Thursday, August 28, 2014

titanium alloy and nickel alloy

Titanium alloy titaniumcn has good heat resistance strength, toughness and fracture toughness at low temperature, so the more used as aircraft engine components and rocket and missile components.In addition, because the titanium alloy also has good compatibility with the human body, so the titanium alloy can also be artificial bone.
The corrosion resistance of zirconium nitrate titanium and zirconium hydroxide titanium is a kind of application to the atomic energy industry and used as a corrosion resistant chemical materials under high temperature and high pressure, but its live wave after sodium in aqueous solution.According to the experiment, titanium into the bottom 20 ~ 50 annual average won't corrode.
Under normal temperature, nickel in wet surface and the oxide film formed in the air, not only can prevent continue to be oxidation, corrosion and alkali resistant, salt solution.Massive nickel does not burn, thin nickel wire flammable, special tiny porous nickel particles in the air will be spontaneous combustion.When heated, nickel with oxygen, sulfur, chlorine and bromine intense reaction occurs.
Nickel chromium alloy is mainly used to manufacture stainless steel and other corrosion resistant alloys, such as nickel steel, nickel chromium steel and various non-ferrous metal alloy, nickel composition higher copper and nickel alloy, easy corrosion.Hydrogenation catalyst and also used in ceramic products, glass, electronic circuit, special chemical vessels with green and nickel compound preparation and so on.
Elements of auxiliary materials:
Nickel content in the earth's crust, is greater than the common metals such as lead, tin, but much less obvious than iron, and nickel and iron melting point, thus doomed it found later than iron.
Nickel basic knowledge is introduced
In nature, the main nickel mine is the red nickel (nickel arsenide) and fai arsenic nickel (sulfur nickel arsenide).Cuba is one of the world's most famous contain nickel countries, also have a large amount of nickel in the Dominican republic.
Nickel is mainly used in electroplating industry, nickel plated item is beautiful, clean, and not easy to rust.Very fine nickel powder, in the chemical industry used as catalyst.
Titanium alloy has a "memory" of ability, and memory is very strong, after a long time, repeated millions of times are accurate.It is "memory" of the ability to remember its original shape, so people call it "shape memory alloy.This alloy has a characteristic transition temperature, above the transition temperature, it is a kind of organizational structure, and under the transition temperature, it is another kind of organizational structure.The structure, performance is different.For example, a nickel titanium memory alloy, when it is above the transition temperature, is very hard, strength, and under this temperature, it is very soft, easy to manufacture.What shape memory so that when we need it, just make it a kind of shape, this is it "permanent memory" shape, below the transition temperature, because it is very soft, we can in a considerable degree of arbitrary deformation.When need it to restore to its original shape, as long as it is heated to just above the transition temperature.
Nickel are magnetic, can be magnet attracted.And made of aluminum, cobalt and nickel alloy, magnetic is stronger.This alloy by electromagnet attraction, not only they will be sucked in the past, and below it hanging sixty times heavier than its thing, also won't fall down.In this way, it can be used to manufacture magnetic crane.
Nickel salts are mostly green.Nickel hydroxide is dark brown, nickel oxide is a film.Nickel oxide is used to manufacture iron nickel alkaline battery.

1 comment:

  1. Titanium alloy and nickel alloys are explained at their best. All liitle details can be proved to be helpful to know more about these alloys.

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