Careers Hydrogen-Induced Cracking (HIC) Corrosion
What is HIC Corrosion?
Hydrogen-induced cracking (HIC) is a form of material degradation in which atomic hydrogen diffuses into steel and collects at internal discontinuities, forming molecular hydrogen that creates high-pressure and internal cracks.
HIC occurs without external stress and is particularly common in sour service environments containing H₂S (hydrogen sulfide).
Common Environments
- Sour crude oil processing
- Natural gas facilities
- Petrochemical plants
- Refineries
- Acid processing units
Contributing Factors
- Presence of H₂S
- Low pH environments
- Material susceptibility
- Operating temperature
- Hydrogen concentration
HIC Mechanism
Three-Step Process:
- Hydrogen Entry: Atomic hydrogen penetrates the steel surface
- Diffusion: Hydrogen atoms move through the steel matrix
- Accumulation: Hydrogen molecules form at defect sites, creating pressure
HVTS: An Advanced Solution for HIC Corrosion
What is High Velocity Thermal Spray (HVTS)?
HVTS is IGS’ proprietary technology that deposits high nobility metal alloys onto the substrate, creating a corrosion-resistant barrier that offers superior protection while eliminating the need for heat treatment and avoiding heat-affected zones (HAZ).
Key Benefits
- Equipment life extension
- Metallurgy upgrade to higher alloys
- Corrosion/erosion barrier protection
- Cost-effective solution
- Rapid application process
Engineered Alloys
Our HVTS Alloy Cladding systems are specifically engineered for their intended environments. Process conditions can be replicated and tested in our state-of-the-art Technology Center in Richmond, Virginia.
Proven Experience
Since 1981, we have completed thousands of reliability projects, demonstrating our operational excellence in the most challenging environments.
Professional Consultation
Our subject matter experts can help you determine the optimal HVTS solution for your specific equipment and environment.