Quality appraisal of vacuum coating machine

vacuum coating machine is a device that uses vacuum technology to coat one material on the surface of another material. It mainly consists of a vacuum chamber, heating system, electron beam or ion source, coating materials and control system. The vacuum coating machine prepares functional materials such as metal films, oxide films, and metal alloy films by using high-energy ion beam or electron beam ablation under vacuum.
Since metal can form a dense metal oxide film, vacuum coating machines can be used in manufacturing to prevent metal products from being affected by oxidation and corrosion and increase their service life. Vacuum coating machines can achieve different metallic colors and effects by applying different electron beams or ion beams and plating different metal materials.
In the case of vacuum coating machine quality appraisal, Zhongke Testing can provide vacuum coating machine quality appraisal services.

1, film thickness measurement
film thickness is one of the important parameters for measuring coating quality. According to the requirements of different membranes, select appropriate equipment for measurement.
2, film quality analysis
film quality refers to the chemical composition, crystal structure, redox state, etc. of the coating material. Film quality analysis can provide a more comprehensive understanding of coating quality and avoid process instability or failure due to film quality problems.
3, film formation rate test
film formation rate refers to the transmission efficiency of the evaporation material from the source to the substrate surface, usually expressed as a percentage. Selecting appropriate testing methods for film formation rate testing can effectively control process parameters and improve coating efficiency and quality.
4, adhesion test
Adhesion refers to the bonding strength between the film and the substrate, and is one of the important indicators to measure the quality of the coating. Common adhesion testing methods include friction method, peeling method, indentation method and drilling method.
5, surface morphology analysis
surface morphology refers to the smoothness, roughness, uniformity and other characteristics of the coating surface. Surface morphology analysis can perform high-resolution imaging and roughness testing on the coating surface to further understand the film quality and surface morphology characteristics.
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GB/T 11164-2011 General technical conditions for vacuum coating equipment
GB/T 28786-2012 Vacuum technology Vacuum coating layer bonding strength measurement method Tape sticking method
SJ/T 31083-2016 Vacuum coating equipment integrity requirements and inspection and evaluation methods

A technology company believed that the vacuum coating machine it purchased did not have the magnetic control coating function, had serious quality problems, and did not comply with the "Processing Order Contract", so it had a dispute with the equipment manufacturer.
was entrusted by the court to conduct an appraisal and analysis on "whether there are quality problems" with the vacuum coating machine involved in the case.
identification and analysis results: The
identification and analysis expert group discussed the relevant information and on-site investigation of the vacuum coating machine involved and made a comprehensive quality and technical analysis, and made the following suggestions and conclusions: The
vacuum coating machine involved in the case has a magnetic control coating function and can use three target materials: cylindrical stainless steel target, cylindrical chromium target and cylindrical aluminum target for magnetic control coating of workpieces such as mobile phone covers, plexiglass (acrylic), plastic spoons, stainless steel plates and plastic rings.