Study of Erosion Behavior of Al2O3-TiC-Co and Al2O3-TiC Ceramics

Abstract

Abstract: By a newly developed powder process, a layer of metal cobalt film was coated on the surface of fine ceramic powder of Al_2O_3 and TiC. The mixture of the two
kinds of Co-coated powder (about 70wt%Al₂O₃-Co+30wt%TiC-Co) was hot-pressed into advanced Al₂O₃-TiC-Co(ATC) ceramic. Scanning electron
microcopy (SEM) observation was employed to investigate its erosion behavior. Comparing with AT30 (70wt%Al₂O₃+30wt%TiC) ceramic, its high fracture
toughness and fracture strength with relative fine microstructure make it more resistant than At30 ceramic against particle erosion under different impact velocity and impact
angles. The SEM shows that the worn surface exhibits shallow detaching, microcrack and plastic deformation. Its proper wear resistance not only depends on its
mechanical properties, but also its microstructure.

Key words: ATC ceramic, AT30 ceramic, erosion, mechanical properties, microstructure

MAO Dongsheng,LI jian,GUO Shaoyi,MAO Zhiyuan. Study of Erosion Behavior of Al₂O₃-TiC-Co and Al₂O₃-TiC Ceramics[J]. Journal of Inorganic Materials.

References

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Study of Erosion Behavior of Al₂O₃-TiC-Co and Al₂O₃-TiC Ceramics

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