DLC coating process technology is an advanced surface coating technology, which improves the hardness, wear resistance and corrosion resistance of the material by forming a diamond-like carbon coating on the surface of the base material, so that it has a longer service life and better performance, and the preparation process mainly includes five steps: ion source, surface cleaning, pretreatment, deposition and post-treatment.
Ion source
First of all, the ion source is the core part of the DLC coating process, which includes the hydrogen carbide ion source and the ion acceleration device. Talking about hydrogen carbide ion source, by introducing gas hydrogen and methane to produce an ion beam under high temperature and high pressure conditions, to provide carbon source substances. Ion accelerators are used to accelerate the ion beam so that it has enough energy and velocity to form a hard carbon coating on the surface of the base material.
2. Clean surface
Secondly, in order to ensureDLC coatingThe quality and adhesion, surface cleaning and pre-treatment are crucial steps. Surface cleaning consists of two parts: chemical cleaning and mechanical cleaning, which removes impurities and contaminants to make the surface of the base material have good adsorption. Pretreatment further enhances the adhesion of the DLC coating by increasing the surface energy of the base material.
Carbon atomsDeposition
Then, the deposition isDLC coatingThe core step of the preparation is to form a hard carbon coating by directing an ion beam to the surface of the base material, causing carbon atoms to be deposited on the surface. During the deposition process, parameters such as energy, time, and angle of the ion beam need to be controlled to ensure the uniformity and consistency of the coating.
4. Post-processing
Finally, post-processing isDLC coatingThe last step of the process, which is mainly through methods such as high-temperature treatment or glow discharge, further improves the compactness and hardness of the coating. Post-treatment can also eliminate stress and porosity in the coating, improving its wear and corrosion resistance.
Overall, DLC coating technology is an advanced surface coating technology that can significantly improve the hardness, wear resistance and corrosion resistance of materials. Its preparation process consists of five steps: ion source, surface cleaning, pretreatment, deposition, and post-treatment, each of which plays an important role. Through continuous improvement of process technology and equipmentDLC coating technologyIt has a wide range of application prospects in various fields, such as automotive, aerospace, electronics, etc.