Electrical resistivity, elastic modulus, and debye temperature of titanium diboride

Refractory Diborides of Zirconium and Hafnium

“…The bonding in diborides also influences the anisotropy in properties. Microhardness measurements for TiB 2 conducted by Vehldiek 52 did not reveal any significant anisotropy in hardness along the a ‐ or c ‐axes. In comparison, the Young modulus showed a high degree of anisotropy in some diborides 53 .…”

“…The thermal and elastic properties of diborides are summarized in Table III 48–54 . The data indicate that the Group IV diborides have lower CTE and higher Young's modulus and thermal conductivity than Group V diborides 26 .…”

“…47 The thermal and elastic properties of diborides are summarized in Table III. [48][49][50][51][52][53][54] The data indicate that the Group IV diborides have lower CTE and higher Young's modulus and thermal conductivity than Group V diborides. 26 The property changes suggest that B-B bonds are strongest for Group IV atoms (Ti, Zr, and Hf) and the bonds weaken as atomic number increases across a period of the Periodic Table. Grimvall and Guillermet 46 found it useful to correlate cohesive energy and T m trends to the average number of valence electrons per atom for isostructural diborides.…”

Process‐Structure‐Reflectance Correlations for TiB2 Films Prepared by Chemical Vapor Deposition

“…[1][2][3][4][5][6][7][8][9][10][11][12] It is potentially useful as a reflective back contact layer in photovoltaic cells. Such applications include microelectronics, electrodes, optical mirrors, cutting tools, and other wear-and erosion-resistant components.…”

“…They made the following assumptions for their analysis: (1) there is local thermochemical equilibrium; (2) deposition is mass transfer (diffusion) controlled; and (3) a chemically frozen boundary layer exists. In their model, mass transfer is taken into account for a steady-state diffusion-controlled CVD system.…”