Directed Metal Oxidation

Jayaram, Vikram; Brandon, David

doi:10.1002/9783527618217.ch10

Cited by 2 publications

(1 citation statement)

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“…Several reaction‐based processes have been developed that combine the synthesis of the desired phase or phases with shaping of the ceramic or composite (Table I). These techniques include reaction bonding, 6–8 directed metal oxidation, 9–13 displacive compensation of porosity, 14–16 alumina–aluminide alloys, 17–19 co‐continuous ceramic composites, 20–22 and reactive metal penetration 23–27 . Among the advantages of these techniques are low‐temperature processing, increased control over microstructure development and properties, and the use of cheaper, more abundant precursors 1 .…”

Section: Introductionmentioning

confidence: 99%

Reactive Processing in Ceramic‐Based Systems

Fahrenholtz

2006

Int J Applied Ceramic Tech

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Reactive hot pressing is discussed as a processing method to form ceramic‐based materials. Fundamental aspects of thermodynamics such as favorable Gibbs'‐free energy changes, phase equilibria, and adiabatic temperature are presented as criteria for determining whether the desired reactions can be used to form dense materials. Two case studies are presented as examples to describe control of microstructure and properties. The fabrication of Al2O3–Nb and ZrB2 are discussed with respect to the three thermodynamic criteria as well as the microstructure and properties of the materials that are produced.

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Section: Introductionmentioning

confidence: 99%

Reactive Processing in Ceramic‐Based Systems

Fahrenholtz

2006

Int J Applied Ceramic Tech

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Reaction-Induced Processing of AI₂O₃-Based Interpenetrating Phase Composites

Roy¹

2003

Transactions of the Indian Ceramic Society

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Interpenetrating network (lPN) composites containing Al 2 0 3 and AI phases constitute a novel class of materials that exhibit connectivity of both the phases in all directions and as a result, possess interesting properties which can be designed to suit specific applications. Reaction-induced methods of fabrication of such materials are considered economical and provide opportunity for optimizing phase contents. Four different methods of synthesizing Al 2 0:fAI-IPNs using exothermic reactions are reviewed. The important aspects of thermodynamics of exothermic systems, wetting phenomenon in solid-liquid contacts and control of porosity in solid-gas reaction are discussed. Some data on properties are collected from available literature and on the basis of these values, a few applications are indicated.

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Directed Metal Oxidation

Cited by 2 publications

References 89 publications

Reactive Processing in Ceramic‐Based Systems

Reactive Processing in Ceramic‐Based Systems

Reaction-Induced Processing of AI₂O₃-Based Interpenetrating Phase Composites

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Directed Metal Oxidation

Cited by 2 publications

References 89 publications

Reactive Processing in Ceramic‐Based Systems

Reactive Processing in Ceramic‐Based Systems

Reaction-Induced Processing of AI2O3-Based Interpenetrating Phase Composites

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Reaction-Induced Processing of AI₂O₃-Based Interpenetrating Phase Composites