펄스전류인가가 황동-알루미나 나노복합도금층의 경도에 미치는 영향

• Published in: Biuletyn Uniejowski Vol. 35; no. 3; pp. 158 - 164
• Main Authors: 오영주(Y.J. Oh), 안재우(J.W. Ahn), 안종관(J.G. Ahn), 이만승(M.S. Lee)
• Format: Journal Article
• Language: Korean
• Published: 한국표면공학회 2002
• Subjects: 기계공학; hardness; Brass-alumina; Orowan particle strengthening; pulsed current electrodeposition; Hall-Petch relationship
• ISSN: 1225-8024; 2299-8403; 2288-8403

Nanocomposites consisting of a nanocrystalline brass matrix (grain size ; 20-100nm) with sub-micron sized Al2O3 particles (60-200nm) were prepared by pulsed current electrodeposition. The microhardness of the nanocomposite with a grain size of 90-100nm was approximately 1.7 times higher than that of a comparable electrodeposit with no particles. However, significant variations in microhardness were not observed between the nanocomposites with grain sizes of 20 nm and the comparable electrodeposit.