Research on the Helium Permeability of Graphene Oxide Membranes

[摘要] In order to meet the sealing performance requirements, extra-high sensitive mass spectrometer leak detection method is developed. So the leak rate of 10-15Pa•m3/ s on the order of the standard leakage is demanded. Increasing the number of holes in the graphene on the artificial control, the leak rate of grapheme would be improved. Based on this idea, a certain defective graphene as a penetrating element, using in the ultra-sensitive leak detection can be made. In this paper the relationship among the permeability of helium and the pressure difference and the thickness of the GO membrane were studied. The permeation mechanism of GO membrane of the minimal leak rate was discussed, which provides a reference for the study of ultra-sensitive leak detection technology.

[发布机构] Beijing Institute of Spacecraft Environment Engineering, Beijing, China^1

[效力级别] 机械制造 [学科分类] 材料科学（综合）

[关键词] Artificial control;Detection methods;Leak detection technology;Leak rate;Oxide membrane;Pressure differences;Sealing performance;Ultra sensitives