2020 Physical Chemistry for High Temperature Processes -Oxidation of Metals-

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Academic unit or major
Graduate major in Energy Science and Engineering
Instructor(s)
Ueda Mitsutoshi  Susa Masahiro  Kobayashi Yoshinao  Kawamura Kenichi  Hayashi Miyuki 
Course component(s)
Lecture
Mode of instruction
ZOOM
Day/Period(Room No.)
Fri5-6(Zoom)  
Group
-
Course number
ENR.J404
Credits
1
Academic year
2020
Offered quarter
3Q
Syllabus updated
2020/9/29
Lecture notes updated
-
Language used
English
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Course description and aims

In this course, students learn the basic thermodynamics and kinetics for understanding of oxidation of metals at high temperature. In the part of basic thermodynamics, students acquire the method of constructing the Ellingham diagram and estimate the chemical stability of metals and oxides by the diagram. In the part of kinetics, students learn the mechanism of scale formation and Wagner’s theory for parabolic scale growth.
This course provides students with basics of thermodynamics and kinetics for high temperature oxidation of metals. By attending this course, students can understand the degradation mechanism of metals at high temperature and will be able to estimate degradation behavior from given materials and environments. Instructors hope that students improve understanding of degradation of metals in the industrial high temperature processes.

Student learning outcomes

By the end of this course, students will be able to:
1) Explain about oxidation of metals at high temperature and its industrial importance.
2) Construct Ellingham diagram and evaluate the chemical stability of metals and oxides by the diagram.
3) Explain the mechanism of scale formation and estimate parabolic rate constant of scale formation by Wagner’s theory.
4) Estimate degradation behavior of metals at high temperature from given materials and environments.

Keywords

Metals, High Temperature Oxidation, Ellingham diagram, Mechanism of Scale growth, Parabolic rate law, Wagner's theory

Competencies that will be developed

Specialist skills Intercultural skills Communication skills Critical thinking skills Practical and/or problem-solving skills

Class flow

Each class consists of lecture and exercise.

Course schedule/Required learning

  Course schedule Required learning
Class 1 Introduction to high temperature oxidation of metals
Class 2 Ellingham diagram (Part 1) Construct Ellingham diagram and estimate the stability of metals and oxides by the diagram
Class 3 Ellingham diagram (Part 2) Construct Ellingham diagram considering activity and estimate the stability of alloys and oxides by the diagram
Class 4 Scale growth and its mechanism Understand the mechanism and rate determining step of scale growth
Class 5 Parabolic scale growth and Wagner's theory (Part 1) Understand Wagner's theory, defect structure and diffusion in oxides
Class 6 Parabolic scale growth and Wagner's theory (Part 2) Understand Wagner's theory, defect structure and diffusion in oxides
Class 7 Analytical methods for evaluating high temperature oxidation of metals Understand analytical methods for evaluating oxide scales

Out-of-Class Study Time (Preparation and Review)

To enhance effective learning, students are encouraged to spend approximately 100 minutes preparing for class and another 100 minutes reviewing class content afterwards (including assignments) for each class.
They should do so by referring to textbooks and other course material.

Textbook(s)

None specified.

Reference books, course materials, etc.

Slides and handout in each class.

Assessment criteria and methods

Students' knowledge of Ellingam diagram, mechanism of scale growth, Wagner's theory, analytical methods for evaluating oxide scale and their ability to apply them to problems will be assessed by final report.

Related courses

  • ENR.J402 : Physical Chemistry for High Temperature Processes -Thermodynamics-
  • ENR.J403 : Physical Chemistry for High Temperature Processes -Smelting and Refining Processes-
  • MAT.M404 : Transport Phenomena at HighTemperature
  • MAT.M403 : Environmental Degradation of Materials

Prerequisites (i.e., required knowledge, skills, courses, etc.)

Students must have successfully completed 'Themodynamics of Materials' (MAT.A203.R) or have equivalent knowledge.

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