diamond chrome plating on slew bearing

Armoloy Coatings

XADC® Diamond Chrome Plating

Nodular Chromium Coating with Nano-Diamond Co-Deposit

diamond coating

See the Diamond Chrome Difference

Armoloy's Diamond Chrome Plating (XADC) takes all the advantages of traditional Armoloy TDC and incorporates a co-deposit of synthetic diamonds in a proprietary electroplating technique. This results in a micronodular, crack-free surface texture that provides a hard, uniform metallic chrome-clad surface capable of withstanding the most aggressive wear applications.
The enhancement of nano-diamonds, when added to an already high-performing nodular TDC, offers additional wear protection and advanced thermal properties. Even in the presence of complex configurations, diamond chrome ensures that part tolerances remain intact without the need for post-machining while providing simultaneous multi-valued protection attributes.
diamond in the rough like diamond chrome plating

Diamond Grade Surface Engineering

The Armoloy Corporation helps global manufacturers protect their most valuable, high-precision components with our premium functional coatings.

Armoloy offers two unique surface textures, (Micro Nodular / Micro Cracked) each meticulously designed to cater to your specific application needs. We engineer tailored benefits through texture versatility and co-deposits to optimize your component’s performance, effectively preventing metal failures and enhancing machine and output efficiency. Diamond Chrome XADC is one of Armoloy’s preferred solutions for manufacturers worldwide. By mitigating wear and corrosion and enhancing lubricity, our precision chromium coatings strengthen metal surfaces for various applications, extending their lifespan and improving operational consistency.

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Armoloy South Africa coated automated grip robot for food processing line

Performance Characteristics

Diamond Chrome Plating by the Numbers

  • Surface hardness up to 78Rc
  • 10% – 67% reduction in coefficient of friction
  • Corrosion resistance tested to AMS 2438 per ASTM B-117
  • Wear resistance less than 1.2 TWI per AMS 2438
  • Low processing temperature <150°F (<65°C)
  • Typical deposit range of .0001 to .0003″ (2.54 to 7.62 µm)
  • Effective deposit range of .000050” to .0007” (1.27 to 17.78 µm)
  • Withstands temperatures as high as 1600°F (-240°C – 870°C)
  • Thermal expansion range of 2.7 – 4.6 (10 ̄6/°F)

Diamond Chrome Plating Highlights

  • Nano-diamond technology
  • High wear resistance
  • Exceptional hardness
  • Excellent thermal conductivity
  • Low coefficient of friction
  • Promotes lower operating temperatures
  • Absolute adhesion to substrate
  • Withstands extreme temperatures

Proven applications

Applying diamond chrome plating can improve the long-term performance of applications within the following industries, as well as many others:

Test Methods used to Certify Coatings

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Diamond Chrome Plating Features & Benefits

Co-deposited nano-diamonds

Exceptional hardness and wear resistance

Micronodular surface

Minimizes opposing surface contact, dramatically reduces friction, improves release characteristics

High wear resistance

Exceptional for glass-filled molding and high-speed bearings

Low processing temperature <150°F

Eliminates annealing and will not distort the base metal

No sharp edge buildup

Minimizes dimensional change

Chemical resistance

Stable in acids, alkalis, solvents and gasses

Anti-galling characteristics

Excellent resistance to adhesive wear, enhanced tolerance of low-lube

Thermal conduction

Produces lower temperatures in extreme heat applications – lowering friction and enhancing wear resistance

Absolute adhesion

Will not chip, flake, or peel from the substrate

Pure metallic non-toxic chromium coating

USDA approved coating and FDA compliant, nontoxic (USP tested, REACH compliant, RoHS compliant), Bio-compatible surface

Thin, precise deposits

Does not require post plate machining. Will not affect part tolerances or balance

Lubrication retention

Nodular surface retains dry and wet lubricants

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The Science Behind Diamond Chrome Plating

For industries with particularly high-wear applications, diamond chrome plating provides a superior option to alternative metal surface treatments. Similar to our traditional Armoloy TDC treatment, diamond chrome plating offers a hard and dense, yet thin chromium coating with a micronodular surface texture. The primary difference, however is that the co-deposited nano diamonds allow for increased thermal conduction that provides 20% higher cooling capabilities.

Additionally, with its advanced hardness and wear resistance, Armoloy’s Diamond Chrome Plating XADC works as an application for nearly every common manufacturing steel. You can also expect absolute adhesion that will not chip, peel, or flake from the substrate—as well as increased corrosion resistance.

