Tape Casting, Pressureless Sintering, and Grain Growth in Ti3SiC2 Compacts

Murugaiah, A.; Souchet, Alexandra; El‐Raghy, T.; Radović, Miladin; Sundberg, Mårten; Barsoum, Michel W.

doi:10.1111/j.1551-2916.2004.00550.x

Cited by 49 publications

(38 citation statements)

References 27 publications

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“…The seminal 1996 paper by Barsoum and El-Raghy [2] demonstrated hot isostatic pressing (HIP) as a method to obtain >95 % phase pure bulk Ti 3 SiC 2 . While hot-pressing has remained an important method for bulk synthesis [203,204,205,206,207,208] for research purposes, pressureless sintering [209,210,211,212,213,214,215] may be more commercially viable. Other methods for processing of bulk MAX phases are variations of self-propagating high-temperature synthesis [216,217,218,219,220], spark plasma sintering [221,222,223,224,225] or pulse discharge sintering [226,227,228,229,230,231], and solidliquid reaction synthesis [232,233,234].…”

Section: Bulk Synthesis Methodsmentioning

confidence: 99%

The M+1AX phases: Materials science and thin-film processing

et al. 2010

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This article is a critical review of the M n+1 AX n phases ("MAX phases", where n =1, 2, or 3) from a materials science perspective. MAX phases are a class of hexagonal-structure ternary carbides and nitrides ("X") of a transition metal ("M") and an A-group element. The most well known are Ti 2 AlC, Ti 3 SiC 2 , and Ti 4 AlN 3 . There are ~60 MAX phases with at least 9 discovered in the last five years alone. What makes the MAX phases fascinating and potentially useful is their remarkable combination of chemical, physical, electrical, and mechanical properties, which in many ways combine the characteristics of metals and ceramics. For example, MAX phases are typically resistant to oxidation and corrosion, elastically stiff, but at the same time they exhibit high thermal and electrical conductivities and are machinable. These properties stem from an inherently nanolaminated crystal structure, with M n+1 X n slabs intercalated with pure A-element layers. The research on MAX phases has been accelerated by the introduction of thin-film processing methods.Magnetron sputtering and arc deposition have been employed to synthesize single-crystal material by epitaxial growth, which enables studies of fundamental materials properties. However, the surface-initiated decomposition of M n+1 AX n thin films into MX compounds at temperatures of 1000-1100 °C is much lower than the decomposition temperatures typically reported for the corresponding bulk material. We also review the prospects for low-temperature synthesis, which is essential for deposition of MAX phases onto technologically important substrates. While deposition of MAX phases from the archetypical Ti-Si-C and Ti-Al-N systems typically require synthesis temperatures of ~800 °C, recent results have demonstrated that V 2 GeC and Cr 2 AlC can be deposited at ~450 °C. Also, thermal spray of Ti 2 AlC powder has been used to produce thick coatings. We further treat progress in the use of first-principles calculations for predicting hypothetical MAX phases and their properties. Together with advances in processing and materials 3 analysis, this progress has led to recent discoveries of numerous new MAX phases such as Ti 4 SiC 3 , Ta 4 AlC 3 , and Ti 3 SnC 2 . Finally, important future research directions are discussed. These include charting the unknown regions in phase diagrams to discover new equilibrium and metastable phases, as well as research challenges in understanding their physical properties, such as the effects of anisotropy, impurities, and vacancies on the electrical properties, and unexplored properties such as superconductivity, magnetism, and optics. 4

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Section: Bulk Synthesis Methodsmentioning

confidence: 99%

The M+1AX phases: Materials science and thin-film processing

et al. 2010

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“…In this study, the strongest intensity for Ti 3 SiC 2 was obtained from (104) plane and the relative intensities agreed well with calculated ones 20) based on its crystal structure. Such inconsistency with the JCPDS file in the relative intensities for Ti 3 SiC 2 was found in many XRD analyses, e.g., Ti 3 SiC 2 powder 10,[20][21][22][23][24] and surfaces of pressure-sintered Ti 3 SiC 2 polycrystals. 12,26) The pole figure analysis for surfaces of Ti 3 SiC 2 polycrystals prepared by the reactive hotpressing of Ti, SiC and C powders showed clearly that they had no preferential texture.…”

