The Experts below are selected from a list of 58866 Experts worldwide ranked by ideXlab platform
Hongneng Cai - One of the best experts on this subject based on the ideXlab platform.
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extend the thermal cyclic lifetime of la2zr2o7 ysz dcl tbcs by reducing modulus design on a toughening Ceramic Surface
Surface & Coatings Technology, 2019Co-Authors: Zhiyuan Wei, Bo Cheng, Jun Wang, Meijun Liu, Hongneng CaiAbstract:Abstract La2Zr2O7 (LZO), a potential thermal barrier coating material, is extensively used for components bearing remarkably higher temperatures due to its phase stability up to 2300 °C, but the lifetime of the pure LZO coatings is generally limited by the low toughness due to the cracking driving force. In this study, to decrease the driving force facilitating the failure of LZO layer and then extend the durability of thermal barrier coatings (TBCs), reducing modulus design on a toughening Ceramic Surface is introduced into the system. Three groups of LZO/YSZ double Ceramic layers (DCL) TBCs with different low/high modulus (E) combination are used to satisfy the design. The crack driving force is evaluated by the strain energy release rate (SERR) at the tip of the LZO/YSZ interface crack. The total SERR G decreases from 28.2 N/m to 20.6 N/m when the thickness of low E LZO layer increases from 0 to 2 units (1 unit = 48 μm low E LZO), which reduces the cracking driving force of TBCs. After subjected to the gradient thermal cyclic tests with the Surface temperature of 1300 °C. The TBCs system with 2 low E LZO shows the longest lifetime, which is 50% higher than that of pure YSZ TBCs. Thereby, reducing modulus design on a toughening Ceramic Surface may provide an alternative approach to improve the durability of TBCs.
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Extend the thermal cyclic lifetime of La2Zr2O7/YSZ DCL TBCs by reducing modulus design on a toughening Ceramic Surface
Surface and Coatings Technology, 2019Co-Authors: Zhiyuan Wei, Bo Cheng, Jun Wang, Meijun Liu, Hongneng CaiAbstract:Abstract La2Zr2O7 (LZO), a potential thermal barrier coating material, is extensively used for components bearing remarkably higher temperatures due to its phase stability up to 2300 °C, but the lifetime of the pure LZO coatings is generally limited by the low toughness due to the cracking driving force. In this study, to decrease the driving force facilitating the failure of LZO layer and then extend the durability of thermal barrier coatings (TBCs), reducing modulus design on a toughening Ceramic Surface is introduced into the system. Three groups of LZO/YSZ double Ceramic layers (DCL) TBCs with different low/high modulus (E) combination are used to satisfy the design. The crack driving force is evaluated by the strain energy release rate (SERR) at the tip of the LZO/YSZ interface crack. The total SERR G decreases from 28.2 N/m to 20.6 N/m when the thickness of low E LZO layer increases from 0 to 2 units (1 unit = 48 μm low E LZO), which reduces the cracking driving force of TBCs. After subjected to the gradient thermal cyclic tests with the Surface temperature of 1300 °C. The TBCs system with 2 low E LZO shows the longest lifetime, which is 50% higher than that of pure YSZ TBCs. Thereby, reducing modulus design on a toughening Ceramic Surface may provide an alternative approach to improve the durability of TBCs.
V. V. Kuzin - One of the best experts on this subject based on the ideXlab platform.
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Basic Framework for Computer-Aided Engineering of Polished Ceramic Surface Layers
Refractories and Industrial Ceramics, 2020Co-Authors: V. V. Kuzin, S. N. Grigor’ev, M. A. VolosovaAbstract:We describe a basic framework for computer-aided engineering of polished Ceramic Surface layers. This framework is based on two computational models, a mathematical model, and various algorithms for steady-state and non-steady-state thermoelasticity, an automated thermal stability calculation system and methodology for calculating horizontal and vertical motion, temperature, stress, and stress intensity using the test-point method.
