Synthesis of ternary compounds of the Ti-Al-C system at high pressures and temperatures

Starostina, Alexandra; Prikhna, T. A.; Karpets, M. V.; Дуб, С. Н.; Chartier, Patrick; Cabiosh, T.; Sverdun, V. B.; Moshchil, Viktor; Kozyrev, Artem

doi:10.3103/s1063457611050042

Cited by 9 publications

(7 citation statements)

References 13 publications

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“…Ti 3 AlC 2 was discovered in the Ti-Al-C ternary system [40]. Starostina et al [15] had synthesized Ti 2 AlC-based composites from 3Ti/1.2Al/2C at 800-1200 °C under 1-2 GPa. Earlier, the authors had successfully fabricated Ti 3 SiC 2 -cBN composites [16], and Ti 3 AlC 2 -cBN composites [14] under 4.5 GPa by HPHT.…”

Section: Possible Mechanism Of the Preparation Of Ti 2 Alc Ormentioning

confidence: 99%

“…Li et al fabricated Ti 3 AlC 2 -cBN [41] composites at 1350 °C and Ti 3 AlC 2 -Al-cBN [42] composites at 1200-1500 °C under 5.5 GPa. However, Qin et al [35] Ti 3 AlC 2 Ti 2 AlC Ti 3 Al [15] TiC 1400 1300 1200 1100 Temperature (°C) Pressure (GPa) 1000 900 800 [15] [15]…”

Section: Possible Mechanism Of the Preparation Of Ti 2 Alc Ormentioning

confidence: 99%

“…e highest pressure of the afore-mentioned methods is ∼200 MPa in the hot isostatic pressing (HIP, ∼200 MPa pressure). Ti 3 AlC 2 -TiC has been synthesized under the pressure of 0.5-2 GPa and a temperature of 800-1200 °C [15]. Higher pressures of up to 2 GPa can promote the formation of Ti 2 AlC and increase Vickers microhardness.…”

Section: Introductionmentioning

confidence: 99%

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The Influence of Sintering Pressure on the Preparation, Friction Properties, and Magnetic Properties of Ti2AlC-TiC and Ti3AlC2-TiC Composites Under High-Pressure and High-Temperature

Yuqi

2022

Advances in Materials Science and Engineering

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Due to their high melting point, low density, and affordable price, TiC ceramics have emerged as one of the most promising ultrahigh temperature structural materials. However, its development and usage are severely constrained by its weak mechanical characteristics. The Ti2AlC-TiC and Ti3AlC2-TiC composites were synthesized by using the laminated metal-ceramic Ti2AlC/Ti3AlC2 as the binder, combined with high-temperature and high-pressure sintering technology (GPa order of magnitude confinement system). The thermal analysis shows that the exothermic heat of Ti/1.2Al/2TiC is less than that of 3Ti/1.2Al/2C, 2Ti/1.2Al/C, and 3Ti/1.5Al/C. The ratio of Ti/1.2Al/2TiC can suppress the thermal explosion phenomenon during the sintering process and improve the safety of the high-pressure sintering process. XRD results showed that the main composition of the sintered products was Ti2AlC-TiC at 2∼3.5 GPa and Ti3AlC2-TiC at 4∼5 GPa. As the sintering pressure increased from 2 GPa to 5 GPa, the bonding phase changed from Ti2AlC to Ti3AlC2. The thickness of the synthetic Ti3AlC2 layer is near 0.1 µm under 5 GPa. The average friction coefficient of Ti2AlC-TiC composites sintered 2 GPa with POM is as low as 0.1767, while the average friction coefficient of Ti3AlC2-TiC composites with POM increased to 0.3468∼0.3797. The wear width of Ti2AlC-TiC is lower than that of Ti3AlC2-TiC composites sintered under 4–4.5 GPa. The wear width of Ti3AlC2-TiC composites decreases following the rise of sintering pressure and is reduced to 0.3504 mm under 5 GPa. Ti2AlC-TiC and Ti3AlC2-TiC composites with PP ball counterparts have friction coefficients of 0.375 to 0.45 and worse wear resistance than that of POM balls. Ti3AlC2-TiC composites synthesized at 5 GPa with a Cu ball had the smallest friction coefficient (0.4558) and the smallest wear scar width (0.6289 mm). The friction coefficients and wear widths of synthetics with Al pairs ranged from 0.48–0.697 and 0.851–1.087 mm, respectively, and varied irregularly with increasing sintering pressure. Ti2AlC-TiC composites synthesized at 2 GPa with agate and glass pairs have coefficients of friction of 0.5 and 0.61, respectively. Abrasion widths of Ti2AlC-TiC composites synthesized at 2 GPa with agate and glass pairs were 1.3 mm and 0.72 mm, respectively. The friction coefficient of synthetics with agate and glass pairs increases with increasing sintering pressure. The magnetization and magnetization intensity of the Ti3AlC2-TiC composites are stronger than those of Ti3AlC2. Ti2AlC-TiC and Ti3AlC2-TiC composites held promise to serve in the field of ceramic grinding processing applications.

