1.                  Chemical metallurgy topic

Leader: Tamás. Kékesi, professor (DSc)

Subject

Lecturer

Subject’s dossier is?

Complex exam questions

Which semester be included (Fall / Spring)

  1. Surface technologies

Tamás Török Dr. professor

yes

  1. Description and characterization of surfaces and techniques for studying/testing their surface conditions.
  2. Solid thin film deposition techniques from gas phase and characterization of such deposits by a detailed analysis, for example, of the diamond like carbon (DLC) coatings.
  3.  Description and characterization of coating systems applied primarily for the corrosion protection of carbon steels, and detailed analysis of one of them like, for example, hot-dip galvanizing (Zn coating).
  4. Mechanism of the bond formation between the steel substrates and vitreous enamel coatings together with the quantitative analysis/testing of the bonding zone by in depth Glow Discharge Optical Emission Spectrometry (GD OES).
  5. Modern destructive and non-destructive testing techniques first of all for analysing organic coating layers/systems.
  6. Detailed description of the unit operations of the electroplating technologies (for example that of zinc electroplating) and specific parameters and features of the controlling system.

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  1. Chemical Metallurgy-I

Tamás Török Dr. professor

yes

  1. Specificities of metallic bonding in comparison to the other types of chemical bonds.
  2. Thermodynamic equilibrium diagrams (e.g. that of the so-called Ellingham ones) together with their applicability in metallurgical systems.
  3. Description of the role of metallurgical factors like, for example, the chemical oxidation-reduction reactions coupled with transport processes in the materials transformation process kinetics.
  4. Description and characterization of the corrosion (materials degradation) processes together with their typical mechanisms.
  5. Review (description) of a given modern metals (metallurgical) technology via characterising all the major extraction, processing and surface finishing steps.

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  1. Chemical Metallurgy-II (Theoretical fundamentals of processes for metal production)

Tamás Kékesi Dr., professor

yes

  1. Determination of the thermodynamic functions of reactions.
  2. Chemical processes of carbothermic reduction, the concept and the role of oxygen potential in the metal-oxide system.
  3. The significance, thermodynamic conditions and limits of selective oxidation to be applied in chemical metallurgy.
  4. The kinetics of metallurgical reactions, the determination of the rate constant and the activation energy.
  5. Equilibria and possibilities of separation of metal ions in aqueous media.
  6. The equilibria and kinetics of electrode processes, and the factors affecting the efficiency of electrolysis.

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  1. Processes of Metal Extraction and Refining

Tamás Kékesi Dr., professor

yes

  1. Physical preparation of primary and secondary raw materials for metal extraction.
  2. The processes of pyrometallurgical metal extraction and refining.
  3. The electrode processes and the practical efficiency of electrorefining.
  4. Extraction processes of pure metals by hydrometallurgical operations.
  5. Preparation of high-purity metals.
  6. The types and processing methods of metal containing waste materials.

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2.                 Foundry topic

Leader: Jenő Dúl, research professor (CSc)

Subject

Lecturer

Subject’s dossier is?

Complex exam questions

Which semester be included (Fall / Spring)

  1. Theoretical basics and simulation of foundry processes

Dániel Molnár, PhD

associate professor

yes

  1. Casting solidification, physical background and thermodynamics. Theory of the feeding system design, elements of derived solidification.
  2. Interpretation of fillability and flowability, melt flow in the gating system in case of different pouring methods.
  3. Residual stresses of castings, mathematical solutions for stress calculation.
  4. Simulation of foundry processes. Attributes of given casting methods and the considerations of the technological parameters.
  5. Analytical and numerical methods for the calculation of heat conduction. Programming of heat conduction using control volume method.

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 3.                 Interfacial- and  nanotechnology topic

Leader: Dr. George Kaptay, professor, corresponding member of the Hungarian Academy of Sciences

Subject

Lecturer

Subject’s dossier is?

