Subject Group of Materials Science and Engineering
3609
Physico-chemical Properties of High Temperature Materials
Winter
Description and rationale: The development of alloys is usually aimed at improving oxidation resistance, as well
as improving mechanical properties. In this course, to acquire basic knowledge of thermodynamics and kinetics in
the reactions of metals and alloys with gaseous environments at high temperatures is aimed. In particular,
oxidation mechanism of metals and alloys is discussed on the basis of fundamental parameters of oxides such as
point defect structures and transport properties of oxide scales. The final goal of this course is to acquire basic skills
which can be utilized to analyze oxidation mechanism of metals and alloys and design new oxidation-resistant
materials.
Keywords: High Temperature Materials, Point Defect in Oxide, Transport Property of Oxide, Oxidation Mechanism
Pre-requisite: basic thermodynamics
Expected students: master and doctoral
Instructor: Prof. Kazuya KUROKAWA (kurokawa@eng.hokudai.ac.jp)
Course Outline:
1. Outline of High Temperature Materials
1-1. Mechanical and physical properties
1-2. Chemical properties
1-3. Recent and future high temperature materials
2. Reaction Path
2-1. Metal-oxygen phase diagrams
2-2. Reaction path in oxidation
3. Defect Structures of Oxides
3-1. Point defects in oxides
3-2. Negative and positive semiconductors
3-3. Formation of point defects
3-4. Oxide doping
4. Transport mechanism in Oxide Scales
4-1. Diffusion of cations and anions in oxide scales
4-2. Marker measurement
5. Oxidation of Metals and Alloys
5-1. Basic thermodynamics
5-2. Oxidation kinetics
5-3. Wagner theory of oxidation
5-4. Actual oxidation process
6. Recent Topics
Reading of papers dealing with recent topics on high temperature materials
Grading:
evaluation based on the results of reports and final examination is done.
Textbooks and references:
3/2007
handouts are provided at each lecture.