Ahmad Reza Rastkar - PhD

Growth of vertical carbon nanotube forest on  metals 

The crystalline structure of oxides on the surface 

Adherent transfer of softer metal on hard oxide crystals

The optical and numerical image of DC plasma glow around a concentric circular magnetron

Growth of vertical carbon nanotube forest on  metals 

Work Experience

08/2005 - present, Associate Professor / Manager in Materials Science and Engineering, Tehran, Iran

08/2005 – Present

Associate Professor / Manager in Materials Science and Engineering

Laser and Plasma Research Institute, Shahid Beheshti University, Tehran, Iran

●  Editor of scientific papers and technical writing of papers and documents using MS Office (Word, PowerPoint, Excel).

● Analytical and numerical solutions of diffusion-based processes in thermal and plasma enhanced CVD of metallic and nonmetallic materials using Finite Difference Methods (FDM) with Python programming language.

●  Responsible participation in setting up and managing the department of Plasma Technology.

●  Scientific management of interdisciplinary teams in the field of

— Technical writing of scientific reports and papers.

— Transfer of the development results from the application-oriented research and technology environment to the pilot series maturity up to the successful implementation in industrial plants for material selection, forming technology, heat treatment, tribology, nanotechnology, welding technology, laser material processing and plasma processes in surface technology, cryogenic technology, thin-film technology and additive manufacturing.

— Successful Conception, design and homemade construction of devices in the field of functional surfaces of nitrides, carbides, oxides, diamond-like carbon and nanocarbon products through plasma nitriding, CVD/PVD chemical/physical vapor deposition and cathode atomization/sputtering.

— Achievement of applications of plasma discharges for large-area welding, brazing and repairing of steel, aluminum, Ni-super alloys turbine blades and titanium alloys as an additive manufacturing method.

— Application of innovative methods for the growth of vertically aligned nanotubes on different metallic and nonmetallic substrate thorough thermal and plasma activated CVD in one Chamber.

— Investigation of Analytical and Numerical methods through Finite Difference Methods (FDM) in diffusion based processes of thermal and plasma enhanced CVD.

●  Management, implementation, evaluation and presentation of measurements and analyzes for layers and their surface characterization (e.g. hardness, friction, wear, mechanical, optical and electrical properties using light microscopy, SEM, FIB, TEM, AFM, EDS, XPS, XRD, impedance spectroscopy , GDOS, Raman or FTIR, DSC, TGA, micro and nano hardness testing, metallography and non-destructive testing techniques).

●  Working experience in the clean room area.

●  Teaching the courses of study in plasma surface technology, plasma laboratories, manufacturing processes, physical metallurgy, heat treatment, welding, non-destructive testing technology, advanced material analysis and thermodynamics.

●  Supervision of undergraduate and graduate students.

●  Experience in applying for and implementing third-party funded projects.

●  Recognized reviewer for international scientific journals (Journal of Surface & Coating Technology, Materials Science and Engineering A, Materials Letters).

 

05/2022–12/2022, Scientist / Project Manager- Munich - Germany

05/2022–12/2022, Scientist / Project Manager- Munich – Germany

● Repair, qualification and development of plasma etching systems.
● Plasma etching and production of Hard DLC Nano coatings on Nano-Chip tools through FE-SEM microscopes in clean rooms, OES spectroscopy.

2010 – 2015, Project Manager (part time) - Iran Organization of air Industries, Tehran, Iran

2010 – 2015, Project Manager (part time) – Iran Organization of air Industries , Tehran, Iran

●  Design and manufacture of advanced coatings on titanium alloys.

2000 – 2018, Project Manager (part time) - Iran Itok Consulting and Inspection Co., Tehran, Iran, IEI Inspection Co.

2000 – 2018, Project Manager (part time) – Iran Itok Consulting and Inspection Co., Tehran, Iran, IEI Inspection Co., Tehran, Iran  

●  Management, training and implementation of Non-Destructive Tests (VT, RT, UT, MT, PT, Phased Array, TOFD), Interpretation of X-ray films and Welding processes.

.