Complex exam questions

Which semester be included (Fall / Spring)

  1. 1.    Art of Doing Science

György Kaptay Dr.

professor

yes

 

F

  1. Bulk and Interfacial Equilibrium of Materials

György Kaptay Dr.

professor

yes

  1. Basic equations of Calphad (bulk thermodynamics).
    1. Interfacial energies: their nomenclature and modelling their temperature- and concentration dependence.
    2. Basic equation for modelling thermodynamic and thermophysical properties. 
    3. Interfacial forces: basic equations, classification of interfacial forces and how they fir the newtonian mechanics 
    4. Basic equations of nano-Calphad (thermodynamics of nano-materials).

all

  1. Nanotechnology

Péter Baumli Dr.

associate professor

yes

  1. Synthesis methods of metal nanoparticles, compare the methods.
  2. Synthesis of compound nanoparticle, how can be modified the morphology and the particle size.
  3. The possibilities of the production of nanocomposites.
  4. Preparation of the nanowire sensors, their applicability and „Principle of operation".
  5. Describe the possibilities of application of nanostructured materials in your own PhD research field.

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 4.                 Metalforming topic

Leader: György Krállics Dr, associate professor (PhD)

 

Subject

Lecturer

Subject’s dossier is?

Complex exam questions

Which semester be included (Fall / Spring)

  1. Theory of metal forming

Dr. Krállics György

associate professor

no

1. Application different tensors for the determination of stress and strain state of deformable body. Eigen values and eigen vectors of tensors.

2. Constitutive equations for the describing of the behaviour of materials. Summarize the properties of the elastic, the viscous and the plastic continuum.

3. The role of the tribology in the metal forming. Explain the various equations of friction. Application of different lubricant for hot and cold forming.

4. Damage during the plastic deformation. Application of various theories of ductile fracture for the formability of sheet and bulk material.

5. Methods of classical forming analysis for the process planning. Compare the finite element method

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  1. Cold Metalforming Processes

Sándor Kovács Dr.

senior lecturer

 

yes

  1. Interpretation of cold rolling technology:
  2. advantages & disadvantages, process (pre-process and post-process included),equipment & rolling mills, raw materials & products (application fields),lubrication & cooling.
  3. Interpretation of mechanical analysis of strip in the rolling gap. Thermal conditions in the rolls and in the flat product. Planning limits and objective functions for optimizing.
  4. Interpretation of cold extrusion and forging technologies:
  5. types, advantages & disadvantages, process (pre-process and post-process included
  6. equipment & forming devices, dies, raw materials & products (application fields)
  7. lubrication & cooling, Principles of planning of technology
  8. Interpretation of mechanical analysis of wire/bar in the drawing die in case of wire/bar drawing. Thermal condition in the wire and in the die. Planning limits and objective functions for optimizing.
  9. Interpretation of sheet metalforming technologies (processes, operation principles, equipment, dies, lubrication, raw material). Sheet straightening, shearing, sheet bending, deep drawing, stretching.

S

 

 5.                 Physical metallurgy, heat treatment topic.

Leader: Dr. Mertinger Valéria, professor (PhD)

 

Subject

Lecturer

Subject’s dossier is?

Complex exam questions

Which semester be included (Fall / Spring)

  1. X-ray diffraction methods

Dr. Valéria Mertinger

Professor

yes

  1. The role of X-ray diffraction techniques in fine structure analysis. Benefits, disadvantages, limits.
  2. The practical applications and limits of X-ray diffraction qualitative and quantitative analysis.
  3. X-ray diffraction anisotropy examinations, information content and application areas of the different methods.
  4. The role, importance and X-ray diffraction measurement method of residual stress.

5. Profile analysis and application fields in material science.

all

  1. Solidification

Dr. Tamás Mende, associate professor

yes

  1. Draw the follow type of phase diagrams: limited solubility between A and B, at T1 temperature there is an eutectic reaction.
  2. Write the base processes of eutectic solidificaiton.
  3. Draw the phase diagram of Fe-C alloy system, and write the phase transformations from 1500°C to room temperature, in case of 3weight% C.
  4. Write the principles of grain nucleation and growth.
  5. Write and draw the processes of microsegregation.

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6.                          Materials informatics  topic

Leader: Zoltán Gácsi Dr., professor (DSc)

 

Subject

Lecturer

Subject’s dossier is?

