Results 181 to 190 of about 21,548 (233)

Atomic Force Microscopy of Ammonium Perchlorate

MRS Proceedings, 1992
AbstractWe have studied the (210) surface of ammonium perchlorate (NH4ClO4) with an atomic force microscope (AFM) in air. Large scale images show monomoreculat steps that are often aligned with major crystalline directions. Surface modification is clearly observed with forces as low as 30 nN, but is usually limited to the bottom and the sides of the ...
Minsun Yoo, Seokwon Yoon, Alex de Lozanne   +2 more
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Mechanoformation of ammonium perchlorate-potassium perchlorate solid solutions

Journal of Solid State Chemistry, 1981
Ammonium perchlorate-potassium perchlorate mixtures, upon pelletization, form a series of homogeneous solid solutions as manifested by X-ray powder diffractograms. Scanning electron microscopic studies throw light on the mechanism of the solid-solution formation. Solid solutions of ammonium perchlorate-potassium perchlorate have also been obtained by a
Pai Verneker, VR, Seetharamacharyulu, D, Mallya, RM   +2 more
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Effect of tetramethylammonium perchlorate on ammonium perchlorate and propellant decomposition

Thermochimica Acta, 1976
Abstract The thermal decomposition of ammonium perchlorate (AP) is considerably modified when it is cocrystallized or mixed with small amounts of tetramethyl- ammonium perchlorate. The decomposition is sensitized when tetramethylphosphonium perchlorate is added to AP.
S.R. Jain, P.R. Nambiar
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IGNITION OF AMMONIUM PERCHLORATE

Chemical Engineering Communications, 1979
A simplified theory for the ignition of ammonium perchlorate is proposed, which is derived from a unified theory that also explains the low-pressure deflagration limit as well as the steady deflagration. The theory provides an approximate method of calculating the ignition delay and the minimum external he»t flux for a successful ignition, as functions
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Ammonium perchlorate and ammonium perchlorate - binder sandwich combustion

2013
Single crystal and pressed polycrystalline ammonium perchlorate (AP) wafers, pressed polycrystalline AP pellets, and ammonium perchlorate-binder (polybutadiene acrylic acid, hydroxyl terminated polybutadiene, polyurethane, and carboxyl terminated polybutadiene) sandwiches were burned in a schlieren equipped combustion bomb and in a centrifuge mounted ...
Murphy, J. L., Netzer, David Willis
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Ammonium Perchlorate, Friend or Foe?

Propellants, Explosives, Pyrotechnics, 2014
AbstractIn part 1 of this paper, it was demonstrated that a nitroglycerine and polyethylene glycol based propellant containing ammonium perchlorate degraded at a slower rate at temperatures of 80 °C or less compared with the other two energetic materials studied which did not have this oxidizer present.
Ruth Tunnell, Mark Ashcroft, Roz Dale, Dave Tod, William G. Proud   +4 more
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Electrical conduction in ammonium perchlorate

Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases, 1972
D.c. along with a few a.c. electrical measurements are reported for ammonium perchlorate (AP) in compressed disc and single crystal form. The near-identity of the electrical conductivity of AP to that of certain other alkali perchlorates (also measured) makes conduction by protons according to schemes previously suggested unlikely though not impossible.
G. P. Owen, J. M. Thomas, J. O. Williams
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Combustion studies on ammonium perchlorate/trimethylammonium perchlorate mixtures

Combustion and Flame, 1982
A study of the burning rates of compressed mixtures of ammonium perchlorate (AP) and trimethylammonium perchlorate (TMAP) has been carried out at ambient pressure. The overall increase in the linear burning rate, showing a maximum at a composition having 80% TMAP, has been discussed in terms of factors such as stoichiometry, presence of faster burning ...
Jain, SR, Adiga, KC, Verneker, Pai VR
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Kinetics of ammonium perchlorate decomposition

Reaction Kinetics and Catalysis Letters, 1976
The kinetic law of ammonium perchlorate decomposition in the presence and absence of metal oxides has been studied. Sublimation has also been considered from the kinetic point of view.
SANTACESARIA, ELIO, S. Carrà
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Comparative DFT Study of Crystalline Ammonium Perchlorate and Ammonium Dinitramide

The Journal of Physical Chemistry A, 2008
The electronic structure, vibrational properties, absorption spectra, and thermodynamic properties of crystalline ammonium perchlorate (AP) and ammonium dinitramide (ADN) have been comparatively studied using density functional theory in the local density approximation.
Weihua, Zhu, Tao, Wei, Wei, Zhu, Heming, Xiao   +3 more
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