Author:Schmid, OEDate:1992This study examines the effect that a partial substitution of nickel with nitrogen has on the deformation behaviour of a metastable austenitic stainless steel, AISI 301. The effect on the tensile deformation behaviour is studied in detail ...Read more
Author:Seerane, Mandy; Ndlangamandla, P; Machaka, RonaldDate:Oct 2016Metal injection moulding (MIM) is a near-net-shaping powder metallurgy technique suitable for the cost-effective mass production of small and complex components. In this paper, the effects of the metal powder particle size on the final ...Read more
Author:Seerane, Mandy N; Ndlangamandla, P; Machaka, RonaldDate:Oct 2016Metal injection moulding (MIM) is a near-net-shaping powder metallurgy technique suitable for the cost-effective mass production of small and complex components. In this paper, the effects of the metal powder particle size on the final ...Read more
Author:Van Rooyen, IJ; Neethling, JH; Henry, A; Janzén, EDate:Oct 2010The integrity and property behaviour of the SiC layer of the TRISO coated particle for high temperature reactors (HTR) are very important. The SiC is the main barrier for gaseous and metallic fission product release. An investigation was ...Read more
Author:Mhlongo, Gugu H; Dhlamini, MS; Ntwaeaborwa, OM; Swart, HC; Hillie, KTDate:Jul 2011Tb3+-Pr3+, and Eu3+-Pr3+ ion pairs co-doped in a SiO2 matrix were prepared by a sol-gel method. Co-doping of Eu3+ and Tb3+ ions with Pr3+ in SiO2 resulted in the quenching of Eu3+ and Tb3+ emissions with increasing Pr3+ concentrations. The ...Read more
Author:Chapple, Stephen A; Ferg, EDate:Nov 2006Cotton has many desirable properties, but is flammable. The flame retardant treatment of cotton is an important textile process. To study the effect of a sol-gel phosphate-based flame-retardant coating on fabric properties (flammability, ...Read more
Author:Moller, H; Govender, G; Rossouw, P; Stumpf, WDate:2011Alloy A356 is one of the most popular alloys used for semisolid metal forming. The heat treatment cycles that are currently applied to semisolid processed components are mostly those that are in use for dendritic casting alloys. The assumption ...Read more
Author:Arthur, Nana KK; Malabi, Khorommbi P; Baloyi, Pincuss; Moller, H; Pityana, Sisa LDate:Nov 2016The Optomec Laser Engineered Net Shaping (LENS®) system is a laser-based platform that relies on computer-aided design (CAD) files to design and produce 3D printed components. This system is comprised of a 1 kW laser used to melt metal powders ...Read more
Author:Squelch, AP; Milev, AM; Acheampong, E; Dlokweni, T; Janse van Rensburg, A; Watson, BPDate:Nov 2001The general influence of regional support on local stope conditions is not always well
understood and a number of anomalous conditions, both positive and negative, have been reported in the vicinity of regional supports. Mining in similar ...Read more
Author:Matsui, K; Hachiya, Y; Maina, JW; Kikuta, Y; Nagae, TDate:Jan 2006This paper presents recentupdates of DBALM (Dynamic Back Analysis for Layer Moduli) software whose solver is based on exi-symmetric FEM and was first developed in 1993. Examples of airfield pavement application are also presented. The results ...Read more
Author:Matsui, K; Hachiya, Y; Maina, JW; Kikuta, Y; Nagae, TDate:2006The determination of pavement layer moduli from falling weight deflec-tometer test data is known as backcalculation analysis. Generally, back-calculation analysis is unstable—greatly influenced by several causes of error. They may be categorized ...Read more
Author:Muchavi, Noluntu S; Raganya, Mampai L; Machaka, R; Motsi, Glenda T; Makhatha, EDate:Nov 2022Metastable ß-Ti alloys intended for orthopaedic implants typically possess undesirable a', a", precipitates, which increase the elastic modulus. Non-toxic Sn was reported as an effective suppressor of a', a" and precipitates. Furthermore, ...Read more
Author:Ssemakalu, CC; Pillay, M; Ubomba-Jaswa, Eunice; Motaung, KSDate:Sep 2014Cholera remains a problem in developing countries. This is attributed to the unavailability of proper water treatment, sanitary infrastructure and poor hygiene. As a consequence, countries facing cholera outbreaks rely on interventions such ...Read more
Author:Smit, E; Prinsloo, LC; Nel, JM; Grobler, AF; Sparrow, RWDate:Jul 2011The most abundant and efficient light harvesting, energy transfer and transduction systems are found in nature within the process of photosynthesis. Although the processing sequences of an absorbed solar photon in the photosynthetic apparatus ...Read more
Author:Du Toit, L; Bennett, NC; Nickless, A; Whiting, MJDate:May 2012In subterranean species where excavation is energetically expensive, efficient spatial navigation is vital to reducing the costs of locating important resources such as food and mates. While spatial navigational ability is positively correlated ...Read more
Author:Mpofu, Mvikel; Ngobese, Sibusiso SG; Maphalala, B; Roberts, David P; Khan, SumayaDate:Jan 2021This paper details an assessment of stemming practices at a South African opencast coal mine and their influence on ground vibration and air blast. Quantitative and qualitative analysis methods were used for the study. The parameters assessed ...Read more
Author:Hatch, GP; Tainton, NMDate:Jun 1997Grazing trials were established at two sites in the semi-arid savanna (Lowveld) of KwaZulu-Natal. The sites differed initially in range composition. Llanwarne was dominated by Themeda triandra, Panicum maximum and P. coloratum, and Dordrecht ...Read more
Author:Mfusi, Busisiwe J; Mathe, Ntombizodwa R; Popoola, Patricia A; Tshabalala, Lerato CDate:Oct 2019The AlSi10Mg alloy is known for its castability, corrosion resistance, high heat conductivity, low weight and good weldability. The applications of the aluminium alloy components includes heat exchangers that are subjected to high temperatures ...Read more
Author:Thabethe, S; Arendse, CJ; Mwakikunga, Bonex WDate:Dec 2014Advanced core–shell FeSi@SiO(subx) nanowires are observed when FeCl(sub3) vapour is made to flow over a SiO(sub2)/Si substrate at 1100 degress C. The thickness of the SiO(subx) sheath (d0) is found to depend inversely as the period of time ...Read more