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研究了由ＳｉａｌｏｎＳｉ３Ｎ４陶瓷球、９Ｃｒ１８内外环以及由ＰＴＦＥ和玻璃纤维制成的保持架组合成的混合式陶瓷球轴承在液氮气氛和重负荷条件下的摩擦磨损性能．结果表明：通过９０ｍｉｎ的－１９６℃超低温台架试验后，混合式陶瓷球轴承仍可以正常工作．对试验后的陶瓷球进行显微镜观察未发现大面积的接触疲劳破坏，但在内外环滚道表面有轻微疲坑．混合式陶瓷球轴承的摩擦功耗明显低于钢制球轴承．
The friction and wear properties of hybrid ceramic ball bearings consisting of Sialon Si3N4 ceramic balls, 9Cr18 inner and outer rings, and cages made of PTFE and glass fiber under liquid nitrogen atmosphere and heavy load were investigated. The results show that hybrid ceramic ball bearings can still work normally after 90 min -196 ℃ ultra-low temperature bench test. The microscopic observation of the ceramic ball after the test showed no large-scale contact fatigue failure, but the inner and outer ring raceway surface slight fatigue. Hybrid ceramic ball bearings frictional power consumption was significantly lower than steel ball bearings.