Special Issue
  • Study on the Characteristic of Aluminum Matrix Composites Reinforced withHeterogeneous B4C and cBN Particles

  • Donghyun Lee*, Minwoo Kang*, Junghwan Kim*, Sang-Bok Lee*, Sang-Kwan Lee*, Seungchan Cho*†

  • * Composites Research Division, Korea Institute of Materials Science, Changwon, Korea

  • B4C 및 cBN 이종입자 강화 알루미늄 복합재료의 특성에 관한 연구

  • 이동현* · 강민우* · 김정환* · 이상복* · 이상관* · 조승찬*†

  • This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

In this study, an aluminum metal matrix composite (AMC) with uniformly dispersed B4C (boron carbide) and cBN (cubic boron nitride) particles was fabricated using a stir casting process followed by hot rolling. The microstructure, thermal conductivity, relative density, and thermal neutron absorption characteristics of the composite were analyzed. The volume fraction measured through image analysis was nearly identical to the target volume fraction of the reinforcement, confirming an even distribution of the reinforcing particles. The thermal conductivity and thermal neutron absorption capacity of the AMC reinforced with B4C and cBN particles were 152 W/mK and 93.8%(@1.58 mm), respectively.


본 연구에서는 교반주조 공정과 열간압연 공정을 이용하여 B4C 및 cBN 입자가 균일하게 분산된 알루미늄 금속복합소재를 제조하고, 미세조직 및 열전도도, 상대밀도, 열중성자 흡수능 특성에 대해 분석하였다. 이미지 분석 프로그램을 이용하여 체적률과 분산도를 측정한 결과, 목표했던 강화재의 체적률과 거의 유사하였으며 강화재도 균일하게 분산되어 있는 것을 확인하였다. B4C 및 cBN 입자 강화 알루미늄 복합소재의 열전도도는 152 W/mK, 열중성자 흡수능은 93.8%(@1.58 mm)로 확인되었다．


Keywords: 금속복합재료(Metal matrix composite), 알루미늄(Aluminum), 탄화 붕소(B4C), 질화 붕소(BN), 교반 주조 (Stir casting)

This Article

Correspondence to

  • Seungchan Cho

  • * Composites Research Division, Korea Institute of Materials Science, Changwon, Korea

  • E-mail: sccho@kims.re.kr