Author:Machio, Christopher N; Chikwanda, HK; Chikosha, SDate:Mar 2011This paper reports the results of a study to determine the effect of process control agent (PCA) on the characteristics of Ti-Mg powders during milling. It has been shown that a 2% increase in PCA content leads to up to a 40% increase in yield ...Read more
Author:Pistorius, PC; Presoly, P; Tshilombo, GDate:Aug 2009Steel was sampled after calcium treatment at an industrial steel plant, and the inclusions identified by energy-dispersive X-ray microanalysis (EDX) on polished sections of the samples analysing the samples in a scanning electron microscope. ...Read more
Author:Pistorius, CP; Presoly, P; Tshilombo, KGDate:Aug 2006Calcium treatment of alumina inclusions, to convert the alumina to molten or partially molten calcium aluminates, is a well-established treatment for steel, to improve the castability of aluminium-killed steel. However, the role of magnesium ...Read more
Author:Machio, Christopher N; Nyabadza, D; Chikwanda, HK; Phasha, M; Sibanda, VMDate:Jun 2009A Ti-10wt.%Mg powder alloy has been produced by mechanical alloying. Elemental powders of Ti and Mg were ball milled in a Zoz-Simoloyer CM01 for 16 and 20 hours under argon. Mechanical alloying was followed by XRD, SEM and particle size ...Read more
Author:Kempster, PL; Smith, RDate:1985Using existing criteria from other countries, in conjunction with data on element toxicities and normal dietary intakes, drinking-water criteria for 56 aesthetic/physical and inorganic chemical determinants were proposed for South Africa.Read more
Author:Curle, Ulyate A; Wilkins, Jeremias DDate:Jan 2019Semi-solid processing works on the principal of a solidification temperature interval of a substance. The substance is heated to a temperature within this interval so that there exists a related solid-liquid fraction ratio. The substance with ...Read more
Author:Mushove, T; Chikwanda, HK; Machio, Christopher N; Ndlovu, SDate:Apr 2009This paper reports the preliminary results of an investigation on the synthesis of a Ti-Mg alloy powder through mechanochemical processing of TiO2 and Mg powders. TiO2 was mixed with elemental Mg according to a nominal stoichiometric composition ...Read more