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首页> 外文会议>European space mechanisms and tribology symposium >VACUUM TRIBOLOGICAL BEHAVIOUR OF SELF LUBRICANT QUASICRYSTALLINE COMPOSITE COATINGS
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VACUUM TRIBOLOGICAL BEHAVIOUR OF SELF LUBRICANT QUASICRYSTALLINE COMPOSITE COATINGS

机译：自润滑剂拟丙氨酸复合涂料的真空摩擦学行为

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High temperature resistant self-lubricant coatings are needed in space vehicles for components that operate at high temperatures and/or under vacuum. Thick composite lubricant coatings containing quasicrystalline alloys (QC) as the hard phase for wear resistance, have been deposited by thermal spray. The coatings also comprise lubricating materials (silver and BaF_2-CaF_2 eutectic) and NiCr as the tough component. This paper describes the vacuum tribological properties of TH103, a coating belonging to this family, with excellent microstructural quality. The coating was deposited by HVOF and tested under vacuum on a pin-on-disc tribometer. Different loads, linear speeds and pin materials were studied. The pin scars and disc wear tracks were characterized by EDS-SEM. A minimum mean steady friction coefficient of 0.32 was obtained employing a X-750 Ni superalloy pin in vacuum conditions under 10 N load and 15 cm/s linear speed, showing moderate wear of the disc and low wear of the pin.
机译：在空间车辆中需要高温耐用自润滑剂涂料，用于在高温和/或真空下操作的组件。通过热喷涂沉积含有丙氨酸合金（QC）的厚复合润滑剂涂层作为耐磨性的硬相。涂层还包括润滑材料（银和BAF_2-CAF_2共晶）和NICR作为坚韧的组分。本文介绍了TH103的真空摩擦学性质，属于该家族的涂层，具有优异的微观结构质量。通过HVOF沉积涂层并在销盘摩擦计上在真空下进行测试。研究了不同的负载，线性速度和销材料。 PIN疤痕和圆盘磨损轨道的特征在于EDS-SEM。在10N负载下的真空条件下采用X-750 Ni超合金销和15cm / s的线速，获得最小平均稳定摩擦系数0.32，显示出圆盘的中等磨损和销的低磨损。

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