Manufacturing of Al2O3/Ni/Ti Composites Enhanced by Intermetallic Phases.

Marcin Wachowski,Katarzyna Konopka,Justyna Zygmuntowicz,Robert Kosturek,Waldemar Kaszuwara

doi:10.3390/ma14133510

Abstract

In this study, ceramic–metal composites in the Al2O3/Ti/Ni system were fabricated using the slip casting method. Two series of composites with 15 vol.% metal content and different solid phase contents were obtained and examined. A proper fabrication process allows obtaining composites enhanced by intermetallic phases. The microstructure of the base powders, slurries, and sintered composites was analyzed by scanning electron microscope. Analysis of the sedimentation tendency of slurries was carried out. The phase composition of the sintered samples was examined by X-ray diffraction analysis. A monotonic compression test was used to investigate the mechanical properties of the composites. A fractography investigation was also carried out. The research conducted revealed that the slip casting method allows the obtaining of composites enhanced by intermetallic phases (TiNi, Ni3Ti). The results show the correlation between solid-phase content, microstructure, and mechanical properties of the composites.

Highlights

One of the fastest growing fields of mechanical and materials engineering is research on the fabrication of innovative ceramic materials
Ceramic–metal composites belong to the group of structural and functional engineering materials
This research aims to examine the possibility of manufacturing by slip casting and to characterize the microstructure and mechanical properties of Al2O3/Ti/Ni composites reinforced with intermetallic phases

Summary

Introduction

One of the fastest growing fields of mechanical and materials engineering is research on the fabrication of innovative ceramic materials Among these materials are ceramic– metal matrix composites. Ceramic–metal composites belong to the group of structural and functional engineering materials. Manufacturing such a material makes it possible to produce composites with different physical and chemical properties than a singlecomponent material. This is advantageous for materials with applications such as e.g., thermal barriers. Taking the advantage of the properties of the individual materials (e.g., the electric conductivity and ductility of metal and the hardness and heatresistance of ceramics) has made ceramic–metal composites very promising materials for use in biomedical [10], aerospace [11], electrotechnics [12], and other engineering applications [13,14]

Objectives

Methods

Results

Conclusion