Thermodynamic modeling of the Hf-N system

Journal of Mining and Metallurgy. Section B: Metallurgy

Pang M.¹  Zhou P.²  Peng Y.³  Du Y.⁴ 

[1] Central South University, State Key Lab of Powder Metallurgy, Changsha, China;Hunan University of Science and Technology, School of Mechanical and Electrical Engineering, Xiangtan, China;Hunan University of Technology, College of Metallurgy and Material Engineering, Zhuzhou, China;aCentral South University, State Key Lab of Powder Metallurgy, Changsha, China;

关键词: CALPHAD;    Hf-N;    phase diagram;    Hafnium nitrides;   

DOI  :  10.2298/JMMB170520055P

来源: DOAJ

【 摘 要 】

Hf-N based alloys have been widely used and studied in the fields of electronic devices and cutting tools industry. A thermodynamic description of this system is essential for further materials development. By means of CALPHAD method, a thermodynamic modeling of the Hf-N system was carried out based on the available phase diagram data as well as thermodynamic property data. The Fcc phase is modeled as (Hf, Va)1(N, Va)1 to cover the composition range since the solubility of nitrogen in Fcc phase is reported up to about 52 at.%. A set of self-consistent thermodynamic parameters for the Hf-N system has been obtained. The computed phase diagrams and thermodynamic quantities using the present parameters agree well with the experimental data.

【 授权许可】

Unknown