“…ZrB2 has low theoretical density (6.09 g/cm 3 ), high melting temperature, high hardness, high thermal conductivity, chemical inertness against molten metals, and good thermal shock resistance [1], which attracts more attention in corrosion, wear, and oxidation of ultrahigh temperature applications [2][3][4]. ZrB2 coating can be fabricated by methods including magnetron sputtering [5], plasma spray [6,7], and chemical vapor deposition (CVD) [8,9]. Among these methods, CVD is one of the most effective methods for preparation of thin films and protective coatings [10,11].…”