By Isaac Chang, Yuyuan Zhao
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Additional resources for Advances in powder metallurgy: Properties, processing and applications
The former requires the metal to be melted at elevated temperatures and hence is energy intensive. g. turnings and spent lubricant). In contrast, powder metallurgy produces specially shaped products directly from the powder of either pure metal or alloy through sintering, often pressurised, at temperatures much lower than that used to melt the metal. It is therefore simple in processing equipment and operation, effective in product quality control, and low in energy input, and produces less waste.
One product is desired in large volumes without specification changes. 1 Application to electronic solders Electronic solders are used to make the solder pastes that are used in an electronic device assembly on a very large scale (thousands of tons per year). 10 Centrifugal atomisation of steel at 70 kg min–1 to ~100 mm powder. g. Type III at 25–45 mm, Type IV at 20–38 mm. In the early days some producers used gas atomisation to make these products and found yields as low as 20%, as well as problems with oxygen pick-up and satellite formation.
Woodhead Publishing Limited, 2013 2 Forming metal powders by electrolysis G. Z. 19 Abstract: Fossil fuels will eventually be replaced by renewables. Currently, the most feasible and efficient way of utilising renewable energy is to convert it to electricity. In response to this change, fossil energy-based pyrometallurgical processes will inevitably shift to electricity driven processes. This chapter considers the feasibility of direct conversion of mineral to metal powder using a new electrochemical method, the FFC Cambridge process (Fray, Farthing and Chen).
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