Abstract: An ultra-fast sintering method and a sintering system for preparing nano-ceramics by ultrasonic-assisted pressurization and high-frequency induction, it belongs to the technical field of nano-ceramics sintering; this method mainly aims at the problem that nano-ceramics are easy to grow during sintering, and develops an ultrasonic-assisted pressurized coupled high-frequency induction sintering system to prepare nano-ceramic materials; in the process of sintering, ultrasonic wave is used to form high frequency, alternating impact and cavitation on nano-ceramic particles, which can quickly exhaust the gas between particles and inhibit the agglomeration of nano-ceramic particles; on the other hand, the rapid sintering of nano-ceramics is realized by using the principle of high-frequency induction to instantaneously heat the graphite mold and generate a lot of heat.

Abstract: A laminated cermet tool material with self generated micro texture on the surface and a preparation method thereof; first, the tungsten carbide titanium matrix powder is added with molybdenum cobalt nickel rare metal as the bonding phase to form the matrix, then 2.5D braided ceramic fiber preforms are placed on the upper and lower surfaces of the cermet matrix powder, and the laminated cermet tool material with self generated micro texture on the surface is obtained by spark plasma sintering, as the ceramic fiber braid is braided, it has a stable structure, realizing the formation of texture coating on the surface of the tool, and the laminated tool with the cermet as the middle layer.

Abstract: The invention relates to nickel-coated hexagonal boron nitride nanosheet composite powder, its preparation and high-performance composite ceramic cutting tool material. The composite powder has a core-shell structure with BNNS as the core and Ni as the shell. The self-lubricating ceramic cutting tool material is prepared by wet ball milling mixing and vacuum hot-pressing sintering with a phase alumina as the matrix, tungsten-titanium carbide as the reinforcing phase, nickel-coated hexagonal boron nitride nanosheet composite powder as the solid lubricant and magnesium oxide and yttrium oxide as the sintering aids. The invention also provides preparation methods of the nickel-coated hexagonal boron nitride nanosheet composite powder and the self-lubricating ceramic cutting tool material.

Abstract: The invention relates to nickel-coated hexagonal boron nitride nanosheet composite powder, its preparation and high-performance composite ceramic cutting tool material. The composite powder has a core-shell structure with BNNS as the core and Ni as the shell. The self-lubricating ceramic cutting tool material is prepared by wet ball milling mixing and vacuum hot-pressing sintering with a phase alumina as the matrix, tungsten-titanium carbide as the reinforcing phase, nickel-coated hexagonal boron nitride nanosheet composite powder as the solid lubricant and magnesium oxide and yttrium oxide as the sintering aids. The invention also provides preparation methods of the nickel-coated hexagonal boron nitride nanosheet composite powder and the self-lubricating ceramic cutting tool material.