Complex exam questions

Which semester be included (Fall / Spring)

  1. Anisotropy examinations

Dr. Márton Benke, associate professor

yes

  1. Interpretation of crystallographic texture, its effect on material properties, on interference function, representation of rolling and fiber textures.
  2. Interpretation of X-ray diffraction-based pole figure measurements. Defocusing correction, information content of pole figures, deficiencies and limits of pole figures.
  3. Interpretation of ODF, its information content, texture components. 
  4. Interpretation of EBSD examinations. Orientation mapping, phase mapping, pole figure production, phenomenon of quality index.
  5. Interpretation of TEM orientation examinations. Orientation mapping, phase mapping, misorientation measurements.

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 7.                   High-temperature equipment and energy management

Leader: Árpád Palotás Dr. professor (PhD)

 

Subject

Lecturer

Subject’s dossier is?

Complex exam questions

Which semester be included (Fall / Spring)

Transmission processes of airpollutants

Dr. István Szűcs, professor

yes

1. Fundamental conception of air pollution control and air cleaning, vertical structure of the atmosphere, troposphere, phenomenon of the inverse thermal curve of air

2. Formation processes of the harmful gaseous airpollutants (NOx, CO, SOx,HCl, Cl2, unburned radicals) and solid particle

3. Type of air pollutant sources – point (chimney), diffuse (big industrial buildings), territory and line (moving machines) sources

4. Basic characteristics of the emitting point sources, effective stack height calculation for point sources

5. Formulas of coefficients of turbulent dispersion (σx, σz)

         6. Calculation and diagram of concentration field around of point sources

7. Calculation of concentration field of area diffuse sources

8. Calculation of immision concentration around of line sources

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 8.                      Ceramics and technologies topic

Leader: László A. Gömze Dr., professor (CSc)

 

Subject

Lecturer

Subject’s dossier is?

Complex exam questions

Which semester be included (Fall / Spring)

  1. Mechanics and Processing of Ceramics

Dr. László A. Gömze, professor

yes

1.    Rheo-mechanical characterization of ceramic raw materials – compare the deformation-stress and deformation-time curves of Voight-Kelvin and Maxwell materials.

2.    Describe and explain the mechanical stress relaxation in ceramic reinforced complex materials like asphalt pavement.

3.    Toughness, cyclical fatigue and crack propagation in technical ceramics like Si3N4, SiC, ZrO2, Al2O3.

4.    Mechano-chemical activation and phase transformation in ceramic raw materials like convectional brick clays during their crushing and grinding.

5.    Relationship between mechanical properties and micro- and macrostructures and porosity of ceramics – increasing plasticity through pore structures.

F

 

  1. Technology of composite materials_Ct

 

Dr. László A. Gömze, professor

yes

  1. The most important and popular matrix materials of composites.
  2. The most important and popular reinforcement materials of composites.
  3. Processing and properties of ceramic matrix composites.
  4. Processing and properties of metal matrix composites.
  5. Processing and properties of polymer matrix composites

F

 

9.            Polymer technologies topic

Leader: Dr. Marossy Kálmán, egyetemi tanár (PhD)

 

Subject

Lecturer

Subject’s dossier is?

Complex exam questions

Physics of Polymers

Dr. Marossy Kálmán

yes

1. Define molecular weight, degree of polymerization! Explain polydispersity and its importance for the applicability of polymers.

2. Explain the crystallinity of polymers, show the requirements of forming crystalline structures! Introduce testing methods to evaluate crystalline contents.

3. What is the relaxation of polymers? Explain how relaxation processes affect the physical properties of polymers! Show the correlation between the mechanical, electrical and thermal behaviors?

4. Define the miscibility of polymers with additives and other polymers, show the thermo dynamical requirements of compatibility! What is the practical importance of polymer mixtures?

5. Co-polymers and macromolecules not classified as polymers. What techniques can be used to examine their structure?

PVC materials

Dr. Marossy Kálmán

yes

  1. Explain the super molecular structure of PVC! How is it formed and how it affects the properties of PVC products?
  2. Introduce the stabilizers for PVC! Group the known stabilizers by performance, biological effects and optical properties.
  3. PVC as a polymer is self extinguishing. Why are flame-retardants included in PVC compositions? List some examples!
  4. List the additives for for preparing impact resistant PVC compositions! Explain, how the different types work, the structures they are forming! What is a processing window?
  5. Group PVC plasticizers by their chemical structure, performance and compatibility! What are the requirements they have to fulfill?

