Author:Moodie, BDate:1963The first observations carried out on the coke samples were of a quantitative nature, but the desirability of evaluating the coke quantitatively soon became evident.Read more
Author:Moodie, BDate:1967Samples consisting of various specimens of char prepared at e Klippoortjie plant from No. 5 and No. 4 seam coal were submitted with the request that the Institute should ascertain, if possible, whether the agglomeration of the particles due ...Read more
Author:Moodie, BDate:1954Records show that the first microscopic observations were carried out on coal in the year 1830 by Lindley. The apparatus he used was crude and his work was mostly confined to the examination of fossilized leaves found in certain coals.Read more
Author:Tlotleng, Monnamme; Akinlabi, E; Shukla, M; Pityana, Sisa LDate:Mar 2015Hydroxyapatite (HAP) is the most researched calcium phosphate material in the field of biomaterials to be used for bone re-engineering applications; given its attractive properties. Plasma spraying is the best available industrial method that ...Read more
Author:Tlotleng, Monnamme; Akinlabi, E; Shukla, M; Pityana, Sisa LDate:Feb 2014Bio-composite coatings of 20 wt.%, HAP and 80 wt.%, HAP were synthesized on Ti-6Al-4V substrates using LACS technique. The coatings were produced with a laser power of 2.5 kW, powder-laser spot trailing by 5 s. The coatings were analyzed for ...Read more
Author:Mutombo, K; Rossouw, P; Govender, GDate:Oct 2009One of the most effective ways of improving the fuel consumption and hence reducing the environmental impact of transport vehicles is via reduction in mass. This has resulted in the increased use of magnesium (Mg) to reduce the mass of vehicles. ...Read more
Author:Moshokoa, Nthabiseng; Raganya, Mampai L; Obadele, BA; Machaka, Ronald; Makhatha, MEDate:Oct 2020β-type titanium alloys are acquiring research interest in orthopaedic applications because of their exceptional properties such as moderate strength, good biocompatibility and corrosion resistance, high ductility and low elastic modulus. The ...Read more
Author:Kabongo, GL; Mhlongo, Gugu H; Malwela, T; Mothudi, BM; Hillie, KT; Dhlamini, MSDate:Apr 2014Un-doped and Tb(Sup3+) doped ZnO nanocrystals with different concentrations of Tb(Sup3+) were synthesized by a sol–gel method and their photoluminescence (PL) properties were investigated. The successful incorporation of Tb(sup3+) ions with ...Read more
Author:Adesina, OS; Popoola, API; Pityana, Sisa L; Oloruntoba, DTDate:Nov 2017The enhancement of the tribological properties of titanium (Ti-6Al-4V) has been the subject of wide range research over the years. The constraints associated with Ti-6Al-4V in severe tribological conditions due of its low hardness and poor ...Read more
Author:Olakanmi, EO; Sepako, M; Morake, J; Hoosain, Shaik E; Pityana, Sisa LDate:Dec 2018This study examines the dependence of microstructural characteristics, crack frequency and diffusion kinetics of functionally graded (FGM) titanium aluminide coatings reinforced with TiC on laser energy density (LED). Samples deposited on a ...Read more
Author:Mrwata, K; Siyasiya, C; Arthur, Nana KKDate:Nov 2023This study investigated the influence of beta stabilizer niobium on the microstructure and hardness of Ti-6Al-4V. The relationship between increased the concentration of alloying elements into Ti-6Al-4V is generally associated with an increase ...Read more
Author:Van Rooyen, CorneyDate:Jul 2007Heat input plays an important role in the microstructural development of 12%Cr martensitic stainless steel. The microstructure of low-C 12%Cr martensitic stainless steel resulting from laser cladding was investigated. For 410L a ferritic ...Read more
Author:Booysen, TN; Jamiru, T; Adegbola, T; Arthur, Nana KKDate:Nov 2023Three-dimensional printing (3D), also known as metal additive manufacturing (MAM), fabricates parts or components from different feedstocks: wires, powders or sheets. This process differs from traditional manufacturing techniques such as ...Read more
Author:Okoro, OM; Machaka, Ronald; Lephuthing, SS; Awotunde, MA; Olubambi, PADate:Nov 2021In this study, the role of multiwall carbon nanotubes (MWCNT) on the microstructural evolution and mechanical properties of Ti6Al4V-based composites was investigated. This was conducted by dispersing different concentrations (0.5, 1.0 and 1.5 ...Read more
Author:Adebiyi, DI; Popoola, API; Pityana, Sisa LDate:Sep 2014Multiple track laser alloying is characterised by additional heat treatment and differences in the amount of powder deposited at the overlap regions. These result in different microstructural and phase evolution at these regions, which are ...Read more
Author:Adebiyi, DI; Popoola, API; Pityana, Sisa LDate:Sep 2014Multiple track laser alloying is characterised by additional heat treatment and differences in the amount of powder deposited at the overlap regions. These result in different microstructural and phase evolution at these regions, which are ...Read more
Author:Lengopeng, T; Tlotleng, Monnamme; Pityana, Sisa LDate:Nov 2016The advent of additive manufacturing presented the new-era where complex structures can be prototype and rapidly manufactured from a computer aided device file. Robust industries such as the aerospace and medicinal require 3D printed complex ...Read more
Author:Mgangira, Martin BDate:Jul 2008The utilisation of advanced measurement techniques should assist in the characterization of pavement materials at a micro-scale. The motivating factor for such an approach is that material properties at the micro-level have a critical role ...Read more
Author:Tlotleng, MonnammeDate:Feb 2019This study reports on the microstructure, phase identification and hardness property of the LENS-manufactured binary Ti-Al alloy which was achieved via laser in situ alloying. The in situ alloying method, using laser beam as an energy source, ...Read more
Author:Arthur, Nana KK; Siyasiya, C; Pityana, Sisa L; Tlotleng, MonnammeDate:May 2021Alloy development opens the way to create new materials for specialized processes, and attain materials that are usually difficult to acquire. Property enhancements and part performance is achievable in an exciting new way when this technique ...Read more