摘要
依据固体分子经验电子理论,运用键距差方法,计算了不同成分金属陶瓷中陶瓷相的价电子结构,讨论了Mo、W、Nb、Ta元素对陶瓷相价电子结构的影响,找出了金属陶瓷的断裂韧性与陶瓷相价电子结构之间的关系,据此推导出金属陶瓷的断裂韧性与其成分之间的关系式。
Based on the empirical electron theory of solids and molecules,the valence electron structures of Ti(C,N) based cermets with different compositions have been calculated by means of bond length difference (BLD) method.The effects of such elements as molybdenum,tungsten,niobium and tantalum on the valence electron structures of ceramics have been discussed.The relationship between the valence electron structures of ceramics and the fracture toughness of cermets has also been proposed,and the relationship between the chemical composition and fracture toughness of cermets has been studied and primary tests also conducted.
出处
《合肥工业大学学报(自然科学版)》
CAS
CSCD
1999年第4期1-5,共5页
Journal of Hefei University of Technology:Natural Science
基金
国家自然科学基金
华中理工大学模具技术国家重点实验室基金
关键词
金属陶瓷
断裂韧性
化学成分
价电子结构
cermets
fracture toughness
chemical composition
valence electron structure