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Correlation of Diamond Grinding Regimes with Si 3 N 4 -Ceramic Surface Quality
Refractories and Industrial Ceramics, 2017Co-Authors: V. V. Kuzin, S. Yu. Fedorov, S. N. Grigor’evAbstract:Results are provided for a study of the effect of Surface grinding regimes with diamond wheels on Si3N4-Ceramic Surface condition. A correlation is established of grinding depth, longitudinal and transverse feed, with machined Surface roughness, waviness, and morphology, and Si3N4-Ceramic Surface layer structure.
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Nitride Ceramic Surface Layer Stressed State Transformation with a Change in TiC-coating Thickness. Stress Version — Heat Flow
Refractories and Industrial Ceramics, 2017Co-Authors: V. V. Kuzin, M. Yu. Fedorov, Marina VolosovaAbstract:The effect of titanium carbide coating thickness on transformation of the stressed state of a Si3N4–TiC–Y2O3-Ceramic Surface layer under action of heat flow is studied. It is established as a result of numerical experiments that an increase in TiC coating thickness from 5 to 15 μm, applied to nitride Ceramic, leads to a reduction in Ceramic temperature, and increase in σ11, σ22, σ12, and σ i , and indices of their structural inhomogeneity in a Ceramic Surface layer.
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Correlation of Diamond Grinding Regimes with Al2O3–TiC-Ceramic Surface Condition
Refractories and Industrial Ceramics, 2017Co-Authors: V. V. Kuzin, S. Yu. FedorovAbstract:Results are given for a study of the effect of Surface grinding regimes with diamond wheels on the Surface condition of reaction-sintered Ceramic based on silicon carbide (SiSiC-Ceramic). The effect on machined Surface is revealed for grinding depth, longitudinal and transverse feed on roughness, waviness, and morphology. It is established that a SiSiC-Ceramic Surface after grinding has an original morphological picture.
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Correlation of Diamond Grinding Regimes with Al_2O_3–TiC-Ceramic Surface Condition
Refractories and Industrial Ceramics, 2017Co-Authors: V. V. Kuzin, S. Yu. FedorovAbstract:Results are provided for a study of the effect of planar grinding regimes with diamond wheels on Al_2O_3–TiC-Ceramic Surface condition. A correlation is established for grinding depth, and longitudinal and transverse feed with roughness, waviness, and morphology of a machined Surface. The correlations revealed are planned for application in creating methodology for standardizing the precision of Ceramic components and its production provision.
Zhiyuan Wei - One of the best experts on this subject based on the ideXlab platform.
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extend the thermal cyclic lifetime of la2zr2o7 ysz dcl tbcs by reducing modulus design on a toughening Ceramic Surface
Surface & Coatings Technology, 2019Co-Authors: Zhiyuan Wei, Bo Cheng, Jun Wang, Meijun Liu, Hongneng CaiAbstract:Abstract La2Zr2O7 (LZO), a potential thermal barrier coating material, is extensively used for components bearing remarkably higher temperatures due to its phase stability up to 2300 °C, but the lifetime of the pure LZO coatings is generally limited by the low toughness due to the cracking driving force. In this study, to decrease the driving force facilitating the failure of LZO layer and then extend the durability of thermal barrier coatings (TBCs), reducing modulus design on a toughening Ceramic Surface is introduced into the system. Three groups of LZO/YSZ double Ceramic layers (DCL) TBCs with different low/high modulus (E) combination are used to satisfy the design. The crack driving force is evaluated by the strain energy release rate (SERR) at the tip of the LZO/YSZ interface crack. The total SERR G decreases from 28.2 N/m to 20.6 N/m when the thickness of low E LZO layer increases from 0 to 2 units (1 unit = 48 μm low E LZO), which reduces the cracking driving force of TBCs. After subjected to the gradient thermal cyclic tests with the Surface temperature of 1300 °C. The TBCs system with 2 low E LZO shows the longest lifetime, which is 50% higher than that of pure YSZ TBCs. Thereby, reducing modulus design on a toughening Ceramic Surface may provide an alternative approach to improve the durability of TBCs.
