Properties of Continuous Fibre Reinforced Al- and Mg-Matrix Composites Produced by Gas Pressure Infiltration

Degischer, H. P.; Schulz, P. A.; Lacom, W.

doi:10.4028/www.scientific.net/kem.127-131.99

Cited by 19 publications

(7 citation statements)

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“…Further, the efficiency of the fibre was quantified by the proportion of the the linear fibre [1]. The measured structural feature was: fibre volume fraction, not infiltrated cross section, number of neighbour fibres, mean distance to next fibres.…”

Section: E Influence Of Parameters To the Composites Propertiesmentioning

confidence: 99%

“…The properties of MMCs under high temperature, conductibility of electricity and heat, etc excel that of polymer matrix composites (PMCs). But except very a few MMCs has been using successfully, for example B/Al composites, when the continuous carbon fibre, which is wide used as the reinforcement parts in PMCs, reinforced metal matrix, the properties of the composites were usually lower [1]. The costs of MMCs are the main obstacle to market preparation, which is delt with directly by focusing on relatively economic fibres and processing techniques with high chance for economic industrialization.…”

Section: Introductionmentioning

confidence: 97%

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Notice of Retraction Shaping of continuous carbon fibre reinforced 5A06 composites by vacuum anti-pressure infiltration technology

Wang

Chen

2013

2013 International Conference on Quality, Reliability, Risk, Maintenance, and Safety Engineering (QR2MSE)

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This paper studies key parameters of continuous carbon fibre reinforced 5A06 composites technique by the vacuum anti-pressure infiltration. Production steps of composites are generally described as follows: preform manufacturing, liquid metal infiltration by gas pressure and finishing. Results illustrate that besides the remained ratio of fibre tensile strength, the compression strength of fiber preform is remarkably influenced by temperature and mechanical properties of composites. When preform temperature decreased from 680°C to 620°C and the fibres are coated C-Al 2 O 3 layer, the tensile strength of the composites increased from 69MPa to 651MPa.

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Section: E Influence Of Parameters To the Composites Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

Notice of Retraction Shaping of continuous carbon fibre reinforced 5A06 composites by vacuum anti-pressure infiltration technology

Wang

Chen

2013

2013 International Conference on Quality, Reliability, Risk, Maintenance, and Safety Engineering (QR2MSE)

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“…Los recubrimientos cerámicos y vítreos muestran las mayores posibilidades de éxito, pero las diferencias entre los coeficientes de dilatación térmica de estos materiales y la fibra de carbono, y la reactividad entre ésta y diferentes compuestos ha impedido hasta el momento alcanzar resultados totalmente satisfactorios. El desarrollo de un sistema antioxidante eficaz tendría importantes beneficios económicos, industriales, sociales y medioambientales en la aplicación de estos materiales (10,(28)(29)(30)(31)(32)(33)(34)(35).…”

Section: -Los Materiales Compuestos Reforzados Con Fibra De Carbonounclassified

Materiales compuestos C/SiC para aplicaciones estructurales de alta temperatura. Parte I: estabilidad termodinámica y química

Aparicio¹,

Durán²

2000

Bol. Soc. Esp. Ceram. Vidr.

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El desarrollo de la industria aeroespacial se orienta actualmente hacia la tecnología hipersónica, el incremento en el rendimiento de las reacciones de combustión y la reducción de la emisión de contaminantes. Estos objetivos sólo pueden alcanzarse aumentando la temperatura de combustión, para lo cual es necesario desarrollar nuevos materiales que conserven sus propiedades mecánicas hasta temperaturas muy elevadas. Entre ellos se encuentran los materiales compuestos de matriz de SiC reforzada con fibra continua de carbono (C/SiC), cuyas propiedades más importantes son una elevada resistencia a flexión y al choque térmico desde temperatura ambiente hasta 1600ºCy su reducido peso específico. Sin embargo, el principal problema que acompaña a los materiales compuestos C/SiC es la elevada velocidad de oxidación de la fibra de carbono a partir de 450ºC. En la primera parte del trabajo se realiza una revisión de las características más relevantes del carbono y SiC, y de su comportamiento frente a la oxidación, tanto por separado como formando parte de materiales compuestos de matriz de SiC y fibra de C. Palabras clave: C/SiC, materiales compuestos, estabilidad termodinámica, oxidación. C/SiC composites for high temperature structural applications. Part I: thermodynamical and chemical stabilityThe development of aero-engine and aircraft industry is aimed to hypersonic technology, efficiency enhancements and pollutant emission reductions. This objective can only be reached by increasing the operating temperatures, utilising new materials which mechanical properties are retained up to high temperatures. SiC matrix composites reinforced with carbon fibres (C/SiC) are good examples with very good bending and thermal shock resistance at temperatures up to 1600ºC as well as low density. However, the fact which currently inhibits the application of these materials is the high oxidation rate of carbon fibres at temperatures above 450ºC. In the first part of the paper, a review of the most important properties and oxidation mechanisms of C and SiC has been carried out. The influence of each material disposition, individually and as composite, has been analysed.Keywords: C/SiC, composites, thermodynamical stability, oxidation. 1.-INTRODUCCIÓNLa necesidad de nuevos materiales estructurales capaces de trabajar a temperaturas cada vez mayores ha originado un desarrollo tecnológico intenso y sostenido en numerosos campos de la industria. Desde este punto de vista, sólo los materiales cerámicos avanzados ofrecen suficientes garantías, ya que su límite de aplicabilidad (fundamentalmente por el mantenimiento de sus propiedades mecánicas a alta temperatura) excede en muchos casos los 2000ºC. No es exagerado decir que industrias como la aeronáutica, y en general muchas industrias relacionadas con el espacio, dependen en gran medida del avance científico y tecnológico dentro del campo de los materiales cerámicos. La variedad de materiales cerá-micos avanzados es amplia, y abarca desde óxidos (Al 2 O 3 , TiO 2 , ZrO 2 , 3Al 2 O 3 ·2SiO 2 , ...

