Zirconium oxide and zirconium carbide composite reinforced titanium oxide-based multi-element nano-composite ceramic die

Abstract

The invention discloses a zirconium oxide and zirconium carbide composite reinforced titanium oxide-based multi-element nano-composite ceramic die. The die comprises the following raw materials in parts by weight: 60-80 parts of titanium oxide, 10-20 parts of zirconium carbide, 15-25 parts of zirconium oxide, 2-6 parts of praseodymium oxide, 4-8 parts of dysprosium oxide, 2-4 parts of nickel, 1-3 parts of cobalt and 1-3 parts of magnesium oxide, wherein nanoscale powder of all the raw materials is adopted; the grain size of titanium oxide is 10-100 nanometers; the grain sizes of zirconium carbide and zirconium oxide are 1-10 nanometers; the grain sizes of the other raw materials are 1-100 nanometers. A preparation method is characterized by using titanium oxide as the matrix, adding zirconium carbide and zirconium oxide as reinforcing phases, praseodymium oxide and dysprosium oxide as stabilizing agents and nickel, cobalt and magnesium oxide as sintering aids and carrying out hot pressed sintering on the materials, thus preparing the die. The die has strong ageing and defect resistance, good comprehensive mechanical properties and excellent antifriction and wear resistance properties.

Description

technical field [0001] The invention relates to a ceramic mold material, in particular to a zirconia and zirconium carbide composite reinforced titanium oxide-based multi-element nanocomposite ceramic mold. Background technique [0002] Ceramic cutting tools have high hardness and wear resistance, and exhibit excellent cutting performance in high-speed cutting and dry cutting, and are a class of cutting tool materials with great development prospects. However, most of the currently used ceramic tool materials are limited to micro-composite ceramics, and the mechanical properties of the materials, especially the strength and toughness, still need to be further improved. According to the Hall-petch relationship: the smaller the grain size, the higher the strength of the ceramic material. Therefore, the research and development of nano-modified and nano-micro composite ceramic tool materials will be one of the main directions for the development of tool materials in the future...

AI Technical Summary

Problems solved by technology

[0005] From the existing research, it can be seen that the performance and price advantages of nanocomposites, especially nanocomposite ceramics, have not been fully utilized in the field of molds.