Kinetics in Advanced Processing of Solids
1
2018-2019
03015866
Materials Science and Engineering
Portuguese
Face-to-face
6.0
Elective
3rd Cycle Studies
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)
NoSyllabus
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