Element name: titanium
Atomic weight of element: 47.87
Content of elements in seawater: (PPM)
zero point zero zero zero four eight
Content of elements in the sun: (PPM) 4
Element type: Metal
Number of protons in the nucleus: 22
Number of extranuclear electrons: 22
Number of nuclear power: 22
Proton mass: 3.6806e-26
Proton relative mass: 22.154
Atomic volume: (cm3 / mol):10.64
Content in crust: (PPM):5600
Titanium is a metallic element, gray, that burns in nitrogen and has a high melting point. Blunt titanium and titanium based alloys are new structural materials, which are mainly used in aerospace industry and navigation industry.
It took more than 100 years from the discovery of titanium to the preparation of pure products. It was after the 1940s that titanium was really utilized and its true face was recognized.
The 10 kilometer thick stratum on the geographical surface contains 6 / 1000 titanium, 61 times more than copper. Just grab a handful of soil from the ground, which contains a few thousandths of titanium. Titanium ore with reserves of more than 10 million tons in the world is not rare.
There are hundreds of millions of tons of sand and stone on the beach. Titanium and zirconium, two minerals heavier than sand and stone, are mixed in the sand and stone. After millions of years of continuous scouring by sea water day and night, the heavier ilmenite and zircon placer are washed together, forming titanium and zirconium layers on the long coast. This deposit is a kind of black sand, usually a few centimeters to tens of centimeters thick.
Titanium is not magnetic. Nuclear submarines built with titanium do not have to worry about the attack of magnetic mines.
In 1947, people began to smelt titanium in factories. That year, the output was only 2 tons. Production surged to 20000 tons in 1955. In 1972, the annual output reached 200000 tons. The hardness of titanium is similar to that of steel, and its weight is almost half that of steel of the same volume. Although titanium is slightly heavier than aluminum, its hardness is twice that of aluminum. Now, titanium is widely used instead of steel in space rockets and missiles. According to statistics, at present, more than 1000 tons of titanium are used in space navigation in the world every year. Very fine titanium powder is also a good fuel for rockets, so titanium is known as cosmic metal and space metal.
Titanium has good heat resistance, and its melting point is as high as 1725 ℃. At room temperature, titanium can lie unharmed in various strong acid and alkali solutions. Even the most ferocious acid, aqua regia, can't corrode it. Titanium is not afraid of sea water. Someone once sank a piece of titanium to the bottom of the sea. Five years later, he took it up and saw that it was stuck with many small animals and submarine plants, but it was still shiny without rust at all.
Now, people began to use titanium to make submarines - titanium submarines. Because titanium is very strong and can withstand high pressure, this submarine can navigate in the deep sea up to 4500 meters deep.
