▎ 摘　　要

NOVELTY - Preparing high-entropy ceramic-based gradient nanocomposite tool material, comprises preparing each layer of powder in each layer of the 5-layer symmetrical gradient layer structure, charging each layer of powder by layered paving method, compressing 5-layer gradient powder into shape, carrying out two-step spark plasma sintering; In the surface layer comprises 96.4-98.7 pts. wt. high-entropy carbide ceramics, 1-3 pts. wt. aluminum dioxide, 0.1-0.2 pts. wt. graphene, 0.2-0.4 pts. wt. carbon nanotubes; In the transition layer comprises 89-93 pts. wt. high-entropy carbide ceramics, 3-5 pts. wt. aluminum dioxide, 3-5 pts. wt. cobalt, 0.8-1.2 pts. wt. compound grain growth inhibitor; in the core layer comprises 89-93 pts. wt. high-entropy carbide ceramics, 6-10 pts. wt. cobalt, and 0.8-1.2 pts. wt. compound grain growth inhibitor ; The compound grain growth inhibitor is Cr3C2 and VC. USE - Preparation method of high-entropy ceramic-based gradient nano-composite cutter material. ADVANTAGE - The method enables to prepare high-entropy ceramic-based gradient nano composite cutter material that has high density and high toughness. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a high-entropy ceramic-based gradient nano composite cutter material.