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CERAMIC SINTERED BODY, INSERT, CUTTING TOOL, AND FRICTION STIR WELDING TOOL
Provided is a ceramic sintered body having high wear resistance and chipping resistance. Also provided are an insert, a cutting tool and a friction stir welding tool, each of which uses such a high-performance ceramic sintered body. The ceramic sintered body includes Al2O3(alumina), WC (tungsten carbide) and ZrO2(zirconia), wherein Zr (zirconium) element is present at either one or both of: (1) a grain boundary between crystal grains of the Al2O3; and (2) a grain boundary of crystal grains of the Al2O and crystal grains of the WC, wherein the ceramic sintered body contains 55.0 to 97.5 vol% of the WC, 0.1 to 18.0 vol% of the ZrO2, and the balance being the Al2O3, and wherein the ZrO2is in a phase of tetragonal structure (T) or a mixed phase of tetragonal structure (T) and monoclinic structure (M).
CERAMIC SINTERED BODY, INSERT, CUTTING TOOL, AND FRICTION STIR WELDING TOOL
Provided is a ceramic sintered body having high wear resistance and chipping resistance. Also provided are an insert, a cutting tool and a friction stir welding tool, each of which uses such a high-performance ceramic sintered body. The ceramic sintered body includes Al2O3(alumina), WC (tungsten carbide) and ZrO2(zirconia), wherein Zr (zirconium) element is present at either one or both of: (1) a grain boundary between crystal grains of the Al2O3; and (2) a grain boundary of crystal grains of the Al2O and crystal grains of the WC, wherein the ceramic sintered body contains 55.0 to 97.5 vol% of the WC, 0.1 to 18.0 vol% of the ZrO2, and the balance being the Al2O3, and wherein the ZrO2is in a phase of tetragonal structure (T) or a mixed phase of tetragonal structure (T) and monoclinic structure (M).
CERAMIC SINTERED BODY, INSERT, CUTTING TOOL, AND FRICTION STIR WELDING TOOL
KERAMISCHER SINTERKÖRPER, EINSATZ, SCHNEIDWERKZEUG UND REIBRÜHRSCHWEISSWERKZEUG
CORPS FRITTÉ EN CÉRAMIQUE, INSERT, OUTIL DE COUPE ET OUTIL DE SOUDAGE PAR FRICTION-MALAXAGE
KOJIMA YOSHITO (author) / YONEKURA HIROSHI (author) / KATSU YUSUKE (author) / MITSUOKA TAKESHI (author)
2021-06-16
Patent
Electronic Resource
English
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