计算物理 ›› 1997, Vol. 14 ›› Issue (1): 1-5.

• 论文 •    下一篇

碳化钛与氮化钛类陶瓷材料结构、性能与量子化学计算研究

闵新民, 邓志平, 李嘉宇, 袁润章   

  1. 武汉工业大学新材料研究所, 武汉 430070
  • 收稿日期:1995-03-17 出版日期:1997-01-25 发布日期:1997-01-25

STRUCTURE,PROPERTY AND QUANTUM CHEMISTRYCALCULATIONS OF CERAMICS OF TIC AND TIN

Min Xinmin, Deng Zhiping, Li Jiayu, Yuan Runzhang   

  1. Advanced Materials Research Institute, Wuhan University of Technology, Wuhan 430070
  • Received:1995-03-17 Online:1997-01-25 Published:1997-01-25

摘要: 用自洽场离散变分Xα(SCF-Xα-DV)量子化学计算方法研究了碳化钛、氮化钛、氧化钛及碳化钛掺铌等陶瓷材料,讨论了结构、性能与化学键之间的关系。计算结果符合硬度和强度的次序碳化钛 > 氮化钛 > 氧化钛,及随(NbyTi1-y)Cx掺杂晶体系列样品掺铌量的增加,碳空位数随之增加,样品的显微硬度与电阻率随之减小的实验结果。

关键词: 碳化钛类陶瓷, 结构与性能, 量子化学计算

Abstract: The relations among structure property and chemical bond of TiC,TiN and TiO ceramics,as well as Nb doped TiC,are studied with SCF Xα DV,one of the quantum chemistry calculating methods.The calculated results are consistent with the experimental results that the hardness and strength are in the order of TiC > TiN > TiO,and when Nb element added to TiC increases,the vacancies being in short of C atom increase,hardness and resistance of the series samples of (NbyTi1-y)Cx decrease correspondingly.

Key words: TiC ceramic, structure and property, quantum chemistry calculating

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