| 高温自润滑陶瓷刀具材料及其切削性能的研究 |
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| 引用本文： | 邓建新,丁泽良,赵军,王景海,艾兴. 高温自润滑陶瓷刀具材料及其切削性能的研究[J]. 机械工程学报, 2003, 39(8): 106-109 |
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| 作者姓名： | 邓建新 丁泽良 赵军 王景海 艾兴 |
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| 作者单位： | 山东大学机械工程学院 |
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| 基金项目： | 国家自然科学基金(50275088)，教育部优秀青年教师资助计划(2055)，山东省优秀中青年科学家奖励基金(02BS064) |
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| 摘 要： | 以TiB2为添加剂，Al2O3为基体，制备了Al2O3/TiB2陶瓷刀具材料。以该陶瓷刀具对淬硬钢进行高速干切削试验，利用其在切削高温作用下的摩擦化学反应，在刀具材料表面原位生成具有润滑作用的反应膜，从而实现Al2O3/TiB2陶瓷刀具材料本身的高温自润滑。研究了Al2O3/TiB2陶瓷刀具在切削高温作用下刀具表面的摩擦化学反应机理，分析了刀具表面自润滑膜的组成结构。结果表明：Al2O3/TiB2陶瓷刀具在干切削淬硬钢时，当切削速度大于120 m/min时，开始表现出高温自润滑性能。自润滑膜的组成为Al2O3/TiB2陶瓷刀具中TiB2的氧化产物，它能在刀具表面起到固体润滑剂的作用，进而降低前刀面的摩擦因数，减轻刀具的粘着磨损，提高刀具的耐磨性能，具有良好的减摩和抗磨作用。
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| 关 键 词： | 刀具材料 摩擦磨损 切削加工 自润滑 |
| 修稿时间： | 2002-06-05 |
SELF-LUBRICATING CERAMIC TOOL MATERIALS AND ITS CUTTING PERFORMANCES |
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| Deng Jianxin Ding Zeliang Zhao Jun WangJinghai AiXing. SELF-LUBRICATING CERAMIC TOOL MATERIALS AND ITS CUTTING PERFORMANCES[J]. Chinese Journal of Mechanical Engineering, 2003, 39(8): 106-109 |
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| Authors: | Deng Jianxin Ding Zeliang Zhao Jun WangJinghai AiXing |
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| Affiliation: | Shandong University |
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| Abstract: | Al2O3/TiB2 ceramic cutting tool is produced by hot pressing technique. Dry cutting tests are carried out on hardened steel with this ceramic tool. The tribological- chemical reaction and the oxide films on the tool face are studied. Results showed that self-lubrication took place when the cutting speed is higher than 120 m/min. The composition of the self-lubricating film is found to be the oxidation products of TiB2 grain, which can be act as the lubricating additives. Both the friction coefficient and the wear rates are reduced under these conditions. This self-lubricating ceramic tool can be used to reduce the friction-coefficient and to improve the wear resistance. |
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| Keywords: | Machining Tool material Self-lubrication Friction and wear |
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