Surfaces and Interfaces
Code
7494
Academic unit
Faculdade de Ciências e Tecnologia
Department
Departamento de Ciências dos Materiais
Credits
6.0
Teacher in charge
Isabel Maria Mercês Ferreira, João Pedro Botelho Veiga
Weekly hours
5
Total hours
84
Teaching language
Português
Objectives
Provide to students specific knowledge related to the issue of surfaces and interfaces in materials.
Prerequisites
Although this discipline do not have mandatory precedence, it is recommended that students have done propedeutics disciplines of physics, mathematics and chemistry
Subject matter
Surfaces and interfaces. Classification of interfaces and interfacial tension or surface tension. Capillarity; Contact liquid / solid. Wettability. Contact angle, gas-solid adsorption. BET equation. Specific area of solids; roughness. Solid-solid friction. Wear; solid surfaces. Coordination and atomic energy surface. Effect of orientation on the structure and energy. Anisotropy of surface tension. Faceting. Thermodynamics of interfaces. Gibbs-Duhem equation. Gibbs equation. Concentration of excess. Adsorption positive and negative. Effect on surface tension. Surfactants. Segregation.
Bibliography
Interfaces in Materials, Howe, James, John Wiley & Sons, 1997
Physical Chemistry of Surfaces, Adamson, Arthur, John Wiley & Sons, 1990
Physical Chemistry, Atkins, P.W., (6th Edition), Oxford, 1998
Teaching method
The lectures involve exposing the material through powerpoint, practical lessons solving problem alternate with labs.
Evaluation method
The evaluation is done through two tests for exemption from final exam with the following three conditions:
1) Final note resulting from the arithmetic mean of the marks obtained in two tests and notes of the reports of practical work.
2) Minimum grade in any of the tests: 6.0 values.
3) Average minimum exemption from final exam: 9.5