The reactivity of manganese-lead chromate-barium chromate delay composition.
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Accession number;01A0317367
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| Title;The reactivity of manganese-lead chromate-barium chromate delay composition. |
| Author;
NAKAMURA H
(Kyusyu Inst. Technol., Kitakyusyu, Jpn)
YAMAMOTO H
(Kyusyu Inst. Technol., Kitakyusyu, Jpn)
AKIYOSHI M
(Kyusyu Inst. Technol., Kitakyusyu, Jpn)
HARA Y
(Kyusyu Inst. Technol., Kitakyusyu, Jpn)
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Journal Title;Journal of the Japan Explosives Society
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Journal Code:F0476A
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ISSN:1340-2781
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VOL.62;NO.1;PAGE.1-7(2001)
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| Figure&Table&Reference;FIG.12, REF.3 |
| Pub. Country;Japan |
| Language;English |
| Abstract;The thermal analyses, the analyses of combustion residue, and the combustion characteristics measurements such as burning rate or combustion temperature were carried out to clarify the thermal and combustion reaction mechanisms of the manganese-lead chromate-barium chromate delay composition. The following results were obtained. The main reaction of the manganese-lead chromate-barium chromate delay composition was the oxidation of manganese by lead chromate. Barium chromate acted as a burning rate modifier, i.e. the larger its content, the less its burning rate. The thermal analyses of manganese-lead chromate binary mixture and manganese-lead chromate-barium chromate ternary mixture showed a broad exothermic peak over 200 to 750.DEG.C. in atmospheric condition, but under reduced pressure, it showed an intense exothermic reaction. The heat of combustion of the delay composition had a maximum value at the composition of manganese/lead chromate=30/70 by weight without barium chromate, but the compositions which contained a larger percentage of manganese than this showed a larger linear burning rate. The pressure index of combustion is small, indicating that a solid state reaction played an important role in the combustion. (author abst.) |
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