The cooling rate due to the formation of different material is very different. A single metal requires a cooling rate of up to one hundred million degrees per second to form a non crystalline state. Limited by the current process level, the actual production is difficult to achieve such a high cooling rate, the ordinary single metal is difficult to produce from the production of amorphous. In order to obtain an amorphous metal, metal and other materials are generally mixed. When the atomic size and the nature of the different kinds of material collocation mixed, forming a alloy. These alloys have two important properties: alloy composition generally so-called points "eutectic" that in metallurgy near, their melting far below pure metal, such as melting point of FeSiB alloy is generally below 1200 degrees, and the melting point of iron to 1538 degree; (2) due to a number of kinds of atoms, alloy in liquid their atoms are more difficult to move, on cooling more difficult to neatly arranged. That is to say are more likely to be "frozen" into an amorphous. With the above two important conditions, it is possible to form an amorphous alloy. In fact, all of the practical amorphous alloys, such as Fe-Si-B, FeNiPB, CoZr, ZrTiCuNi, are two or more.
 

So far, the development of amorphous alloys at home and abroad is a kind of soft magnetic material. One common ground in chemical composition is that they are composed of two types: one is ferromagnetic (iron, cobalt, nickel, or their combination). The other is silicon, boron, carbon, etc. they are called metal, which is also called the glass.