DCT-300 Large Desk Turbo-Pumped Carbon Coater

DCT-300 Large Desk Turbo-Pumped Carbon Coater

The DCT-300 is a turbo-pumped carbon coater with a large chamber ideal for sample preparation for FE-SEM, EDS/WDS, TEM, EBSD analysis, and thin film applications. This high-vacuum coater offers high quality uniform carbon films with fine grain sizes which are suitable for specimens that require high-resolution and high-quality characterisation.


Vac Coat

Vac Coat Limited is a designer and manufacturer of high-quality tailor-made Physical Vapour Deposition (PVD) and Vacuum Coating Systems with excellent customer care and after sale services. Equipped with more than 25 years’ experience in the vacuum and Thin Film deposition technologies. Their research and development team supported by academic scientists and qualified engineers are highly active to develop new designs and meet special inquiries received from clients. Designed and manufactured components by Vac Coat's engineering team meets high-quality standards. Their vacuum coating systems have been sold to many universities and research centres through distributors worldwide with very good references and feedback.

Key Features

  • High vacuum level with built-in turbo pump 90 L/s (Leybold)
  • Two-stage rotary vane backing pump (diaphragm or scroll pump)
  • 500 W switching DC power supply for carbon fibre deposition
  • 1.2 kW high-current DC power supply for carbon rod deposition (Optional)
  • Quartz crystal thickness monitor with precision of 1 nm and resolution of 1 Å
  • Automatic venting valve
  • Sample rotation, height, and tilt adjustable (for small sample holder stage)
  • Planetary sample holder (optional)
  • Electronic shutter
  • Easy-to-change specimen stages (rotation stage as standard)
  • Two-year warranty
  • CE conformity
  • Intuitive touch screen to control the coating process and rapid data input
  • User friendly software, updatable via network
  • Semi-full automatic coating process (optional)
  • Repeatable and programmable coating process in the automatic mode
  • Pulsed or flash carbon fibre coating modes
  • Pulsed or ramped carbon rod coating modes (optional)
  • Automatic carbon fibre/rod deposition according to the set thickness value
  • Records and plots coating parameters graphs
  • Storing coating recipes for repeatable depositions


DCT-300 with a 300 mm Dia. cylindrical chamber allows long-term deposition on samples with a diameter of up to 15 cm or several small specimens. The full-automatic programmable carbon coating process allows easy, precise, and repeatable performance.

Carbon fibres (thread) or rods can be installed on separate chamber heads, as ordered by the customer, to coat the samples through different flash, pulsed or ramped modes (last mode available for carbon rod) in a manual or automatic deposition process.

Pulsed Carbon Fibre Evaporation

The desk vacuum carbon coater is able to perform pulsed carbon fibre evaporation. Short pulses provide more controlled deposition and significantly reduces the number of debris associated with traditional carbon deposition.

Carbon Rod Evaporation (optional)

The desk high vacuum carbon coater, DCT-300, could be equipped with carbon rod head (optional). For this case, an external 0-100 A high current power supply should be used instead of the internal high current power supply which is designed for carbon fibre evaporation.

Clean Vacuum

The vacuum chamber is Cylindrical Pyrex. The DCT-300 is fitted with an internally mounted 90 L/s turbo molecular pump, backed by a 6 m3/h two-stage rotary vane pump (optional). It introduces clean vacuum without oil contamination which normally exists with ordinary diffusion pump.

DCT-300 Touch Screen Control

DCT-300 is equipped with a 7” coloured touch screen with full automatic control utilising a user-friendly software to control and adjust the deposition process data. The vacuum and coating sequence information can be monitored as digital data or curves on the touch screen. The last 300 coatings information is saved on the history page and can be transferred to PC by a USB port on the device.

Sample Holder Stages of DCT-300

The DCT-300 can be equipped with different sample stage configurations depending on the user requirements. The sample stages are rotatable with adjustable height and angle and easy to change. The rotary planetary sample stage is a good choice for uniform coating of porous specimens (optional). For deposition on large samples, a 6-inch rotatable (no incline adjustable) sample holder stage is recommended (optional).  


