Ba₂SmTaO₆ laser protection coatings of ≈200 ​μm thickness were deposited onto stainless steel surfaces by air plasma spraying, and the laser irradiation resistance of the coatings was investigated. For laser irradiation with a laser power density less than 1000 ​W/cm², the coatings kept intact. For a laser power density exceeding 1500 ​W/cm², the Ba₂SmTaO₆ coatings underwent recrystallization, grain growth occurred, and certain spray morphology features disappeared by melting. In the case of a laser power density of 2000 ​W/cm² applied for 10s, the incident laser parameter was beyond the coatings protection threshold, and the coating peeled off. The samples back surface temperature kept unchanged within the first 1s of laser irradiation, indicating that Ba₂SmTaO₆ coatings have excellent laser protection capability and can limit the rise of the substrate temperature. However, the low thermal conductivity of Ba₂SmTaO₆ leads to a detrimental laser energy concentration at the beginning of the laser irradiation period on the sample front surface, resulting in a rapid increase of the surface temperature up to the melting point.

通过空气等离子喷涂在不锈钢表面沉积约200μm厚的Ba ₂ SmTaO ₆激光保护涂层，并研究了涂层的抗激光辐照性能。对于激光功率密度小于 1000 W/cm ^{2 的}激光照射，涂层保持完整。对于超过1500 W/cm ²的激光功率密度，Ba ₂ SmTaO ₆涂层发生再结晶，发生晶粒长大，并且某些喷涂形态特征因熔化而消失。在激光功率密度为 2000 W/cm ^{2 的情况下}施加10s，入射激光参数超出涂层保护阈值，涂层脱落。样品背面温度在激光照射的前1s内保持不变，表明Ba ₂ SmTaO ₆涂层具有优异的激光防护能力，可以限制基板温度的上升。然而，Ba ₂ SmTaO _{6 的}低热导率导致在激光照射期开始时样品前表面上有害的激光能量集中，导致表面温度快速升高直至熔点。