Internal stresses in pre-stressed micron-scale aluminum core-shell particles and their improved reactivity
Journal Article
·
· Journal of Applied Physics
- Mechanical Engineering, Texas Tech University, Lubbock, Texas 79409 (United States)
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
Dilatation of aluminum (Al) core for micron-scale particles covered by alumina (Al{sub 2}O{sub 3}) shell was measured utilizing x-ray diffraction with synchrotron radiation for untreated particles and particles after annealing at 573 K and fast quenching at 0.46 K/s. Such a treatment led to the increase in flame rate for Al + CuO composite by 32% and is consistent with theoretical predictions based on the melt-dispersion mechanism of reaction for Al particles. Experimental results confirmed theoretical estimates and proved that the improvement of Al reactivity is due to internal stresses. This opens new ways of controlling particle reactivity through creating and monitoring internal stresses.
- OSTI ID:
- 22494829
- Journal Information:
- Journal of Applied Physics, Vol. 118, Issue 9; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
Similar Records
Stress relaxation in pre-stressed aluminum core–shell particles: X-ray diffraction study, modeling, and improved reactivity
Impact ignition and combustion of micron-scale aluminum particles pre-stressed with different quenching rates
Single Particle Combustion of Pre-Stressed Aluminum
Journal Article
·
Mon May 30 00:00:00 EDT 2016
· Combustion and Flame
·
OSTI ID:22494829
+1 more
Impact ignition and combustion of micron-scale aluminum particles pre-stressed with different quenching rates
Journal Article
·
Tue Sep 18 00:00:00 EDT 2018
· Journal of Applied Physics
·
OSTI ID:22494829
+1 more
Single Particle Combustion of Pre-Stressed Aluminum
Journal Article
·
Wed May 29 00:00:00 EDT 2019
· Materials
·
OSTI ID:22494829
+1 more