Nickel Chrome Hybrid Plating

The Armoloy Bi-Protec® nickel chrome plating process is an innovative hybrid technique that combines the hardness of chromium with the high corrosion resistance of high phosphorus electroless nickel to produce a resilient and versatile surface on metal components. This thin but robust layer ensures that the component's specifications and tolerance thresholds are preserved, even when managing complex shapes, without the need for additional machining. At the same time, it bestows one of the best combinations of wear and corrosion protection Armoloy has to offer.

Armoloy offers two unique surface textures (micro nodular / micro crack), tailored to cater to your specific needs. Our dedicated team of engineers performs an in-depth evaluation for every application, allowing them to marry the strengths of both chromium and nickel in the coating process. This approach not only maximizes the potential of your component but also proactively wards off metal deficiencies, amplifying machinery efficiency and production output.

Providing Wear and Corrosion Protection

Armoloy helps manufacturers safeguard their high-precision metal components with a premium lineup of precision coatings.

Armoloy’s team of engineers conduct rigorous evaluations to determine the most appropriate texture and co-deposit for each application. This technical approach ensures that metal components are not only safeguarded from potential failures but also optimized for operational performance and longevity. The introduction of Bi-Protec® as a hybrid solution marks a significant step forward in the realm of metal component coatings, providing a technically advanced solution for corrosion and wear resistance challenges.

Explore Bi-Protec further

Armoloy Bi-Protec A Highlights

Thin dense chrome with high phosphorus electroless nickel
Balanced combination of wear and corrosion resistance
Effectively bonds to aluminum components
Broad effective temperature range
Complete coverage over complex geometries
Silver satin appearance
Enhanced release properties
Mitigates galling and fretting

Armoloy Bi-Protec X Highlights

Diamond chrome with high phosphorus electroless nickel
Optimal combination of wear and corrosion protection
High hardness for the most abrasive applications
Effectively adheres to aluminum substrates
Resists galvanic activity
Rivals 440C stainless steel with the ability to withstand oxidation
Thermally conductive
Broad effective temperature range
Mitigates galling and fretting
Improves lubricity

Proven applications

Applying Bi-Protec® can improve the long-term performance of all the following industry-specific applications.

AMS 2403 testing methodology nickel coating salt spray sample

Performance Characteristics

Bi-Protec by the Numbers

Electroless nickel thickness of .0002/.003′′ (5.08/76.2 µm)
.0001/.0005′′ (2.54/12.7 µm) deposit of thin dense chromium
Surface hardness up to 78Rc
Corrosion resistance tested per ASTM B-117
.0035″ (88.9 µm) max deposit
< 190°F (<88°C) processing temperature
800°F (427°C) max working temperature
Wear resistance less than 1.2 TWI

Bi-Protec Features & Benefits

Nickel-chromium hybrid

Combines extreme corrosion resistance of nickel and proven wear advantages of Armoloy TDC

Heavier deposits available

Corrects undersized tools

Double-layered protection

Beneficial for extreme corrosive/wear operating environments

Plating on aluminum

Ability to apply NTDC to aluminum by first coating with a thin layer of nickel

Low processing temperature

Will not distort base material. Eliminates annealing

Chemical resistance

Stable in alkalis, solvents, acids and gasses

Wide range of materials

Compatible with nearly all base metals

Lasting aesthetic appeal

Gives components a matte finish that won’t easily fade over time

Great adhesion

Will not flake, crack, or separate from the base material

Lubrication retention

Nodular surface retains wet and dry lubricants

Galling protection

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

No sharp edge buildup

Minimizes dimensional changes to base material

Additional Metal Treatments

Explore All Products

TDC

Nodular Thin Dense Chrome

Our thin dense chrome plating reduces the wear, friction and corrosion of components with a nodular finish.

TDC

Microcracked Thin Dense Chrome

Microcracked thin dense chrome plating offers a proprietary chemistry of pure chromium that increases both hardness and wear resistance.

TDC

Diamond Chrome Plating

For applications with particularly high wear rates, Diamond Chrome Plating XADC provides an exceptional option to alternative metal surface treatments.

TDC

ME-92 Biocompatible Chromium

Biocompatible chromium medical coating, known as ME-92, brings high-precision medical industry solutions throughout the world.

TDC

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

Mid Phosphorus Electroless Nickel Coating

For intricate applications susceptible to corrosion, our mid-phosphorus Electroless Nickel coating offers precise, uniform coverage for long-lasting preservation.

Nickel

High-phos Electroless Nickel Plating

Armoloy's High Phosphorus Electroless Nickel plating offers great corrosion resistance for components operating in acidic environments.

Nickel

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.

Why Partner with Armoloy?

Armoloy supports your project from concept to production with surface engineering expertise built around real-world performance needs. Whether you are designing a new component or solving a failure in the field, our team can help identify the right coating solution, validate its performance, and support a successful production launch.