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.

AddPlate® and NiPlate™ 777


The 777 system is a composite silicon carbide - electroless nickel process designed to deposit a uniform composite nickel-phosphorous alloy with ultra-fine silicon carbide particles onto a great variety of metals, alloys, and non-conductors.  The resulting coating has a uniform frictional surface.

The 777 system is available in two packaging options to best meet your needs. The NiPLATE™ option provides the greatest convenience to the user, while the ADDPLATE® option provides the greatest economy for shipping and use. Both options produce the same properties and quality.

  • The NiPLATE™ 777 option is supplied in four liquid concentrates: NiPLATE™ 777 A, 777 B, and 777 D are used for make-up, and NiPLATE™ 777 A, 777 C, and 777 D are used for replenishment.
  • The ADDPLATE® 777 option is supplied in three liquid concentrates: ADDPLATE® 777 M is used for bath make up with NiPLATE™ 777 D and standard nickel sulfate and sodium hypophosphite commodities, and ADDPLATE™ 777 R is used for replenishment of the bath with NiPLATE™ 777 D and the same standard nickel sulfate and sodium hypophosphite commodities.

Some advantages of the 777 system are:

  • Deposits with frictional surfaces
  • Corrosion resistance
  • High plating rate
  • Excellent stability and bath life
  • Self-adjusting bath pH
  • Ease of use comparable to conventional electroless nickel

The 777 system electroless nickel processes meet or exceed MIL-C-26074D and AMS 2404C.

Typical Deposit Properties:

Phosphorous Content

6-9% by wt.



o as plated

550 VHN100

o heat treated @ 400°C for 1 hr.

1040 VHN100

Salt Spray (ASTM-B-117)

100 hrs.


slightly tensile

Magnetic Properties

slightly magnetic

Deposition rate

0.6 - 0.8 mil per hour

Preferred Operating Conditions:




Solution Temperature

83°- 90°C (180°-198°F)


Solution pH

4.6 - 5.0


Bath Loading

0.3 - 0.7 ft2/gal

0.5 ft2/gal

Nickel Metal Concentration

0.80 - 1.05 oz/gal

0.95 oz/gal

H2PO2 Concentration

5.0 - 5.5 oz/gal

5.3 oz/gal


Mechanical or Filtered Air


Consult a Surface Technology, Inc. Sales or Technical Service Representative for further information about this or any of our products and services. 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