High-temperature behaviour of V2AlC powders under nitrogen atmosphere

Xing, Guangchao; Deng, Chengji; Di, Jiancheng; Ding, Jun; Zhu, Hao; Yu, Chao

doi:10.1016/j.ceramint.2022.01.335

Cited by 8 publications

(3 citation statements)

References 58 publications

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“…The atmosphere water vapor has complex temporal and spatial changes, and accurately measuring, modeling, and predicting the content and changes of water vapor is of great importance for studying the greenhouse effect and climate change. With the continuous expansion of Global Navigation Satellite System (GNSS) and its related fields, GNSS technology used to study the atmosphere water vapor spatial distribution (AWVSD) has made significant progress [4,5]. To achieve a more accurate solution of water vapor distribution, research is conducted on the estimation of atmospheric precipitable water volume (PWV) based on GNSS technology, and the idea of removal interpolation restoration is introduced to optimize the accuracy of the calculation.…”

Section: Introductionmentioning

confidence: 99%

The Spatial Distribution of Atmospheric Water Vapor Based on Analytic Hierarchy Process and Genetic Algorithm

Wei,

Liu,

Guo

et al. 2023

IJACSA

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The inversion of water vapor spatial distribution using ground-based global navigation satellite systems is a technique that utilizes the propagation delay of satellite signals in the atmosphere to retrieve atmospheric water vapor information. To further promote the accuracy of the information obtained by this method, a satellite system is designed to solve the spatial distribution of atmospheric water vapor based on chromatography technology and genetic algorithm. Firstly, the accuracy of the empirical air temperature and pressure model to calculate the zenith statics delay is analyzed. To optimize the global weighted average temperature model, a model that considers the decreasing rate of atmospheric weighted average temperature and a model based on the linear relationship between surface heat and weighted average temperature are proposed. The idea of removal interpolation restoration is introduced to achieve regional interpolation of atmospheric precipitable water. Finally, in response to the problem of multiple solutions in the current water vapor chromatography equation, a genetic algorithm based chromatography method is put forward to achieve the solution of atmospheric water vapor spatial distribution. The experimental analysis shows that the average root mean square error and average absolute error of the design method of the research institute are 1.78g/m3 and 1.41g/m3, respectively, which can realize the calculation of atmospheric water vapor density distribution with high accuracy.

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Section: Introductionmentioning

confidence: 99%

The Spatial Distribution of Atmospheric Water Vapor Based on Analytic Hierarchy Process and Genetic Algorithm

Wei,

Liu,

Guo

et al. 2023

IJACSA

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“…For simplicity and efficiency, heat-treating singlephase ternary carbide is a promising and attractive method for composites because only one single raw material is required, with the homogeneous chemical composition. 5,[18][19][20][21] Al 4 O 4 C is a promising compound for high-temperature applications and refractory because of their high melting point (1890 • C), low density (2.684 g/cm 3 ), and excellent oxidation resistance. [21][22][23][24][25][26][27] The study on high-temperature behavior of pressed Al 4 O 4 C pellets under a nitrogen atmosphere indicated that a nitride layer generated on the surface and thereby slowed the nitrogen diffusion into the substrate.…”

Section: Introductionmentioning

confidence: 99%

“…For simplicity and efficiency, heat‐treating single‐phase ternary carbide is a promising and attractive method for composites because only one single raw material is required, with the homogeneous chemical composition 5,18–21 . Al 4 O 4 C is a promising compound for high‐temperature applications and refractory because of their high melting point (1890°C), low density (2.684 g/cm 3 ), and excellent oxidation resistance 21–27 .…”

Section: Introductionmentioning

confidence: 99%

A novel strategy for the fabrication of AlN–AlON refractories: Nitrogen gas pressure sintering of Al₄O₄C

Zheng

Xing

et al. 2022

J Am Ceram Soc.

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A novel strategy was exploited for the fabrication of AlN-AlON refractories via nitrogen gas pressure sintering of Al 4 O 4 C. The phase transformation and microstructure evolution during the reaction at 1600-1800 • C were thoroughly investigated. The results indicated that the high N 2 pressure was essential for the effective nitridation. The in situ generated AlN-AlON refractories had a homogeneous local chemical composition, and the (101) plane of AlN and the (222) lattice plane of Al 5 O 6 N were bonded at their grain boundary with no amorphous phase. The as-fabricated AlN-AlON refractories treated at 1700 • C by a 20 atmnitrogen pressure exhibited an optimum bending strength of 111.10 MPa, combining an apparent porosity of 20% with a low bulk density of 1.97 g/cm 3 . The diffusion of the generated oxygen led to an increase in the apparent porosity and decrease in the bulk density at 1800 • C. Furthermore, the fabrication mechanism of AlN-AlON refractories under the nitrogen gas-pressure was discussed.

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Enhanced oxidation resistance of low-carbon MgO–C refractories with ternary carbides: a review

Dong

Chen

et al. 2022

J. Iron Steel Res. Int.

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High-temperature behaviour of V2AlC powders under nitrogen atmosphere

Cited by 8 publications

References 58 publications

The Spatial Distribution of Atmospheric Water Vapor Based on Analytic Hierarchy Process and Genetic Algorithm

The Spatial Distribution of Atmospheric Water Vapor Based on Analytic Hierarchy Process and Genetic Algorithm

A novel strategy for the fabrication of AlN–AlON refractories: Nitrogen gas pressure sintering of Al₄O₄C

Enhanced oxidation resistance of low-carbon MgO–C refractories with ternary carbides: a review

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High-temperature behaviour of V2AlC powders under nitrogen atmosphere

Cited by 8 publications

References 58 publications

The Spatial Distribution of Atmospheric Water Vapor Based on Analytic Hierarchy Process and Genetic Algorithm

The Spatial Distribution of Atmospheric Water Vapor Based on Analytic Hierarchy Process and Genetic Algorithm

A novel strategy for the fabrication of AlN–AlON refractories: Nitrogen gas pressure sintering of Al4O4C

Enhanced oxidation resistance of low-carbon MgO–C refractories with ternary carbides: a review

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A novel strategy for the fabrication of AlN–AlON refractories: Nitrogen gas pressure sintering of Al₄O₄C