Results 171 to 180 of about 21,310 (208)

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
openaire   +2 more sources

Dislocations in ammonium perchlorate

Journal of the Chemical Society A: Inorganic, Physical, Theoretical, 1971
The formation of etch pits on the cleavage surfaces of ammonium perchlorate single crystals has been studied by optical and electron microscopy. Ethyl and butyl alcohols and their mixtures were the most satisfactory etchants. Well defined etch pits could not be detected on the c face which dissolves very rapidly, going through three separate stages ...
P. J. Herley, P. W. M. Jacobs, P. W. Levy   +2 more
openaire   +1 more source

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
openaire   +1 more source

Combustion of ammonium perchlorate

Symposium (International) on Combustion, 1967
Deflagration of ammonium perchlorate studied using cleaved sections of large single crystals grown from water solution, discussing burning rate and combustion ...
J.D. Hightower, E.W. Price
openaire   +1 more source

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
openaire   +2 more sources

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
openaire   +1 more source

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
openaire   +1 more source

Thermal decomposition of ammonium perchlorate

Transactions of the Faraday Society, 1967
The thermal decomposition of ammonium perchlorate has been studied by measuring either the loss in weight, or the pressure increase in a closed system, as functions of time. Analysis of the former measurements is complicated by concurrent sublimation of the salt.
J. V. Davies, P. W. M. Jacobs, A. Russell-Jones   +2 more
openaire   +1 more source

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
openaire   +1 more source

Electrical Conductivity of Ammonium Perchlorate

Nature, 1963
Zirkind and Freeman1 have pointed out the increase in the electrical conductivity of ammonium perchlorate crystals on irradiation with 0.637-MeV caesium-137 γ-rays. In this communication, results are reported from an investigation of the electrical conductivity of ammonium perchlorate solid as a function of temperature and gaseous atmosphere.
PHILIP ZIRKIND, ELI S. FREEMAN
openaire   +1 more source