Gas generating composition
First Claim
1. A gaseous nitrogen generating composition comprising a mixture of a metal azide and a material selected from the group consisting of:
- Fe2 O3, AlF3, Al2 O3 +Fe2 O3, B2 O3, CuCl, CuO, Fe3 O4, MnO2, SiO2, TiO2 and mixtures thereof, said materials being oxides and salt of elements lower in the electrochemical series of the elements than the metal component of the azide and being capable of liberating sufficient heat upon exothermic reaction with said azide to maintain a self-sustained combustion.
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Accused Products
Abstract
A solid composition capable of self-sustained combustion to produce gaseous nitrogen and nonvolatile solids as its combustion products comprises a mixture of a first metal azide and the oxide or salt of a second metal which second metal is below the first metal in the electrochemical series and which is capable of being substituted by the first metal in the oxide or salt. Many combinations of various components may be used, but some care is required to select only those combinations in which the solid products are nonvolatile at the temperatures encountered during the combustion. A representative system employes iron oxide and sodium azide according to the following reactions:
Fe.sub.2 O.sub.3 +6NaN.sub.3 →2Fe+3Na.sub.2 O+9N.sub.2 ↑
Another embodiment of the invention generates mixtures of nitrogen and other gases such as carbon dioxide, carbon monoxide and/or water particularly suitable for use in lasers. This is accomplished by adding to the mixture materials which react or decompose into the desired gases. If carbon monoxide or carbon dioxide is the desired additional gas, a metal carbonate may be used as the salt in the above reaction.
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Citations
15 Claims
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1. A gaseous nitrogen generating composition comprising a mixture of a metal azide and a material selected from the group consisting of:
- Fe2 O3, AlF3, Al2 O3 +Fe2 O3, B2 O3, CuCl, CuO, Fe3 O4, MnO2, SiO2, TiO2 and mixtures thereof, said materials being oxides and salt of elements lower in the electrochemical series of the elements than the metal component of the azide and being capable of liberating sufficient heat upon exothermic reaction with said azide to maintain a self-sustained combustion.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
Specification
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- Resources
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Current AssigneeUnited Technologies Corporation (Rtx Corporation)
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Original AssigneeUnited Technologies Corporation (Rtx Corporation)
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InventorsBreazeale, Jack D.
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Primary Examiner(s)Sebastian, Leland A.
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Assistant Examiner(s)Gluck, Irwin
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Application NumberUS05/386,899Time in Patent Office880 DaysField of Search252/188.3 R, 252/186, 252/188, 252/372, 149/26, 149/35, 280/150 AB, 423/410US Class Current149/35CPC Class CodesC06B 35/00 Compositions containing a m...C06D 5/00 Generation of pressure gas,...H01S 3/095 using chemical or thermal p...
