Zinc Thermal
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Zinc Thermal Diffusion
Advanced Protection Through Zinc-Iron Alloy Coating
Zinc Thermal Diffusion is a cutting-edge surface treatment technology designed to deliver exceptional corrosion
resistance and durability. Through a high-temperature diffusion process, a zinc-iron alloy layer is formed directly on the
surface of the metal, creating a metallurgically bonded coating that will not flake, chip, or peel — even under extreme
conditions.
Unlike traditional electroplating or hot-dip galvanizing, Zinc Thermal Diffusion is a completely dry and eco-friendly
process. It eliminates the need for liquid baths or chemical waste, making it both environmentally sustainable and
operator safe. The result is a uniform, matte-grey finish with superior protection against corrosion, wear, and abrasion.
This technology is widely used in automotive, construction, defense, and industrial applications, particularly for
components that must withstand harsh outdoor or chemical environments.
Renowned brands like ArmorGalv® by Distek have perfected this process, offering a proven alternative to traditional
coatings with longer service life, reduced maintenance, and outstanding performance.
Zinc Thermal Diffusion is the future of surface protection — durable, sustainable, and engineered for performance that
lasts.
Key Benefits:
- ● Exceptional corrosion resistance
- ● Uniform, chip-free zinc-iron alloy coating
- ● Environmentally friendly – no liquid effluents or toxic by-products
- ● Excellent wear and abrasion protection
- ● Ideal for complex geometries and threaded components
THERMAL ZINC DIFFUSION COATING (TZD)
TZD creates a zinc–iron alloy through a diffusion process, giving uniform, chip-proof, metallurgically bonded protection.
Key Benefits of TZD
- ● 3000+ hours corrosion resistance
- ● No peeling or cracking
- ● Uniform coating on threads and internal surfaces
- ● Eco-friendly, dry process
- ● High abrasion resistance
Property
Zinc Flake
PTFE
Zinc
Thermal
Spray
Alkaline Zinc
Alkaline Zinc Nickel
Hot-Dip Galvanizing (HDG)
Application
Method
Non-electrolytic
(Dip-Spin/Spray)
Spraying,
Coating
Thermal
SprayingVery Good to
Excellent
(Cathodic/Ba
rrier)
Electroplating
Electroplating
Immersion in Molten Zinc
Corrosion
Protection
Level
Excellent
(Cathodic/Barrie
r)
Good to
Excellent
(Barrier)
Very Good to
Excellent
(Cathodic/Ba
rrier)
Good
(Cathodic)
Superior
(Cathodic)
Excellent
(Cathodic/Barr
ier)
Thickness
Range
($\mu$m)
Thin (5-15)
Varies
greatlyGood to
Excellent
(Barrier)
Thick
(50-500)
Thin (5-20)
Thin (5-15)
Thick (45-200)
Unique
Selling
Proposition
(USP)
Absence of
Hydrogen
Embrittlement
Risk (Ideal for
high-strength
steel fasteners)
Extremely
Low
Coefficient
of Friction
(Non-Stick)
& Excellent
Chemical
Resistance
Ability to
Coat
Extremely
Large
Structures
On-Site
Exceptional
Throwing
Power and
Uniform
Coverage on
Complex
Parts
Highest
Corrosion
Resistance of
Electroplated
Coatings
(Often >1000
hrs salt spray)
Metallurgical
Bond & Most
Cost-Effectiv
e Long-Term
Solution for
Structural
Steel