Additional Metal Treatments

Explore All Products
TDC
nut and bolt
Armoloy Electrolizing microcracked thin dense chrome on surface at 500 magnification
Microcracked Thin Dense Chrome
Microcracked Thin Dense Chrome
Microcracked thin dense chrome plating offers a proprietary chemistry of pure chromium that increases both hardness and wear resistance.
TDC
nut and bolt
armoloy biprotec nickel chrome plating on surface x500
Hybrid Coatings (Bi-Protec)
Hybrid Coatings (Bi-Protec)
Bi-Protec Nickel Chrome Plating—a combination of our high phosphorus electroless nickel coating with an overlay of Armoloy TDC® or XADC®. Bi-Protec's additional layer provides the best combination of wear and corrosion protection.
TDC
nut and bolt
nodular thin dense chrome on surface seen at x500
Nodular Thin Dense Chrome
Nodular Thin Dense Chrome
Our thin dense chrome plating reduces the wear, friction and corrosion of components with a nodular finish.
TDC
nut and bolt
electrolizing microcracked thin dense chrome and medical coating me-92
ME-92 Biocompatible Chromium
ME-92 Biocompatible Chromium
Biocompatible chromium medical coating, known as ME-92, brings high-precision medical industry solutions throughout the world.
TDC
nut and bolt
plating aluminum with alcoat at x500
Microcracked Thin Dense Chrome For Aluminum
Microcracked Thin Dense Chrome For Aluminum
AL-COAT ensures premium protection for aluminum alloys by providing a high-chromium coating that is also both dense and non-magnetic.
Nickel
nut and bolt
electroless nickel coating from armoloy on metal surface at x500
Mid-phos Electroless Nickel Coating
Mid-phos Electroless Nickel Coating
For intricate applications susceptible to corrosion, our mid-phosphorus Electroless Nickel coating offers precise, uniform coverage for long-lasting preservation.
Nickel
nut and bolt
electroless nickel coating and nickel plating at x2000
High-phos Electroless Nickel Plating
High-phos Electroless Nickel Plating
Armoloy's High Phosphorus Electroless Nickel plating offers great corrosion resistance for components operating in acidic environments.
Nickel
nut and bolt
nickel teflon® on surface at x500
Nickel Teflon – Nyflon
Nickel Teflon – Nyflon
A co-deposit of electroless nickel and PTFE (Teflon®), Nyflon is the gold-standard for applications requiring increased corrosion resistance, hardness, and lubrication.
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Services at Armoloy

The Armoloy Corporation is here to provide support for your project, starting from the discovery phase and continuing through a successful production launch. Whether coatings are considered during the initial part design phase or become necessary due to product failures in the field, our team can assist you at any stage in the process.

Research & Development
Fully equipped R&D plating lab for test runs, prototyping, and continual development of our plating technologies. Our turnkey approach ensures high-quality outcomes for your project.
ASTM testing for wear
Process Development & Validation
Support from design to product launch with coating selection, prototyping, testing, PPAP validation, and plating production on any scale. We also support a range of ASTM and AMS test methods with a NADCAP-certified laboratory. 
Fulfillment
Armoloy ensures the development of a robust plating process that can be distributed to one of our 15 plating facilities. We’ll handle prototyping, process validation, and much more.

How Metals Fail

Contact Armoloy

Some of the most common metal failures include:

Armoloy’s different metal coating solutions help industries avoid costly metal failures and unplanned downtime.

Galvanic corrosion of metal washer
Galvanic Corrosion
abrasive wear and abrasive metal failure of metal bearing
Abrasive Wear
rolling contact fatigue on train rail
Rolling Contact Fatigue
erosion corrosion and erosive wear metal failure of piping due to lack of nickel chrome plating
Erosion-Corrosion
erosive wear erosion on solid surface
Erosive Wear
cavitation damage shown on metal coupon
Cavitation
pitting corrosion on worn metal plate
Pitting Corrosion
uniform corrosion in the form of rust on old water pipes
Uniform Corrosion
Friction
prevent overheating metal failure in rail bearings
Overheating
plating aluminum improving chemical resistance
Chemical Resistance
corrosive wear seen on weathered gear and cog
Corrosive Wear

Frequently Asked Questions

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Improve metal surface performance to its highest pinnacle. Meet our group of curious, innovative engineers and learn how we can help improve your industry with science-based solutions.

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