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- W2362999892 abstract "Si3N4 and Si3N4+Ti(C N) ceramic materials for hot extrusion die were prepared by hot pressing sintering method.The mechanical properties,microstructure,thermal shock resistance and wear resistance properties of the two ceramics were investigated by SEM,TEM,quenching-strength method and other methods.The results show that Si3N4 ceramic material possess better mechanical properties and thermal shock resistance than the Si3N4+Ti(C N) material.The maximal bending strength and fracture toughness of Si3N4 reached 1 130 MPa and 12 MPa·m1/2,respectively.The critical temperature difference of thermal shock resistance of Si3N4 was 750 K.The main wear mechanisms were abrasive wear and adhesive wear.The friction coefficient of the Si3N4 ceramic material changes in the range of 0.39 to 0.67.The friction coefficient of the Si3N4+Ti(C N) ceramic material changes in the range of 0.61 to 0.81,which can reach 0.81 under the condition of 100 N and 60 min.The wear rates of the two ceramic materials are at the same order of magnitude of 10-10 mm3/(N·m).The wear rate of Si3N4+Ti(C N) is smaller than that of Si3N4 under the same conditions." @default.
- W2362999892 created "2016-06-24" @default.
- W2362999892 creator A5018371876 @default.
- W2362999892 date "2012-01-01" @default.
- W2362999892 modified "2023-09-23" @default.
- W2362999892 title "Property of Si_3N_4-based Ceramic Mould" @default.
- W2362999892 hasPublicationYear "2012" @default.
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