How much do you know about titanium diboride?

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Overview of titanium diboride
The titanium diboride powder is gray or gray-black and has a hexagonal (AlB2) crystal structure. Its melting point is 2980°C and it has high hardness. The anti-oxidation temperature of titanium diboride in the air can reach 1000℃, and it is stable in HCl and HF acid. Titanium diboride is mainly used to prepare composite ceramic products. Because of its resistance to molten metal corrosion, it can be used in the manufacture of molten metal crucibles and electrolytic cell electrodes.
 
Composition structure of titanium diboride
Titanium boride (TiB2) is the most stable compound of boron and titanium. It has a C32 structure and is combined in the form of valence bonds. It is a metalloid compound of the hexagonal crystal system. The structural parameters of the complete crystal are: a is 0.3028nm, and C is 0.3228nm. In the crystal structure, the boron atom plane and the titanium atom plane alternately form a two-dimensional network structure, in which B is covalently bonded with the other three Bs, and an extra electron forms a large π bond. This graphite-like layered structure of boron atoms and Ti outer layer electrons determine the good conductivity and metallic luster of TiB2, and the Ti-B bond between the boron atomic surface and the titanium atomic surface determines the high hardness of this material And brittleness.
 
Production method
The boron carbide method is also known as the carbothermic reduction method. Its 2TiO2+B4C+3=2TiB2+4CO vapor deposition method uses TiCl4 and BCl3 as raw materials. With the participation of ChemicalbookH2, the deposition temperature is 800~1000℃, which can produce abrasive grades and Electronic grade product, the chemical formula is TiCl4+2BCl3+5H2=TiB2+10HCl
 
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