Ignition and combustion mechanism in aluminum particles

1977 ◽  
Vol 12 (2) ◽  
pp. 177-182 ◽  
Author(s):  
A. A. Razdobreev ◽  
A. I. Skorik ◽  
Yu. V. Frolov
Keyword(s):  
Combustion Mechanism ◽  
Aluminum Particles ◽  
Ignition And Combustion

scholarly journals Laser-Induced Ignition and Combustion of Individual Aluminum Particles Below 10 μm by Microscopic High-Speed Cinematography

Processes ◽  
2020 ◽  
Vol 8 (3) ◽  
pp. 280 ◽  
Author(s):  
Fengting Hou ◽  
Shengji Li ◽  
Yue Wang ◽  
Xuefeng Huang
Keyword(s):  
Direct Observation ◽  
High Speed ◽  
Combustion Mechanism ◽  
Aluminum Particles ◽  
Experimental Apparatus ◽  
High Speed Cinematography ◽  
Metal Aluminum ◽  
Induced Ignition ◽  
Combustion Behaviors ◽  
Ignition And Combustion

Metal aluminum has been widely used as an ingredient in propellant, gunpowder and thermite, but there is less understanding of the combustion mechanism of aluminum particles from submicron to several microns in diameter. This paper proposes to experimentally investigate the ignition and combustion characteristics of individual aluminum particles below 10 μm. A specific in situ diagnostic experimental apparatus was first designed for directly observing the ignition and combustion behaviors of individual aluminum particles, with a submicrometer spatial resolution and a temporal resolution of tens of microseconds. Direct observation through microscopic high-speed cinematography demonstrated that, when heated by a continuous laser, individual aluminum particles thermally expanded, followed by shell rupture; the molten aluminum core overflowed and evaporated, leading to ignition and combustion. Further results showed that, when the laser power densities were gradually increased (5.88, 7.56 and 8.81 × 105 W/cm2), the durations of thermal expansion, melting and evaporation were shortened. The required time for the aluminum particles to expand to 150% of their initial diameter was shortened (34 s, 0.34 s and 0.0125 s, respectively). This study will be beneficial to further extend the investigation of other individual metal particles and reveal their combustion mechanism by direct observation.

scholarly journals Ignition and combustion mechanism in a prechamber combustor (Quantitative classification of combustion patterns)

1986 ◽  
Vol 52 (482) ◽  
pp. 3609-3615
Author(s):  
Norio OHIWA ◽  
Shigeki YAMAGUCHI ◽  
Tatsuya HASEGAWA ◽  
Motokazu OGISO
Keyword(s):  
Combustion Mechanism ◽  
Quantitative Classification ◽  
Ignition And Combustion

Improvement of ignition and combustion performance of micro-aluminum particles by double-shell nickel-phosphorus alloy coating

2021 ◽  
pp. 133585
Author(s):  
Chao Wang ◽  
Xiangrui Zou ◽  
Shipan Yin ◽  
Junlong Wang ◽  
Hongyang Li ◽  
...  
Keyword(s):  
Alloy Coating ◽  
Aluminum Particles ◽  
Combustion Performance ◽  
Ignition And Combustion ◽  
Phosphorus Alloy

scholarly journals Impact ignition and combustion of micron-scale aluminum particles pre-stressed with different quenching rates

2018 ◽  
Vol 124 (11) ◽  
pp. 115903 ◽  
Author(s):  
Kevin J. Hill ◽  
Nobumichi Tamura ◽  
Valery I. Levitas ◽  
Michelle L. Pantoya
Keyword(s):  
Aluminum Particles ◽  
Ignition And Combustion

Ignition and combustion of aluminum particles in shocked H2O/O2/Ar and CO2/O2/Ar mixtures

2000 ◽  
Author(s):  
James Servaites ◽  
R. Burton ◽  
J. Melcher ◽  
Herman Krier
Keyword(s):  
Aluminum Particles ◽  
Ignition And Combustion

Ignition and combustion of aluminum particles in shocked H2O/O2/Ar and CO2/O2/Ar mixtures

2001 ◽  
Vol 125 (1-2) ◽  
pp. 1040-1054 ◽  
Author(s):  
James Servaites ◽  
Herman Krier ◽  
J.C Melcher ◽  
R.L Burton
Keyword(s):  
Aluminum Particles ◽  
Ignition And Combustion

Ignition and Combustion of Levitated Magnesium and Aluminum Particles in Carbon Dioxide

2001 ◽  
Vol 165 (1) ◽  
pp. 151-174 ◽  
Author(s):  
B. LEGRAND ◽  
M. MARION ◽  
C. CHAUVEAU ◽  
I. GOKALP ◽  
E. SHAFIROVICH
Keyword(s):  
Carbon Dioxide ◽  
Aluminum Particles ◽  
Ignition And Combustion
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