Introduction to the Chemistry of Polymers

Dr. Szabó Tamás

yes

  1. Ordering the polymer producing reactions from the organic chemistry perspective.
  2. Kinetic description of chain polymerization, show the parameters to affect the process, explain their effect.
  3. Kinetic description of stepwise polymerization; show the factors controlling the properties of the resulting polymers, describe and explain the Carothers’ equation, demonstrate how it treats special cases.
  4. Explain the definition of polymer analogue reactions, how can they be used for producing specialty polymers and modify existing ones.
  5. Chemical structure of polymers and the resulting secondary and more advanced structures. Demonstrate, how they will generate the polymers’ macroscopic behavior using thermo mechanical graphs.

Rheology of Polymer Processing

Dr. Czél György

yes

1)      How does the viscosity of melt of polymeric material depend on the characteristics of structure and environment?

2)      What kind of rheological models shall be applied for describing the pseudo-plastic behaviour of polymers?

3)      How does the polymer melt flow in the melt channel and in the die cavity? What kind of enveloping surface is necessary to cover the velocity profile in the flux tube?

4)      What means are available for determining the viscosity and shear-sensitivity of polymers? List some types of rheometers and explain their measurement principles.

5)      What are the theoretical fundamentals of finite element injection moulding simulation? What kind of models are applied by the simulation for calculating the filling of cavity and thermal condition? What kind of results can be obtained by simulation?

  

 10.            Chemical processes and technology topic

Leader: Béla Dr. Viskolcz professor (CSc)

 

Subject

Lecturer

Subject’s dossier is?

Complex exam questions

Which semester be included (Fall / Spring)

  1. Organic chemical technologies for engineers

 

Dr. Zsolt Fejes associate professor

yes

1. Most important petrochemical processes and their parameters. Polyethylene and polypropylene production.

2. Industrial technologies regarding alkylation, acylation, halogenation.

3. Industrial technologies for producing monomers of polyurethanes and PVC

4. Industrial technologies regarding nitration, sulfonation and sulfation

5. Industrial technologies regarding oxidation, reduction, diazotation and azo coupling

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  1. Molecular Simulations of Complex Systems, Molecular Design and Calculations of Thermochemical properties

 

Dr. Milán Szőri associate professor

yes

1. Advantages and limitations of computational chemistry in structural characterization.

2. Virtual combinatorial chemistry studies.

3. Applied model chemistries for estimating thermochemical properties. Discussion about the performances of these model chemistries.

4. Theoretical background of the absolute rate constant calculations based on the calculated potential energy surface. Advantages and limitations of the computed rate constants for modelling experiment.

5. Theoretical background for molecular models of adsorption processes. Benefits and limitations.

all

  1. Application of Theoretical Chemistry Methods for Industrial Processes

 

Dr. Béla Viskolcz professor

yes

1. Potential energy surfaces of reaction mechanism and elementary reactions. Advantages, disadvantages and limitations of computational methods. Theory versus industrial, experimental observations and literature

2. Reaction Networks and their interpretation and applicability of optimization of industrial processes.

3. Interpretation of elementary processes occurring catalysts, their effect on reaction mechanism. Catalysts surface properties and catalytic activity.

4. Creation of database using theoretical methods, validation and consistency checks

5.Mechanisms based on theoretical calculations: accuracy, advantages and limitations of their applicability in practice. Predictions for industry processes.

all

  1. Data Analysis

Dr. Olivér Bánhidi

associate professor

 

  1. Propability variables, distributions, expectable value, standard deviation,
  2. significance-level, estimation.
  3. Tests for examination of rthe expectable value and that of the standard deviation,
  4. confidence intervall and its application.
  5. Testing for outliers, principles of ANOVA and its application.
  6. The concept of independency and correlation among data heaps.
  7. 5. Correlation and regression, multivariable correlation, principal component analysis.

all

 

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