The nickel content in the earth
Roomtemperature,Phillips Screws Manufacturers the nickel in the humid air will form a dense oxide film in thesurface, can prevent not only continues to be oxidized, and can bear alkali, canbear corroding in the salt solution.The nickel content in the earth's crust isno small, greater than common metals lead, tin, but obviously much less thaniron, and the melting point of nickel and iron is similar, nickel wasdiscovered in the 18th century on Europe after German first mixed with copper,made the so-called Germanic silver, or German silver, which is Chinesecopper-nickel alloy.In nature, the main nickel mines is the rednickel (nickel arsenide) the niccolite (sulfur nickel arsenide). Cuba is the world's most famous nationalreserves of nickel ore in the Dominican Republic, there are a lot of nickel ore.World metallurgical nickel accounted for 85% of the total nickel consumption.
Accordingto the information from metal powder exporter, the worlds nickelconsumption is as follows: 65% stainless steel; accounted for 5% of other alloysteel; non-ferrous alloys (nickel-based alloys and copper-based alloys)accounted for 15%; plating, nickel-cadmium batteries and foundry accounted for15%.Titanium-nickel alloy with the memory function, and the memory is verystrong, after quite a long time, repeated millions of times they are still accurate.Its "memory" skills is to remember its original shape, so people callit a shape memory alloy. That this alloy has a characteristic transitiontemperature, above the transition temperature, it has a tissue structure, whileunder the transition temperature, it has another organizational structure. Thestructure is different, the performance is also different. For example: anickel titanium memory alloy, when it is above the transition temperature, itis hard, high strength, and below this temperature, it is very soft and easycold working. Thus, when we need it to remember what shape, put it into thekind of shape, this is the "permanent memory" shape below thetransition temperature, because it is very soft, we can to a large extent toits arbitrary deformation. When you need to restore it to its original shape,you only need to heat it above the transition temperature.Nickel metal is mainly used for theelectroplating industry, nickel-plated items are beautiful, clean, and notprone to corrosion. Ultrafine nickel powder commonlyused as a catalyst in the chemical industry. Nickel is used extensively for themanufacture of alloys. Adding nickel in the steel can be improved themechanical strength. Nickel-chromium alloy is mainly used to make stainlesssteel and other corrosion-resistant alloys, such as nickel steel,nickel-chromium steel and a variety of non-ferrous alloys containingcopper-nickel alloys with high nickel components, corrosion will not be easy.
For hydrogenation catalyst for ceramics, specialty chemicals utensils,electronic circuits, glass with green, and a nickel compound preparation, etc.Nickel having magnetic, can be attracted toa magnet, while the aluminum alloy of cobalt and nickel, the magnetic is stronger.This alloy by electromagnets attract is not only be sucked, and things hangingbelow it 60 times heavier than it will not fall off. In this way, you can useit to create electromagnetic crane. Most nickel salts are green. Nickelhydroxide is brown-black or green, nickel oxide is gray and black. The nickeloxide used to produce an iron-nickel alkaline storage battery. Nickel hydroxideis often used as a cathode material for nickel-metal hydride and nickel-cadmiumbatteries.Source: