The powders of hBN, SiC, and B₄C were employed as the raw ingredients to prepare the B₄C–SiC–hBN composite ceramics by a vacuum high-pressure sintering method with hBN and SiC contents in the range of 0, 10, and 20 wt.%, respectively. A pin-on-disc testing equipment was used to assess the tribological properties of B₄C–SiC–hBN composite ceramics with various hBN and SiC content when sliding against AISI 347 steel immersed in the emulsion. The experiment’s findings indicate that the sliding COF of the B₄C/AISI 347 steel pair marginally drops as the sliding distance increases. Besides, the sliding COF of the B₄C–10 wt.% SiC–20 wt.% hBN/AISI 347 steel pair rapidly declines. By tribopairs of B₄C–SiC–hBN composite ceramics against AISI 347 steel under the condition of lubrication by water-based emulsion, the steady-state friction may move into a state of mix lubrication as the hBN concentration rises, improving the tribological performance. The steady-state COF considerably decreases to 0.01 from 0.386 as the hBN and SiC concentration is increased to 20 wt.% and 10 wt.% from zero, showing a decreasing trend for both the B₄C–SiC–hBN pin and AISI 347 steel disc samples’ COWs. The steady-state friction of tribopairs of B₄C–SiC–hBN composite ceramics against AISI 347 steel may enter a state of mixed lubrication in the emulsion. The wear resistance of composite ceramics was improved by the addition of hBN and SiC particles because of their lubricating and reinforcing effects. These findings offer valuable insights into the design and development of advanced composite ceramics for various industrial applications that require improved tribological properties.

_{以hBN、SiC、B 4} C粉末为原料，采用真空高压烧结法制备了hBN、SiC含量分别为0、10、10、10的B ₄ C-SiC-hBN复合陶瓷。和 20 重量％，分别。使用钉盘测试设备来评估具有不同 hBN 和 SiC 含量的 B ₄ C-SiC-hBN 复合陶瓷在浸入乳液中的 AISI 347 钢上滑动时的摩擦学性能。实验结果表明，随着滑动距离的增加，B ₄ C/AISI 347 钢对的滑动摩擦系数略有下降。此外，B ₄ C–10 wt.% SiC–20 wt.% hBN/AISI 347 钢对的滑动摩擦系数迅速下降。B ₄ C-SiC-hBN复合陶瓷与AISI 347钢的摩擦副在水基乳液润滑条件下，随着hBN浓度的升高，稳态摩擦可能进入混合润滑状态，从而改善摩擦学性能。当 hBN 和 SiC 浓度从零增加到 20 wt.% 和 10 wt.% 时，稳态 COF 从 0.386 显着降低到 0.01，显示 B 4 C–SiC–hBN 销和 AISI 347 均呈_下降趋势钢盘样品牛。_{B 4} C-SiC-hBN 复合陶瓷摩擦副与 AISI 347 钢的稳态摩擦可能会进入乳液中的混合润滑状态。由于六方氮化硼和碳化硅颗粒的润滑和增强作用，复合陶瓷的耐磨性得到了提高。这些发现为需要改进摩擦学性能的各种工业应用的先进复合陶瓷的设计和开发提供了宝贵的见解。