DCD Coatings - Dynamic Compound Deposition

What is DCD coating?
Dynamic Compound Deposition (DCD) is a proprietary low temperature coating process that synthesizes dry-film lubricants and wear resistant coating compositions.  DCD is based on the principle of in situ mechanical activation and chemical transformation, and leads to considerably decreased friction coefficients and increased durability of the coating layers.  Due to the specific conditions of synthesis, DCD coatings develop micro- and macro-structures that are well adapted for conditions of severe contact loading.  For this reason, the DCD process is primarily suited to anti-friction, slide-wear, and high-load applications. 

Characteristics of the DCD Process:
  • Low temperature process (< 100°F)
  • Low Coefficient of Friction (0.1 or less)
  • Thin-film layers (.001-.005 mm.)
  • Suitable for tight tolerances (+/-.0001)
  • Deposits well onto most substrates
  • No post-coating processing required
  • Does not dramatically affect surface finish
  • No significant geometry limitations

The standard DCD coatings currently offered by Richter Precision Inc. are as follows:
DCD - Standard Coating Data
Name Composition Thickness  (microns) Micro-
hardness
(HV)
Coefficient
of Friction
Oxidation Temp. Max. Working Temp. Process Temp.
Tribo-KoteS (Mo, W) S2 0.5-1.0 Solid Lubricant 0.08 - 0.1 500-600°C 600°C 100°F / 38°C
Tribo-Kote S2 SiC /
(Mo, W) S2
1-5 1000-1500 0.1 500-600°C 300°C 100°F / 38°C
Tribo-Kote S3 SiC / C-DLC 1-5 1500-3000 0.1 T>400°C 400°C 100°F / 38°C
Tribo-KoteS4 Carbon DLC 0.1-3.0 1500 - 2000 0.1 T>400°C 400°C 100°F / 38°C


DCD "Combination" Coatings for Stamping & Forming Applications

While our Tribo-Kote™ line of coatings work well in tribological applications, we have also had very good success using DCD coatings in conjunction with various PVD, CVD and TD coating compositions.  These combinations have been particularly effective in stamping and forming applications.

DCD coatings develop micro- and macro-structures that are ideally suited for the conditions of severe contact loading often associated with stamping and forming applications.  When a DCD coating is combined with a PVD, CVD or TD coating, you get the wear and abrasion protection of the base coating combined with the extremely low coefficient of friction of the DCD dry-film lubricant layer.  This creates a very potent combination, and can greatly improve tool life and performance in most stamping and forming applications.

PVD, CVD and TD coatings all have a surface morphology ideally suited for DCD deposition.  As it deposits onto the surface of these coatings, the DCD coating fills the micro-porosity and micro-depressions of the base films.  The dry-film lubricant DCD layers that remain in these “low-lying” areas of the base PVD, CVD or TD coating dramatically improves the overall wear characteristics of the coating.

The standard DCD “combination” coatings currently offered by Richter Precision Inc. are as follows:
DCD "Combination" Processes - Coating Data
Name Composition Thickness  (microns) Micro-
hardness
(HV)
Coefficient
of Friction
Oxidation Temp. Max. Working Temp. Process
Temp.
TitankoteC3+S CrN/CrC/
(Mo, W) S2
3-7 2000-2200 0.15 550°C 600°C 375°C / 700°F
TitankoteC6+S AlTiN /
(Mo, W) S2
3-7 3000-3400 0.15 660°C 300°C 375°C / 700°F
Titankote H+S TiC /
(Mo, W) S2
4-12 3200-3400 0.15 440°C 400°C 1050°C / 1925°F
TDKote+S VC /
(Mo, W) S2
4-12 3400-3800 0.15 N/A 400°C 1050°C / 1925°F

Titankote™ C3+S [CrN/CrC/(Mo,W)S2]
This coating has good hardness, corrosion resistance, and a high resistance to cracking & chipping. The (Mo, W)S2 dry-film lubricant layer and this coating's natural ductility make it a good choice for metal-forming applications when forming non-ferrous materials, such as aluminum and titanium alloys. PVD processes such as this one should only be used in metal-forming applications when substrates and/or tool tolerances do not allow for either CVD or TD.

Titankote™ C6+S [AlTiN/(Mo, W)S2]
A great combination coating: the high micro-hardness of the AlTiN layer, combined with the (Mo, W)S2 dry-film lubricant layer of this coating make it a good choice for many metal-forming applications, especially when under high contact loads. PVD processes such as this one should only be used in metal-forming applications when substrates and/or tool tolerances do not allow for either CVD or TD.

Titankote™ H+S [TiC/(Mo, W)S2]
This coating has excellent adhesion characteristics that make it a great choice for heavy load applications like metal-forming, stamping, extrusion, and cold-heading. The TiC CVD layer has extremely strong bond strength and provides excellent abrasion resistance. The (Mo, W)S2 dry-film lubricant layer greatly reduces the friction between tooling and work piece, reduces pick-up of material (adhesive wear/galling), and improves the release properties of mold and die cavities. This coating works well in forming most materials.

TDkote™+S [VC-NbC/(Mo, W)S2]
This coating provides increased performance for heavy load applications like metal-forming, extrusion, and cold-heading. The (Mo, W)S2 dry-film lubricant layer of this coating greatly reduces the friction between tooling and work piece, reduces pick-up of material, and improves the release properties. When the tooling substrate and the tolerances allow, this coating works well in forming most materials, especially stainless steels.


Since every customer’s application is different, we invite you to contact Richter Precision Inc. for more information.  Our experienced sales representatives would be pleased to help you make the appropriate coating selection for your particular requirements.
Main Office: 1021 Commercial Ave. - P.O.Box 159 - East Petersburg, PA 17520 USA | Phone: (717) 560-9990 | Fax: (717) 560-8741 |
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