Composite ceramic coating with enhanced thermal shock resistance formed by the in-situ synthesis of nano-ZrO2

2021 ◽  
Author(s):  
Jiang Jiapei ◽  
Chen Yongnan ◽  
Jiang Chaoping ◽  
Zhang Yong ◽  
Zhao Qinyang ◽  
...  
Keyword(s):  
Thermal Shock ◽  
Thermal Shock Resistance ◽  
Ceramic Coating ◽  
Composite Ceramic ◽  
In Situ Synthesis ◽  
Shock Resistance

In-situ synthesis and thermal shock resistance of cordierite/silicon carbide composites used for solar absorber coating

2014 ◽  
Vol 130 ◽  
pp. 257-263 ◽  
Author(s):  
Xiaohong XU ◽  
Zhenggang RAO ◽  
Jianfeng WU ◽  
Yonghua LI ◽  
Yaxiang ZHANG ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Thermal Shock ◽  
Thermal Shock Resistance ◽  
In Situ Synthesis ◽  
Solar Absorber ◽  
Shock Resistance

Fabrication of Self-Healing Ceramic Coating Against Oxidation for Carbon/Carbon Composite Using Polysilazane and Fillers

2009 ◽  
Vol 79-82 ◽  
pp. 775-778 ◽  
Author(s):  
Hong Li Liu ◽  
Chun Ying Tian
Keyword(s):  
Thermal Shock ◽  
Thermal Shock Resistance ◽  
Loss Rate ◽  
Ceramic Coating ◽  
Carbon Composite ◽  
Self Healing ◽  
Weight Loss Rate ◽  
Shock Resistance ◽  
Polymer Pyrolysis ◽  
Sealing Layer

The self-healing ceramic coating against oxidation for carbon/carbon composite was fabricated via preceramic polymer pyrolysis process using polysilazane as preceramic and MoSi2, B4C powders as fillers. By means of SEM and XRD, the phase compose and microstructure of coating were characterized, and preliminarily study on its anti-oxidation ability and thermal shock resistance were conducted. The results showed that, the coating is composed of the resisting oxidation layer and the sealing layer. The thickness of the coating is about 50μm, and the coating is uniform and densified. Good contact at the interfaces is visible on the SEM photograph. At 1300°C temperature, the thermal shock resistance test was conducted 50 times, the weight loss rate was 2.12%. In range of 1200°C~1500°C, the anti oxidation ability of the coating is good.

Sic Based Ceramic Foams Reinforced by In Situ Mullite Whisker

2009 ◽  
Vol 79-82 ◽  
pp. 1983-1986 ◽  
Author(s):  
Xiao Li Ji ◽  
Fei Xu ◽  
Hai Ya Chen
Keyword(s):  
Compressive Strength ◽  
Thermal Shock ◽  
Thermal Shock Resistance ◽  
Ceramic Foams ◽  
Sic Ceramic ◽  
Influence Of Temperature On ◽  
Shock Resistance ◽  
Mullite Whiskers ◽  
Maximum Compressive Strength

Prepared silicon carbide(SiC) ceramic foams combined with mullite whiskers which synthesized by in-situ reaction. Studied on the influence of temperature on the synthesis of mullite whisker, and the influence of mullite content on the compressive strength, thermal shock resistance of SiC ceramic foams. The results indicate that the performance of mullite whiskers synthesized at 1400°Cwere best, when mullite content was 25%, SiC ceramic foams could reach the maximum compressive strength for 1.75MP, the most thermal shock resistance for14 times.

Microstructure and Thermal Shock Behaviour of Alumina Composite Ceramic for Heat Transmission Pipeline

2014 ◽  
Vol 692 ◽  
pp. 217-223 ◽  
Author(s):  
Xiao Hong Xu ◽  
Xiao Yang Xu ◽  
Jian Feng Wu ◽  
Yang Zhou ◽  
De Zhi He
Keyword(s):  
Thermal Shock ◽  
Thermal Shock Resistance ◽  
Bending Strength ◽  
Raw Materials ◽  
Composite Ceramic ◽  
Alumina Powder ◽  
Monoclinic Zirconia ◽  
Heat Transmission ◽  
Transmission Pipeline ◽  
Shock Resistance

Al2O3 composite ceramics materials used for heat transmission pipeline were prepared by pressureless sintering in air. Calcined bauxite, talc and commercial alumina powder were used as the main raw materials, partially stabilized zirconia was also added to improve the thermal shock resistance of the samples. The effects of composition and sintering temperature on density, phase composition, microstructure and thermal shock behavior of samples were evaluated. It shows that the B2 sample which was sintered at 1400 °C for 2 h has optimal properties with porosity 0.4%, bulk density 3.2 g•cm-3.The bending strength increases 19.46 MPa after 30 times thermal shock cycles from 1100 °C to room temperature. The main phases of B2 are corundum and spinel, meanwhile, a small amount of monoclinic zirconia and α-quartz are also detected according to XRD pattern. Microstructure analysis reveals that spinel crystals are interlocked by prismatic corundum crystals, bright white beaded monoclinic zirconia particles are distributed uniformly, and it is beneficial to improve the thermal shock resistance of sample.

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