Author:Tshwane, David M; Modiba, Rosinah; Govender, Gonasagren; Ngoepe, PE; Chauke, RDate:Jan 2021Adsorption of halogen on the metal surface has received much attention due to its technological applications and major relevance for material surface processing, corrosion protection and etching. In this work, first-principle approach was ...Read more
Author:Tshwane, David M; Modiba, Rosinah; Govender, Gonasagren; Ngoepe, PE; Chauke, HRDate:Dec 2021Fluorine molecules and ions are used as an etchant for metal surface processing. The presence of fluorine significantly influences the electrochemical behaviour on a metal surface, which has major relevance for etching, corrosion, electro-catalysis ...Read more
Author:Mathabathe, Maria N; Bolokang, Amogelang SDate:May 2022Contemporary ways of employing and combining existing materials are a requisite for meeting tomorrow’s engineering applications. This is upscaled by the potent attributes of remaining competitive by keeping costs effective while advancing the ...Read more
Author:Teffo, ML; Nyakane, NE; Seerane, M; Shongwe, MB; Machaka, RolandDate:Feb 2021The allotropic behavior of titanium is affected by many factors such as processing temperature and alloying elements. Using processing method with parameters that enhaces properties of the resulting alloy is imperative. In this study, CP-Ti, ...Read more
Author:Mogale, N; Matizamhuka, W; Machaka, Ronald; Shongwe, M; Yamabe-Mitarai, Y YDate:Jan 2021Ternary Ti-47.5Al-(1–3)Cr (at. %) and reference quaternary Ti-48Al-2Cr-2Nb (at. %) titanium aluminide alloys were processed from elemental powders utilizing mechanical milling, mechanical alloying and spark plasma sintering. The effect of Cr ...Read more
Author:Raganya, Mampai L; Moshokoa, N; Obadele, B; Makhatha, E; Machaka, RonaldDate:2021The effect of Nb in the glue site of the cluster-plus-glue atom model formula on the microstructure and mechanical properties of Ti-Mo alloy was investigated. Phase and microstructural analysis were performed by X-ray diffraction and electron ...Read more
Author:Moshokoa, Nthabiseng; Raganya, Mampai L; Obadele, BA; Olubambi, PA; Machaka, RonaldDate:2020The present study investigates the effect of solution treatment on the microstructure and mechanical properties of as-cast Ti-Mo alloys. The two alloys (Ti-8Mo and Ti-9Mo) were fabricated using a commercially available Arc re-melting furnace. ...Read more
Author:Magogodi, Steven M; Mathabathe, Maria N; Bolokang, Amogelang S; Siyasiya, CDate:Nov 2022Titanium aluminides (TiAl) have attracted industrial interest, particularly for high temperature applications owing to their promising mechanical properties. Due to the application of these materials to the marine environment it is therefore ...Read more
Author:Madigoe, Mandy N; Modiba, Rosinah; Lesley, Cornish, LDate:Nov 2022The aim of this study was to produce a titanium-based alloy with mainly ß-phase and reduced Young’s modulus for biomedical applications. Alloys Ti-Nbx-Ta5-Zr5 (x = 20, 30, 40 at.%Nb) were prepared by arc melting then solution annealed at 950 ...Read more
Author:Mnisi, VC; Sithole, ME; Modiba, RosinahDate:2021Elastic modulus is a very important physical aspect for biomaterials which is impartial to various replacements as artificially hip joints, bone plate, and gum implants since it measures the material’s resistance to be deformed elastically. ...Read more
Author:Phasha, MJ; Bolokang, Amogelang S; Kebede, Mesfin ADate:Feb 2021Density-functional theory (DFT) based first-principles calculations were used to investigate the crystal structure, binding energy, phase stability and elastic properties of body-centered cubic (BCC) W-based binary solid solutions. The effect ...Read more
Author:Bolokang, Amogelang S; Mathabathe, Maria N; Motaung, DE; Arendse, CJ; Swart, HCDate:Mar 2023We report on the microstructures and properties of Ti6Al4V alloys, which were achieved upon quenching in sea water medium with potential high cooling rate. The Ti6Al4V alloys were quenched at 1000 and 1100 °C, respectively. Moreover, the ...Read more
Author:Cobbinah, PV; Matizamhuka, W; Machaka, Ronald; Shongwe, MB; Yanabe-Mitaria, YDate:Jan 2021In this study, -TiAl based alloys of composition Ti-46.5Al-%xTa (x = 0.8, 4 and 8 at.%) were fabricated by mechanical alloying and consolidated by spark plasma sintering. The main objective of the study was to evaluate the influence Ta contents ...Read more
Author:Cobbinah, PV; Matizamhuka, W; Machaka, Ronald; Shongwe, MB; Yanabe-Mitaria, YDate:Jan 2021In this study, -TiAl based alloys of composition Ti-46.5Al-%xTa (x = 0.8, 4 and 8 at.%) were fabricated by mechanical alloying and consolidated by spark plasma sintering. The main objective of the study was to evaluate the influence Ta contents ...Read more
Author:Maponya, TG; Makgopa, K; Somo, TR; Tshwane, David M; Modibane, KDDate:Dec 2023Herein, a metal–organic framework (MIL-101(Cr)) was synthesized and functionalized with ethylenediamine-glutaraldehyde (ED-GA for removal of palladium (Pd2+) and platinum (Pt4+) from wastewater. The chemical structure, surface properties, ...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:Sebe, ID; Sithole, ME; Modiba, RosinahDate:Dec 2022Permanent magnet-based technologies are focusing on the use of t-phase magnetic alloys. The t-MnAl permanent magnetic alloys are interesting candidates to fill the performance gap between the expensive rare-earth-based magnets and the low ...Read more
Author:Miya, LE; Sithole, ME; Modiba, RosinahDate:Dec 2021The development of new Nd-Fe-B permanent magnets continues to be a pressing matter for the transition to a green economy. Permanent magnets have become significant in applications of highly efficient energy conversion machines and devices. ...Read more
Author:Raganya, Mampai L; Moshokoa, Nthabiseng; Obadele, BA; Olubambi, PA; Machaka, RonaldDate:2020Extensive efforts have been undertaken to develop Ti alloys consisting of single ß phase in order to substitute the a + ß phase in Ti-6Al-4V used as biomaterials. This study was aimed at investigating the tensile properties of solution treated ...Read more