Low-thermal-resistance radiation-resistant nano multilayer film material and preparation method thereof

Abstract

The invention discloses a low-thermal-resistance radiation-resistant nano multilayer film material. The material has a multilayer composite structure formed by cross stacking of metal tungsten nano films and single-layer graphene. A preparation method of the material comprises the following steps: depositing a metal tungsten nano film on a silicon dioxide substrate; transferring single-layer graphene onto the surface of the metal tungsten nano film; and alternately depositing a metal tungsten nano film and transferring single-layer graphene to obtain the low-thermal-resistance radiation-resistant nano multilayer film material. Aiming at the problem that the present bimetal multilayer film structure can greatly lower the thermal property of the material, the material provided by the invention integrates excellent heat-conducting property and radiation resistance and has the multilayer composite structure formed by cross stacking of metal tungsten nano films and single-layer graphene, so that the thermal conductivity lowering caused by the presence of a multilayer film structural interface can be reduced, and the excellent radiation resistance of the material can be kept.

Description

technical field [0001] The invention belongs to the field of nanometer materials, and relates to a nanometer multilayer film material with low thermal resistance and radiation resistance and a preparation method thereof. Background technique [0002] Energy is the basis for the survival and development of human beings, and it constantly promotes the continuous progress of human society. After entering the 21st century, with the rapid development of modern society, the demand and consumption of energy have increased significantly, and the constraints of energy and the environment on social development have become increasingly prominent. As a new type of clean energy, nuclear power generation has significant advantages such as low resource consumption, low environmental impact, and strong supply capacity. It has attracted more and more attention from the international community. Nuclear power has become an important choice for many countries' energy strategies. One of the eff...

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Problems solved by technology

[0003] In recent years, bimetallic nano-multilayer film materials containing a large number of interfaces and grain boundaries, which can greatly reduce the damage caused by radiation, have been widely studied and recognized, but the design of this multilayer film has led to a cliff in the thermal properties of the material. Therefore, in the face of high-temperature, high-irradiation nuclear reaction environment, it is imperative to develop a material with good thermal conductivity and radiation resistance.

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