研制金属切削刀具材料的最大目标,在于降低生产成本。提高刀具的耐磨性、红硬性、冲击强度等性能,均与实现上述目标有关。氧化铝陶瓷自四十年代作为新型刀具材料研制成功以来,深受重视。尽管这种材料硬度高,化学稳定性好,但由于韧性(冲击强度)低,因而使用范围受到限制。10余年来,不断研究,各种性能均有改进,使陶瓷在刀具材料领域中所占地位得以巩固。 Development of metal cutting tool materials, the biggest goal is to reduce production costs. Improve tool wear resistance, red hardness, impact strength and other properties, are related to the achievement of the above goals. Alumina ceramics have gained great attention since they were successfully developed as a new tool material in the forties. Although this material has high hardness and good chemical stability, its use is limited due to its low toughness (impact strength). More than 10 years, continue to study, all kinds of performance have improved so that the ceramic material in the field of tool to be consolidated.