Kinetics in Advanced Processing of Solids

Recommended Prerequisites

Not applicable.

Teaching Methods

Not applicable.

Learning Outcomes

The main objectives of the course are:

- to achieve better understanding of specific issues of solid state kinetics, its application to relevant materials processes, and corresponding methods, with emphasis on experimental techniques;

- to identify kinetic limitations in her/his PhD (preliminary) workprogram and to propose a mini-project closely related to that workprogram;

- to select experimental techniques or other suitable methods for this mini-project;

- to establish suitable experimental conditions for the requirements of that mini-project;

- to improve skills for analysis and discussion of research results attained within that mini-project.

- to develop skills to write the corresponding research report, in the form of a scientific publication.

Work Placement(s)

No

Syllabus

Solid State kinetics:

Role of defects and diffusion on solid state reactions

Thermodynamic constrains;

Size effects;

Solid state kinetics: isokinetic models for constant and variable T; reactions close to equilibrium.

Kinetics of processing:

Powder processing: high T and low T (mechanosynthesis, hydrothermal synthesis, etc.)

Sintering mechanisms and less common sintering methods

Phase transformations and glass crystallization

Frozen-in conditions under controlled thermochemical cycles

Thick and thin film processing

Degradation vs processing: interaction with gases, reactions in multilayer or composite systems, degradation by fast changes

Methods:

Thermoanalytical real time methods

Dilatometry, DTA, DSC, TG

Less common methods based on property changes (electrical, mechanical, electrochemical,…)

Post-morten analyses

Macroscospic changes (weight, volume)

Microscopy and stereology

XRD

Spectroscopies (IR, Mossbauer)

Assessment Methods

Assessment continuous
Assessment continuous: 100.0%

Bibliography

H. Schmalzried: Chemical Kinetics of Solids, VCH, 1995

J.S.Armijo, “The kinetics and mechanism of solid state spinel formation-A review and critique”, Oxid. Met., 1 (1969) 171-198)

J.O.Eckert et al., Kinetics and mechanisms of hydrothermal synthesis, J. Amer. Ceram. Soc., 79 (1996) 2929

S.Mrowec, Z.Grzesik, Oxidation of nickel and transport properties of nickel oxide, J.Phys.Chem.Sol., 65 (2004) 1651-7).

F.J.Gotor et al.,“Kinetic analysis of solid state reactions: …”, J.Phys. Chem.,A, 104 (2000) 10777

X.H. Wang, P.L. Chen, I.W. Chen, Two-Step Sintering of Ceramics with Constant Grain-Size, I. Y2O3, J. Amer. Ceram. Soc., 89 (2006) 431

G.B.Andreozzi et al., Kinetics of cation ordering in synthetic MgAl2O4 spinel, Amer. Miner., 87 (2002) 838-44

Z.He et al, “Densification and grain growth during early-stage sintering of Ce(0.9)Gd(0.1)O(1.95-delta) in a reducing atmosphere”, Ata Materialia, 58 (2010) 3860

J.F.Monteiro et al., Journal of Solid State Chemistry 185 (2012) 143–149