Graphite surface titanium metallization method and product manufactured with the same

Abstract

The invention discloses a graphite surface titanium metallization method and a product manufactured with the same to solve the problem that when graphite is connected with Cu or Cu alloy, it is difficult to wet graphite with liquid metal, the difference between graphite and Cu or Cu alloy is large in terms of expansion factor and elasticity modulus, and connection is hard. According to the method, a titanium film is deposited on the surface of a graphite substrate with the magnetron sputtering method, and then hot isostatic pressing is conducted on the deposited titanium film, so that a titanium thin film is formed on the surface of the graphite substrate. The problem that coating-substrate combination strength of a surface titanium metallization layer is low during diffusion bonding of the non-metal material graphite can be effectively solved, and the metal titanium thin film high in coating-substrate combination strength can be prepared on the graphite substrate. According to the titanium thin film, the concentration of titanium becomes larger gradually from the graphite substrate to the outside in a gradient mode, and the strength of combination between a titanium coating and the substrate is high. The method can meet the requirement for research of fusion reactor plasma facing materials and has great significance for development of fusion reactor elements.

Description

technical field

[0001] The invention relates to the field of materials, in particular to the technical field of material surface coatings, in particular to a titanium metallization method on the surface of graphite and a product prepared therefrom. The invention can prepare a titanium film with high film-base bonding strength on the graphite substrate, and has good application prospect. Background technique

[0002] Graphite has the advantages of high melting point (3400°C), low density and excellent thermal shock resistance, so it is widely used in energy, aerospace, electronics and other fields. Especially under high temperature conditions, such as plasma-facing components in thermonuclear fusion devices, graphite has better applications. The thermal conductivity of graphite is low (generally around 100W / m·K). When it is used as the bombardment surface of high-temperature heat flow plasma facing the plasma element, in the thermonuclear fusion device, the temperature of th...