Preparation method of nano-scale TiB2/Fe/Ni/Ti composite ceramic

The invention relates to a preparation method of a nano-scale TiB2/Fe/Ni/Ti composite ceramic, and belongs to the technical field of cermet materials. In order to solve preparation problems of relatively high production cost, poor sintering property and the like of a TiB2 ceramic material, and a problem of normal temperature brittleness being not suitable for practical application, the invention adopts an endothermic reaction to adjust intense exothermic magnesiothermic self-propagating reaction to adjust and prepare a nano-TiB2 powder material, uses Fe, Ni and Ti as metal sintering aids, andadopts a hot pressed sintering method to prepare cermet so that the finally obtained TiB2/Fe/Ni/Ti composite ceramic material has a flexural strength of 710 MPa and a hardness of 92.6. The invention provides a preparation process of firstly synthesizing the nano TiB2 powder and then mixing with a low-temperature mechanical ball-milling method to solve problems of low purity, large particle size, high cost and the like of