Specifications for InnerArmor Wear Resistant Coatings

InnerArmor technology is flexible and offers virtually unlimited coating possibilities which can be applied to a wide range of base materials. And the specifications are easily tailored to meet specific application requirements, providing hardness, wear resistance, corrosion control, erosion resistance, temperature resistance, whatever is needed…

For example, in corrosive or erosive environments, thicker films may be preferred. While high-precision, dimension-critical applications may require thinner films. Harder films can best stand up to high abrasion factors. While softer films may be selected when maximum ductility or pliability is needed.

InnerArmor coatings can provide all of the above. Plus, they can combine multiple coating layers to deliver unique and finely-tuned performance characteristics.

InnerArmor Corrosion Control Coating Specification

InnerArmor Corrosion Control is a multi-layer coating that protects against corrosive and aggressive media, including acids, salts and hydrogen sulfide (H2S). The specifications of InnerArmor corrosion control are as follows:

Table 1. InnerArmor corrosion control coating specification

Property

Environment

Hydrogen sulfide (H2S), hydrofluoric acid (HF), hydrochloric acid (HCl), nitric acid (HNO3), sulfuric acid (H2SO4), salt, methane (CH4), CO/CO2

Corrosion Resistance
18% HCl Test (submerged at 200°F for 8 hours):
Sour Autoclave Test (NACE TM 0185):
Salt Spray Test (ASTM B117 >500 hours):


No undercutting, passed 67.5 volts holiday test
No undercutting, passed 67.5 volts holiday test
No effect

Hardness

1200 HV / 12 GPa (1000–1500 HV, to suit application)

Young's Modulus (E-Modulus)

100 GPa (100–120 GPa)

Adhesion to Steel

Excellent

Coating Thickness

30–80 microns (to suit application)

Color

Grey-Black

Applicable Substrates

Carbon Steel, Stainless Steel, Inconel®718, Ti/Ti Alloys, Ni/Ni Alloys

Max Environment Temperature

Up to 752°F (400°C)

Deposition Rate

Typical > 0.6 micron/minute

Deposition Temperature

248°F – 392°F (120°C–200°C) (substrate dependent)

InnerArmor Sliding Wear Coating Specification

InnerArmor Sliding Wear Coating delivers wear resistance in wet, dry, oil, or drilling mud envi- ronments for applications such as reciprocating pistons and pumps. The specifications of InnerArmor sliding wear coatings are as follows:

Table 2. InnerArmor sliding wear coating specification

Property

Hard Coating

Ultra-Hard Coatings

Environment

Wet, Dry, Oil, Drilling Mud

Dry, Oil

Hardness

1200 HV / 12 GPa
(1000–1500 HV)

2500 HV / 25 GPa
(2000–3000HV)

Young's Modulus (E-Modulus)

100 GPa (100–120 GPa)

170 GPa (150–200 GPa)

Sliding Wear Rate
(25N load w/ WC sphere surface)

Typical 5.0E-07 mm3/Nm (Dry)

Typical 5.0E-07 mm3/Nm (Dry)

Coefficient of Friction

< 0.05 (Dry)

< 0.05 (Dry)

Coating Thickness

1–60 microns

1–60 microns

Color

Grey-Black

Grey-Black

Applicable Substrates

Carbon Steel, Stainless Steel, Al, Inconel®718, Ti/Ti Alloys, Ni/Ni Alloys

Carbon Steel, Stainless Steel, Inconel®718, Ti/Ti Alloys, Ni/Ni Alloys

Max Environment Temperature

Up to 752°F (400°C)

Up to 752°F (400°C)

Deposition Rate

Typical > 0.7 micron/minute

Typical > 0.5 micron/minute

Deposition Temperature

248°F – 392°F (120°C–200°C) (substrate dependent)

248°F – 392°F (120°C–200°C) (substrate dependent)

InnerArmor Abrasive Wear Specification

InnerArmor abrasive wear coating – protects against erosion wear in high velocity sand and other particle flow environments. The specifications of InnerArmor abrasive wear coatings are as follows:

Table 3. InnerArmor abrasive wear coating specification

Property

Abrasion Resistance: ASTM G65

Passed

Hardness

2000 HV / 20 GPa (1800–2200 HV, to suit application)

Young's Modulus (E-Modulus)

