(TiZrNbTaW) C high-entropy carbide ceramic with fine grain structure as well as preparation method and application of (TiZrNbTaW) C high-entropy carbide ceramic

By introducing W into high-entropy carbide ceramics and using carbon-depleted treatment to form a fine-grained structure, the problems of rapid grain growth and low toughness were solved, achieving high hardness and high toughness of high-entropy carbide ceramics and broadening their application range.

CN122079635APending Publication Date: 2026-05-26SHANDONG UNIV
0 Cites 0 Cited by

Patent Information

Application Number
CN202610258439.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-04
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing high-entropy carbide ceramic materials suffer from rapid grain growth and low toughness, resulting in high brittleness and making them difficult to widely apply in fields such as national defense, military industry, and aerospace.

Method used

By introducing W into high-entropy carbide ceramics, carbon-depleted treatment leads to the dispersed precipitation of W metal, which inhibits grain growth, forms a fine-grained structure, and improves fracture toughness.

Benefits of technology

This technology achieves a reduction of grain size by an order of magnitude in high-entropy carbide ceramics, resulting in improved fracture toughness, significantly enhanced hardness and toughness, making them suitable for applications in defense, military, aerospace and other fields.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention discloses (TiZrNbTaW) C high-entropy carbide ceramic with a fine grain structure as well as a preparation method and application of the (TiZrNbTaW) C high-entropy carbide ceramic, and belongs to the technical field of high-entropy ceramics. The material ratio is calculated according to a carbon thermal reduction equation, and the raw materials of the high-entropy carbide ceramic comprise oxides weighed according to a stoichiometric ratio and 0.6-0.7 corresponding mass of carbon powder. Therefore, the invention provides the (TiZrNbTaW) C high-entropy carbide ceramic with fine grains, high hardness and high toughness, the hardness (HV0.5) of the (TiZrNbTaW) C high-entropy carbide ceramic is 15-25, preferably 18-22, the fracture toughness of the (TiZrNbTaW) C high-entropy carbide ceramic is 2-5 MPa.m < 1 / 2 >, and the relative density of the (TiZrNbTaW) C high-entropy carbide ceramic is greater than or equal to 98%.
Need to check novelty before this filing date? Find Prior Art