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Extend the thermal cyclic lifetime of La2Zr2O7/YSZ DCL TBCs by reducing modulus design on a toughening Ceramic Surface
Surface and Coatings Technology, 2019Co-Authors: Zhiyuan Wei, Bo Cheng, Jun Wang, Meijun Liu, Hongneng CaiAbstract:Abstract La2Zr2O7 (LZO), a potential thermal barrier coating material, is extensively used for components bearing remarkably higher temperatures due to its phase stability up to 2300 °C, but the lifetime of the pure LZO coatings is generally limited by the low toughness due to the cracking driving force. In this study, to decrease the driving force facilitating the failure of LZO layer and then extend the durability of thermal barrier coatings (TBCs), reducing modulus design on a toughening Ceramic Surface is introduced into the system. Three groups of LZO/YSZ double Ceramic layers (DCL) TBCs with different low/high modulus (E) combination are used to satisfy the design. The crack driving force is evaluated by the strain energy release rate (SERR) at the tip of the LZO/YSZ interface crack. The total SERR G decreases from 28.2 N/m to 20.6 N/m when the thickness of low E LZO layer increases from 0 to 2 units (1 unit = 48 μm low E LZO), which reduces the cracking driving force of TBCs. After subjected to the gradient thermal cyclic tests with the Surface temperature of 1300 °C. The TBCs system with 2 low E LZO shows the longest lifetime, which is 50% higher than that of pure YSZ TBCs. Thereby, reducing modulus design on a toughening Ceramic Surface may provide an alternative approach to improve the durability of TBCs.
Meijun Liu - One of the best experts on this subject based on the ideXlab platform.
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extend the thermal cyclic lifetime of la2zr2o7 ysz dcl tbcs by reducing modulus design on a toughening Ceramic Surface
Surface & Coatings Technology, 2019Co-Authors: Zhiyuan Wei, Bo Cheng, Jun Wang, Meijun Liu, Hongneng CaiAbstract:Abstract La2Zr2O7 (LZO), a potential thermal barrier coating material, is extensively used for components bearing remarkably higher temperatures due to its phase stability up to 2300 °C, but the lifetime of the pure LZO coatings is generally limited by the low toughness due to the cracking driving force. In this study, to decrease the driving force facilitating the failure of LZO layer and then extend the durability of thermal barrier coatings (TBCs), reducing modulus design on a toughening Ceramic Surface is introduced into the system. Three groups of LZO/YSZ double Ceramic layers (DCL) TBCs with different low/high modulus (E) combination are used to satisfy the design. The crack driving force is evaluated by the strain energy release rate (SERR) at the tip of the LZO/YSZ interface crack. The total SERR G decreases from 28.2 N/m to 20.6 N/m when the thickness of low E LZO layer increases from 0 to 2 units (1 unit = 48 μm low E LZO), which reduces the cracking driving force of TBCs. After subjected to the gradient thermal cyclic tests with the Surface temperature of 1300 °C. The TBCs system with 2 low E LZO shows the longest lifetime, which is 50% higher than that of pure YSZ TBCs. Thereby, reducing modulus design on a toughening Ceramic Surface may provide an alternative approach to improve the durability of TBCs.
