Fabrication of Ti3AlC2/Al2O3 nanocomposite by a novel method

Zhu, Jianfeng; Ye, L.; Wang, F.

doi:10.2298/sos1103289z

Cited by 7 publications

(4 citation statements)

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“…This synthesis mechanism of Ti 3 AlC 2 produced by mechanical milling and by using elemental raw materials was reported in our previous work 16 . The MSR mechanism was also reported for the synthesizing of the Ti 3 AlC 2 ‐Al 2 O 3 composite 22–24 …”

Section: Resultssupporting

confidence: 78%

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The purity evolution of Ti₃AlC₂ MAX phase synthesized by mechanochemical route: The effect of Al content and high‐temperature annealing

Shahin,

Heidarpour,

Kazemi

2023

Engineering Reports

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This study explores the effects of excess Al and annealing at high temperature on the purity of Ti3AlC2 MAX phase synthesized by the mechanochemical route. In this regard, a constant stoichiometric ratio of Ti: Al: C = 3: 1: 2 along with three blends of nonstoichiometric ratios with excess Al (Ti: Al: C = 3: X: 2, X = 1.1, 1.2, and 1.5) were ball milled. Then, to examine the annealing at high‐temperature effects, the compacted ball‐milled powders were heated at 900 and 1200°C for 1 h. The phase identification revealed that 10 h of ball milling caused a reaction between the elemental powders, and Ti3AlC2 and TiC were formed. The mechanism of the reaction during the high‐energy ball milling process is assigned to a mechanically induced self‐propagating reaction. Addition of excess Al to primary powders caused to increase the purity of Ti3AlC2 significantly. Furthermore, annealing at high temperature leading to complete reactions of the ball‐milled powders and increased Ti3AlC2 purity. The maximum Ti3AlC2 content of 88% was obtained of initial powder of Ti: Al: C = 3: 1.2: 2 ratio after annealing at 1200°C.

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Section: Resultssupporting

confidence: 78%

“…16 The MSR mechanism was also reported for the synthesizing of the Ti 3 AlC 2 -Al 2 O 3 composite. [22][23][24] Moreover, according to the morphology of the 10-h ball milled powder presented in our previous research 16 the layered structure of Ti 3 AlC 2 and the granular grains of TiC particles could be clearly seen.…”

Section: Ball Milling Processmentioning

confidence: 69%

The purity evolution of Ti₃AlC₂ MAX phase synthesized by mechanochemical route: The effect of Al content and high‐temperature annealing

Shahin,

Heidarpour,

Kazemi

2023

Engineering Reports

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“…Thus, the existence of a few un-reacted TiC and in situ formed Al 2 O 3 may act as another important reason to increase the flexural strength of Ti 3 AlC 2 effectively [22] . In order to analyze the strengthening mechanism of bulk Ti 3 AlC 2 sintered at 1300 and 1400 °C , the fractures of bulk Ti 3 AlC 2 are obtained by SEM.…”

Section: Mechanical Properties and Fracture Analysis Of Bulk Ti 3 Alcmentioning

confidence: 99%

Reactive Synthesis of Polycrystalline Ti 3 AlC 2 and Its Sintering Behavior

Tang

Feng

Huang

et al. 2017

Rare Metal Materials and Engineering

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A method for fabrication of ternary compound Ti3AlC2 powder by pressureless calcining (PC) technique was developed. Powders of Ti, Al and TiC were mixed as staring materials. The effects of calcining temperature and aluminum content on the purity of Ti3AlC2 were discussed. The reaction mechanism and the microstructure evolution of Ti3AlC2 prepared at different temperatures were investigated by X-ray diffraction, field emission scanning electron microscopy and high resolution transmission electron microscopy. Results indicate that the single-phase polycrystalline Ti3AlC2 powders are obtained at 1300 °C , which possesses a typical laminated structure, and the best molar ratio of raw Ti/Al/TiC materials is 1:1.2:2. The bulk samples sintered by hot pressing were from the Ti3AlC2 powders. After hot pressing of different temperatures, the fully dense bulk Ti3AlC2 shows the best properties when prepared at 1300 °C. The density of bulk Ti3AlC2 reaches to 99.9%. The average Vickers hardness is around 5.7 GPa, and the maximum flexural strength is over 630 MPa. Finally the strengthening mechanism of the bulk Ti3AlC2 was also proposed.