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Section: Possible Mechanism Of the Preparation Of Ti 2 Alc Ormentioning

confidence: 99%

Section: Possible Mechanism Of the Preparation Of Ti 2 Alc Ormentioning

confidence: 99%

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The Influence of Sintering Pressure on the Preparation, Friction Properties, and Magnetic Properties of Ti2AlC-TiC and Ti3AlC2-TiC Composites Under High-Pressure and High-Temperature

Yuqi

2022

Advances in Materials Science and Engineering

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“…The properties of the obtained materials strongly depend on the percentage of MAX phase and their final porosity. The work [6] shows the possibility of obtaining dense (up to 99 %) polycrystalline samples of MAX phases of the Ti-Al-C system by hot pressing of mixtures of Ti, TiC, and Al powders preliminarily sintered in an argon atmosphere. The workpieces obtained in this way can be used for the manufacture of both machine parts and targets or cathodes that make it possible to synthesize thin films and coatings based on MAX phases.…”

Section: Introductionmentioning

confidence: 98%

Structure and Mechanical Characteristics of Ti2AlC MAX Phase Cathodes and Deposited Ion-Plasma Coatings

Bortnitskaya¹,

Reshetnyak²,

Куприн³

et al. 2021

J. Nano- Electron. Phys.

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“…Due to the structure of MAX-phases, MAX-phase materials satisfy the highest requirements associated with high temperatures, corrosion environment and thermal cycling [1][2][3][4]. For the same reason, these materials can be used in various advanced industries, such as aircraft and aerospace engine building, electrochemical and electrical industries.…”

Section: Introductionmentioning

confidence: 99%

Heat treatment of composite based on MAX-phases of the Ti-Al-C system

et al. 2017

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Abstract. This paper studies the effect of heat treatment performed at the MAX-phases formation temperature on the phase composition of the MAX/TiC-composite formed in the Ti-Al-C system in the conditions of free SHS-compression. The dependence between the titanium carbide (TiC) content and delay time before applying the load during free SHS-compression is defined. The experimental results show that the proposed heat treatment leads to carbide content reduction.

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Synthesis of ternary compounds of the Ti-Al-C system at high pressures and temperatures

Cited by 9 publications

References 13 publications

The Influence of Sintering Pressure on the Preparation, Friction Properties, and Magnetic Properties of Ti2AlC-TiC and Ti3AlC2-TiC Composites Under High-Pressure and High-Temperature

The Influence of Sintering Pressure on the Preparation, Friction Properties, and Magnetic Properties of Ti2AlC-TiC and Ti3AlC2-TiC Composites Under High-Pressure and High-Temperature

Structure and Mechanical Characteristics of Ti2AlC MAX Phase Cathodes and Deposited Ion-Plasma Coatings

Heat treatment of composite based on MAX-phases of the Ti-Al-C system

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