  • Turbo molecular pump with different pumping speeds (Optional):

Pumping Speed

90 l/s

250 l/s

350 l/s

Ultimate Pressure




  • Max. power consumption: 2 kW
  • Real-time plots of coating parameters

Detailed Features

Dimensions 580 × 500 × 630 mm (H × W × D)
Weight 46 Kg
Vacuum Chamber Dimension Borosilicate Glass, 300 mm Dia × 200 mm High
Display Screen 7” Diagonal (16:9) 800 × 480 High Colour- Graphic TFT- LCD
Data Transfer USB Port – For Transferring the data and graph to PC
Carbon Fibre Carbon fiber thread diameter: 0.8 mm (Thicker fibre is not recommended)
Carbon Rod Carbon rod diameter: 3.2 mm
Sample Holders Dimensions 60 mm Dia. can contain: 11 × 9.6 mm stubs or 6 × 12.7 mm stubs or 5 × 19 mm stubs or 4 × 25 mm stubs. 150 mm Dia. sample holder for large substrates.
Chamber’s Base Stainless Steel with Turbo Pump, Thickness Gauge, Shutter, Pressure Gauge, Sample Holder Inlet port
Chamber’s Lead Made of Aluminium/SST- Carbon head: contains carbon fibre (thread)/rod holder.
Thickness Sensor Thickness Sensor
Specification Crystal thickness gauge with sensor, Silver coated crystal quartz, oscillator
Resolution ±1 Angstrom
Accuracy ±1 nanometre
Vacuum Equipment Vacuum Equipment
Turbo Molecular Pump Pumping Speed of 90, 250, or 350 L/s (optional) (Leybold)
Backing Pump Two-stage rotary vane/diaphragm pump/scroll pump
Pressure Gauge Leybold (Ionivac model); Full Range
Final Vacuum <8×10-6 Torr (Depends on the turbo pump speed)
Process Process
Carbon Coating Pulsed and Flash mode carbon fibre coating/ Pulsed or Ramped carbon rod coating
Service and other Information Service and other Information
Gas Argon or Nitrogen to purge the chamber (Optional)
Electric Power Supply HC: 24 V, 20 A (Carbon fibre evaporation)
HC: 12 V, 100 A (Carbon rod evaporation)
Control of Argon supply Electronic leak valve
Shutter 1 piece
Electrical Inlet Inlet: 220 - 240 V/ 8 - 10 A, 50/60 Hz; or 110 V, 10 - 12 A, 50/60 Hz


Fine grain structural deposition of carbon films for SEM, FE-SEM, EDX, and TEM sample preparation

Conductive layers

TEM grid plasma treatment for improved hydrophilicity (Optional)



DCT-300 Brochure

View Brochure


Head and power supply for carbon rod

Plasma rod and high voltage power supply for plasma treatment

Quartz crystal sensor

Planetary sample rotation

Spare cylindrical vacuum glass chamber

Carbon fibre

Sealing gaskets

Service Support

Comprehensive repairs and servicing

Annual Support Programs

Your metrology instrumentation is a major investment that is critical to your business operation and success. In today’s competitive climate, it is more important than ever to extend the functionality and peak performance of your metrology equipment years beyond the expiration of your factory warranty. CN Tech’s Support Programs will help ensure that your investment is protected, and that you and your instrument’s are always operating at peak performance.

With over 20 years’ experience servicing and repairing you can be assured that your system is in safe hands. The independent services we offer include system relocation, maintenance visits, parts and consumables, and break down interventions.

CN Tech’s Support Programs are an economical way to guarantee optimal working condition:

  • Annual Preventive Maintenance
  • Priority Technical Assistance
  • Preferred Parts Availability
  • On-Site User Training
  • Remote Diagnostics
  • No surprise repair expense and much more!

Support Contact Example

An example of our service and support contracts are shown below:


Metrology & Instrumentation Annual Support Programs 2022/23

CN Tech's Support Programs will help ensure that your investment is protected, and that you and your instrument’s are always operating at peak performance.

Get in touch to discuss your requirements

Make an enquiry

Download PDF

Please add 4 and 1.

Thank you

A download link has been sent to the e-mail address you provided.