08/2007 - 10/2007, Visiting Researcher - Chemistry Department of University of Manchester, Manchester, UK

2000 – 2018, Project Manager (part time) – Iran Itok Consulting and Inspection Co., Tehran, Iran, IEI Inspection Co., Tehran, Iran

●  Visiting Research Fellowship, supported by the Royal Society of England (Application of Plasma in the control of environmental pollution by using corona and glow discharge plasma in different gases to convert the carbon based species into other products).

Qualifications

  • PhD in Metallurgy & Materials (Surface Engineering and Tribology), Birmingham University, 2000
  • MSc in Material Engineering (Materials Selection and Manufacturing) Tribology, Shiraz University, Iran, 1991
  • BSc in Materials Engineering, Shiraz University, Iran, 1988

Teaching

  • Plasma Surface Technology in BEng/MEng/PhD Plasma and Materials Science and Engineering
  • Plasma Laboratories in BEng/MEng Plasma and Materials Science and Engineering
  • Manufacturing Processes in BEng/MEng Materials Science and Engineering
  • Physical Metallurgy in BEng/MEng Materials Science and Engineering
  • Heat Treatment in BEng/MEng Materials Science and Engineering
  • Welding in BEng/MEng Materials Science and Engineering
  • Non-Destructive Testing technology in BEng/MEng Materials Science and Engineering
  • Advanced Material Analysis in BEng/MEng/PhD Plasma and Materials Science and Engineering
  • Thermodynamics Of Materials in BEng/MEng/PhD Plasma and Materials Science and Engineering

Personal Abilities

●  Very good command of English and German languages
●  Windows MS Office (Word, Excel, PowerPoint),  
Solidworks, Adobe Suite
Web Design with WordPress
●  Python, SQL, Finite Difference Methods, ●  SAP (MM, QM, PP)

List of journals and conferences papers

● Ahmad Reza Rastkar, Optical imaging and magnetic field simulation of a DC circular planar magnetron sputtering discharge, J. of Theoretical and Applied Physics (2023).

lhttps://jtap.srbiau.ac.ir/article_22070.html

 

● Javad Taghinejad, Ali Reza Niknam, Ahmad Reza Rastkar and Hamidreza Ghomi, Time-resolved evolution of collisional transient sheath in plasma source ion implantation, Phys. Scr. 96 (2021) 125623.

● Ahmad Reza Rastkar, Mohammad Heydarzadeh Sohi, Phase Identification and Fracture Strength of Plasma Brazed Joints of Ti 45Al 2Nb 2Mn 1B with Ti-Ni-Cu filler metals, December 2020. Materials Letters 286(5):129249.

https://dr-rastkar.com/phase-identification-plasma-brazed/

● Ahmad Reza Rastkar, Sur Coat Technol, 283 (2015) 10-21, Plasma enhanced paste aluminizing of Ti–45Al–2Nb–2Mn–1B with Al–Si alloy.

https://dr-rastkar.com/plasma-enhanced/

● Ahmad Reza Rastkar, Met. Mat. Trans A, 46(A) 9 (2015) 4132-4142,The Effects of Processing Time on the Microstructure and Composition of Plasma Pack-Aluminized and -Oxidized Surface Layers on Low Carbon Steel.

https://dr-rastkar.com/the-effects-of-processing-time-on-the-microstructure-and-composition-of-plasma-pack-aluminized-and-oxidized-surface-lay

 

● Ahmad Reza Rastkar, Applied Surface Science 276 (2013) 112– 119, Microstructural evolution and hardness of TiAl3 and TiAl2 phases on Ti–45Al–2Nb–2Mn–1B by plasma pack aluminizing

https://dr-rastkar.com/microstructural-evolution-and-hardness-of-tial3-and-tial2-phases-on-ti-45al

● Ahmad Reza Rastkar, Surf. inter. Ana., 2012, 44, 342–351, Surface modification and wear test of carbon steel by plasma electrolytic nitrocarburizing

https://dr-rastkar.com/surface-modification-and-wear-test-of-carbon-steel-by-plasma-electrolytic-nitrocarburizing/

● Ahmad Reza Rastkar, J N N, Volume 11, Number 6, June 2011 , pp. 5365-5373 (9) Effect of Pulsed Plasma Nitriding on Mechanical and Tribological Performance of Ck45 Steel

 https://dr-rastkar.com/effect-of-pulsed-plasma-nitriding-on-mechanical-and-tribologica/

