Property Evaluation of Kinetic Sprayed Al-Ni Composite Coatings

Byun, GyeongJun; Kim, JaeIck; Lee, Changhee; Kim, SeeJo; Lee, Seong

doi:2014.32.5.502

J Weld Join > Volume 32(5); 2014 > Article

Research Paper

Journal of Welding and Joining 2014;32(5):502-509.
DOI: https://doi.org/10.5781/JWJ.2014.32.5.72 Published online October 30, 2014.

Property Evaluation of Kinetic Sprayed Al-Ni Composite Coatings

GyeongJun Byun^*, JaeIck Kim^*, Changhee Lee^*, SeeJo Kim^**, Seong Lee^***

Correspondence: Changhee Lee,
Email: chlee@hanyang.ac.kr

Abstract

Shaped charge(SC) ammunition is a weapon that penetrates directly the target by made jet from metal liner on impacting at a target. In SC, the liner occupies significantly important role causing an explosion and penetration of the target. The Al-Ni composite coating was deposited on copper liner in a solid state via kinetic spraying to improve the explosive force. The mechanical properties, reactivity and microstructure were investigated to confirm the possibility of kinetic sprayed Al/Ni composite coating as a reactive liner material. Reactive liner using Al/Ni composite exhibited much enhanced reactivity than pure copper liner due to Self-propagating High-temperature Synthesis (SHS) reaction with significantly improved adhesive bond strength. Especially, among the Al/Ni composite coatings, AN11 (the Al versus Ni atomic percent ratio is 1:1) showed the greatest reactivity due to its widest reaction area between deposited Al and Ni.

Key Words: Al-Ni composites, Kinetic spraying, Thermal reactivity, Self-propagating High-temperature Synthesis (SHS) reaction, Differential Scanning Calorimetry)(DSC)