Metal target refers to metal materials used in thin film preparation techniques such as physical vapor deposition (PVD) or chemical vapor deposition (CVD). They have high purity, uniformity and good mechanical properties, and are widely used in the following fields:

1. Semiconductor industry: Metal target is a very important material in the semiconductor industry. They are used to prepare metal films, such as aluminum, copper, titanium, chromium and other metal films, as well as to manufacture integrated circuits, display devices, solar cells and so on.

2. Optical coating: Metal targets are also used in the field of optical coating. By depositing metal films, the specific optical characteristics of optical elements such as lenses, filters and mirrors can be realized, such as reflection, transmission and filtering.

3. Conductive coating: Metal target plays a key role in conductive coating. For example, copper targets can be used to prepare conductive films, electrodes and materials for touch screens.

4. Preparation of metal alloy: Metal target can be used for alloy preparation. By controlling the composition and deposition conditions of the target, metal alloy materials with specific composition and properties, such as nickel-chromium alloy and cobalt-chromium alloy, can be prepared for aerospace, automobile manufacturing, chemical industry and other fields.

5. Hard coating: Metal targets are also used to prepare hard coatings. For example, tungsten target can be used to prepare carbon tungsten nitride (WCN) coating, which can improve the hardness and wear resistance of tools and dies and prolong their service life.