MoS2/YSZ (molybdenum disulfide/yttria stabilized zirconia) composite film with high wear resistance and radiation resistance and preparation method of MoS2/YSZ composite film

Abstract

The invention discloses a preparation method of a MoS2 / YSZ (molybdenum disulfide / yttria stabilized zirconia) composite film with high wear resistance and radiation resistance. The preparation method comprises the following steps: firstly, preparing the MoS2 / YSZ composite film by adopting a radio frequency magnetron sputtering physical vapor deposition technology, and then performing thermal annealing treatment on the film to eliminate intrinsic defects of MoS2 crystals in the magnetron sputtering growth process. The obtained film MoS2 shows (002) preferred orientation, good crystallization performance, presents low friction, high wear resistance (average friction coefficient (0.05, wear life) 2*105 turns) and high wear resistance and radiation resistance, and achieves integration of low friction and radiation-resistant self-adaptation of the MoS2 / YSZ based composite film. Therefore, the composite film can be used for lubrication of mechanical moving parts in the irradiation environments of reactors and fusion reactors.

Description

technical field [0001] The invention relates to a molybdenum disulfide / yttrium stabilized zirconia composite film (MoS 2 / YSZ) and its preparation method are mainly used for the lubrication of mechanical moving parts in the irradiation environment of reactors and fusion reactors. Background technique [0002] Energy is the basis for the development of human society, and nuclear energy has become a clean, safe and efficient important resource that can be developed and used on a large scale. China's nuclear power development is divided into three steps: advanced pressurized water reactors, fast reactors / breeder reactors, and fusion reactors. At present, most of the work is mainly focused on the research on the mechanism of radiation damage resistance of reactor nuclear structural materials. So far, the anti-radiation damage dose of the designed reactor nuclear structural materials is close to 200dpa. The engineering design of the fourth-generation reactor and fusion reactor...

AI Technical Summary

Problems solved by technology

But most elements are doped at the expense of MoS 2 Degree of order, increasing MoS 2 At the expense of crystal unsaturation and the introduction of defects such as vacancies

The existence of these defects will greatly reduce the dislocation threshold of S and Mo atoms, and reduce the MoS 2 The intrinsic radiation resistance of the crystal promotes the generation of collision cascades during the irradiation process, causing MoS 2 rapid amorphization, which eventually leads to rapid failure of lubrication

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