636-0415/01 – Surface Properties and Treatment (VaÚP)
Gurantor department | Department of Material Engineering | Credits | 5 |
Subject guarantor | prof. Ing. Vlastimil Vodárek, CSc. | Subject version guarantor | doc. Ing. Jaroslav Bystrianský, CSc. |
Study level | undergraduate or graduate | Requirement | Choice-compulsory |
Year | 3 | Semester | winter |
| | Study language | Czech |
Year of introduction | 2004/2005 | Year of cancellation | 2019/2020 |
Intended for the faculties | FMT | Intended for study types | Bachelor |
Subject aims expressed by acquired skills and competences
- Define the importance and the classification of heat treatments of metallic materials;
- Outline the principal equilibrium heat treatments of steels – annealing;
- Clarify the principal non-equilibrium heat treatments of steels – quenching and tempering;
- Describe processes of oxidation and decarburization during heat treatment of steels;
- Differentiate and define the principal procedures of thermo chemical treatment of steels;
- Outline the essential heat treatments of cast irons and non-ferrous metals;
- Compare the internal structure and properties of metallic materials after heat treatments;
- Propose the appropriate heat treatment for the selected kind of material.
Teaching methods
Lectures
Tutorials
Experimental work in labs
Summary
The surfaces and interfaces are important in determining many properties of
condensed maters and processes on them. It is desirable to understand the
structure, composition for they have a strong influence on many mechanical
properties, chemical phenomena, electrical properties etc. and in many
situation they have also influence on degradation of solids, namely metals.
The degradation processes created as a result of stressors activity on solid
surface can lead to wastage of material. The subject will deal with
interdisciplinary basic information about surfaces, their properties physical
as well as chemical, mechanisms of their deterioration, main techniques of
surface modification, testing of surfaces and modified surfaces.
Compulsory literature:
[1] Burakowski T., Wierzchoň T., Surface engineering of metals: principles, equipment, technologies. CRC Press, 1999, 592 p.
Recommended literature:
[1] Luth H., Surfaces and interfaces of solid materials. Springer, Berlin 2001, 559 p.
Way of continuous check of knowledge in the course of semester
E-learning
Other requirements
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Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
Lectures:
· Surfaces and interfaces of condensed matter. Utility properties of solids
dependent on the surface. Professional discipline dealing with the study, assessment
and surface treatment. Damage to solids / metals processes induced
effect of stressful events / stressors on the surface.
· Surface structure of solids / metals. Important surface properties of solid
substances. Geometric, physical, chemical surface properties. Interface Chemistry
in solids.
· Happens at the interface solid - liquid. Sorption happening. Interaction surface
gases, oxygen, hydrogen. The consequences of the interaction metal - oxygen, metal - hydrogen
thermodynamic and kinetic aspects of the process, their impact on properties
metal surfaces to damage the metal. Erosion, cavitation.
· Happens at the interface solid / metal - electrolyte. Double layer. Electrically
charged interface. Electrochemical properties of electron-conductive materials,
especially metals. Thermodynamic description of processes at the interface metal - electrolyte
nobility of metals. Kinetics of electrochemical processes at the phase interface,
passivity of metals. Heterogenizace conditions at the interface metal electrolyte.
Consequences of the electrochemical processes at the interface, corrosive attack.
· Happens at the interface solid - solid (metal - solid). Contact and
tribological properties, adhesion, wear - abrasion, erosion, contact
damage.
Disposal method of surface treatment, processing, machining and surface coating.
Basic processes of surface engineering.
· Methods of evaluation and study of surface modified surface layers;
chemical surface composition, its structure, roughness, physical - chemical
properties.
Exercise:
· Entering separate works - papers.
This process to limit damaging events resulting effect of stress events /
stressors on the surface. Processing, machining and surface coating.
· Supporting technological processes - surface pretreatment. Mechanical and chemical
processes. Coating cladding (rolling, explosion). Department students:
Properties clad coatings.
· Dip coatings. Coating surfacing, dipping into the melt, thermal
spraying. Diffusion alloying surface. Department students: Characteristics cremation
coatings.
Process of the preparation of coatings in a vacuum, CVD, PVD, evaporation / sputtering.
Laser technology - the transformation hardening, surface melting,
alloying / cladding laser pulse processing - shock hardening. Paper
students: Characteristics of thin coatings.
· Coatings of electrolytes. Galvanic coatings. Autocatalytic coating.
· Non-metallic inorganic coatings. Conversion coatings Al-ox, phosphate conversion
coatings, chromate, reactive coating, blackening, blueing. Dying
stainless steels. Enamels, unloading - brick lining.
· Organic coatings. Types of organic coatings. The composition of paints.
Removal of organic coatings.
· Utility and protective properties of coatings, modified surfaces.
· Student Papers: The protective properties of metallic, inorganic non-metallic
coatings. Protective properties of organic coatings. The use of metallic coatings
(Zn, Cd, Sn, Al, Cu, Ni, Cr). Editing and surface coating as protection against
corrosion, wear, high temperatures.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction
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