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Research Articles (Materials Science and Metallurgical Engineering): Recent submissions
Now showing items 161-180 of 261
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(Southern African Institute of Mining and Metallurgy, 2016-10)Metal 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 ...
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(Elsevier, 2010-07)The effect of Laves phase (Fe2Nb) formation on the Charpy impact toughness of the ferritic stainless steel type AISI 441 was investigated. The steel exhibited good room temperature toughness after solution treatment ...
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(Elsevier, 2011-01)Electrolytic extraction followed by XRD analysis of precipitates after isothermal annealing of an AISI 441 ferritic stainless steel between 600 and 850 ◦C produced the time–temperature–precipitation (TTP) diagram for the ...
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(American Chemical Society, 2016-09)The sintering of model TiO2-supported cobalt catalysts has been studied. The TiO2 supports used were anatase, P25 (85% anatase-15% rutile) and rutile. The catalysts were characterized at each stage of treatment. ...
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(Elsevier, 2016-09)The crystal structures of unknown phases found in slags from the production of low-carbon ferrochromium were studied by powder and single-crystal X-ray diffraction. Two phases of Na2−δ (Al, Mg, Cr)17O25 composition were ...
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(Springer, 2016-06)Furnace tap-holes vary in design depending on the type of furnace and process involved, but share one common trait: the tap-hole must be opened and closed periodically. In general tap-holes are plugged with refractory clay ...
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(Southern African Institute of Mining and Metallurgy, 2016-04)A petrochemical company experiences premature thermal fatigue failure of the casting moulds used in catalyst production. The aim of the project was to find an alternative alloy that would outperform the current low-alloy cast ...
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(Elsevier, 2016-05)The oxygen potential prevailing during iron ore sintering wasmeasuredwith a zirconia sensor in a series of sinter pot experiments. Thiswas done to get a better indication of the redox conditions during commercial sintering. ...
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(Southern African Institute of Mining and Metallurgy, 2015-10)The need to reduce weight while maintaining good mechanical properties in materials used in the automotive industry has over the years seen an increased exploitation of various steels to meet this new demand. In line with ...
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(Southern African Institute of Mining and Metallurgy, 2015-10)South Africa recently announced a resurgence in its commercial nuclear power programme. The implications for the development of the necessary high-level manpower within South Africa’s tertiary educational system and its ...
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(Southern African Institute of Mining and Metallurgy, 2015-03)In April 2013 a 48 MVA submerged arc furnace producing silicomanganese was excavated in South Africa. Since the high shell temperatures recorded in the tap-hole area resulted in the furnace being switched out for ...
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(Taylor & Francis, 2015-05)Wear resistance of synthetic graphite against liquid industrial platinum group metals furnace matte (Cu–Fe–Ni–S) was investigated from 800°C to 1450°C at a contact time of 1 hour. Graphite resistance was measured by the ...
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(Southern African Institute of Mining and Metallurgy, 2015-10)The relationship between niobium content and austenite grain growth has been investigated through hot rolling simulation on a Bähr dilatometer. The effect of delay time between passes during rough rolling in Nbmicroall ...
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(Southern African Institute of Mining and Metallurgy, 2015)In the chlorination process for TiO2 pigment production, blends of titania feedstocks such as ilmenite, synthetic rutile (SR), natural rutile, upgraded slag, and chloride-grade slag are reacted with coke and chlorine at ...
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(Southern African Institute of Mining and Metallurgy, 2015-06)Four sulphide minerals – pyrite (FeS2), pyrrhotite (Fe1–xS), pentlandite ([Ni,Fe]9S8), and chalcopyrite (CuFeS2) – contain the base metals and most of the iron in concentrates of platinum group metals (PGMs). In ...
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(Southern African Institute of Mining and Metallurgy, 2015-02)This paper discusses a study that investigated different underground bulk air heat exchanger (>100 m3/s) design criteria. A literature review found that no single document exists covering all design criteria for different ...
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(Springer, 2015-12)Stable operation of submerged-arc furnaces producing high-carbon ferromanganese (HCFeMn) and silicomanganese (SiMn) requires tapping of consistent amounts of liquid slag and metal. Minimal effort to initiate and sustain ...
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(Springer, 2015-04)Silicomanganese (SiMn) as an alloy supplies silicon and manganese to the steelmaking industry. It is produced through carbothermic reduction in a submerged arc furnace. The slag and metal are typically tapped through a ...
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(Springer, 2015-04)The purpose of the study presented here is to determine to what extent chemical reactions between carbon-based refractory and slag or metal in the tap-hole of a SiMn furnace can contribute to wear of tap-hole refractory. ...
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(Southern African Institute of Mining and Metallurgy, 2014-04)Aluminium alloys have gained popularity in many industries due to their high strength and low weight. One shortcoming of aluminium alloys is their poor resistance to abrasion and erosion wear compared to materials such ...
Now showing items 161-180 of 261