The development and application of robust tritium permeation barrier coatings is crucial for a safe and economic fusion reactor operation. Three different tungsten and tungsten nitride layers on Eurofer97 substrates were investigated by deuterium permeation measurements and compared. The microstructure and crystal structure was characterized before and after permeation measurements. The layer permeability is independent of the layer thickness and substrate of the sample. For a reliable comparison of different tritium permeation barrier coatings, the layer permeability of each layer was calculated. With this layer permeability, the permeation flux through potential fusion device components can be estimated. As examples, the permeation flux through a 0.5 cm thick steel component can be reduced by two orders of magnitude by a 2 $\mathrm{\mu }$m thick WN layer and nearly four orders of magnitude by a 2 $\mathrm{\mu }$m non-cracked tungsten layer.

坚固的tri渗透阻隔涂层的开发和应用对于安全经济的聚变反应堆运行至关重要。通过氘渗透测量研究并比较了Eurofer97基板上的三种不同的钨和氮化钨层。在渗透测量之前和之后表征微观结构和晶体结构。层渗透率与样品的层厚和基材无关。为了可靠地比较不同的tri渗透阻隔涂层，计算了每一层的层渗透率。利用该层渗透性，可以估计通过潜在的融合装置组件的渗透通量。例如，通过0.5厘米厚的钢部件的渗透通量可以减少2个数量级，减少2个数量级。 $\mathrm{\mu }$m厚的WN层和将近2个数量级的2 $\mathrm{\mu }$米无裂纹的钨层。