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Timing Parameters of Pyrotechnic Igniter Based on Magnesium Powder

, Socorro, New Mexico, 161 p. [4] ZHU, C.-G., WANG, H.-Z., MIN, L. 2014. Ignition Temperature of Magnesium Powder and Pyrotechnic Composition. Journal of Energetic Materials, 32 , 219 – 226. ISSN 0737-0652 [5] SCHEID, M., KUSCHE, Ch., SCHRÖDER, V., BARTH, U., 2013. Suitability of ignition source “exploding wire” for determination of dust explosion characteristics in the 20-L-sphere. Journal of Loss Prevention in the Process Industries , 26 , 1542 – 1548. ISSN 0950-4230 [6] TAVEAU J.R., GOING J.E S., HOCHGREB S., LEMKOWITZ, S.M., ROEKAERTS D. J. E. M

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Pecularities of Gas Analysis in Al and Mg Powders

Abstract

A new inert gas fusion method has been developed for determining oxygen and nitrogen in Al and Mg powders. The approach, the methods and some results are discussed. Dissociation of AlSi10Mg powder, 99.9 % Mg powder, Mg alloy powder and MgO p.a. are presented.

Open access
Evolution of microstructure and electrochemical corrosion characteristics of cold compacted magnesium

Abstract

The main advantage of magnesium and its alloys is high specific strength and biocompatibility. A modern approach to magnesium-based materials preparation is powder metallurgy. This technique allows preparation of new materials with a unique structure, chemical composition, and controlled porosity. In this study, cold compaction of magnesium powder was studied. Magnesium powder of average particle size of 30 μm was compacted applying pressures of 100 MPa, 200 MPa, 300 MPa, 400 MPa and 500 MPa at laboratory temperature. Influence of compacting pressure was studied with microstructural and electrochemical corrosion characteristics analysis. The resulting microstructure was studied in terms of light and electron microscopy. Obtained electrochemical characteristics were compared with those of wrought magnesium. Compacting pressure had a significant influence on microstructure and electrochemical characteristics of prepared bulk magnesium. With the increase in compaction pressure, the porosity decreased. Compacting pressures of 300 MPa, 400 MPa and 500 MPa led to the similar microstructure of the prepared material. Polarization resistance of compacted magnesium was much lower and samples degraded faster when compared to wrought magnesium. Also, the corrosion degradation mechanism changed due to the microstructural differences between the material states.

Open access