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“…Established manufacturing processes which are based on the melt infiltration of long fiber preforms are the gas pressure infiltration technique [1][2][3] and the squeeze casting process. [4,5] The gas pressure infiltration process allows the manufacture of highly complex components, but in economical aspects this process is not suitable for serial production because of the complex procedure and the extensive process cycle times.…”

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confidence: 99%

Carbon Long Fiber Reinforced Aluminum Matrix Composites – Parameter Studies and Numerical Simulations of the Infiltration Process

et al. 2010

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Carbon long fiber reinforced aluminum matrix composites are promising materials for applications in highly stressed lightweight structures. The use of continuous fibers as reinforcement structure offers the potential to increase the mechanical properties tremendously compared to the pure light metal alloy. The main problem for a more widespread utilization of metal matrix composites is that established manufacturing processes like gas pressure infiltration or squeeze casting are economically not attractive and cannot be upscaled for serial production. This paper shows the development of a production technique for the infiltration of carbon fiber yarns with aluminum using a conventional cold chamber die casting machine. Thereby the influence of the process parameters on the infiltration behavior is investigated. Of high importance are the plunger velocity and the temperature of the die, the melt, and the carbon fiber preform. Additionally, results of numerical simulations are presented and compared to the experimental findings.The demand for high-performance lightweight structures in transportation, machine building, and plant engineering is rising. Compared to conventional monolithic materials like polymers or light metals, continuous fiber reinforced composites can tolerate much higher loads and offer higher potential to improve mechanical properties than other reinforcements like discontinuous fibers or particles. The advantages of employing a metal matrix rather than the usual polymer one consist in higher stiffness and compressive strength as well as better elevated temperature capabilities. Therefore, continuous fiber reinforced metal matrix composites are ideally suited for applications in highly stressed lightweight structures, especially under additional thermal loads.The main problem hampering a more widespread utilization of metal matrix composites is the limited ability to produce such structures. Established manufacturing processes which are based on the melt infiltration of long fiber preforms are the gas pressure infiltration technique [1][2][3] and the squeeze casting process. [4,5] The gas pressure infiltration process allows the manufacture of highly complex components, but in economical aspects this process is not suitable for serial production because of the complex procedure and the extensive process cycle times. In contrast, squeeze casting is characterized by short cycle times, but the complexity of the preform and the part geometry is limited. In summary, these manufacturing processes are economically not attractive and cannot be upscaled for serial production.A good alternative for the fabrication process would be the high pressure die casting technology. It is characterized by short cycle times, high production rates, high level of automation, and the possibility to obtain thin-walled and complex part geometries because of the high melt velocity. However, previous studies for the manufacture of metal matrix composites by high pressure die casting are almost solely limited to the infiltrat...

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Properties of Continuous Fibre Reinforced Al- and Mg-Matrix Composites Produced by Gas Pressure Infiltration

Cited by 19 publications

References 0 publications

Notice of Retraction Shaping of continuous carbon fibre reinforced 5A06 composites by vacuum anti-pressure infiltration technology

Notice of Retraction Shaping of continuous carbon fibre reinforced 5A06 composites by vacuum anti-pressure infiltration technology

Materiales compuestos C/SiC para aplicaciones estructurales de alta temperatura. Parte I: estabilidad termodinámica y química

Carbon Long Fiber Reinforced Aluminum Matrix Composites – Parameter Studies and Numerical Simulations of the Infiltration Process

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