Influence of fibre content on the strength of carbon fibre reinforced HfC/SiC composites up to 2100 °C

Vinci, Angela Di; Zoli, Luca; Sciti, Diletta; Watts, Jeremy Lee; Hilmas, Greg

doi:10.1016/j.jeurceramsoc.2019.04.049

Cited by 35 publications

(17 citation statements)

References 36 publications

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“…At 2200 • C plastic deformation appeared, as a result of grain-boundary sliding. This test highlights the essential role of grain boundaries, because in HfC ceramics with smaller grain size, the decline was more considerable [14,74].…”

Section: Hafnium Carbide (Hfc) Compositesmentioning

confidence: 77%

Ceramic Composite Materials Obtained by Electron-Beam Physical Vapor Deposition Used as Thermal Barriers in the Aerospace Industry

et al. 2020

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This paper is focused on the basic properties of ceramic composite materials used as thermal barrier coatings in the aerospace industry like SiC, ZrC, ZrB 2 etc., and summarizes some principal properties for thermal barrier coatings. Although the aerospace industry is mainly based on metallic materials, a more attractive approach is represented by ceramic materials that are often more resistant to corrosion, oxidation and wear having at the same time suitable thermal properties. It is known that the space environment presents extreme conditions that challenge aerospace scientists, but simultaneously, presents opportunities to produce materials that behave almost ideally in this environment. Used even today, metal-matrix composites (MMCs) have been developed since the beginning of the space era due to their high specific stiffness and low thermal expansion coefficient. These types of composites possess properties such as high-temperature resistance and high strength, and those potential benefits led to the use of MMCs for supreme space system requirements in the late 1980s. Electron beam physical vapor deposition (EB-PVD) is the technology that helps to obtain the composite materials that ultimately have optimal properties for the space environment, and ceramics that broadly meet the requirements for the space industry can be silicon carbide that has been developed as a standard material very quickly, possessing many advantages. One of the most promising ceramics for ultrahigh temperature applications could be zirconium carbide (ZrC) because of its remarkable properties and the competence to form unwilling oxide scales at high temperatures, but at the same time it is known that no material can have all the ideal properties. Another promising material in coating for components used for ultra-high temperature applications as thermal protection systems is zirconium diboride (ZrB 2 ), due to its high melting point, high thermal conductivities, and relatively low density. Some composite ceramic materials like carbon-carbon fiber reinforced SiC, SiC-SiC, ZrC-SiC, ZrB 2 -SiC, etc., possessing low thermal conductivities have been used as thermal barrier coating (TBC) materials to increase turbine inlet temperatures since the 1960s. With increasing engine efficiency, they can reduce metal surface temperatures and prolong the lifetime of the hot sections of aero-engines and land-based turbines.

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Section: Hafnium Carbide (Hfc) Compositesmentioning

confidence: 77%

Ceramic Composite Materials Obtained by Electron-Beam Physical Vapor Deposition Used as Thermal Barriers in the Aerospace Industry

et al. 2020

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“…The result in Table 4 reveals an onset T m for each sample with no significant change with the increasing of OPMF contents. HDPE is a dominant phase in this blend and the content of OPMF was too small to influence the melting temperature of the matrix of HDPE [11,12]. continuous HDPE matrix.…”

Section: Water Absorptionmentioning

confidence: 94%

“…Blending HDPE with a cheap natural biopolymer such as mesocarp fibre is necessary method to enhance biodegradation and reduce the cost of final product. OPMF is a good choice since it is an abundant and low cost material; therefore it used in this study to reduce the production cost and enhance the biodegradation properties of HDPE film [11,12].…”

Section: Introductionmentioning

confidence: 99%

Development of bio-composite film based on high density polyethylene and oil palm mesocarp fibre

Laftah¹,

Majid

2019

SN Appl. Sci.

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The aim of this study is to develop bio-film based on high-density polyethylene (HDPE) and oil palm mesocarp fibre (OPMF). Rheological and mechanical properties of the biofilm were investigated using melt flow index and tensile test respectively. The produced films were characterized using scanning electron microscopy and differential scanning calorimetry (DSC). In addition, biodegradation and absorption properties were studied. OPMF is dried and then added to HDPE to be compounded using a twin-screw extruder. Maleic anhydride was used as compatibilizer during the melt mixing. The film samples were prepared using hot compression moulding process. Young's modulus was found to increase with addition of OPMF and vice versa for tensile strength and elongation at break of the film sample. The reason behind the reduction of tensile strength and elongation at break is the low effective cross sectional area of HDPE matrix. Melting point value was increased after the addition of OPMF into the film as shown in DSC analysis. The rising of water absorption rate of the films is greatly relative to the content of OPMF as a result of high affinity of OPMF to water.

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“…Fiber contents in continuous-fiber UHTCMCs vary from 40 to 65 vol%, with higher contents nominally increasing mechanical performance, but offer more difficulty when infiltrating with matrix material. 30,31 Carbon fibers are frequently used in UHTCMCs due to the historic use of C/C composites for aerothermal structures. They are also generally lower cost and more easily available than SiC fibers (SiC f ) and can readily be configured via winding, weaving, knitting, braiding, or wrapping over a mandrel.…”

Section: Fibersmentioning

confidence: 99%

Processing of fiber‐reinforced ultra‐high temperature ceramic composites: A review

Rueschhoff

Carney

Apostolov

et al. 2019

Int J Ceramic Engine & Sci

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Ultra-high temperature ceramics (UHTCs) have emerged as promising materials for high-temperature aerospace applications due to their high melting temperature and superior ablation performance. Even still, they have yet to reach their full potential due to the catastrophic brittle failure that typically accompanies the intrinsic low fracture toughness of ceramic materials. Therefore, the emerging field of UHTC ceramic matrix composites (UHTCMCs) offers the toughness benefits of a composite with the high temperature stability of UHTCs. Here, we outline work in the last decade on the processing of UHTCs with a reinforcing fiber phase for enhanced fracture toughness. Included are fibers of both carbon and silicon carbide composition in both continuous and chopped fiber lengths. Particular emphasis is given to emerging research from the last few years to highlight novel developments. K E Y W O R D Sceramic matrix composites, ceramic processing, ultra-high temperature ceramics How to cite this article: Rueschhoff LM, Carney CM, Apostolov ZD, Cinibulk MK. Processing of fiber-reinforced ultra-high temperature ceramic composites: A review.

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Influence of fibre content on the strength of carbon fibre reinforced HfC/SiC composites up to 2100 °C

Cited by 35 publications

References 36 publications

Ceramic Composite Materials Obtained by Electron-Beam Physical Vapor Deposition Used as Thermal Barriers in the Aerospace Industry

Ceramic Composite Materials Obtained by Electron-Beam Physical Vapor Deposition Used as Thermal Barriers in the Aerospace Industry

Development of bio-composite film based on high density polyethylene and oil palm mesocarp fibre

Processing of fiber‐reinforced ultra‐high temperature ceramic composites: A review

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