Mechanical synthesis and rapid consolidation of a nanocrystalline Cu-Al2O3 composite by high frequency induction heated sintering

• Published in: Electronic materials letters Vol. 5; no. 2; pp. 77 - 81
• Main Authors: Shon, In-Jin, Lee, Jin-Yeoung, Nam, Kee-Seok, Moon, Byung-Moon, Lee, Dong-Mok
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 01.06.2009; 대한금속·재료학회
• Subjects: Characterization and Evaluation of Materials; Chemistry and Materials Science; Condensed Matter Physics; Materials Science; Nanotechnology; Nanotechnology and Microengineering; Optical and Electronic Materials; 전자/정보통신공학; high frequency induction heated sintering; Cu-Al; nanomaterial; composite; mechanical properties; O
• ISSN: 1738-8090; 2093-6788
• DOI: 10.3365/eml.2009.06.077

Cu and Al 2 O 3 nanopowders were synthesized from 3CuO and 2Al by high energy ball milling. The powder sizes of Cu and Al 2 O 3 were 14 nm and 133 nm, respectively. A dense nanocrystalline 3Cu-Al 2 O 3 composite was consolidated by a high frequency induction heated sintering method within 2 minutes from the mechanically synthesized powders. The average hardness and fracture toughness values of the nanostuctured 3Cu-Al 2 O 3 composite were 520 kg/mm 2 and 5 Mpa·m 1/2 , respectively.