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  • 1
    Electronic Resource
    Electronic Resource
    Research and Development of Mg-Al-Sr Alloys (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 26-28 (Oct. 2007), p. 115-117 
    Details
    ISSN: 1662-8985
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The addition of strontium to Mg-Al based alloys offers good creep resistance to meet thematerial requirements for automotive applications. The composition, microstructure and mechanicalproperties of Mg-Al-Sr alloys are discussed in this paper. The effects of alloy elements such as Ca, Tiand Mn in Mg-Al-Sr alloy are summarized. Technologies for preparation of Mg-Sr master alloy weredeveloped, including mixture method and vacuum thermal reduction method which may also be usedfor preparation of Mg-Al-Sr alloys
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/39/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.26-28.115.pdf
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  • 2
    Electronic Resource
    Electronic Resource
    Preparation of Mg-Sr Alloy Using Electrochemical Reduction (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 26-28 (Oct. 2007), p. 119-123 
    Details
    ISSN: 1662-8985
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Suspended on Mg-base melt, SrCl2 was electrochemical reduced to prepare Mg-Sr alloy.The kinds of Sr-compounds, composition ratio of flux, temperature of molten salt and Mg-basemolten bath and recovery of Sr were discussed. According to theories and experiments, this paperpresents the relations between the adding flux and reduction of Sr-compounds with the technicalparameters. The electrode reactions and the Gibbs Free Energies were evaluated based onthermodynamics analysis. The results show that composition of flux played important roles in thereduction process. The optimized technical flow and parameters for the application of the new methodwere advised
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/39/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.26-28.119.pdf
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  • 3
    Electronic Resource
    Electronic Resource
    Preparation of Mg-Sr Alloys Using Vacuum Reduction: A Thermodynamics Approach (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 546-549 (May 2007), p. 463-466 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: At the present Mg-Sr alloy is usually produced by alloy mixing process ormelt-leaching-reduction process which has low productivity. A new process has been developedtermed “Preparation Mg-Sr alloys using vacuum thermal reduction”. The principle and procedure ofthe new process were discussed in this paper. The reduction thermodynamics was analyzed, includingestablishing the oxygen potential diagram of Sr, Mg, Si and Al, determination of main reactions, andevaluation of Gibbs free energy in vacuum. The results showed that Mg-Sr alloys can be obtained bysynchronous reduction of SrO and MgO from a mixture of MgO, SrO, Si, CaO. The equipment,reduction temperature and vacuum for the new process have been also discussed
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/16/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.546-549.463.pdf
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  • 4
    Electronic Resource
    Electronic Resource
    Study on Al Alloy Surfaces Treated by Ion Beams (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 561-565 (Oct. 2007), p. 211-214 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Plasma-enhanced ion beams are used for the surface modification of 2024 Al and 7075 Alalloy samples. The morphology of the treated surface of the samples is examined. The corrosionresistance and bending fatigue properties were measured on the treated and untreated samples. Theeffects of ion beam parameters are discussed. It is indicated that during the ion bombardment, cratersare formed and surface melting is produced on the treated surfaces. The effects of ion beambombardment are limited to the surface layer of samples. With the ion beam energies used in thisstudy, improved corrosion resistance was obtained from the treated surfaces of the samples
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/17/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.561-565.211.pdf
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  • 5
    Electronic Resource
    Electronic Resource
    Determination of Sr Content in Mg-Sr Alloys Using Faas (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 561-565 (Oct. 2007), p. 215-218 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The Air-acetylene Flame Atomic Absorption Spectrometry (FAAS) was used to measureSr content in Mg-Sr Alloys. The experiment conditions including acetylene flow rate, measurementheight, flame wavelength were studied and the disturbing factors were discussed. It was found that, asdissolution agent of alloys and LaCl3 as the deionization agent and flame wavelength being 460.7nm,the detection limits is 1.16mg/L and the relative standard deviations is less than 0.3% and the recoveryrates of Sr is more than 95%. The advantages of this method were summarized as: high sensitivity andprecision, low chemistry disruption, good selectivity, good recurrence characteristics of themeasuring conditions. The method is suitable for the control analysis and sample-system analysis ofdetermination Sr content in the Mg-Sr Master Alloys
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/17/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.561-565.215.pdf
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  • 6
    Electronic Resource
    Electronic Resource
    Preparation Technologies and Applications of Strontium-Magnesium Master Alloys (2005)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 488-489 (July 2005), p. 31-34 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: In this paper, effects of strontium on Mg alloys and preparation technology of Mg-Sr and Mg-Sr-Al master alloys were summarized respectively. Prospects and applications of Sr-Mg master alloys were analyzed too. The results showed that thermodynamics calculation of reaction between SrO and Mg(l) showed that molten Mg can reduce SrO, in which excess of molten. The microstructure of hypoeutectic Mg-Sr binary alloys is composed of primary Mg matrix, and laminary eutectic phase(Mg-Mg17Sr2),but the microstructure of Mg-Sr-Al alloy consists ofplate-like primary Al4Sr, laminary eutectic phase (Mg-Mg17Sr2 or Mg-Mg17Al12 orMg-Mg17Sr2-Mg17Al12) embedded in primary dendrites of magnesium matrix. Additive strontium in Mg alloys can refine it grains, reduce degree of porosity, improve mechanical and thermal properties, therefore, Mg-Sr master alloys can be served widely as an additive for modification or as a constituent of Mg alloys, Al alloys, Zn alloys, etc
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/10/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.488-489.31.pdf
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