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NAYCON 是日本钨公司研制的氮化硅(Si_3N_4)基新型陶瓷刀具的商标。这是以Si_3N_4的粉末为主要原料,添加百分之几的烧结辅助剂来提高烧结性能,从而得到与理论密度相一致的没有气孔的新型刀具。它保留了氧化铝基陶瓷刀具的特点,同时解决了陶瓷刀具耐热冲击性能差和韧性差的缺陷。优点: 1、优异的耐热性能:它在室温下的抗弯强度为100kg/mm~2以上,其强度和硬度在1000℃的高温下几乎不下降,是陶瓷刀具中韧性最高、重量又较轻的一类。同时,其导热率约为氧化铝基陶瓷刀具的3倍,是市售陶瓷刀具中最好的;其
NAYCON is a trademark of a new type of silicon nitride (Si_3N_4) based ceramic tool developed by Japan Tungsten Company. This is based on the Si_3N_4 powder as the main raw material, add a few percent of the sintering aid to improve the sintering performance, resulting in theoretical density consistent with no porosity of the new tool. It retains the characteristics of alumina-based ceramic tool, while solving the ceramic tool poor thermal shock resistance and poor toughness defects. Advantages: 1, excellent heat resistance: its bending strength at room temperature of 100kg / mm ~ 2 or more, its strength and hardness at 1000 ℃ under almost no decline in high temperature, is the highest ceramic tool toughness, weight and more Light kind. At the same time, its thermal conductivity is about 3 times that of alumina-based ceramic cutting tools, which is the best among the commercially available ceramic cutting tools; its