SINTERED BODY AND CUTTING TOOL

摘要

This sintered body includes a first material which is a cubic boron nitride, a second material which is an oxide of zirconium, and a third material which is an oxide of aluminum. The second material includes a cubic ZrO2 and ZrO, and the third material includes an α-type Al2O3. The sintered body satisfies 0.9≤Izro2(111)/Ial(110)≤30 and 0.3≤Izro(111)/Ial(110)≤3, where the X-ray diffraction intensities of the α-type Al2O3 (110) plane, the cubic ZrO2 (111) plane, and the ZrO (111) plane are respectively represented as Ial(110), Izro2(111), and Izro(111).