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Evaporation with Carbon Rods versus Carbon Fibers

208C High Vacuum Turbo Carbon Coater

for TEM, Microprobe, FESEM and EBSD


208C High Vacuum Turbo Carbon Coater, standard configuration, shown with optional Thickness Monitor MTM-10

<cressington high vacuum carbon coater
208C High Vacuum Turbo Carbon Coater with optional Rotary-Planetary-Tilting Stage,
Thickness Monitor MTM-10, Metal Evaporation Accessory and Auxiliary Power Supply

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. The modular design permits rapid change between a variety of applications with optimized conditions. Optional accessories for the 208C are:

  • Metal evaporation module for shadowing techniques can be mounted adjacent to the carbon source
  • Dedicated EM aperture cleaning head
  • Glow discharge head for cleaning TEM grids
  • Auxiliary Power Unit to drive the Metal Evaporation, Aperture cleaning and Glow Discharge accessories
  • Rotary-Tilting stage for TEM shadowing techniques or 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
  • 80 ltr/sec turbo pump on a 150mm diameter chamber gives rapid pumpdown
  • Optional Dry Scroll Pump available
  • Reduces operating cost in several ways:
  1. No need for water cooling
  2. No need for warm up or cool down
  3. No need for LN2 (dry nitrogen gas optional)
  4. Short cycle time
  5. 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.

208C Specimen Chamber and Optional Special Stages

The modular design of this practical-size chamber accepts a range of attachments, which can be readily implemented. The telescopic pillar gives a simple, rapid adjustment from long to short working distances to change the evaporation rate. The unique optional HIGH-VAC / LOW-VAC pressure adjustment system utilizes a precision needle valve. HIGH-VAC is used for highest quality carbon films such as for TEM applications. LOW-VAC is used for Glow Discharge cleaning of TEM grids. 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 either 25 x 75mm (1" x 3") glass slide, 7 standard 12.7mm pin stubs or 3 sample holders. Both stages are mounted on a mounting collar and can be readily implemented in the chamber.

rotary-planetary-tilting stage with adjustable tilt (optional)


Rotary-Tilting Stage

 

hign vacuum turbo carbon coater
208C High Vacuum Turbo Carbon Coater, showing location of the Rotary Pump
auxiliary power unit metal evaporation plate glow discharge unit
208 Auxiliary Power Unit (APU)
Prod. No. 9640
Glow Discharge Unit
Prod. No. 9625
Metal Evaporation Head
Prod. No. 9650

Ordering Information

Prod # Description Unit Price Order / Quote
9620 208C High Vacuum Turbo Carbon Coater, 115V* each P.O.R.
Qty:
9620-220 208C High Vacuum Turbo Carbon Coater, 220V* each P.O.R.
Qty:
9624 208C High Vacuum Turbo Carbon Coater, Dry Pumping System, 115V, 50/60Hz each P.O.R.
Qty:
9624-220 208C High Vacuum Turbo Carbon Coater, Dry Pumping System, 220V, 50/60Hz each P.O.R.
Qty:
Options and Accessories for 208C
9640 Auxiliary Power Unit for Accessories, 115V each P.O.R.
Qty:
9640-220 Auxiliary Power Unit for Accessories, 220V each P.O.R.
Qty:
9650 Metal Evaporation Accessory (requires 9640 or 9640-220) each 2250.00
Qty:
9650 includes: Mounting flange, vacuum safety switch, manual shutter and filaments.
9625 Glow Discharge Accessory, (requires 9640 or 9640-220) each 2150.00
Qty:
9625 includes: Accessory top-plate with HT feedthrough, vacuum safety switch, cathode and sample table.
9626 Aperture Cleaning Accessory (requires 9640 or 9640-220) each 2180.00
Qty:
9626 includes: Accessory top-plate with LT feedthrough, vacuum safety switch, filament holder with clamps.
9622 MTM-10 Thickness Monitor System for Standard Table, 115V each 2095.00
Qty:
9622-220 MTM-10 Thickness Monitor System for Standard Table, 220V each 2095.00
Qty:
9623 MTM-10 Thickness Monitor System for RT/RPT Table, 115V each 2195.00
Qty:
9623-220 MTM-10 Thickness Monitor System for RT/RPT Table, 220V each 2195.00
Qty:

Specifications for the 208C High Vacuum Turbo Carbon Coater
Specifications for the Auxiliary Power Unit and Accessories
Rotary-Planetary-Tilting and Rotary-Tilting Stages
Spares and Consumables for 208 Series Coaters
MTM-10 Thickness Monitor System

Carbon Rod ShaperPELCO easiShaper™, Motorized Carbon Rod Shaper

* The High Vacuum Turbo Coater includes: Microprocessor based, feedback controlled power supply with vacuum safety interlock; Automatic and manual evaporation control; Digital timer/voltage setting display; Analog vacuum and Amps display; Fully integrated all-metal vacuum pumping system with 80 l/sec. turbo pump on ISO 63 flange and a 3 or 2.5 cu. m/hr. rotary pump, mounted on an anti-vibration table, stainless steel flexible vacuum hose and QF16 connection system; High/low vacuum metering system; Precision needle valve with switched “no leak” mode; Glass chamber: 150mm dia. x 150mm H; Telescoping top plate support; Rapid source offset adjustment; Operation manual.

Ted Pella, Inc has been an authorized distributor for the complete range of Cressington vacuum coating systems for over 15 years. Cressington Scientific Instruments Ltd, based in Watford, UK develops, designs and manufactures vacuum coating systems for scanning electron microscopy (SEM), transmission electron microscopy (TEM) specimen preparation and thin film research applications. Core competencies of Cressington are vacuum technology, DC magnetron sputtering technology, electron beam evaporation technology for EM, cryo technology for EM and thermal evaporation. The Cressington products range comprises 108 series sputter coaters for standard SEM sample coating, the 108 series carbon coaters for standard EDX coating, the 208HR for field emission SEM (FESEM) sample coating, the 208C high vacuum turbo carbon coater for TEM/EBSD/microprobe carbon coating and the 328UHR and 328EB-Carbon for ultra high resolution sample coating. The 308R vacuum coating system for thin film applications is based on a compact versatile advanced pumping station which accommodates sputtering, thermal evaporation and electron beam evaporation all in a 12" light weight stainless steel chamber. Cressington takes pride in building products which have excellent quality, are compact bench-top systems and are easy to use.