Carbon Coaters | Vac Coat Desk Carbon Coaters

Carbon Coater | 6 Types of Desk Carbon Coaters

Desk Carbon Coaters

The process of carbon coating by thermal evaporation is a popular technique to coat a sample with a thin layer of carbon. Carbon coating applications vary from sample preparation for electron microscopy and structural analysis to research on the carbon-based coatings. Vac Coat offers carbon coaters and hybrid sputter and carbon coaters suitable for electron microscopy sample preparation and research purposes.

Carbon Coating Process

Carbon coating thermal evaporation process is based on whether the carbon source is a thread/fiber or rod, each requiring a separate carbon coating workflow. Thermal evaporation carbon coater operation is commonly carried out in Flash and Pulse modes.

Carbon Coating Modes

In the Flash mode a continuous high electrical current is passed through the carbon rod or fiber to evaporate and coat the sample, while in the Pulse mode, a declined current in pulses of low duration (1-2 seconds) is used to do the deposition. The resulting carbon layer thickness and uniformity depends on the carbon coating method used. The flash mode represents a short-term deposition, but using the pulse mode provides more control over the coating process.

Carbon Coating Systems Applications

Carbon coating for SEM sample preparation and EDX analysis is one of the most important usages of a carbon coating system. Thus, performing repeatable, reliable depositions is required to properly evaluate the results, which is made possible by Vac Coat full automatic carbon coating systems. The auto carbon coaters allow the user to repeat the same carbon coating process running the saved coating programs.

Vac Coat desk carbon coaters, DCR and DCT, are among the best carbon coaters, as noted by our customers. The low-vacuum DCR model is the economical version used for SEM sample preparation, whereas DCT is a high-vacuum turbo carbon coater, offering proper condition for more amorphous carbon layers, suitable for FESEM, EDX, and EBSD characterizations.

Vac Coat also manufactures complete carbon coating systems as DSCR and DSCT, which contain sputter coating system in addition to the thermal evaporation carbon coater. Also DSCR-300, DSCR with a larger chamber (300mm Dia.), is offered for long-term duration depositions. The DSCT model can be accompanied by a metal thermal evaporator, named as DSCT-T

These coaters can be supplied with diverse optional facilities like plasma cleaner (for plasma treatment of samples’ surface and TEM carbon grids), substrate heater, and various sample holder stages (rotating, planetary, different sizes). 

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