High Temperature Corrosion Protection

The AlumiLokTM coating process is a scalable, cost-effective approach to protect metal components from corrosion in high-temperature applications. Coated stainless steel components exhibit eight to ten times less oxidation, greatly exceeding the performance of other high temperature alloys.  AlumiLokTM has been shown to work with a wide range of materials, including ferritic & austenitic stainless steels, Inconel, nickel alloys & copper alloys.  AlumiLokTM replicates the traditional aluminization surface microstructure, proving just as effective as the expensive vapor phase aluminization process.

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Coating reproduces the microstructure produced by conventional aluminization processes

AlumiLok Microstructure

Aluminide Coating (AlumiLok)

Vapor-Phase Aluminization (VPA)

Substrate: 316 stainless steel
Aluminide coating: standard processing

AlumiLok coating significantly improves oxidation behavior of stainless steels

AlumiLok Oxidation Behavior

AlumiLokTM Coated


Substrate: 316 stainless steel Temperature: 900 °C Gas composition: humidified air

Resistance to coking in high carbon gas streams

AlumiLok Coking Behavior



Substrate: 316 stainless steel
Exposure time: 100 hours
Temperature: 550 °C
Gas composition: 33 % H2, 30 % CO2, 24.7 % CO, and 12 % CH4
Pressure: 4 psi

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