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“…The unique combination of excellent properties of Ti3AlC2 or Ti3SiC2, including high melting point, high hardness, high elastic modulus, good thermal and electrical conductivity, and considerable chemical stability, make them to be fascinating candidates for various application. Moreover, elemental metal powder-derived MAX materials have demonstrated to be effective reinforcement in TiB2 [39][40][41] , Al2O3 [42][43][44] composites with enhanced mechanical properties by in situ reaction. More recently, as explicated in our previous work [45][46][47][48][49] , titanium aluminum carbide (Ti3AlC2) was chosen as an effective sintering aid to effectively densify B4C ceramics with enhanced sintering ability and mechanical performance simultaneously.…”

Section: Introductionmentioning

confidence: 99%

C0.3N0.7Ti-SiC Toughed Silicon Nitride Hybrids with Non-Oxide Additives Ti3SiC2

Luo

Deng

et al. 2020

Preprint

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In-situ grown C0.3N0.7Ti and SiC, which derived from non-oxide additives Ti3SiC2, are proposed to densify silicon nitride (Si3N4) ceramics with enhanced mechanical performance. Remarkable increase of density from 79.20% to 95.48% could be achieved for Si3N4 ceramics with 5vol% Ti3SiC2. The capillarity of decomposed Si from Ti3SiC2, and in-situ reaction between nonstoichiometric TiCx and Si3N4 were believed to be responsible for densification of Si3N4 ceramics. An obvious enhancement of flexural strength and fracture toughness for Ti3SiC2 doped Si3N4 ceramics was observed. The maximum flexural strength of 795 MPa for Si3N4 composites with 5vol% Ti3SiC2 and maximum fracture toughness of 6.97 MPa.m1/2 for Si3N4 composites with 20vol% Ti3SiC2 are achieved when mixed powders are hot-press sintered at 1700℃. Pull out of elongated Si3N4 grains, crack bridging, crack branching and crack deflection were demonstrated to dominate enhance fracture toughness of Si3N4 composites.

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Fabrication of Ti3AlC2/Al2O3 nanocomposite by a novel method

Cited by 7 publications

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The purity evolution of Ti₃AlC₂ MAX phase synthesized by mechanochemical route: The effect of Al content and high‐temperature annealing

The purity evolution of Ti₃AlC₂ MAX phase synthesized by mechanochemical route: The effect of Al content and high‐temperature annealing

Reactive Synthesis of Polycrystalline Ti 3 AlC 2 and Its Sintering Behavior

C<sub>0.3</sub>N<sub>0.7</sub>Ti-SiC Toughed Silicon Nitride Hybrids with Non-Oxide Additives Ti<sub>3</sub>SiC<sub>2</sub>

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Fabrication of Ti3AlC2/Al2O3 nanocomposite by a novel method

Cited by 7 publications

References 0 publications

The purity evolution of Ti3AlC2 MAX phase synthesized by mechanochemical route: The effect of Al content and high‐temperature annealing

The purity evolution of Ti3AlC2 MAX phase synthesized by mechanochemical route: The effect of Al content and high‐temperature annealing

Reactive Synthesis of Polycrystalline Ti 3 AlC 2 and Its Sintering Behavior

C<sub>0.3</sub>N<sub>0.7</sub>Ti-SiC Toughed Silicon Nitride Hybrids with Non-Oxide Additives Ti<sub>3</sub>SiC<sub>2</sub>

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The purity evolution of Ti₃AlC₂ MAX phase synthesized by mechanochemical route: The effect of Al content and high‐temperature annealing

The purity evolution of Ti₃AlC₂ MAX phase synthesized by mechanochemical route: The effect of Al content and high‐temperature annealing