论文信息 - Si3N4–Al2O3–TiC–Y2O3 composites intended for the edges of cutting tools

Si3N4–Al2O3–TiC–Y2O3 composites intended for the edges of cutting tools

Abstract This paper is concerned with the synthesis of composites in the Si 3 N 4 –Al 2 O 3 –TiC–Y 2 O 3 system. The materials obtained have a high density and a good fracture toughness (K IC =9.3 MPa√m). Machining tests show that the service life of the tool blades made of these composites may even be tenfold longer than that of commercial blades made of Si 3 N 4 with an additon of Al 2 O 3 , MgO and Y 2 O 3 .

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