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| Abstract No.: |
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Scheduled at:
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Wednesday, May 11, 2016, Room 3E 10:00 AM
Cold Gas Spraying II
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| Title: |
The reactivity enhancement depending on the microstructure evolution in kinetic spraying and arrested reactive milling of Al-Ni particles
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| Authors: |
Seungtae Lee* / Hanyang University, Republic of Korea
Jaeick Kim / Hanyang University, Republic of Korea
Changhee Lee/ Hanyang University, Republic of Korea
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| Abstract: |
The liners used in shaped charges need to possess good penetration ability and explosive power. Existing Cu liner has been generally used due to its high penetration powder but its explosive powder is low. In order to address this problem, reactive Al-Ni composite layer was produced on Cu liner via arrested reactive milling (ARM) and kinetic spray process. The microstructure evolution was investigated by SEM, TEM and exothermic reaction change was checked by DSC to find out the effect of ARM and kinetic spray on the reaction of Al-Ni composite layer in terms of energy. The creation of oxygen free boundaries generated by the kinetic spray process seemed one of the primary causes for the activation of an Al-Ni composite layer. Also, highly increased strain energy resulting from the generation of several kinds of defects at the interface region contributed to the mechanical activation of Al-Ni deposit. Additionally, it was helpful for the reaction between Al and Ni elements that intimate chemical/metallurgical bonding was induced at the interface after a kinetic spraying.
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