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Browsing University of Hertfordshire by Author "Chrysanthou, A."
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Performance and testing of glass-ceramic sealant used to join anode-supported-electrolyte to Crofer22APU in planar solid oxide fuel cells
Smeacetto, F.; Chrysanthou, A.; Salvo, M.; Zhang, Z.; Ferraris, M. (2009)This work describes the performance and testing of a glass-ceramic sealant used to join the ceramic electrolyte (anode-supported-electrolyte (ASE)) to the metallic interconnect (Crofer22APU) in planar SOFC stacks. The ... -
Phase equilibria in the metal-sulfur-oxygen system and selective reduction of metal oxides and sulfides : Part I. The carbothermic reduction and calcination of complex mineral sulfides
Jha, A.; Tang, S.; Chrysanthou, A. (1996)The difference in the standard Gibbs free energy for the formation of any two oxides or sulfides is the chemical potential for selective reduction of metals from complex minerals. The magnitude of the Gibbs free energy ... -
Porosity control of in situ forming tungsten carbide in laser additive manufacturing (LAM)
Sevcenko, P.; Chrysanthou, A.; Kong, C. Y.; Nicolson, P. (2020)The effect of powder compression on the formation of porosity when heating with a laser beam has been investigated. The starting materials were elemental powders of Fe, W and C which were locally melted to form WC in Fe ... -
Preparation and microstructure of AlOTiC composites by self-propagated high temperature synthesis
Chrysanthou, A.; Saidi, A.; Aylott, C.E.W.; Wood, J.V. (1994-01-04)This investigation was concerned with the production of ceramic composites based on AlOTiC by means of self-propagated high temperature synthesis. When titanium and carbon black mixed with AlO powder reacted, the ignition ... -
Preparation of ceramic composite powders from waste colliery minestones
Chrysanthou, A.; Sanchuan, T. (1994-03-01)An investigation was carried out to examine the potential for producing ceramic composites from waste colliery minestones. The nature of the raw materials had a marked influence on the kinetics and the product morphology. ... -
Preparation of Fe-TiC composites by the thermal-explosion mode of combustion synthesis
Saidi, A.; Wood, J.V.; Kellie, J.L.F.; Chrysanthou, A. (1997-01-01)Titanium carbide ferrous matrix composites were produced by means of the thermal explosion mode of combustion synthesis. The combusting behaviour of the powder mixtures was investigated. The effect of the processing variables ... -
Process feasibility analysis of self-pierce riveting high strength low alloy steel
Han, L.; Thornton, M.; Hewitt, R.; Chrysanthou, A.; Shergold, M. (American Society of Mechanical Engineers (ASME), 2010)Self-Piercing Riveting (SPR) has been widely used in automotive Body in White (BIW) assembly as an alternative to Resistance Spot Welding (RSW), in particular for joining of dissimilar materials, for example Steels to ... -
Production of copper-matrix composites by in situ processing
Chrysanthou, A.; Erbaccio, G. (1995-12-15)Reaction synthesis routes were studied as a means of production of copper-matrix composites. Routes for providing fine and uniform dispersions of TiC, TiB and WC in a copper-rich matrix were identified. The reasons for ... -
Re-evaluation of the thermodynamic stability of calcium oxide
Chrysanthou, A.; Grieveson, P. (1991-01-01)The reaction CaO+3C = CaC+CO was studied under controlled atmospheres between 1580°C and 1700°C. Reaction was observed to take place at CO pressures higher than those predicted by the available thermodynamic data. By ... -
Reaction synthesis of carbide-reinforced cast iron
Chrysanthou, A.; Davies, N.W.; Li, J.; Tsakiropoulos, P.; Chinyamakobvu, O.S. (1996-03-15) -
Reduction/carburisation of columbite concentrate
Terry, B.S.; Azubike, D.C.; Chrysanthou, A. (1994-06-01)The carbothermic reduction of columbite has been investigated at 1400°C utilising coal and graphite as alternative sources of carbon. Reduction to an iron-carbon matrix and NbC and TaC carbides occurs readily with complete ... -
Self-piercing riveting : Properties, processing and applications
Chrysanthou, A.; Sun, Xin; School of Engineering and Technology (Woodhead Publishing, Cambridge, UK., 2013-11)Comprehensively reviews the process, equipment, and corrosion behaviour of self-piercing riveting. Describes the process of evaluation and modelling of strength of self-piercing riveted joints, quality control methods and ... -
Simultaneous carburisation and oxidation of niobium in the presence of carbon monoxide
Chrysanthou, A.; Grieveson, P. (1993-01-29)During reaction with CO, niobium was observed to carburise and oxidise simultaneously, with NbC, NbO and NbO forming as intermediate products before complete conversion to NbC. It was shown that the reason for such a complex ... -
A study of the combustion synthesis of MoSi and MoSi-matrix composites
Chrysanthou, A.; Jenkins, R.C.; Whiting, M.J.; Tsakiropoulos, P. (1996-08)The combustion synthesis of MoSi from elemental powders was investigated. Higher completion of the reaction was achieved by the use of prior compaction of powders and higher heating rates. The reaction mechanism was studied ... -
Synthesis, luminescence and phase composition of samarium-doped zinc phosphate glass ceramics
Stoeva, Z.; Patronov, G.; Chrysanthou, A.; Tonchev, D.; Kasap, S. (2013-06)Samarium doped zinc phosphates ySm2O3–(72–y)ZnO–28P2O5 where y varies between 0·03 and 0·28 mol% were synthesised using the melt quenching method and investigated by photoluminescence, powder x-ray diffraction, differential ... -
Thermal cycling and ageing of a glass-ceramic sealant for planar SOFCs
Smeacetto, F.; Chrysanthou, A.; Salvo, M.; Moskalewicz, T.; Bytner, F. D'Herin; Ajitdoss, L. C.; Ferraris, M. (2011-09)Thermal cycling and thermal ageing tests were performed on Crofer22APU/glass-ceramic/Anode-Supported-Electrolyte (ASE) joined samples in air at the SOFC operating temperature of 800 degrees C. The Crofer22APU had been ... -
Thermal cycling of Crofer22APU-sealant-anode supported electrolyte joined structures for planar SOFCs up to 3000 h
Smeacetto, F.; Salvo, M.; Chrysanthou, A.; Moskalewicz, T. (2013)Thermal cyclic tests in air were performed for Crofer22APU/glass-ceramic/ Anode-Supported-Electrolyte (ASE) joined samples for a total period of 3000 h. Different cooling rates from the SOFC operating temperature of 800 C ... -
Thermal diffusivity of Ni–Ti SMAs
Zanotti, C.; Giuliani, P.; Riva, G.; Tuissi, A.; Chrysanthou, A. (2009)In this paper thermal diffusivity dependence on temperature of NiTi SMAs alloy in the range from 300 K up to 1500 K is reported and the experimental–numerical approach adopted for this scope is described. The experimental ... -
TiC-TiB2 composites : A review of phase relationships, processing and properties
Vallauri, D.; Adrian, I. C. Atias; Chrysanthou, A. (2008)Ceramic-matrix composites (CMCs) based on TiC-TiB2 have attracted enormous interest during recent years because, in comparison to singlephase ceramics, they exhibit superior properties including high hardness, good wear ...