Search Results - "Sigalas, I."

Effects of Sintering Temperature on Crystallization and Fabrication of Porous Bioactive Glass Scaffolds for Bone Regeneration by Erasmus, E. P., Johnson, O. T., Sigalas, I., Massera, J.

“…In this work the sintering ability of borosilicate (S53B50), borophosphate (P40B10) and phosphate (Sr) bioactive glasses was investigated. The glass powders…”
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In vitro Evaluation of Porous borosilicate, borophosphate and phosphate Bioactive Glasses Scaffolds fabricated using Foaming Agent for Bone Regeneration by Erasmus, E. P., Sule, R., Johnson, O. T., Massera, J., Sigalas, I.

“…In this work, glasses within the borosilicate borophosphate and phosphate family were sintered into 3D porous scaffolds using 60 and 70 vol. % NH 4 (HCO 3 ) as…”
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Synthesis of boron suboxide (B6O) with alkaline earth metal oxide materials with improved properties by Ogunmuyiwa, E. N., Johnson, O. T., Sigalas, I.

“…The pure boron suboxide (B 6 O) powder admixed with 1.08 vol% of MgO, CaO, and CaCO 3 (corresponding to 1.5, 1.4, and 0.7 wt%, respectively) were synthesized…”
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Fe–B–C composites produced using spark plasma sintering by Rokebrand, P., Sigalas, I.

“…Fe–B–C composites were produced using iron and boron carbide powders. The powders were mixed to produce various compositions, ranging from 1vol.% Fe to…”
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Boron suboxide ultrahard materials by Herrmann, M., Sigalas, I., Thiele, M., Müller, M.M., Kleebe, H.-J., Michaelis, A.

“…B6O is a possible candidate as a superhard material with a hardness of 45GPa measured on single crystals. The first dense superhard B6O-materials were produced…”
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Wear, cutting forces and chip characteristics when dry turning ASTM Grade 2 austempered ductile iron with PcBN cutting tools under finishing conditions by Katuku, K., Koursaris, A., Sigalas, I.

“…Experimental studies of wear, cutting forces and chip characteristics when dry turning ASTM Grade 2 austempered ductile iron (ADI) with polycrystalline cubic…”
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Densification and micro-structural characteristics of spark plasma sintered Ti-Zr-Ta powders by Bayode, B.L., Lethabane, M.L., Olubambi, P.A., Sigalas, I., Shongwe, M.B., Ramakokovhu, M.M.

“…The fabrication of Ti-based alloys with enhanced properties for extreme applications is an insatiable quest in the materials engineering field. Optimization of…”
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Effect of SPS consolidation parameters on submicron Cu and Cu–CNT composites for thermal management by Sule, R., Olubambi, P.A., Sigalas, I., Asante, J.K.O., Garrett, J.C.

“…The effect of oxygen content on sub-micron sized copper and copper reinforced with CNTs was investigated using spark plasma sintering (SPS). The powders were…”
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Comparative study of reactive and non-reactive sintering route for producing B6O–TiB2 materials by Johnson, O.T, Sigalas, I., Herrmann, M.

“…Boron suboxide (B6O) based materials containing TiB2 additions were produced in this study via two routes (non-reactive and reactive sintering) and were…”
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cBN reinforced Y-α-SiAlON composites by Garrett, J.C., Sigalas, I., Herrmann, M., Olivier, E.J., O’Connell, J.H.

“…Dense α-Sialon–cBN composites were produced by FAST/SPS–sintering at 1575–1625°C. The hardness of the materials increases only up to 21GPa for materials with…”
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Synthesis and characterization of boron suboxide powder produced at ambient pressure condition by Johnson, O. T., Ogunmuyiwa, E. N., Sigalas, I.

“…Boron suboxide (B 6 O)−based materials have shown good properties which make them good candidates for cutting tool and other applications where abrasive wear…”
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Wear mechanisms of PcBN cutting tools when dry turning ASTM Grade 2 austempered ductile iron under finishing conditions by Katuku, K., Koursaris, A., Sigalas, I.

“…Experimental studies of dry finish turning of ASTM Grade 2 austempered ductile iron with PcBN cutting tools were carried out at cutting speeds ranging from 50…”
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Spark plasma sintering of sub-micron copper reinforced with ruthenium–carbon nanotube composites for thermal management applications by Sule, R., Olubambi, P.A., Sigalas, I., Asante, J.K.O., Garrett, J.C., Roos, W.D.

“…•The procedure to achieved good dispersion of Ru-CNTs was developed.•Influence of SPS parameters on Cu-CNT-Ru composites.•The CTE of Cu-2vol% CNT was reduced…”
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The low-pressure infiltration of diamond by silicon to form diamond–silicon carbide composites by Mlungwane, K., Herrmann, M., Sigalas, I.

“…The infiltration of fine-grained diamond preforms by molten silicon is limited by the blocking of the pores as a result of the volume increase during the…”
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Kinetics of grain growth in Ti-2.7Al-5.7Fe-6Mo-6V alloy by Mutava, T.D., Cornish, L.A., Sigalas, I.

“…The metastable (?Ti) alloy Ti-2.7Al-5.7Fe-6Mo-6V (wt%) was produced by semi-centrifugal casting of blended elemental powders. The phases were identified by…”
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Characterization of TiO2–MnO2 composite electrodes synthesized using spark plasma sintering technique by Tshephe, T.S., Olubambi, P.A., Sigalas, I., Ozoemena, K.I., Garrett, J., Sule, R.

“…Titanium-manganese oxide composites as suitable material for electrode in electrochemical capacitors application was synthesized using spark plasma sintering…”
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Hard and tough boron suboxide based composites by Shabalala, T.C., McLachlan, D.S., Sigalas, I., Herrmann, M.

“…Boron suboxide (B 6O) powder was synthesized at temperatures of about 1400 °C from the reaction of amorphous boron powder with boric acid. The synthesized B 6O…”
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Densification of liquid phase sintered silicon carbide by Can, A., Herrmann, M., McLachlan, D.S., Sigalas, I., Adler, J.

“…The densification and phase formation of liquid phase sintered silicon carbide (LPSSiC) with 10 wt.% additives were investigated. The ratio of the Al 2O 3/Y 2O…”
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Oxidation resistance of B6O-materials with different additives by Herrmann, M, Thiele, M, Jaenicke-Roessler, K, Freemantle, C S, Sigalas, I

“…The oxidation resistance of B6O materials with and without Y2O3/Al2O3 additives and a typical cBN material were analysed in dry and wet air using TG…”
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The wetting behaviour and reaction kinetics in diamond–silicon carbide systems by Mlungwane, K., Sigalas, I., Herrmann, M., Rodríguez, M.

“…The wetting behaviour of silicon on diamond and the interaction of diamond with molten silicon were investigated. It was found that diamond is well wetted by…”
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