On the infiltration of metal matrix composites

Mortensen, Alicja; Cornie, J. A.

doi:10.1007/bf02668570

Cited by 148 publications

(28 citation statements)

References 4 publications

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“…Estimations of the size of these rings is relatively straightforward and agrees overall with data from experiments using spherical space holders. [12,[65][66][67] If, on the other hand, the infiltrant wets the preform, the same is observed, but in reverse: the fraction infiltrant in the preform depends on the pressure differential between the infiltrant and the other fluid in the preform (generally the surrounding atmosphere). The main difference is that infiltrant pressures are now negative (i.e., below the surrounding atmospheric pressure).…”

Section: Infiltrationmentioning

confidence: 99%

Replication Processing of Highly Porous Materials

et al. 2006

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There exist several methods for the production of highly porous materials; among these, replication processing is well‐adapted for open‐pore microcellular structures. The process begins by making a porous preform, open pores of which are filled with the foam material. Thereafter the preform is removed, generally by shaking or by dissolution, leaving an interconnected porous network within the foam material. We give here a general description of the process and its variants. We then give a brief overview of its fundamentals, placing particular focus on pathways it offers for microstructural tailoring and control.

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Section: Infiltrationmentioning

confidence: 99%

Replication Processing of Highly Porous Materials

et al. 2006

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“…[5] by the ratio of the wetted surface of the pores to the volume of the liquid in the pores. [35,36] Although this generalized equation turned out to be very useful in explaining experimental results of bulk penetration, [4] it is unable to describe pre-penetration, and therefore will not be considered by us in detail.…”

Section: A a Short Summary Of The Classical Capillary Theory Of Penementioning

confidence: 99%

On different modifications of the capillary model of penetration of inert liquid metals into porous refractories and their connection to the pore size distribution of the refractories

Kaptay

Matsushita

Mukai

et al. 2004

Metall Mater Trans B

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Different modifications to the classical capillary model of penetration of liquid metals into porous refractories are presented; (1) with capillaries having different radii, (2) with zigzag capillaries, and (3) with capillaries, having periodically changing capillary radius along the path of penetration. All the modified capillary models were checked against our experimental results of measuring the penetration of liquid mercury into three types of alumina refractories, having different microstructure and pore size distribution. The maximum penetration height was measured by X-ray radiography, as a function of applied outside pressure. The model with periodically changing capillary has been found to describe the experimental data satisfactorily. This model divides the process of penetration into two stages. During the first period of "pre-penetration," the maximum penetration height changes very slowly (but not linearly) as the outside pressure is increased in the interval between the "minimum threshold pressure" and the "maximum threshold pressure." In the second, "bulk penetration" period, appearing above the maximum threshold pressure, the maximum height of penetration increases rapidly with outside pressure, according to the classical capillary model of penetration. The three structural model parameters of the model (minimum pore radius, maximum pore radius, and period of pore structure) were connected with the measured pore size distribution curves of the refractories through semiempirical equations. As a result, our complex semiempirical model is able to predict penetration diagrams for any inert liquid metal into any refractory of a similar type.

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“…15) In this work, metal particles as infiltration promoter are dissolved by a heat from an alloy melt and act as a void in the infiltration process, which results in a reduction of infiltration pressure. On the basis of the calculation of critical infiltration pressure where the replacement fraction of voids with aluminum particles 5,16) is taken into consideration, the infiltration pressure of 0.3 MPa (the pressure is different from the ambient pressure; 0.2 MPa) was used in this work.…”

Section: +1mentioning

confidence: 99%

Influence of Interfacial Reaction on Wear Resistance of Aluminum Alloy/SiC Composites Fabricated by Low Pressure Infiltration Process

2015

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Hybrid-MMCs have been fabricated by a low pressure infiltration method, using aluminum alloy as matrix, SiC fiber and SiC particle as reinforcements. Influences of orientation of fibers, interfacial reaction and matrix property on the wear resistance of Hybrid-MMCs have been investigated. The 3D-distribution of SiC fibers in the Hybrid-MMC are effective to prevent SiC particles from dropping out during the wear test. Thin reaction products at the interface between matrix and SiC fiber or SiC particle strengthen the interface bond, which results in an increase in the wear resistance of the Hybrid-MMC. The wear resistance can be improved by the formation of interfacial reaction layer and an age-hardening of the matrix. Volume expansion of the matrix accompanied by the age-hardening of the matrix increases the interface bond strength. The strengthened interface bond protects the reinforcements from dropping out and results in a superior wear resistance of the MMC.

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On the infiltration of metal matrix composites

Cited by 148 publications

References 4 publications

Replication Processing of Highly Porous Materials

Replication Processing of Highly Porous Materials

On different modifications of the capillary model of penetration of inert liquid metals into porous refractories and their connection to the pore size distribution of the refractories

Influence of Interfacial Reaction on Wear Resistance of Aluminum Alloy/SiC Composites Fabricated by Low Pressure Infiltration Process

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