shock resistance
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U2 - 10.1016/j.ceramint.2020.09.219
DO - 10.1016/j.ceramint.2020.09.219
M3 - Article
AN - SCOPUS:85092181522
SN - 0272-8842
VL - 47
SP - 3671
EP - 3679
JO - Ceramics International
JF - Ceramics International
IS - 3
ER -