In this study, nanocrystalline nickel powders were cold compacted by a dynamic compaction method usinga single-stage gas gun system. A bending test was conducted to measure the bonding strengths of the compacted regionsand microstructures of the specimen were analyzed using a scanning electron microscopy. The specimen was separatedinto two parts by a horizontal crack after compaction. Density test shows that the powder compaction occurred only inthe upper part of the specimen. Brittle fracture was occurred during the bending test of the compact sample. Dispersionof shock energy due to spalling highly affected the bonding status of the nanocrystalline nickel powder.

• 김우열(포항공과대학교 신소재공학과) | Wooyeol Kim
• 안동현(포항공과대학교 신소재공학과) | Dong-Hyun Ahn
• 박이주(국방과학연구소 4기술연구본부 2부) | Lee Ju Park
• 박종일(포항산업과학연구원 ES소재기술센터) | Jong-Il Park
• 김형섭(포항공과대학교 신소재공학과) | Hyoung Seop Kim Corresponding Author