Section: Reaction Productsmentioning

confidence: 99%

“…20) These facts strongly suggest that such hot pressing as that used in this study did not bring about a particular texture in a polycrystalline Ti 3 SiC 2 due to applied pressure. According to Murugaiah et al, 24) crystal grains at free surfaces of pressureless-sintered Ti 3 SiC 2 easily have (008) orientation.…”

Section: Reaction Productsmentioning

confidence: 99%

Synthesis of TiB2-TiC-Ti3SiC2 Composites by Reactive Hot Pressing of B4C-SiC-Ti Powder Mixtures

Taimatsu

Sugiyama²,

Koseki

2008

Mater. Trans.

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TiB 2 -TiC-Ti 3 SiC 2 composites were reaction-sintered from B 4 C-xSiC-(3 þ 2x)Ti (x ¼ 0 to 1) powder mixtures using reactive hot pressing, and the phase relation of reaction products and sintering behavior were investigated. The reactionSiC 2 proceeded fundamentally during hot pressing. Although the reaction demands no production of TiC phase at x ¼ 1, TiC phase was formed due to the nonstoichiometry of TiC and Ti 3 SiC 2 phases produced. The hot-pressed composites containing the layered compound Ti 3 SiC 2 had no preferential texture. Both TiB 2 and TiC were first produced near 960 C during heating, and then Ti 3 SiC 2 near 1200 C. The product Ti 3 SiC 2 contributed effectively to the densification of the composites above 1450 C.

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“…Layered microstructural ceramics can be assembled using MAX phases, owing to their specific nanolayered crystal structure. In 2004, Murugaiah et al [12] attempted to fabricate textured Ti 3 SiC 2 ceramic by tape casting followed by pressureless sintering. A dense polycrystalline microstructure with the basal planes parallel to the surface was obtained as a result of preferential grain growth.…”

Section: Introductionmentioning

confidence: 99%

Physical and mechanical properties of highly textured polycrystalline Nb₄AlC₃ceramic

Sakka

Nishimura

et al. 2011

Science and Technology of Advanced Materials

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Highly textured polycrystalline Nb 4 AlC 3 ceramic was fabricated by slip casting in a strong magnetic field followed by spark plasma sintering. Its Lotgering orientation factor was determined on the textured top and side surfaces as f (00l) ∼ 1.0 and f (hk0) = 0.36, respectively. This ceramic showed layered microstructure at the scales ranging from nanometers to millimeters. The as-prepared ceramic had excellent anisotropic physical properties. Along the c-axis direction, it showed higher hardness, bending strength, and fracture toughness of 7.0 GPa, 881 MPa and 14.1 MPa m 1/2 , respectively, whereas higher values of electrical conductivity (0.81 × 10 6 −1 m −1 ), thermal conductivity (21.20 W m −1 K −1 ) and Young's modulus (365 GPa) were obtained along the a-or b-axis direction.

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Tape Casting, Pressureless Sintering, and Grain Growth in Ti₃SiC₂ Compacts

Cited by 49 publications

References 27 publications

The M+1AX phases: Materials science and thin-film processing

The M+1AX phases: Materials science and thin-film processing

Synthesis of TiB<SUB>2</SUB>-TiC-Ti<SUB>3</SUB>SiC<SUB>2</SUB> Composites by Reactive Hot Pressing of B<SUB>4</SUB>C-SiC-Ti Powder Mixtures

Physical and mechanical properties of highly textured polycrystalline Nb₄AlC₃ceramic

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Tape Casting, Pressureless Sintering, and Grain Growth in Ti3SiC2 Compacts

Cited by 49 publications

References 27 publications

The M+1AX phases: Materials science and thin-film processing

The M+1AX phases: Materials science and thin-film processing

Synthesis of TiB<SUB>2</SUB>-TiC-Ti<SUB>3</SUB>SiC<SUB>2</SUB> Composites by Reactive Hot Pressing of B<SUB>4</SUB>C-SiC-Ti Powder Mixtures

Physical and mechanical properties of highly textured polycrystalline Nb4AlC3ceramic

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Tape Casting, Pressureless Sintering, and Grain Growth in Ti₃SiC₂ Compacts

Physical and mechanical properties of highly textured polycrystalline Nb₄AlC₃ceramic