Core-shell structure-enhanced TiB -TiC-based cermet and preparation method thereof

The invention provides a core-shell structure-enhanced TiB -TiC-based cermet. The cermet comprises the following components of, in percentage by mass, 25%-50% of TiB , 26%-41% of TiC, 4%-14% of WC, 9%-11% of Co, and 9%-11% of Ni, wherein WC:TiC=0.15-0.45. A TiB -TiC-based cermet composite material w...

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Bibliographic Details
Main Authors ZHOU HAOJUN, HUANG MINGCHU, LIU LANGFEI, SUN XIAOPING, WU NING, LUO FENGHUA
Format Patent
LanguageChinese
English
Published 04.08.2020
Subjects
ALLOYS
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Summary:The invention provides a core-shell structure-enhanced TiB -TiC-based cermet. The cermet comprises the following components of, in percentage by mass, 25%-50% of TiB , 26%-41% of TiC, 4%-14% of WC, 9%-11% of Co, and 9%-11% of Ni, wherein WC:TiC=0.15-0.45. A TiB -TiC-based cermet composite material with the typical core-shell structure is obtained through the following steps that firstly, mixed powder is prepared, then hydrogen is used for reduction, and then compression molding is carried out, and finally sintering is carried out, wherein the volume density is 5.21-5.75 g/cm , the flexural strength is 1042-1421 MPa, the fracture toughness is 16.34-20.12 MPa.m<1/2>, and the hardness is 14.68-17.32 GPa. The method has the advantages of the simple technological process, easy control over production conditions, suitability for large-scale production, and wide application prospect in the fields of precisely-machined tools, wear-resistant materials, high-temperature oxidation-resistant materials and the like. 一种核-壳
Bibliography:Application Number: CN202010416239