Effects of size on mass density and its influence on mechanical and thermal properties of ZrO$_2$ nanoparticles in different structures

Bulletin of materials science

MUSTAFA SAEED OMAR²  BOTAN JAWDAT ABDULLAH²  QING JIANG¹ 

[1] Department of Material Science and Engineering, Jilin University, Changchun 130022, China$$Department of Material Science and Engineering, Jilin University, Changchun 130022, ChinaDepartment of Material Science and Engineering, Jilin University, Changchun 130022, China$$;Department of Physics, College of Science, Salahaddin-Erbil University, Erbil 31019, Kurdistan Region, Iraq$$Department of Physics, College of Science, Salahaddin-Erbil University, Erbil 31019, Kurdistan Region, IraqDepartment of Physics, College of Science, Salahaddin-Erbil University, Erbil 31019, Kurdistan Region, Iraq$$

关键词: ZrO$_2$;    mass density;    mean bond length;    melting temperature;    Debye temperature;    cohesive energy.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

This study investigates the effect of size on mass density and its subsequent influence on the other physical parameters of zirconia nanoparticles in the structural forms of cubic, tetragonal and monoclinic. The general equations for these calculations are established based on the variation of lattice parameter model and surface internal atoms ratio. The mass density of nanoparticles differs from the bulk value when particle size decreases. At a diameter of 4 nm, the mass density values of zirconia nanoparticles are 3.898, 3.626 and 3.488 g $cdot$ cm$^{�?3}$ compared to 6.25, 6.1 and 5.87 g $cdot$ cm$^{�?3}$ for bulk cubic, tetragonal and monoclinic forms, respectively. These results indicate thatthe variation in mass density is largely due to the differences on their boundaries and the variation in lattice parameters. The calculated results agree well with the available experimental data for the monoclinic form structure ofZrO$_2$ nanoparticles. The relationship between mass density and melting temperature; and Debye temperature and cohesive energy are proposed. All these parameters have the same nanosize dependence in this regard.

【 授权许可】

Unknown