Strand Burn Rates of Black Powder to One Hundred Atmospheres

1983 ◽  
Author(s):  
Ronald A. Sasse'
Keyword(s):  
Black Powder

Electrolytic synthesis of ZrSi/ZrC nanocomposites from ZrSiO4 and carbon black powder in molten salt

2020 ◽  
Vol 111 (7) ◽  
pp. 581-586
Author(s):  
Li Ming ◽  
Wu Xiufeng
Keyword(s):  
Electron Microscopy ◽  
High Temperature ◽  
Carbon Black ◽  
Molten Salt ◽  
Cell Voltage ◽  
Black Powder ◽  
X Ray ◽  
Carbon Black Powder ◽  
Transmission Electron ◽  
A Cell

Abstract ZrSi/ZrC nanocomposites have stable high-temperature properties, where conventional materials cannot meet increasingly demanding high-temperature environments. In this paper, the microstructure and electrochemical reduction mechanism of ZrSi/ZrC nanocomposites have been studied. A mixture of ZrSiO4 and carbon black powder was processed using ball grinding, sheet pressing, and sintering, and cylindrically-sintered sheet was prepared as the cathode for the electrolytic work. A high purity graphite rod was utilized as the anode.The microstructure of the electrolytic product was characterized and analyzed using X-ray diffraction, scanning electron microscopy equipped with energy-dispersive X-ray spectroscopy, and transmission electron microscopy. The experimental results showed that the diameter of the as-synthesized ZrSi/ ZrC fibers typically range between 100-400 nm when produced by the electrolysis of sintered pellets in equimolar CaCl2-NaCl molten salt at 850°C with a cell voltage of 2.8 V for 20 h under an argon atmosphere. The nanofibers were formed in core-shell microstructures that overlap and grow.

scholarly journals Improvement of the thermal efficiency of autoclaved aerated concrete by black powder

ScienceAsia ◽  
2021 ◽  
Vol 47S (1) ◽  
pp. 76
Author(s):  
Chanita Mano ◽  
Atthakorn Thongtha ◽  
Somchai Maneewan ◽  
Chantana Punlek
Keyword(s):  
Thermal Efficiency ◽  
Black Powder ◽  
Autoclaved Aerated Concrete ◽  
Aerated Concrete

scholarly journals Measurement of Photon Buildup Factor for Samples of Iraqi Carbon Black Material

2016 ◽  
Vol 8 (2) ◽  
pp. 444-450
Author(s):  
Baghdad Science Journal
Keyword(s):  
Carbon Black ◽  
Experimental Results ◽  
Buildup Factor ◽  
Mixing Ratio ◽  
Black Powder ◽  
Mixing Ratios ◽  
Carbon Black Powder ◽  
Expected Values

The buildup factor was measured after irradiating Iraq carbon black powder using each of and sources respectively, using mixing ratios 40% & 50% for thickness range . The results showed that the buildup factor depends on energy and has limited dependence on the mixing ratio. The QIFT program succeeded accenting for the experimental results even for expected values more than 4 m.f.p outside the thickness range.

scholarly journals The GRINDER CONSTRUCTION DESIGN OF A BALL MILL MACHINE FOR THE PROCESS OF HOMOGENIZING BLACK POWDER USING AN AUTOMATIC SYSTEM

2021 ◽  
Vol 2 (Oktober) ◽  
pp. 22-28
Author(s):  
Arif Setiawan ◽  
Dedy Pradigdo ◽  
Farid Hendro Wibowo
Keyword(s):  
Long Range ◽  
Manufacturing Process ◽  
Ball Mill ◽  
Automatic System ◽  
Quantitative Method ◽  
Rapid Development ◽  
Black Powder ◽  
Construction Design ◽  
Steel Balls ◽  
The Military

Combat technology in the military world has undergone a very rapid development in both close combat and long-range combat. Long-range combat is identical to a rocket weapon where the rocket works because of the presence of an igniter that serves to burn the propellant so that when the propellant burns it will produce pressure that will push the rocket hurtling towards a predetermined target. Igniter is very important in the launch of rockets where the filling of the igniter is black powder that has been difficult to obtain because of the difficult manufacturing process and risk of explosion. This research aims to design a tool that can produce black powder with a large enough capacity and good quality and reduce the risk of explosions to support the manufacture of igniters for rocket launches, especially those owned by Indonesian Army. This research used pure experimental quantitative method with empirical calculations to obtain tools with the desired specifications. The results obtained after the calculation are the volume of octagonal prism tubes 2942.5 cm3, the total volume of steel balls with two size variations is 979.5 cm3, the maximum lendutan that occurs on the shaft of the player is 0.108 mm, so it is said to be safe.

scholarly journals Nanocarbon materials obtained of coniferous trees in the composition of black powder

2012 ◽  
pp. 116
Author(s):  
Zulkhair Mansurov ◽  
Y. Kazakov ◽  
Valeriy Zavadzkiy ◽  
Almagul Kerimkulova ◽  
A. Ashkeeva ◽  
...  
Keyword(s):  
Black Powder ◽  
Coniferous Trees ◽  
Nanocarbon Materials

Hydrogenolysis-free Hydrogenation by Pd Black Powder Catalyst

Synlett ◽  
2001 ◽  
Vol 2001 (10) ◽  
pp. 1590-1592 ◽  
Author(s):  
Shojiro Maki ◽  
Makiko Okawa ◽  
Ryo Matsui ◽  
Takashi Hirano ◽  
Haruki Niwa
Keyword(s):  
Black Powder
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