Hydroturbine blades experience erosive wear during operations due to the presence of silt particles. The hydroturbine blades are fabricated from 16Cr5Ni martensitic stainless steels (16/5MSS). In order to mitigate the erosive wear of blades, heat-treated 16/5MSS (16/5HTT) were liquid nitrided at low temperature of 450 °C (16/5M450) and 500 °C (16/5M500) for 10 h in separate batch process. The cumulative weight loss after slurry erosion test of 16/5M450 is found to be 73% less than that of 16/5HTT, whereas the cumulative weight loss of 16/5M500 is found to be 6.7% more than that of 16/5HTT. The enhanced resistance to slurry erosion of 16/5M450 is attributed to high hardness of expanded martensite (α_N-Fe) in the nitrided layer. α_N-Fe is formed by diffusion of N in the nitrided 16/5HTT. When nitriding is done at 500 °C, then there is a reduction in resistance to the slurry erosion resistance which is caused by the CrN phase.

由于存在淤泥颗粒，水轮机叶片在操作过程中会遭受侵蚀磨损。水轮机叶片由16Cr5Ni马氏体不锈钢（16 / 5MSS）制成。为了减轻叶片的腐蚀磨损，将热处理过的16 / 5MSS（16 / 5HTT）在450°C（16 / 5M450）和500°C（16 / 5M500）的低温下分别进行液态氮化10小时批处理过程。发现泥浆侵蚀试验后的累积失重16 / 5M450比16 / 5HTT少73％，而16 / 5M500累积失重比16 / 5HTT高6.7％。到的16 / 5M450浆料侵蚀增强抵抗归因于扩张马氏体的硬度高（α _Ñ -Fe）在氮化层。α _ñ通过在氮化的16 / 5HTT中扩散N形成-Fe。当在500°C下进行氮化时，由CrN相引起的耐浆料侵蚀性会降低。