Characteristics and Advantages of Titanium Diboride

Titanium diboride powder is gray or dark gray, with a hexagonal (AIB2) crystal structure. It has a melting point of 2980℃ and high hardness. Titanium diboride is resistant to oxidation in air up to 1000℃ and is stable in HCl and HF acids. Its density can reach 4.52g/cm³; coefficient of thermal expansion 8.1×10-6m/m.k; thermal conductivity 25J/m.s.k; resistivity 14.4μΩ.cm; Titanium diboride is mainly used to prepare composite ceramic products. Due to its resistance to corrosion by molten metals, it can be used in the manufacturing of molten metal crucibles and electrolytic cell electrodes.
Composition and Structure: Titanium boride (TiB2) is the most stable compound of boron and titanium, with a C32 type structure, combined in its valence bond form, and is a hexagonal quasi-metal compound. The structural parameters of its complete crystal are: a is 0.3028nm, and C is 0.3228nm. In the crystal structure, boron atom planes and titanium atom planes appear alternately to form a two-dimensional network structure, in which B is covalently bonded to 3 other B atoms, and the extra electron forms a large bond. This graphite-like layered structure of boron atoms and Ti outer electrons determine the good conductivity and metallic luster of TiB2, while the Ti-B bond between the boron atom plane and the titanium atom plane determines the high hardness and brittleness of this material.
Features and Advantages
1. High Hardness: Hardness close to diamond, suitable for high wear-resistant environments.
2. High Melting Point: Melting point of approximately 3225℃, suitable for high-temperature applications.
3. Conductivity: Good conductivity, can be used as electrode material.