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:
“Environmental cell” microscopy was applied for surveying gas reaction of hydrides inmagnesium base alloys, which are candidates for hydrogen storage materials in advanced hydrogenenergy systems. In order to clarify the mechanism of hydrogenation process, in-situ experiment hasbeen carried out by using a 200 kV transmission electron microscope (TEM) equipped with a newlydeveloped environmental cell, which is capable to 0.1 MPa in the temperature range between R.T. and200°C. When hydrogen gas reacted with magnesium powders, straightening of surface steps (60~70nm in height) was observed, indicating that volume expansion occurred. In addition, the formation ofMgH2 was indicated in selected-area-diffraction patterns (SADP). The precise study on this in-situexperiment, as well as its improvement, will be continued, with using transparent films
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.26-28.877.pdf
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