Reaction Synthesis of Cr2AlC Ceramics Powders

Chun Long Guan; Zi Ping Zhang; Ying Chun Shan; Chun Hua Wang

doi:10.4028/www.scientific.net/AMR.624.13

Paper Titles

Preface

Growth and Morphology of β-Si₃N₄ Nano-Belts by Carbothermal Reduction Nitridation of Used Silica Refractory Brick
p.1

Influence of Nitrogen Pressure and TiN Addition on Combustion Synthesis of Ti₂AlN Powders
p.5

The Effect of Different Preparation Methods on the Microstructure of Zirconium Diboride Ceramic Powder
p.9

Reaction Synthesis of Cr₂AlC Ceramics Powders
p.13

Phase and Microstructure Evolution of Mullite Synthesized from Coal Gangue and γ-Al₂O₃
p.17

Preparation and their Fluorescent Property of Sm₂Zr₂O₇ and Sm₂(Zr_0.7Ce_0.3)₂O₇ Powders
p.22

Preparation and Characterization of LaAlO₃ via Sol-Gel Process
p.26

Preparation and Characterization of Bi-Doped LaAlO₃ via Sol-Gel Process
p.30

HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 624Reaction Synthesis of Cr2AlC Ceramics Powders

Reaction Synthesis of Cr₂AlC Ceramics Powders

Abstract:

Polycrystalline Cr₂AlC was fabricated by a solid reaction synthesis of a mixture of Cr, Al and graphite powders in a flowing or the atmosphere in the temperature range of 700 to 1450 °C. The products for identification and analysis were characterized by X-ray diffraction (XRD). The effects of the composition of the initial elemental powders and temperature of purity and formation of Cr₂AlC were examined. It is found that the co-existence of Cr₇C₃ with Cr₂AlC is attributed to the surplus of carbon in the starting powders at 1350 °C, selecting the starting materials with a Cr: Al: C molar ratio of 2: (1.1-1.6): 1. For sample obtained from the starting elemental powders with the Cr: Al: C molar ratio of 2: 1.2: 0.94, no other phases but Cr₂AlC were detected. In addition, the effect of temperature on the formation of Cr₂AlC ceramic powders was carried out.

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Periodical:

Advanced Materials Research (Volume 624)

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13-16

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.624.13

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Online since:

December 2012

Authors:

Chun Long Guan, Zi Ping Zhang, Ying Chun Shan, Chun Hua Wang

Keywords:

Composition, Cr₂AlC, Reaction Synthesis, X-Ray Diffraction (XRD)

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References

[1] W.Jeitschko, H. Nowotny, and F. Benesovsky, Carbon-containing ternary compounds (H-phase), Monatshefte fuer Chemie. 94 (1963) 672-676.

DOI: 10.1007/bf00913068

Google Scholar

[2] J.C. Schuster, H. Nowotny, and C. Vaccaro, The ternary systems: CrAlC, VAlC, and TiAlC and the behavior of H-phases (M2AlC). Journal of Solid State Chemistry, 32(1980) 213-219.

DOI: 10.1016/0022-4596(80)90569-1

Google Scholar

[3] Z.M, Sun, S, Li, Rajeev, Ahuja, and Jochen. M. Schneider, Calculated elastic properties of M2AlC (M=Ti, V, Cr, Nb and Ta), Solid state communications, 129(2004) 589-592.

DOI: 10.1016/j.ssc.2003.12.008

Google Scholar

[4] W.B. Tian, P. Wang, G. Zhang, Y. Kan, and Y. Li, Mechanical properties of Cr2AlC ceramics. Journal of the American Ceramic Society, 90(2007) 1663-1666.

Google Scholar

[5] J.D. Hettinger, S.E. Lofland, P. Finkel et al., Electrical transport, thermal transport, and elastic properties of M2 AlC (M= Ti, Cr, Nb, and V). Physical Review B, 72(2005)115-120.

Google Scholar

[6] Z.J. Lin, M.S. Li, J.Y. Wang et al., High-temperature oxidation and hot corrosion of Cr2 AlC. Acta Materialia,. 55(2007) 6182-6191.

DOI: 10.1016/j.actamat.2007.07.024

Google Scholar

[7] Z. J. Lin, Y. C. Zhou, M. S. Li, et al., Synthesis, Microstructure, and Property of Cr2AlC, J. Mater. Sci. Technol. 23(2007)721-746.

Google Scholar

[8] C.L. Guan, G.Q. Liu, and Y.C. Shan, Phase Formation Route of Cr2AlC Ceramics from Cr, Al and Graphite Powders. Advanced Materials Research, Chinese Ceramics Communications (2010)

DOI: 10.4028/www.scientific.net/amr.105-106.192

Google Scholar