Si3N4 耐高温全陶瓷向心关节轴承磨损性能研究
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中图分类号：TH117.1DOI：10.3969/j.issn.1004-132X.2025.09.010 开放科学（资源服务）标识码（OSID）：
StudyonWear Performanceof Si3N4 High Temperature ResistantAll Ceramic Spherical Plain Bearings
LI Songhua1² XUE Baoyuan1 ZUO Chuang1 1.School of Mechanical Engineering，Shenyang Jianzhu University，Shenyang，110168 2.High-grade Stone CNC Machining Equipment and Technology National Local Joint Engineering Laboratory，Shenyang，110168
Abstract： The contact characteristics and wear properties of Si3N4 high temperature resistant all ceramic radial spherical plain bearings were studied under high temperature conditions. Based on thermalmechanics coupling finite element simulation method，the temperature fields of the inner and outer rings of the spherical plain bearings were analyzed. The wear tests were carried out by using self-developed hightemperature spherical plain bearing test machine. The wear surface morphology and composition of diferent contact areas of inner and outer rings were analyzed by scanning electron microscope and energy dispersive spectrometer，and the wear mechanism of all ceramic spherical plain bearings was proved. Results show that the wear processs of all ceramic spherical plain bearingsat 400∘C are mainly divided into a running-in period with a significant increase in wear and a stable wear period with a slow increase in wear. The wear areas are mainly divided into core bearing areas dominated by adhesive wear and oxidation wear， and non-core bearing areas dominated by abrasive wear. The wear loss of the spherical plain bearings is as 108μm under the condition of 200N radial load， 2Hz swing frequency and ±25∘ swing angle，25 000 swing times. The wear resistance is good and the running state is stable.
Key words： Si3N4 ceramics；spherical plain bearing；high temperature environment； thermomechanics coupling；wearmechanism
0 引言
关节轴承通常是由带内球面的外圈和带外球面的内圈构成的球面滑动轴承[1]，此类轴承在航空航天、高温机械、生物工程中得到了广泛使用，具备承受高负荷、实现持久耐用性、旋转便捷、维护需求低、结构紧凑和便于安装与拆卸的特性。（剩余10740字）
