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Self-lubricating joint bearing and preparation method thereof
The invention relates to the technical field of aviation, in particular to a self-lubricating knuckle bearing. Due to the fact that the bearing inner ring and the bearing outer ring are made of ceramic, the mechanical property of the knuckle bearing at the high temperature is improved, meanwhile, due to the fact that the Ti-doped diamond-like composite coating has the good self-lubricating property under the high-temperature working condition, the high-temperature friction coefficient of the friction surface can be reduced, and the high-temperature abrasion resistance of the material is enhanced; the lubricant is deposited on the surface of the inner ring of the knuckle bearing as a solid lubricant, so that the frictional wear performance of the knuckle bearing under high-temperature non-lubrication conditions can be effectively improved. The Ti transition layer is further arranged between the outer spherical surface of the bearing inner ring and the Ti-doped diamond-like coating, so that the coating deposited on the outer spherical surface of the bearing inner ring has better self-lubricating performance while ensuring that the coating has better binding force, the contact surface of the bearing inner ring and the bearing outer ring is prevented from being violently abraded when the knuckle bearing is under a high-temperature working condition, and the service life of the knuckle bearing is prolonged. And the reliability of the adjustable stator blade system of the aero-engine is further improved.
本发明涉及航空技术领域，尤其涉及一种自润滑关节轴承。由于轴承内圈和轴承外圈的材质为陶瓷，提高了关节轴承在高温下的力学性能，同时由于Ti掺杂类金刚石复合涂层在高温工况下具备良好的自润滑性能，可以降低摩擦面的高温摩擦系数，增强材料的高温耐磨性，选用其作为固体润滑剂沉积在关节轴承内圈表面，可有效改善关节轴承高温无润滑条件下的摩擦磨损性能。在轴承内圈的外球面和Ti掺杂类金刚石涂层之间还设有Ti过渡层，在确保轴承内圈的外球面所沉积的涂层具有较好结合力的同时，又使得涂层具有更好自润滑性能，避免了关节轴承在高温工况下轴承内圈和轴承外圈的接触面剧烈磨损，进而提高了航空发动机可调静子叶片系统的可靠性。
Self-lubricating joint bearing and preparation method thereof
The invention relates to the technical field of aviation, in particular to a self-lubricating knuckle bearing. Due to the fact that the bearing inner ring and the bearing outer ring are made of ceramic, the mechanical property of the knuckle bearing at the high temperature is improved, meanwhile, due to the fact that the Ti-doped diamond-like composite coating has the good self-lubricating property under the high-temperature working condition, the high-temperature friction coefficient of the friction surface can be reduced, and the high-temperature abrasion resistance of the material is enhanced; the lubricant is deposited on the surface of the inner ring of the knuckle bearing as a solid lubricant, so that the frictional wear performance of the knuckle bearing under high-temperature non-lubrication conditions can be effectively improved. The Ti transition layer is further arranged between the outer spherical surface of the bearing inner ring and the Ti-doped diamond-like coating, so that the coating deposited on the outer spherical surface of the bearing inner ring has better self-lubricating performance while ensuring that the coating has better binding force, the contact surface of the bearing inner ring and the bearing outer ring is prevented from being violently abraded when the knuckle bearing is under a high-temperature working condition, and the service life of the knuckle bearing is prolonged. And the reliability of the adjustable stator blade system of the aero-engine is further improved.
本发明涉及航空技术领域，尤其涉及一种自润滑关节轴承。由于轴承内圈和轴承外圈的材质为陶瓷，提高了关节轴承在高温下的力学性能，同时由于Ti掺杂类金刚石复合涂层在高温工况下具备良好的自润滑性能，可以降低摩擦面的高温摩擦系数，增强材料的高温耐磨性，选用其作为固体润滑剂沉积在关节轴承内圈表面，可有效改善关节轴承高温无润滑条件下的摩擦磨损性能。在轴承内圈的外球面和Ti掺杂类金刚石涂层之间还设有Ti过渡层，在确保轴承内圈的外球面所沉积的涂层具有较好结合力的同时，又使得涂层具有更好自润滑性能，避免了关节轴承在高温工况下轴承内圈和轴承外圈的接触面剧烈磨损，进而提高了航空发动机可调静子叶片系统的可靠性。
Self-lubricating joint bearing and preparation method thereof
一种自润滑关节轴承及其制备方法
LI SONGHUA (author) / WANG XIAOLONG (author) / FAN SHENGQI (author) / YU DANTONG (author) / DENG JING (author) / ZUO CHUANG (author)
2024-10-01
Patent
Electronic Resource
Chinese
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