Author:Tlotleng, Monnamme; Masina, Bathusile N; Pityana, Sisa LDate:Jan 2017The use of titanium aluminides as high temperature materials in the aerospace and automobile industries is becoming a reality since their early research and development in 1955. Their mechanical properties at elevated temperatures make them ...Read more
Author:Pretorius, CDate:Nov 2010The objective of this study was to determine whether a correlation exists between the quartz results obtained from direct-on-filter X-ray Diffraction analysis, direct-on-filter Fourier-Transform Infrared analysis and indirect analysis (Potassium ...Read more
Author:Mutombo, K; Kgomo, C; Rossouw, PDate:Oct 2014The interaction between the Ti6Al4V alloy and the mould materials was investigated. The alpha-case was characterized by Vickers hardness tester, optical and scanning electron microscopy equipped with electron dispersive X-ray spectrometry ...Read more
Author:Pityana, Sisa L; Rossouw, RDate:Oct 2008The aim of this work was to produce crack-free thin surface layers consisting of binary (Al-Ni, Al-Fe) and ternary (Al-Ni-Fe) intermetallic phases by means of a high power laser beam. The laser surface alloying was carried out by melting Fe ...Read more
Author:Pityana, Sisa LDate:Mar 2010Laser surface alloying of A1200 aluminium alloy was carried out using a 4.4 kW Nd:YAG laser. Powder mixtures of SiC and TiC hard particles were injected into the laser generated melt pool on the aluminium substrate using a commercial powder ...Read more
Author:Van Staden, WF; Buttner, U; Fourie, CJ; Srinivasu, VV; Hardie, GL; Perold, WJDate:Apr 2009Bilayers of PBCO and YBCO are grown epitaxially on MgO substrates using PLD. In this paper, researchers discuss the entire optimization process in detail, giving quantitative parameter values. Film characterization included XRD, AFM and ...Read more
Author:Radebe, N; Thwala, Melusi; Cele, LM; Sikhwivhilu, L; Musee, N; Shumbula, PDate:Aug 2013The current study seeks to investigate the dissolution dynamics of silver (nAg) and zinc oxide (nZnO) engineered nanoparticles (ENPs), and how this affects their uptake by aquatic higher plants. First, the influence of particle size and ...Read more
Author:Moloantoa, JR; Rammutla, KE; Mosuang, TE; Erasmus, RM; Hillie, KTDate:Jul 2011Au and Pt doped TiO2 nanocrystlas were prepared using the sol gel method. Diffuse Reflectance Spectroscopy (DRS) was used to study the characteristics of these precious metals and X-ray diffraction (XRD) with calculated lattice parameters was ...Read more