Effect of B4C on bending strength of ZTA ceramic reinforced high chromium cast iron matrix composites. Issue 8 (3rd August 2022)

• Record Type: Journal Article
• Authors: Gao, Quan; Lu, Zhenlin; Jia, Lei; Wang, Yue
• Is Part Of: Composite interfaces. Volume 29:Issue 8(2022)
• Page Start: 971
• Page End: 983
• Publication Date: 2022-08-03
• Subjects: ZTA/HCCI composite -- interface bonding -- pressure-free infiltration -- bending strength; Composite materials -- Periodicals; 620.11805
• DOI: 10.1080/09276440.2022.2025688
• Languages: English
• ISSNs: 0927-6440

Abstract

ABSTRACT: Zirconium dioxide-toughened aluminum oxide (ZTA) ceramic-reinforced high chromium cast iron (HCCI) matrix composites were prepared by vacuum pressure-free infiltration, and the effects of active additive boron carbide (B4 C) (10%, 12%) on the interface binding ability was studied systematically. Results showed the wettability between HCCI and ZTA could be improved after the addition of B4 C, which could result in a metallurgical combination by forming a transition layer. When the content of B4 C additive was 10%, the Brinell hardness of ZTA/HCCI composites reached 645 N/mm 2 in the as-infiltration state, and the bending strength was more than twice of HCCI. After heat treatment, the hardness and bending strength increased significantly, which reached 676.1 N/mm 2 and more than three times of HCCI, respectively. Graphical Abstract: uf0001