Characteristics and Discovery of Titanium - Titanium is a chemical element with symbol Ti and atomic number 22. - It is found in nature as an oxide and can be reduced to produce a lustrous transition metal. - Titanium has a silver color, low density, and high strength. - It is resistant to corrosion in sea water, aqua regia, and chlorine. - Titanium was discovered in Cornwall, Great Britain, in 1791 by William Gregor.

Physical Properties of Titanium - Titanium has a high strength-to-weight ratio and is recognised for its strength. - It is a strong metal with low density and is ductile in an oxygen-free environment. - Titanium is lustrous and metallic-white in color. - It has a relatively high melting point of 1,668°C (3,034°F) and is paramagnetic. - Titanium has low electrical and thermal conductivity compared to other metals.

Chemical Properties of Titanium - Titanium forms a thin non-porous passivation layer when exposed to air, protecting it from further oxidation or corrosion. - It is resistant to oxidizing acids but dissolves in dilute hydrofluoric acid, hot hydrochloric acid, and hot sulfuric acid. - Titanium can withstand attack by dilute sulfuric and hydrochloric acids, chloride solutions, and most organic acids. - However, it is corroded by concentrated acids. - Titanium has excellent resistance to corrosion against oxidizing acids.

Extraction, Compounds, and Alloys of Titanium - Titanium is extracted from its principal mineral ores using the Kroll and Hunter processes. - The most common compound is titanium dioxide, which is used in the manufacture of white pigments. - Other compounds include titanium tetrachloride, used in smoke screens and catalysts, and titanium trichloride, used as a catalyst in polypropylene production. - Titanium can be alloyed with other elements like iron, aluminium, vanadium, and molybdenum to produce strong, lightweight alloys. - These alloys are used in aerospace, military, industrial, automotive, medical, and other applications.

Uses and Applications of Titanium - Titanium alloys are used in aerospace for jet engines, missiles, and spacecraft. - They are also used in military applications, industrial processes, automotive industry, agriculture, and medical prostheses. - Titanium is used in orthopedic implants, dental and endodontic instruments, dental implants, and sporting goods. - It is used in the manufacture of jewelry, mobile phones, and other consumer products. - The corrosion resistance and strength-to-density ratio of titanium make it highly useful in various applications.