Creator of Composite Diamond Coating®

Surface Technology, Inc. is the creator and technical leader of CDC - Composite Diamond Coating®, an exceptionally engineered coating of electroless nickel with fine diamond. The synergy of these materials makes CDC an exceptionally hard and wear resistant coating. CDC conforms to even the most complex geometries and is an excellent replacement for chrome plating. STI makes CDC available via coating services from its production facility as well as chemical products sold directly, through a network of distributors, and by agreement with licensees worldwide.

Contact STI for One-Plate® Electroless Nickel solutions, the simplest EN in the world. These One-Plate® systems use just one “Q” solution for both bath make-up and replenishment. This innovation by STI overcomes the many shortcomings of using three A, B, and C solutions. Available in low, medium, high phosphorous, and composite EN varieties. Naturally, all are RoHS compliant.”

NiSlip™ 515


The 515 system is a composite PTFE, mid-phosphorous, electroless nickel process designed to deposit a uniform composite with ultra-fine PTFE at an exceptionally high plating rate.

The 515 system features numerous important advantages for the plater:

  • Plating rate about 20 microns per hour  (dramatically higher than the conventional 7.5 microns per hour) 
  • Reduced processing time, labor and energy costs  
  • Increases productivity and  the opportunity for thicker EN-PTFE deposits  
  • Capable of operating at 70 degrees C and therefore capable of plating EN-PTFE on plastic at a rate of about 7.5 microns per hour.  
  • More than three metal turnovers achieved in STI plating tanks  
  • Consistent color throughout the bath's life   
  • Standard  20 - 25% PTFE content, with potential for higher 
  • Bath is more tolerant to agitation than standard EN-PTFE    
  • Waste treatment can be done according to standard methods.    
  • No lead and no cadmium    
  • Available with no PFOS    
  • Patent pending

Some advantages of the 515 system are deposits with low coefficient of friction, self-lubricity, and excellent release properties; as well as corrosion resistance comparable to conventional electroless nickel.

The 515 system electroless nickel processes meet or exceed MIL-C-26074D and AMS 2404C.

Typical Deposit Properties:

Coefficient of Static Friction 0.1
Coefficient of Dynamic Friction 0.08-0.10
PTFE Content 20-25%
Phosphorus Content 7-9% by wt.
o as plated 350 VHN100
o heat treated @ 250°C 450-500 VHN100
Salt Spray (ASTM-B-117) 100 hrs.
Stress almost none
Magnetic Properties slightly magnetic
Deposition rate 0.7-0.9 mil per hour

NiSlip™ 515 is a high speed process to produce a coating of submicron PTFE particles uniformly dispersed throughout a hard electroless nickel matrix. The plating rate is two to three times conventional EN-PTFE systems! The percentage of PTFE in the coating is typically 20-25% by volume, but can be varied depending on the requirements of each application. The coating features a medium phosphorous electroless nickel matrix that is useful in most applications. For more information on the breakthrough speed of the NiSlipTM 515 process click here.

NiSlip™515 provides numerous benefits including:

  • Self-lubricity/low coefficient of friction
  • Excellent release properties
  • Outstanding corrosion resistance
  • Perfect conformity to complex geometries
  • Coverage of entire services or selected critical areas
  • Applicability to many common metals, alloys, ceramics, and plastics
  • PFOS free

These features reduce sliding wear and sticking problems.  The performance advantages of NiSlip™ 515 have been utilized widely in the automotive, molding, textile, gear, and assembly industries to name just a few. In applications requiring even higher corrosion resistance, the high phosphorous version of this coating, NiSlip™ 520, is recommended.

NiSlip™ 515 has received a positive review from the U.S. Food and Drug Administration (FDA) Department of Health and Human Services.  Click here for details.

The NiSlip™ 515 technology is available from STI:

  • As a coating service from STI’s production facility onto your parts, and
  • In chemical products from STI for customers to use in their own facilities. Click this link for further information on these chemical products - NiSlip™ 515 Chemical Solutions
These chemical components are formulated for maximum reliability, convenience, and economy; and are backed up by STI’s first hand practical knowledge of their operation.  May be covered by one or more of the following United States Patents No. 4,997,686, 5,145,517, 5,300,330, 5,863,616, 6,306,466, 7,744,685 and 8,147,601.

A Leader
in the Metal Finishing Industry