dc.contributor.author |
Tichapondwa, Shepherd Masimba
|
|
dc.contributor.author |
Focke, Walter Wilhelm
|
|
dc.contributor.author |
Del Fabbro, Olinto
|
|
dc.contributor.author |
Mkhize, Sfiso S.
|
|
dc.contributor.author |
Muller, E.
|
|
dc.date.accessioned |
2012-05-25T08:01:22Z |
|
dc.date.available |
2012-05-25T08:01:22Z |
|
dc.date.issued |
2011-07 |
|
dc.description.abstract |
Silicon dispersions in water are used to produce pyrotechnic
time delay compositions. The propensity of the silicon
to react with water and to produce hazardous hydrogen
gas must be suppressed. To this end, the effect of surface
modifications and medium pH on the rate of corrosion of
silicon was studied at ambient temperature. It was found
that the rate of hydrogen evolution increased with
increasing pH. Silanes proved to be more effective silicon
corrosion inhibitors than alcohols, with vinyl tris
(2-methoxyethoxy) silane producing the best results. Differential
thermal analysis (DTA) studies were performed
using a near-stoichiometric amount of lead chromate as
oxidant. Comparable combustion behavior was observed
when both the fuel and the oxidant powders were either
uncoated or silane modified. Mixtures of neat oxidant with
silane-coated silicon showed poor burn behavior and this was attributed to poor particle–particle mixing due to the
mismatch in surface energies. |
en_US |
dc.description.librarian |
ai2012 |
en |
dc.description.sponsorship |
The THRIP programme of the
Department of Trade and Industry and the National Research
Foundation as well as AEL |
en_US |
dc.description.uri |
http://tandfonline.com/loi/uegm20 |
en_US |
dc.identifier.citation |
Tichapondwa, SM, Focke, WW, Del Fabbro, O, Mkhize, S & Muller, E 2011, 'Suppressing H2 evolution by silicon powder dispersions', Journal of Energetic Materials, vol 29, no. 4, pp. 326-343. |
en_US |
dc.identifier.issn |
0737-0652 (print) |
|
dc.identifier.issn |
1545-8822 (online) |
|
dc.identifier.other |
10.1080/07370652.2010.529100 |
|
dc.identifier.uri |
http://hdl.handle.net/2263/18887 |
|
dc.language.iso |
en |
en_US |
dc.publisher |
Taylor & Francis |
en_US |
dc.rights |
© Taylor & Francis Group, LLC. This is an electronic version of an article published in Journal of Energetic Materials, vol. 29, no. 4, pp. 326-343, July 2011. Journal of Energetic Materials is available online at: http://tandfonline.com/loi/uegm20. |
en_US |
dc.subject |
Oxidation |
en_US |
dc.subject |
Silicon |
en_US |
dc.subject.lcsh |
Silicon -- Oxidation |
en |
dc.subject.lcsh |
Hydrogen |
en |
dc.subject.lcsh |
Oxidizing agents |
en |
dc.title |
Suppressing H2 evolution by silicon powder dispersions |
en_US |
dc.type |
Postprint Article |
en_US |