Method for preparing shell-bionic ceramic tool and shell-bionic ceramic tool

A method for preparing a shell-bionic ceramic tool, the shell-bionic ceramic tool comprises alternating layers of ceramic powder with different components, the method further comprising:

• performing a cold briquetting, during said cold briquetting, carrying out pre-pressing once using a graphite indenter with a spiral linear bulge or multiple concentric circular bulges on a working surface thereof after each layer of the ceramic powder being loaded, and pressing a last layer using a graphite rod, and then pressing a whole ceramic green body with a certain pressure to promote a bonding of the layers of ceramic powder, which in turn gives a complex shape to an interface between the layer;
• wherein, the ceramic powders with different components are as follows:
• the ceramic powder of a matrix layer of the layers comprising a composite powder composed of submicron Al2O3, (W, Ti) C, MgO, and Y2O3, and the ceramic powder of an interlayer of the layers comprising a composite powder composed of submicron Al2O3, TiC, Ni, Mo, MgO, and Y2O3.