Diamond-like in-situ self-reaction graphitized lubricating coating cutter and preparation method thereof

Abstract

The invention belongs to the technical field of metal cutting tool manufacturing, and relates to a diamond-like in-situ self-reaction graphitized lubricating coating cutter and a preparation method thereof. The base body surface of the cutter is provided with a diamond-like coating thin film, and the outer layer of the diamond-like thin film contains transition metal element components doped withiron, cobalt and the like. The diamond-like thin film of the cutter is prepared by using a reactive magnetron sputtering method, wherein the coating principal process is divided into two steps that adiamond-like inner layer is prepared through non-doping reaction magnetron sputtering, and a diamond-like outer layer is prepared through transition metal element doped reaction magnetron sputtering.The outer layer of the thin film of the diamond-like coating cutter contains a small amount of transition metal element impurities, and under the action of cutting high temperature, the transition metal elements can induce sigma bonds to be switched to pi bonds between carbon atoms in diamond-like coating, so that part of the diamond-like coating of the cutting friction interface is promoted to undergo the in-situ reaction to be converted into graphite, and then the metal cutting process is effectively lubricated.

Description

technical field [0001] The invention relates to a diamond-like in-situ self-reaction graphitization lubricating coating tool and a preparation method thereof, belonging to the technical field of metal cutting tool manufacturing. Background technique [0002] The machinery manufacturing industry provides technical equipment for the entire national economy, and is the material basis for national economic and social development and national defense construction. Its development level is an important symbol of the country's comprehensive strength. Cutting technology is the most widely used basic technology in the machinery manufacturing industry, and the advancement of cutting tool technology is the key to the rapid development of cutting technology. In recent years, with the development of composite and lightweight workpiece materials, difficult-to-process materials such as ceramic matrix composites, graphite composites, carbon fiber composites, and superalloys have developed r...

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Problems solved by technology

The diamond coating itself has a certain lubricating performance, but its lubricating effect is still somewhat inferior to that of self-lubricating coating tools under dry cutting conditions. The realization of the texture lubrication method on the surface of the diamond coating is also important for the texture preparation process. a great challenge

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