摘要
针对口腔修复领域中大量应用的预烧结氧化锆陶瓷存在二次烧结加工工艺复杂、收缩率难以控制、断裂率高等问题,提出了采用旋转超声加工完全烧结氧化锆陶瓷的方法。开展了完全烧结氧化锆陶瓷的旋转超声加工和普通金刚石磨削加工实验,重点研究了主轴转速对磨削力、最大边缘碎裂尺寸及亚表面损伤特性的影响规律。通过对比分析得到,旋转超声加工不仅能降低磨削力,有效抑制完全烧结氧化锆陶瓷材料的边缘碎裂,同时明显减少了其亚表面微裂纹,是实现完全烧结氧化锆陶瓷口腔修复体低损伤加工的新途径。
With the presintered zirconia ceramics widely used in prosthodontic, more and more problems were exposed, such as difficult to control shrinkage , high fracture rate and so on. A new method which used ultrasonic vibration assisted machining sintered zirconia ceramics was proposed. Machining sintered zirconia ceramics with rotary ultrasonic machining and diamond grinding was studied in this paper. Effects of spindle speed on cutting force, edge chipping size and subsurface damage were obtained. Compared with diamond grinding, the assistant for ultrasonic vibration not only reduces the cutting force and subsurface cracks significantly, but olso restrains the ultrasonic machining might be
出处
《人工晶体学报》
EI
CAS
CSCD
北大核心
2013年第9期1864-1869,共6页
Journal of Synthetic Crystals
基金
江苏省自然科学青年基金(BK2012402)
中央高校基本科研业务费专项资金(2012XQTR001)
国家自然科学基金青年项目(51305206)
关键词
氧化锆陶瓷
旋转超声加工
磨削加工
边缘碎裂
亚表面损伤
zirconia ceramic
the new low-damage method rotary ultrasonic machining
edge chipping effectively. Therefore, rotary for sintered zirconia ceramics. grinding
edge chipping
subsurface damage
