Explanation

It is a method to grow single crystal by moving the narrow melting zone across the materials with the aid of temperature Zen. Place the seed crystal at the left end of the material boat, initially allowing the seed crystal to melt slightly while keeping the surface clean. As the heater moves to the right, the melting zone also moves to the right. crystal are precipitated at the left end of the melting zone due to the decrease of temperature. There are horizontal melting method and suspended zone-melting method method. The advantage of the zone-melting method is that it can control the growth of impurities. In particular, the suspension zone-melting method does not use a crucible, and its heating temperature is not limited by the melting point of the crucible. It can be used to grow crystal with high melting point, such as tungsten single crystal (340CTC), and can avoid the pollution of the crucible. Since this method can only be used in vacuum, it cannot be used for materials with high vapor pressure or materials that will decompose. High purity metal can be obtained by combining zone melting method with impurity removal technology. With the development of production and technology, liquid sealed zone melting technology and micro zone melting technology also appear, making zone-melting method more widely used.

Classification