Can a customized nitrogen vacuum furnace be used for coating?

Customized nitrogen vacuum furnace can be used for coating. The following will explain the principles, process implementation, and application cases:

The principle of vacuum coating and the adaptability of nitrogen vacuum furnace
Vacuum coating technology is the process of depositing coating materials onto the surface of a substrate through physical or chemical methods in a vacuum environment to form a thin film. The core of it is that the vacuum environment can prevent gas molecules from contaminating and interfering with the coating material and substrate surface, improving the quality and purity of the coating. Customized nitrogen vacuum furnaces can create and maintain the required vacuum environment, and their equipped vacuum pump systems (such as rotary vane pumps and Roots pump combinations) can quickly pump the furnace to a high vacuum state, meeting the vacuum requirements of coating processes.

The role of nitrogen in coating process
During the vacuum coating process, nitrogen serves as an inert gas and has the function of eliminating oxygen and preventing oxidation. In vacuum ion plating, filling nitrogen can produce silver and yellow products, and by adjusting the ratio of nitrogen to other gases (such as argon, acetylene, etc.), different colored products can also be plated. In addition, nitrogen can also be used to regulate the pressure inside the vacuum chamber, but attention should be paid to controlling the flow rate to avoid errors caused by drastic pressure changes.

Implementation of customized nitrogen vacuum furnace in coating process
Customized nitrogen vacuum furnaces can be designed according to the specific requirements of the coating process, such as equipped with evaporation sources (used to heat the coating material to evaporate), substrate racks (used to place the substrate to be coated), substrate heaters (used to preheat the substrate and improve coating adhesion), etc. During the coating process, the coating material is placed in an evaporation source inside a vacuum chamber and heated by the evaporation source under high vacuum conditions to evaporate. The vapor molecules directly reach the surface of the substrate to be coated and condense into a film.

Application Cases
In practical applications, customized nitrogen vacuum furnaces have been successfully used for coating treatment of various metal and non-metal materials. For example, when coating a titanium transition layer on a stainless steel substrate, vacuum can be first applied to a certain pressure, then nitrogen gas can be introduced and the power and substrate bias can be set for coating. In addition, by adjusting the gas type and flow rate, coatings of different materials can be sequentially deposited on the same coating surface to meet specific performance requirements.