Microstructure of alumina-matrix composites reinforced with nanometric titanium and titanium carbide dispersions

Refugio-García, Elizabeth; Hernández-Silva, D.; Térres‐Rojas, Eduardo; Rodríguez-García, José; Rocha–Rangel, Enrique

doi:10.1590/s1516-14392012005000110

Cited by 11 publications

(5 citation statements)

References 6 publications

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“…The common manufacturing processes include pressing and sintering. B 4 C reinforced CMCs are very capable ceramic composites due to their attractive properties which include high strength and hardness, low density, neutron absorption capability, and acceptable chemical stability, making it capable to ionize radiation [5]. They can be typically used in high-temperature structural applications.…”

Section: Alumina Matrix Oxide Cmcsmentioning

confidence: 99%

Oxide Ceramic Matrix Composite Materials for Aero-Engine Applications: A Literature Review

Karadimas¹,

Salonitis²,

Georgarakis³

2021

Advances in Transdisciplinary Engineering

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The development of aircraft gas turbine engines has extensively been required for the development of advanced materials. This complex development process is however justified by the system-level benefits in terms of reduced weight, higher temperature capability, and/or reduced cooling, each of which increases efficiency. This is where high-temperature ceramics have made considerable progress and ceramic matrix composites (CMCs) are in the foreground. CMCs are classified into non-oxide and oxide-based ones. Both families have material types that have a high potential for use in high-temperature propulsion applications. Typical oxide-based ones are based on an oxide fiber and oxide matrix (Ox-Ox). Some of the most common oxide subcategories, are alumina, beryllia, ceria, and zirconia ceramics. Such matrix composites are used for example in combustion liners of gas turbine engines and exhaust nozzles. However, until now a thorough study on the available oxide-based CMCs for such applications has not been presented. This paper focus on assessing a literature survey of the available oxide ceramic matrix composite materials in terms of mechanical and thermal properties.

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Section: Alumina Matrix Oxide Cmcsmentioning

confidence: 99%

Oxide Ceramic Matrix Composite Materials for Aero-Engine Applications: A Literature Review

Karadimas¹,

Salonitis²,

Georgarakis³

2021

Advances in Transdisciplinary Engineering

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“…Prielipp et al [16] synthesized alumina-based composites reinforced with aluminum metal particles, indicating a crack toughness of 10.5 MPa•m -0.5 with 35 % of aluminum. Recently, alumina-based composites reinforced with titanium particles have been developed under different conditions, reporting favorable densification results, micro-hardness, and fracture toughness [17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Effect of Titanium Particles on the Microstructure and Mechanical Properties of Alumina Matrix Composites

Rodríguez-García¹

2021

Ceramics - Silikaty

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In this study, Al 2 O 3 -based composites strengthened with Ti were manufactured. High-energy milling was used to mix and grind the raw materials (450 rpm during 40 min). These powders were compacted (300 MPa) into cylindrical samples and sintered at 1500 °C for 2 h. Scanning electron microscopy observations show dense, fine and homogeneous microstructures, with a uniform distribution of metal particles throughout the ceramic matrix. A significant effect on the composite micro-hardness can be observed (as the titanium percentage is increased, micro-hardness is also increased). In other words, composites have a significant surface hardness, which diminishes towards the center of the piece. This attribute is highly useful for solid elements exposed to extreme strain and shearing conditions since hardness allows withstanding wear, corrosion, and friction, but the soft center allows withstanding vertical loads in the piece cross section. The fracture toughness, estimated by the indentation fracture method, showed that the manufactured composites here present higher values up to 100 % than the control sample's average (0.0 % Ti). Hence, it can be inferred that titanium particles in a ceramic matrix can disperse the energy of cracks spreading.

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“…Using sintering methods, researchers proved that the in-situ synthesis of TiC creates composites with high density, exhibiting enhanced toughness in comparison with Al 2 O 3 oxide ceramics [57]. Further investigations have been conducted on the manufacturability of such CMCs, focusing on mechanical milling, cementation process, and pressure-less sintering, but the results varied without having a consistently successful outcome [58].…”

mentioning

confidence: 99%

Ceramic Matrix Composites for Aero Engine Applications—A Review

Karadimas

Salonitis

2023

Applied Sciences

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Ceramic matrix materials have attracted great attention from researchers and industry due to their material properties. When used in engineering systems, and especially in aero-engine applications, they can result in reduced weight, higher temperature capability, and/or reduced cooling needs, each of which increases efficiency. This is where high-temperature ceramics have made considerable progress, and ceramic matrix composites (CMCs) are in the foreground. CMCs are classified into non-oxide and oxide-based ones. Both families have material types that have a high potential for use in high-temperature propulsion applications. The oxide materials discussed will focus on alumina and aluminosilicate/mullite base material families, whereas for non-oxides, carbon, silicon carbide, titanium carbide, and tungsten carbide CMC material families will be discussed and analyzed. Typical oxide-based ones are composed of an oxide fiber and oxide matrix (Ox-Ox). Some of the most common oxide subcategories are alumina, beryllia, ceria, and zirconia ceramics. On the other hand, the largest number of non-oxides are technical ceramics that are classified as inorganic, non-metallic materials. The most well-known non-oxide subcategories are carbides, borides, nitrides, and silicides. These matrix composites are used, for example, in combustion liners of gas turbine engines and exhaust nozzles. Until now, a thorough study on the available oxide and non-oxide-based CMCs for such applications has not been presented. This paper will focus on assessing a literature survey of the available oxide and non-oxide ceramic matrix composite materials in terms of mechanical and thermal properties, as well as the classification and fabrication methods of those CMCs. The available manufacturing and fabrication processes are reviewed and compared. Finally, the paper presents a research and development roadmap for increasing the maturity of these materials allowing for the wider adoption of aero-engine applications.

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Microstructure of alumina-matrix composites reinforced with nanometric titanium and titanium carbide dispersions

Cited by 11 publications

References 6 publications

Oxide Ceramic Matrix Composite Materials for Aero-Engine Applications: A Literature Review

Oxide Ceramic Matrix Composite Materials for Aero-Engine Applications: A Literature Review

Effect of Titanium Particles on the Microstructure and Mechanical Properties of Alumina Matrix Composites

Ceramic Matrix Composites for Aero Engine Applications—A Review

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