scholarly journals The Mechanism of High Thermal Shock Resistance of Nanostructured Ceramic Coatings

2014 ◽  
Vol 12 (5) ◽  
pp. 1096-1102 ◽  
Author(s):  
Lihong Liang ◽  
Xiaona Li ◽  
Yueguang Wei ◽  
Hua Wei
Keyword(s):  
Thermal Shock ◽  
Thermal Shock Resistance ◽  
Ceramic Coatings ◽  
Nanostructured Ceramic ◽  
Shock Resistance ◽  
High Thermal Shock Resistance

High thermal shock resistance of the hot rolled and swaged bulk W–ZrC alloys

2016 ◽  
Vol 469 ◽  
pp. 209-216 ◽  
Author(s):  
Z.M. Xie ◽  
R. Liu ◽  
S. Miao ◽  
X.D. Yang ◽  
T. Zhang ◽  
...  
Keyword(s):  
Thermal Shock ◽  
Thermal Shock Resistance ◽  
Shock Resistance ◽  
Hot Rolled ◽  
High Thermal Shock Resistance

STUDIES OF THERMAL SHOCK RESISTANCE OF AN ANTI-OXIDATION COATING FOR A MULTI-LAYERED CERAMIC COMPOSITE

2021 ◽  
pp. 51-58
Author(s):  
B.E. Goncharov ◽  
◽  
A.M. Sipatov ◽  
N.N. Cherkashneva ◽  
A.Yu. Pleskan ◽  
...  
Keyword(s):  
Thermal Shock ◽  
Thermal Shock Resistance ◽  
Gas Flow ◽  
Ceramic Composite ◽  
Fuel Gas ◽  
Refractory Compounds ◽  
Turbojet Engine ◽  
Shock Resistance ◽  
Layered Ceramic ◽  
High Thermal Shock Resistance

The article covers the performance of thermal shock resistance experiments of a ceramic composite with two types of anti-oxidation coatings. A thermal shock burner rig was used to carry out the experiments similar to those expected in a combustor of a turbojet engine. SEM and х-ray diffraction analyses were used to examine the antioxidation coatings. It was deter-mined that the coating based on the refractory compounds possesses high thermal shock resistance when exposed to the fuel gas flow from a burner rig.

Development of Aluminum Titanate-Mullite Composite Having High Thermal Shock Resistance

1986 ◽  
Vol 69 (10) ◽  
pp. C-226-C-227 ◽  
Author(s):  
Hiroyuki Morishima ◽  
Zenji Kato ◽  
Keizo Uematsu ◽  
Katsukazu Saito ◽  
Toyohiko Yano ◽  
...  
Keyword(s):  
Thermal Shock ◽  
Thermal Shock Resistance ◽  
Aluminum Titanate ◽  
Shock Resistance ◽  
High Thermal Shock Resistance

Properties of Ceramic Coatings on the Wall of Coke Oven

2011 ◽  
Vol 189-193 ◽  
pp. 1105-1108
Author(s):  
Shu Xian Liu ◽  
Li Li Shen ◽  
Qian Ping Wang
Keyword(s):  
Thermal Shock ◽  
Thermal Shock Resistance ◽  
High Hardness ◽  
Coke Oven ◽  
Ceramic Coatings ◽  
Good Adhesion ◽  
Before And After ◽  
Shock Resistance ◽  
Uncoated Specimen ◽  
Better Than

Flame sprayed ceramic coatings on the wall of coke oven are characterized before and after melting. The attempt has been made to investigate thermal shock resistant, carbon deposit resistant, wear resistant of the coated and melted samples. The techniques used are SEM and XRD. The results show that: 1) Presence of quartz, corundum and mullite are identified in the surface of the coated specimen. Good adhesion between the coating and the substrate is caused by presence of quartz which is the same content as the substrate.2) The thermal shock resistance cycles of the coating samples are 15 ~ 30 times, but uncoated samples are only 1~2 times. The main reason is that he coating–substrate interface shows no gaps or cracks, and it has a characteristic feature of good adhesion between the coating and the substrate. 3) The wear resistance of the coated samples are better than that of the uncoated samples because glass-coating is more smooth than the uncoated specimen and the mullite and corundum in the coating have the high hardness value that makes the hardness of the coating increased.

High thermal-shock resistance of aluminum nitride ceramics

Refractories ◽  
1980 ◽  
Vol 21 (3-4) ◽  
pp. 183-186
Author(s):  
F. A. Fekhretdinov ◽  
V. B. Kalinin ◽  
Yu. I. Vikhrev
Keyword(s):  
Aluminum Nitride ◽  
Thermal Shock ◽  
Thermal Shock Resistance ◽  
Nitride Ceramics ◽  
Shock Resistance ◽  
High Thermal Shock Resistance

Fabrication of transparent Y2O3 ceramics with record-high thermal shock resistance

2018 ◽  
Vol 38 (11) ◽  
pp. 4050-4056 ◽  
Author(s):  
Lin-Lin Zhu ◽  
Young-Jo Park ◽  
Lin Gan ◽  
Ha-Neul Kim ◽  
Jae-Woong Ko ◽  
...  
Keyword(s):  
Thermal Shock ◽  
Thermal Shock Resistance ◽  
Shock Resistance ◽  
High Thermal Shock Resistance

Study on Thermal Shock Resistance of Nano-CeO2–Y2O3 Co-Stabilized ZrO2 (CYSZ) Ceramic Powders Thermal Barrier Coating of Aircraft Engine

2019 ◽  
Vol 14 (11) ◽  
pp. 1597-1605
Author(s):  
Yang Lyu ◽  
Xuan Shao ◽  
Wen-Xue Wang ◽  
Hui Tang
Keyword(s):  
Thermal Shock ◽  
Thermal Barrier Coating ◽  
Thermal Shock Resistance ◽  
Ceramic Coatings ◽  
Precipitation Method ◽  
Thermal Barrier ◽  
Ceramic Powders ◽  
Alloy Matrix ◽  
Barrier Coating ◽  
Shock Resistance

In this paper, nano-CeO2–Y2O3 co-stabilized ZrO2 ceramic powders (CYSZ) were firstly prepared by co-precipitation method, and CYSZ powder was spray-granulated, followed by thermal plasma spraying of nano-CYSZ thermal barrier coating on 35Cr2Ni4 MoA alloy matrix. After XRD and SEM analysis, the five CYSZ ceramic coatings (CeO2 content 0, 1, 5, 10, 15 mol%) prepared were tetragonal phase structures before and after the thermal shock experiment, and the thickness of CYSZ ceramic coating was about 200 μm. Adding appropriate amount of nano CeO2 promoted the formation of micro-cracks in the coating, released the coating stress, slowed down the thermal shock damage process, and prevented the transformation from t-ZrO2 to m-ZrO2. The AFM morphology showed that the coating surface grains grow vertically after thermal shock cycle, which indicated that the entry of Ce4+ into ZrO2 lattice resulted in lattice distortion and made the grains more stable. When the content of CeO2 is 1 mol%, the thermal shock resistance excellent is 84 times. Therefore, the addition of CeO2 can effectively improve the thermal shock resistance performance of CYSZ thermal barrier coating, meeting the requirements of high temperature working conditions of aeroengine and hot-end components.

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