Slip casting and pressureless sintering of Ti3AlC2

Gong, Yimin; Tian, Wenbin; Zhang, Peigen; Chen, Jian; Zhang, Yamei; Sun, ZhengMing

doi:10.1007/s40145-019-0318-4

Cited by 45 publications

(18 citation statements)

References 33 publications

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“…MXenes is a family of novel two-dimensional materials that was successfully synthesized in 2011 [1]. MXene was prepared by exfoliating the A-group element from the MAX phase [1][2][3][4][5][6] with a formula of M n+1 AX n , where M is an early transition metal, A is an III or IV A-group element, and X is C and/or N. Because MXenes were made in an aqueous solution of F -, the surfaces of MXenes are always terminated with F, O, and OH [7][8][9]. Ti 3 C 2 is the first extensively studied MXene [1] and widely applied in energy storage [10][11][12][13][14][15][16][17].…”

Section: Introduction mentioning

confidence: 99%

Synthesis and electrochemical properties of V2C MXene by etching in opened/closed environments

Wang

et al. 2020

J Adv Ceram

112

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The effect of etching environment (opened or closed) on the synthesis and electrochemical properties of V2C MXene was studied. V2C MXene samples were synthesized by selectively etching of V2AlC at 90 °C in two different environments: opened environment (OE) in oil bath pans under atmosphere pressure and closed environment (CE) in hydrothermal reaction kettles under higher pressures. In OE, only NaF (sodium fluoride) + HCl (hydrochloric acid) etching solution can be used to synthesize highly pure V2C MXene. However, in CE, both LiF (lithium fluoride) + HCl and NaF+HCl etchant can be used to prepare V2C MXene. Moreover, the V2C MXene samples made in CE had higher purity and better-layered structure than those made in OE. Although the purity of V2C obtained by LiF+HCl is lower than that of V2C obtained using NaF+HCl, it shows better electrochemical performance as anodes of lithium-ion batteries (LIBs). Therefore, etching in CE is a better method for preparing highly pure V2C MXene, which provides a reference for expanding the synthesis methods of V2C with better electrochemical properties.

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Section: Introduction mentioning

confidence: 99%

Synthesis and electrochemical properties of V2C MXene by etching in opened/closed environments

Wang

et al. 2020

J Adv Ceram

112

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“…Ti 3 AlC 2 particles can be dispersed in basic pH, particularly at pH 10 and using 1 wt% of Arabic gum as dispersant. 253 The green compacts were densified at 1450°C for 90 minutes using an Al 4 C 3 powder bed, achieving 95.3% relative density and a low content of impurities. Recently, Ti 3 SiC 2 tubes have been processed by slip casting as a proof of concept for nuclear fuel cladding.…”

Section: Near Net Shapingmentioning

confidence: 99%

“…The relative densities of green bodies were 61% and PLS samples was 96%. Ti 3 AlC 2 particles can be dispersed in basic pH, particularly at pH 10 and using 1 wt% of Arabic gum as dispersant 253 . The green compacts were densified at 1450°C for 90 minutes using an Al 4 C 3 powder bed, achieving 95.3% relative density and a low content of impurities.…”

Section: Structuresmentioning

confidence: 99%

Processing of MAX phases: From synthesis to applications

2020

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MAX phases are well-known and established due to their unique combination of properties and versatility, but this family of materials has experienced several ups and downs during its short history, including even being referred to with different names. Extensive work was carried out in the early 1960s in Vienna (Austria) by Wolfgang Jeitschko and Hans Nowotny, who discovered in more than 100 new carbides and nitrides. 1 Among them, they reported a new class of ternary systems, based on a transition metal (M), a metalloid (Me), and carbon (C), with a similar crystal structure to carbon-stabilized β-manganese phase, that is, Mo 3 Al 2 C. They were classified as "H-Phases" due to their hexagonal crystal structure, and some compositions

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“…When the indentation load was up to 300 N, the residual flexural strength of 343.9 MPa is still about 84% of the strength of undamaged samples. Mo 2 TiAlC 2 ceramic possesses a good damage tolerance like Ti 3 AlC 2 [55].…”

Section: Table 2 Comparative Analysis Of Physical and Mechanical Propmentioning

confidence: 99%

Synthesis, microstructure, and properties of high purity Mo2TiAlC2 ceramics fabricated by spark plasma sintering

Niu

Zhang

et al. 2020

J Adv Ceram

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The synthesis, microstructure, and properties of high purity dense bulk Mo2TiAlC2 ceramics were studied. High purity Mo2TiAlC2 powder was synthesized at 1873 K starting from Mo, Ti, Al, and graphite powders with a molar ratio of 2:1:1.25:2. The synthesis mechanism of Mo2TiAlC2 was explored by analyzing the compositions of samples sintered at different temperatures. It was found that the Mo2TiAlC2 phase was formed from the reaction among Mo3Al2C, Mo2C, TiC, and C. Dense Mo2TiAlC2 bulk sample was prepared by spark plasma sintering (SPS) at 1673 K under a pressure of 40 MPa. The relative density of the dense sample was 98.3%. The mean grain size was 3.5 μm in length and 1.5 μm in width. The typical layered structure could be clearly observed. The electrical conductivity of Mo2TiAlC2 ceramic measured at the temperature range of 2–300 K decreased from 0.95 × 106 to 0.77 × 106 Ω–1·m–1. Thermal conductivity measured at the temperature range of 300–1273 K decreased from 8.0 to 6.4 W·(m·K)–1. The thermal expansion coefficient (TEC) of Mo2TiAlC2 measured at the temperature of 350–1100 K was calculated as 9.0 × 10–6 K–1. Additionally, the layered structure and fine grain size benefited for excellent mechanical properties of low intrinsic Vickers hardness of 5.2 GPa, high flexural strength of 407.9 MPa, high fracture toughness of 6.5 MPa·m1/2, and high compressive strength of 1079 MPa. Even at the indentation load of 300 N, the residual flexural strength could hold 84% of the value of undamaged one, indicating remarkable damage tolerance. Furthermore, it was confirmed that Mo2TiAlC2 ceramic had a good oxidation resistance below 1200 K in the air.

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Slip casting and pressureless sintering of Ti3AlC2

Cited by 45 publications

References 33 publications

Synthesis and electrochemical properties of V2C MXene by etching in opened/closed environments

Synthesis and electrochemical properties of V2C MXene by etching in opened/closed environments

Processing of MAX phases: From synthesis to applications

Synthesis, microstructure, and properties of high purity Mo2TiAlC2 ceramics fabricated by spark plasma sintering

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