• Article  

      Brownian-like kinematics of ball milling for particulate structural modeling 

      Doumanidis, C. C.; Kaabi, H. A. Al; Alzaabi, A. S. M.; Gunduz, I. E.; Rebholz, Claus; Doumanidis, C. C. (2016)
      Ball milling motion has been previously studied through computationally expensive, off-line experimental video processing and numerical simulations by the discrete element method. This research establishes a more efficient ...
    • Article  

      Design of ball-milling experiments on Bi2Te3 thermoelectric material 

      Kanatzia, A.; Papageorgiou, Ch; Lioutas, Ch; Kyratsi, Theodora (2013)
      In this work, factorial ball-milling experiments have been applied to Bi2Te3 material, for the first time, aiming to investigate the effect of the main process parameters on the structural features and thermoelectric ...
    • Article  

      Effect of antimony-doping and germanium on the highly efficient thermoelectric Si-rich-Mg2(Si,Sn,Ge) materials 

      Vlachos, N.; Polymeris, G. S.; Manoli, M.; Hatzikraniotis, E.; Khan, A. U.; Lioutas, C. B.; Stefanaki, E. C.; Pavlidou, E.; Paraskevopoulos, K. M.; Giapintzakis, John; Kyratsi, Theodora (2017)
      Two series of materials (a) Mg2Si0.55-ySn0.4Ge0.05Sby, 0 ≤ y ≤ 0.0175 and (b) Mg2Si0.5875-xSn0.4GexSb0.0125, 0 ≤ x ≤ 0.20 have been developed and studied in terms of structural features and thermoelectric properties/performance. ...
    • Article  

      Effect of ball milling on the carbon sequestration efficiency of serpentinized peridotites 

      Rigopoulos, I.; Delimitis, A.; Ioannou, I.; Efstathiou, A. M.; Kyratsi, Theodora (2018)
      Mineral carbonation has been suggested as a safe carbon capture and storage (CCS) strategy for the mitigation of climate change. This study investigates the effect of ball milling on the CO2 sequestration capacity of ...
    • Article  

      Enhancing the rate of ex situ mineral carbonation in dunites via ball milling 

      Rigopoulos, I.; Vasiliades, M. A.; Ioannou, I.; Efstathiou, A. M.; Godelitsas, A.; Kyratsi, Theodora (2016)
      The investigation of potential options for CO2 sequestration is of vital importance for alleviating the ongoing climate problem. This paper presents an efficient method for enhancing the ex situ carbonation of dunites. The ...
    • Article  

      Exothermic reaction characteristics of continuously ball-milled Al/Ni powder compacts 

      Hadjiafxenti, A.; Gunduz, I. E.; Kyratsi, Theodora; Doumanidis, C. C.; Rebholz, Claus (2013)
      Self-propagating reactions in compacted pellets of continuously low-energy ball-milled aluminium (Al) and nickel (Ni) powders at a composition corresponding to AlNi3 were investigated. The formation of a bi-modal structure ...
    • Article  

      Fabrication of nanocrystalline Mg 2Si via ball milling process: Structural studies 

      Ioannou, M.; Hatzikraniotis, E.; Lioutas, C.; Hassapis, T.; Altantzis, T.; Paraskevopoulos, K. M.; Kyratsi, Theodora (2012)
      In this work, nanocrystalline Mg 2Si material was fabricated via wet ball milling process using n-hexane as process control agent. Milling parameters, with emphasis on milling time and ball size, and conditions were studied ...
    • Article  

      Mechanics and energetics modeling of ball-milled metal foil and particle structures 

      Aureli, M.; Doumanidis, C. C.; Gunduz, I. E.; Hussien, A. G. S.; Liao, Y.; Rebholz, Claus; Doumanidis, C. C. (2017)
      The reported research establishes a semi-analytical computational predictive model of fractal microstructure in ball-milled metal foils and powder particulates, with emphasis on its transformation mechanics via an energy-based ...
    • Conference Object  

      Mechanics Science-Enabled Nanoheater Multi-Layer Materials Manufactured by Ball Milling 

