### Abstract

Incorporation of ceramic particles into liquid metals is the first necessary step of melt processing of Metal Matrix Composites (MMCs). Literature review of existing equations/models is given, and contradictions in the literature are discussed. Detailed thermodynamic analysis shows, that the equilibrium depth of immersion (x) of the spherical particle into the melt can be expressed as: x_{equilibrium} = R(1 + cosΘ)) = RW_{a}/σ_{lv} where R is the radius of the particle, Θ and W_{a} are the equilibrium contact angle and adhesion energy between the melt and the particle, σ_{lv} is the surface tension of the melt. The following conclusions have been drawn from the above equation: i. Any particle with 0°2) such requirement can be met only, if some chemical interaction appears between the particle and the melt. The effect of gravity is also considered. It has been shown that gravity has any significant effect on incorporation of big particles only, with radius of at least 100 micrometer. Generally for particles used in MMCs gravity has a negligible effect, and conclusions given above remain valid.

Original language | English |
---|---|

Pages (from-to) | 459-466 |

Number of pages | 8 |

Journal | Materials Science Forum |

Volume | 215-216 |

Publication status | Published - 1996 |

### Fingerprint

### Keywords

- Ceramic Particles
- Incorporation
- Liquid Metals
- Metal Matrix Composites
- Wetting

### ASJC Scopus subject areas

- Materials Science(all)

### Cite this

**Interfacial phenomena during melt processing of ceramic particle-reinforced metal matrix composites part I. Introduction (incorporation) of solid particles into melts.** / Kaptay, G.

Research output: Contribution to journal › Article

}

TY - JOUR

T1 - Interfacial phenomena during melt processing of ceramic particle-reinforced metal matrix composites part I. Introduction (incorporation) of solid particles into melts

AU - Kaptay, G.

PY - 1996

Y1 - 1996

N2 - Incorporation of ceramic particles into liquid metals is the first necessary step of melt processing of Metal Matrix Composites (MMCs). Literature review of existing equations/models is given, and contradictions in the literature are discussed. Detailed thermodynamic analysis shows, that the equilibrium depth of immersion (x) of the spherical particle into the melt can be expressed as: xequilibrium = R(1 + cosΘ)) = RWa/σlv where R is the radius of the particle, Θ and Wa are the equilibrium contact angle and adhesion energy between the melt and the particle, σlv is the surface tension of the melt. The following conclusions have been drawn from the above equation: i. Any particle with 0°2) such requirement can be met only, if some chemical interaction appears between the particle and the melt. The effect of gravity is also considered. It has been shown that gravity has any significant effect on incorporation of big particles only, with radius of at least 100 micrometer. Generally for particles used in MMCs gravity has a negligible effect, and conclusions given above remain valid.

AB - Incorporation of ceramic particles into liquid metals is the first necessary step of melt processing of Metal Matrix Composites (MMCs). Literature review of existing equations/models is given, and contradictions in the literature are discussed. Detailed thermodynamic analysis shows, that the equilibrium depth of immersion (x) of the spherical particle into the melt can be expressed as: xequilibrium = R(1 + cosΘ)) = RWa/σlv where R is the radius of the particle, Θ and Wa are the equilibrium contact angle and adhesion energy between the melt and the particle, σlv is the surface tension of the melt. The following conclusions have been drawn from the above equation: i. Any particle with 0°2) such requirement can be met only, if some chemical interaction appears between the particle and the melt. The effect of gravity is also considered. It has been shown that gravity has any significant effect on incorporation of big particles only, with radius of at least 100 micrometer. Generally for particles used in MMCs gravity has a negligible effect, and conclusions given above remain valid.

KW - Ceramic Particles

KW - Incorporation

KW - Liquid Metals

KW - Metal Matrix Composites

KW - Wetting

UR - http://www.scopus.com/inward/record.url?scp=0029747088&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0029747088&partnerID=8YFLogxK

M3 - Article

VL - 215-216

SP - 459

EP - 466

JO - Materials Science Forum

JF - Materials Science Forum

SN - 0255-5476

ER -