High Vacuum Turbo Carbon Coater, Cressington 208C

The 208C High Vacuum Turbo Carbon Coater from Cressington offers high quality carbon coating techniques for TEM, STEM, SEM, EDS/WDS, EBSD and microprobe applications. The compact, turbo pumped system requires only a standard power outlet and occupies minimal bench top space. The practical chamber size of 150mm diameter allows for rapid pump down and coating cycle times of around 10 minutes. The use of ultra purity carbon rods in a high vacuum chamber gives the high quality coating needed for critical TEM, EBSD, high resolution SEM and microprobe work.

Optional Accessories for the 208C:

Rotary-Tilting stage for coating large samples like microscope slides for carbon support films
Rotary-Planetary-Tilting stage for multiple sample coating for SEM, EDS/WDS and EBSD applications and/or enhanced uniformity
MTM-10 thickness monitor unit for precise and reproducible coating thickness

Main Features of the 208C:

Voltage controlled rod source gives multiple evaporation capabilities
Feedback loop enables precise and consistent coating thickness
Choice of operation methods for optimized operation
Automatic evaporation control gives ease of use in busy environments
Low cost, high resolution thickness monitor ensures reproducible results
67 ltr/sec turbo pump on a 150mm outer diameter chamber gives rapid pumpdown
Optional Dry Scroll Pump available
Reduces operating cost in several ways:

No need for water cooling
No need for warm up or cool down
No need for LN2 (dry nitrogen gas optional)
Short cycle time
Space saving, compact bench top design

Carbon Evaporation Supply

The 208C uses a unique fully integrated electronic feedback-controlled power design for the rod fed Bradley type carbon evaporation source. Current and voltage are monitored by sensor wires in the evaporation head where the evaporation source is part of the feedback loop. This feature gives the conventional rod fed carbon source unusual stability and reproducibility. The carbon source uses two-step ultra pure carbon rods. The evaporation source can be operated in manual "pulse" or manual "continuous" modes. The pulsed mode, when used in conjunction with the optional MTM-10 high resolution thickness monitor, gives absolute control over the desired thickness of the carbon coating. The automatic mode lets the user set the voltage and time, which together with the two-step rods gives consistent coating combined with ease of operation.

MTM-10 Thickness Monitor

The 208C Carbon Coater can be fitted with an optional MTM-10 Thickness Measurement System. Resolution is better than 0.1nm for carbon. Careful use of the monitor and evaporation controller gives better reproducibility of coating thickness.

MTM-10 Thickness Monitor

Rotary-Planetary-Tilting & Rotary-Tilting Stages

The modular design of this practical-size chamber accepts two optional stages, Rotary-Planetary-Tilting & Rotary-Tilting Stages, which can be readily implemented. With the addition of one of these stages, the telescopic pillar gives a simple, rapid adjustment from long to short working distances to change the deposition rate. For SEM, EDS/WDS and microprobe analysis applications, the Rotary-Planetary-Tilting stage with variable speed, adjustable tilt and 4 specimen holders ensures uniform coating on multiple samples. The Rotary-Tilting stage is specifically designed for TEM and analytical applications and holds a 25 x 75mm (1 x 3") glass slide. Both stages are mounted on a mounting collar and can be readily implemented in the chamber.


Optional Rotary-Planetary-Tilting (RPT) Stage (#9524) demonstrating variable speed settings and adjustable tilt. Shown with MTM crystal monitor installed, also optional.	Optional Rotary-Tilting (RT) Stage (#9660)

NEW Larger Diameter Stationary Stage

The standard stage included with the 208C is 63mm diameter and height adjustable. An optional 83mm diameter stage is available to assist in accommodating multiple samples such as three 1 x 3" glass slides, or two slides with the addition of the MTM-10 Thickness Monitor. Slides will be over the edge slightly. This sample table also has spaces for 23 x 1/2" diameter pin mounts and comes including a M6 x 80mm threaded rod with two nuts.

Note that when coating a larger surface area, a longer working distance is needed to more evenly coat the sample. Working at longer distances decreases the deposition rate, which is beneficial when trying to achieve thinner coatings, but makes achieving thicker coatings more challenging.

Larger 83mm Diameter Stationary Stage

Ordering Information

208C Carbon Coater

Prod #

Description

Unit