      Farzanah, K. H. H.; Hassan, M. O. M.; Muhairi, R. A. S. Al; Rebholz, Claus; Gunduz, I. E.; Doumanidis, C. C. (Materials Research Society, 2017)
      This article reports investigation of the effects of high-rate stochastic micro-mechanics on the produced particulate size distribution during ball milling of reactive bimetallic foils (nanoheaters), by experimental and ...
    • Article  

      A method to enhance the CO2 storage capacity of pyroxenitic rocks 

      Rigopoulos, I.; Vasiliades, M. A.; Petallidou, Klito C.; Ioannou, I.; Efstathiou, A. M.; Kyratsi, Theodora (2015)
      Investigation of new efficient pathways for CO2 sequestration is of great significance for the mitigation of climate change. Ultramafic rocks are considered among the most promising lithotypes for the safe storage of CO2 ...
    • Article  

      Non-equilibrium microscale thermomechanical modeling of bimetallic particulate fractal structures during ball milling fabrication 

      Aureli, M.; Doumanidis, C. C.; Gunduz, I. E.; Hussien, A. G. S.; Liao, Y.; Jaffar, S. M.; Rebholz, Claus; Doumanidis, C. C. (2017)
      Nanostructured bimetallic reactive multilayers can be conveniently produced by ball milling of elemental powders. This research explores the non-equilibrium microscale conductive thermal transport in ball-milled particulate ...
    • Article  

      On the potential use of quarry waste material for CO2 sequestration 

      Rigopoulos, I.; Petallidou, Klito C.; Vasiliades, M. A.; Delimitis, A.; Ioannou, I.; Efstathiou, A. M.; Kyratsi, Theodora (2016)
      The use of solid wastes rich in Ca2+, Mg2+ and Fe2+ for the ex situ sequestration of CO2 could provide an economically and technologically viable option for the reduction of anthropogenic CO2 emissions. Here, we investigate ...
    • Article  

      Solid-state synthesis of Mg 2Si via short-duration ball-milling and low-temperature annealing 

      Ioannou, M.; Chrissafis, K.; Pavlidou, E.; Gascoin, F.; Kyratsi, Theodora (2013)
      In this work, a short duration ball-milling of elemental Mg and Si followed by a thermal treatment is suggested in order to synthesize magnesium silicide via solid-state reaction. The formation of magnesium silicide was ...
    • Article  

      Spark ignitable ball milled powders of Al and Ni at NiAl composition 

      Hadjiafxenti, A.; Gunduz, I. E.; Doumanidis, C. C.; Rebholz, Claus (2014)
      Low-energy ball milling of aluminum and nickel particles with an overall composition corresponding to the NiAl intermetallic phase was performed up to milling durations of 13 h. The milled powders and cold-compacted pellets ...
    • Article  

      Spark ignitable Ni-Al ball-milled powders for bonding applications 

      Gunduz, I. E.; Kyriakou, A.; Vlachos, N.; Kyratsi, Theodora; Doumanidis, C. C.; Son, S.; Rebholz, Claus (2014)
      Ball milling of aluminum (Al) and nickel (Ni) particles at the NiAl composition can produce reactive powders with low spark ignition thresholds similar to magnetron sputtered multilayer foils (MFs). Such powders can replace ...
    • Article  

      Structural features of ball-milled nanostructured K2Bi 8Se13 thermoelectric material 

      Lioutas, C. B.; Hatzikraniotis, E.; Ioannou, M.; Paraskevopoulos, K. M.; Kyratsi, Theodora (2011)
      In this work, K2Bi8Se13 material was ball-milled in order to develop nanostructures through the modification of structural features. Structural changes during ball-milling were followed by powder X-ray diffraction measurements, ...
    • Article  

      Thermoelectric properties of nanocrystalline PbTe synthesized by mechanical alloying 

      Papageorgiou, Ch; Hatzikraniotis, E.; Lioutas, Ch B.; Frangis, N.; Valassiades, O.; Paraskevopoulos, K. M.; Kyratsi, Theodora (2010)
      In this work, nanocrystalline lead telluride powder was synthesized from high-purity elements by mechanical alloying by means of a planetary ball-milling procedure. The milling medium was tungsten carbide, and the diameter ...