In present investigation, we evaluated the corrosion resistance of the B₄C coating by the potentiodynamic polarization tests. Compared with the 304 L steel substrate, the B₄C coatings deposited by unbalanced magnetron sputtering technology exhibited excellent corrosion resistance. Furthermore, we systematically tested the B₄C coatings rubbing against SiC ball under 85 % RH condition by a ball-on-disk tribometer with various normal loads and sliding speeds. The results showed that disc wear rates were maintained in the order of 10⁻⁷ mm³·N⁻¹ m⁻¹ and a much low friction coefficient (∼0.047) was achieved under 5 N and 0.07 m/s. In addition, the tribological performances of B₄C coating rubbing against SiC ball under 85 % RH were better than those of DLC/SiC friction pairs. This is mainly due to the formation of a thin tribo-chemical film containing boric acid with passivated edges sites and silica gel on the sliding interface. According to SEM results, the wear mechanism for the B₄C coating was also analyzed.

在目前的研究中，我们通过电位极化测试评估了B ₄ C涂层的耐腐蚀性。与304 L钢基材相比，采用不平衡磁控溅射技术沉积的B ₄ C涂层具有优异的耐腐蚀性。此外，我们通过圆盘球式摩擦计在各种正常载荷和滑动速度下，系统地测试了B ₄ C涂层在85％RH条件下与SiC球摩擦的性能。结果表明，盘的磨损率保持在10 ^-7  mm ³ ·N ^-1  m ^{-1的数量级}在5 N和0.07 m / s的条件下获得了非常低的摩擦系数（〜0.047）。此外，B ₄ C涂层在85％RH下与SiC球摩擦的摩擦学性能优于DLC / SiC摩擦副。这主要是由于形成了摩擦薄的化学薄膜，该薄膜包含硼酸，该硼酸具有钝化的边缘部位和在滑动界面上的硅胶。根据SEM结果，还分析了B ₄ C涂层的磨损机理。