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  • Common Vacuum Terminology 7

    1.degassing：Artificial desorption of gases from materials. 2.outgassing：Gas is naturally desorbed from materials. 3.qGU desorption or outgassing or degassing rate：Within a given time interval, the gas...

  • Common Vacuum Terminology6

    1.adsorption：Adsorption of gases or vapors (adsorbates) on solid or liquid (adsorbents) surfaces. 2.physisorption：Adsorption due to physical action.Evaporation Vacuum Coating Machine Factory 3.chemiso...

  • Common Vacuum Terminology5

    1.diffusion of gas：Gas moves in another medium due to concentration gradient. Medium can be another gas (diffusion in this case is called interdiffusion) or a condensable substance. 2.D diffusion coef...

  • Common Vacuum Terminology 4

    1.ψ collision rate：In a given time interval, the average number of collisions of a molecule (or other specified particles) relative to other gas molecules (or other specified particles) divided by tha...

  • Common Vacuum Terminology 3

    ranges of vacuum：The vacuum region is roughly divided as follows:                       Pa        Torr Low vacuum:            105～102         760～1 Medium vacuum:          102～10-1        1～10-3 Hi...

  • Common Vacuum Terminology 2

    1.Pa pascal：International unit of pressure, 1Pa = 1N/m2. 2.Torr torr：Unit of pressure, 1 Torr = 1/760 atm.China PVD Coating Systems suppliers atm standard atmosphere：Unit of pressure, 1atm=101325Pa。 3...

  • Common Vacuum Terminology1

    standard ambient condition：The temperature is 20℃, the relative humidity is 65%, and the atmospheric pressure is101325Pa=1013.25mbar=760Torr。PVD Coating Systems suppliers standard reference conditi...

  • A solid surface is bombarded with energetic particles

    sputtering deposition Basic Principles A solid surface is bombarded with energetic particles (usually positive ions accelerated by an electric field). Sputtering of atoms and molecules on solid surfac...

  • Vacuum evaporation plating

    Vacuum evaporation plating Basic Principles Vacuum evaporation coating is a method of heating the raw materials to form thin films in evaporation container in vacuum chamber to make atoms or molecules...

  • Common vacuum leak detection methods

    Common vacuum leak detection methods   High Frequency Spark Leak Detection   This method is only applicable toChina Multi-arc ion coating machine Supplier glass vacuum system. , the system ...

  • Vacuum meter leak detection method

    Vacuum meter leak detection method The readings of some vacuum gauges are related to the types of gases, such as thermocouples and ionization vacuum gauges. Choosing appropriate gas or liquid as leaka...

  • Common vacuum leak detection methods

    Vacuum Mud Sealing Detection Method Vacuum mud will be sealed one by one suspicious leak point, pay attention to the change of vacuum degree. If the vacuum degreeHard film vacuum coating machine Suppl...