170 GPa (150–200 GPa)

Sliding Wear Rate
(25N load w/ WC sphere surface)

Typical 5.1E-07 mm3/Nm (Dry)

Coefficient of Friction
(25N load with WC sphere surface)

< 0.05 (Dry)

Adhesion to Steel

Excellent

Coating Thickness

50–80 microns (to suit application)

Color

Grey-Black

Applicable Substrates

Carbon Steel, Stainless Steel, Al, Inconel®718, Ti/Ti Alloys, Ni/Ni Alloys

Max Environment Temperature

Up to 752°F (400°C)

Deposition Rate

Typical > 0.4 micron/minute

Deposition Temperature

248°F – 392°F (120°C–200°C) (substrate dependent)

InnerArmor Erosion Wear Specification

InnerArmor Erosion Wear Coating – protects against erosion wear in high velocity sand and other particle flow environments. The specifications of InnerArmor Erosion Wear Coatings are as follows:

Table 4. InnerArmor erosion wear coating specification

Property

Erosion Resistance: ASTM G76

Passed, no erosion damage to surface

Hardness

2000 HV / 20 GPa (1800–2200 HV, to suit application)

Young's Modulus (E-Modulus)

170 GPa (between 150–200 GPa)

Sliding Wear Rate
(25N load w/ WC sphere surface)

Typical 5.1E-07 mm3/Nm (Dry)

Coefficient of Friction
(25N load with WC sphere surface)

< 0.05 (Dry)

Adhesion to Steel

Excellent

Coating Thickness

50–80 microns (to suit application)

Color

Grey-Black

Applicable Substrates

Carbon Steel, Stainless Steel, Al, Inconel®718, Ti/Ti Alloys, Ni/Ni Alloys

Max Environment Temperature

Up to 752°F (400°C)

Deposition Rate

Typical > 0.4 micron/minute

Deposition Temperature

248°F – 392°F (120°C–200°C) (substrate dependent)

InnerArmor Flex Wear Specification

InnerArmor Flex Wear Coating – protects flexible metals (e.g., aluminum) against wear and corrosion. The specifications of InnerArmor Flex Wear Coatings are as follows:

Table 5. InnerArmor flex wear coating specification

Property

Flexibility

Bendable to 120 degrees depending upon substrate thickness

Hardness

2000 HV / 20 GPa (1000–2500 HV, to suit application)

Young's Modulus (E-Modulus)

109 GPa (85–140 GPa)

Sliding Wear Rate
(25N load w/ WC sphere surface)

Typical 3.9E-07 mm3/Nm (Dry)

Coefficient of Friction
(25N load with WC sphere surface)

< 0.01 (Dry)

Adhesion to Steel Foil (0.01 inch thick)

15 Newton-scratch test

Coating Thickness

12 microns

Color

Grey-Black

Applicable Substrates

Stainless Steel, Aluminum, other conductive foils

Max Environment Temperature

Up to 752°F (400°C)

Deposition Rate

Typical > 0.4 micron/minute

Deposition Temperature

248°F – 392°F (120°C–200°C) (substrate dependent)

Custom Combinations of InnerArmor Coating

To address specific application requirements InnerArmor coatings can be designed to protect against a combination of wear, erosion, and/or corrosion. In addition, InnerArmor can employ near-frictionless diamond-like carbon coatings for improved part performance.

Applications of InnerArmor Coating

InnerArmor coatings have been successfully tested across many applications including:

  • Oil and gas applications – surface, subsea and downhole drilling, completion and production equipment
  • Automotive applications – pistons, valves, tappets, cylinders, cylinder liners
  • General applications – pump cylinders, gate valves, shut-off sleeves

Materials for InnerArmor Coating

InnerArmor coatings may be created out of virtually anything that can be ionized. The technology is capable of depositing carbon-based coatings, metals and oxides. And the coatings may be either conductive or non-conductive. Titanium nitride, tantalum carbide, chromium carbide, silicon carbide, silicon oxi-carbide and diamond-like carbon (DLC) films are but a few examples. Inner Armor can also be applied at very high deposition rates, compared to external plasma CVD methods, lowering processing costs.

This information has been sourced, reviewed and adapted from materials provided by Sub-One Technology - Pipe and Tube Coatings.

For more information on this source, please visit Sub-One Technology - Pipe and Tube Coatings.

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