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Extend the thermal cyclic lifetime of La2Zr2O7/YSZ DCL TBCs by reducing modulus design on a toughening Ceramic Surface
Surface and Coatings Technology, 2019Co-Authors: Zhiyuan Wei, Bo Cheng, Jun Wang, Meijun Liu, Hongneng CaiAbstract:Abstract La2Zr2O7 (LZO), a potential thermal barrier coating material, is extensively used for components bearing remarkably higher temperatures due to its phase stability up to 2300 °C, but the lifetime of the pure LZO coatings is generally limited by the low toughness due to the cracking driving force. In this study, to decrease the driving force facilitating the failure of LZO layer and then extend the durability of thermal barrier coatings (TBCs), reducing modulus design on a toughening Ceramic Surface is introduced into the system. Three groups of LZO/YSZ double Ceramic layers (DCL) TBCs with different low/high modulus (E) combination are used to satisfy the design. The crack driving force is evaluated by the strain energy release rate (SERR) at the tip of the LZO/YSZ interface crack. The total SERR G decreases from 28.2 N/m to 20.6 N/m when the thickness of low E LZO layer increases from 0 to 2 units (1 unit = 48 μm low E LZO), which reduces the cracking driving force of TBCs. After subjected to the gradient thermal cyclic tests with the Surface temperature of 1300 °C. The TBCs system with 2 low E LZO shows the longest lifetime, which is 50% higher than that of pure YSZ TBCs. Thereby, reducing modulus design on a toughening Ceramic Surface may provide an alternative approach to improve the durability of TBCs.
Bo Cheng - One of the best experts on this subject based on the ideXlab platform.
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extend the thermal cyclic lifetime of la2zr2o7 ysz dcl tbcs by reducing modulus design on a toughening Ceramic Surface
Surface & Coatings Technology, 2019Co-Authors: Zhiyuan Wei, Bo Cheng, Jun Wang, Meijun Liu, Hongneng CaiAbstract:Abstract La2Zr2O7 (LZO), a potential thermal barrier coating material, is extensively used for components bearing remarkably higher temperatures due to its phase stability up to 2300 °C, but the lifetime of the pure LZO coatings is generally limited by the low toughness due to the cracking driving force. In this study, to decrease the driving force facilitating the failure of LZO layer and then extend the durability of thermal barrier coatings (TBCs), reducing modulus design on a toughening Ceramic Surface is introduced into the system. Three groups of LZO/YSZ double Ceramic layers (DCL) TBCs with different low/high modulus (E) combination are used to satisfy the design. The crack driving force is evaluated by the strain energy release rate (SERR) at the tip of the LZO/YSZ interface crack. The total SERR G decreases from 28.2 N/m to 20.6 N/m when the thickness of low E LZO layer increases from 0 to 2 units (1 unit = 48 μm low E LZO), which reduces the cracking driving force of TBCs. After subjected to the gradient thermal cyclic tests with the Surface temperature of 1300 °C. The TBCs system with 2 low E LZO shows the longest lifetime, which is 50% higher than that of pure YSZ TBCs. Thereby, reducing modulus design on a toughening Ceramic Surface may provide an alternative approach to improve the durability of TBCs.
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Extend the thermal cyclic lifetime of La2Zr2O7/YSZ DCL TBCs by reducing modulus design on a toughening Ceramic Surface
Surface and Coatings Technology, 2019Co-Authors: Zhiyuan Wei, Bo Cheng, Jun Wang, Meijun Liu, Hongneng CaiAbstract:Abstract La2Zr2O7 (LZO), a potential thermal barrier coating material, is extensively used for components bearing remarkably higher temperatures due to its phase stability up to 2300 °C, but the lifetime of the pure LZO coatings is generally limited by the low toughness due to the cracking driving force. In this study, to decrease the driving force facilitating the failure of LZO layer and then extend the durability of thermal barrier coatings (TBCs), reducing modulus design on a toughening Ceramic Surface is introduced into the system. Three groups of LZO/YSZ double Ceramic layers (DCL) TBCs with different low/high modulus (E) combination are used to satisfy the design. The crack driving force is evaluated by the strain energy release rate (SERR) at the tip of the LZO/YSZ interface crack. The total SERR G decreases from 28.2 N/m to 20.6 N/m when the thickness of low E LZO layer increases from 0 to 2 units (1 unit = 48 μm low E LZO), which reduces the cracking driving force of TBCs. After subjected to the gradient thermal cyclic tests with the Surface temperature of 1300 °C. The TBCs system with 2 low E LZO shows the longest lifetime, which is 50% higher than that of pure YSZ TBCs. Thereby, reducing modulus design on a toughening Ceramic Surface may provide an alternative approach to improve the durability of TBCs.