The phenomenon of hydrogen embrittlement phenomenon is known to be a major obstacle to proposed to overcome this phenomenon. In the present study, polytetrafluoroethylene (PTFE), which is known to be an effective hydrogen adsorption and desorption material, was coated on the surface of stainless steel 304 to improve its hydrogen embrittlement resistance. To make a hydrogen embrittlement environment, electrochemical hydrogen pre-charging was applied to the PTFE-coated stainless steel 304. To investigate the effects of PTFE coating on the hydrogen embrittlement resistance of stainless steel 304, the Charpy V-notch impact (CVN) test was performed under three different temperatures: 25, −83, and −196 °C. Additionally, hydrogen concentration, electron back scatter diffraction (EBSD), and scanning electron microscopy (SEM) evaluations were carried out to verify the results of the CVN impact test. The PTFE coating did not have a significant effect on the quantitative reduction of hydrogen concentration; however, we confirmed its excellent performance in terms of toughness reduction due to the increase in hydrogen loading time at room temperature.

已知氢脆现象是克服该现象的主要障碍。在本研究中，已知是有效的氢吸附和解吸材料的聚四氟乙烯（PTFE）涂覆在不锈钢304的表面上，以提高其抗氢脆性。为了形成氢脆环境，将电化学氢预充电应用于PTFE涂层不锈钢304。为研究PTFE涂层对304不锈钢耐氢脆性的影响，夏比V型缺口冲击（CVN）测试在以下三种不同温度下进行：25，-83和-196°C。此外，氢浓度，电子背散射衍射（EBSD），并进行了扫描电子显微镜（SEM）评估，以验证CVN冲击试验的结果。PTFE涂层对氢浓度的定量降低没有显着影响。但是，由于室温下氢加载时间的增加，我们确认了其在韧性降低方面的出色性能。