●  Ahmad Reza Rastkar, B. Shokri, “Surface transformation of Ti-45Al-2Nb-2Mn-1B titanium Aluminide by electron beam melting”, Surf. Coat. Technol. 204 (2010) 1817-1822.

https://dr-rastkar.com/surface-transformation-of-ti-45al-2nb-2mn-1b-titanium-aluminide-by-electron-beam-melting/

●  Ahmad Reza Rastkar, B. Shokri, Surf & Coat Tech 202 (2008) 6038–6048, Structural and mechanical evaluation of the effect of oxygen boost diffusion on a gamma based titanium aluminide of Ti–45Al–2Nb–2Mn–1B

https://dr-rastkar.com/structural-and-mechanical-effect-of-oxygen-boost-diffusion-on-ti-45al-2nb-2mn-1b/

●  Ahmad Reza Rastkar, B. Shokri, Plasma Process. Polym. 6 (2009) S855–S859, Effect of Methane Pressure on the Size of Carbon Nanoparticles Deposited by Pulsed Plasma Enhanced Chemical Vapor Deposition

https://dr-rastkar.com/effect-of-methane-pressure-on-the-size-of-carbon-nanoparticles

●  Ahmad Reza Rastkar, Wear 258 (2005) 1616–1624, Characterization and tribological performance of oxide layers on a gamma based titanium aluminide

https://dr-rastkar.com/characterization-and-tribological-performance-of-oxide-layers-on-a-gamma-based-titanium-aluminide/

●  Ahmad Reza Rastkar, Wear 253 (2002) 1121–1131Tribological performance of plasma nitrided gamma based titanium aluminides

https://dr-rastkar.com/elementor-4544/

● Ahmad Reza Rastkar, A. Bloyce, T. Bell, “Sliding wear behaviour of two gamma-based titanium aluminides”, Wear 240 (1-2) (2000).

https://dr-rastkar.com/sliding-wear-titanium-aluminides/

Selected Presentations

 

●  A. R. Rastkar, “Plasma enhanced diffusion of Al-Si alloys on the surface of Ti-45Al-2Nb-2Mn-1B titanium aluminide”, Fifteenth International Conference on Plasma Surface Engineering-PSE 2016, Garmisch-Partenkirchen, Germany, September 12-16, 2016.

●  A. R. Rastkar, “Plasma electrolytic process compete gaseous plasma nitriding of AISI 1045 steel”, Twelfth International Conference on Plasma Surface Engineering (PSE 2010), Garmisch-Partenkirchen, Germany, September 13-17, 2010.

●  A. R. Rastkar, A. Kiani, B. Shokri, “Effect of pulsed plasma nitriding on Tribological performance of Ck45 steel”, 3 rd International Meeting on Developments in Materials, Processes and Applications of Emerging Technologies (MPA-2009), Manchester, UK, 21-23 July 2009.

●  A. R. Rastkar, M. Kabir, M. Amirzadeh and M. Rahimipour, “Effect of pressure on the size of carbon nanoparticles deposited by pulsed plasma enhanced CVD of methane”, Eleventh International Conference on Plasma Surface Engineering-PSE, Garmisch-Partenkirchen, Germany, September 15-19, 2008.

 

Industrial Services

DLC coating on Titanium Aluminides

DLC coating on Ti-45Al-2Nb-2Mn can grow up to several tenth of microns by extending Plasma Carburizing to be used as a heat barrier, corrosion and wear resistant coating.

Plasma Pack Aluminizing of Titanium Aluminides for the use in Air and Space Industries

Plasma packed aluminized thick layers on Steels, Titanium Alloys or Aluminides and other Ni-Super Alloys enhance the life time of the corresponding components several times against wear and corrosion.

Repair of 718 super Ni alloy using plasma brazing 

 Repair of Ni-Superalloy with application of plasma arc on the powders of filler material added before plasma on the surface and processed in 10 min. No cracking, No nonconformity or adverse effect of welding passes.

Certificates

Date and Signature

22.06.2023        A R Rastkar

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