Corrosion Testing & Solutions, LLC (CT&S)

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MATERIALS EVALUATION and CORROSION TESTING & SOLUTIONS
It's all we do.

At Corrosion Testing & Solutions, LLC (CT&S), we offer materials corrosion consulting, corrosion testing, and corrosion training. The selection of suitable metal alloys for best service in a corroding environment is essential to minimize issues due to corrosion and materials failures. 

All metal alloys are prone to be degraded when they are exposed to a corroding environment. Corrosion is caused by oxidation and reduction reactions taking place at the corroding surface in contact with the corroding medium. These two types of reactions can independently lead to failure.

The oxidation reactions are detrimental by inducing general metal thinning or localized attack, subject to the type of alloy and the corroding conditions. Reduction reactions are detrimental because of the generated hydrogen at the corroding surface in acidic or alkaline environments. The absorption and diffusion of hydrogen into the corroding metal can induce lattice defects, lattice deformation, and stress build up which can result in metal embrittlement and sudden failure in some alloys.

The wrong combination of type of alloy, aggressive components in the corroding environment, pH, temperature, and state of internal residual stress or externally applied stress to the alloy can lead to accelerated metal corrosion and metal failure. Pitting corrosion, crevice corrosion, inter-granular corrosion, stress corrosion cracking, as well as uniform corrosion can each conduce to catastrophic failures.

At CT&S we are equipped to evaluate the corrosion performance of your alloys simulating your corroding medium using electrochemical techniques to determine corrosion rate and type of corrosion attack. We also offer consulting services on metal corrosion and provide training to understand, prevent, and mitigate the detrimental effects of corrosion, as well as to learn about corrosion testing procedures. A state of the art low-cost corrosion instrument can be readily installed at your facility. See our CONTACT US page so we can best serve you.

Why is Corrosion Testing Important?
WHAT WE DO
As featured on:
Corrosion prone alloy in corrosive ambient.
Uniform corrosion of cast iron exposed to a seawater atmosphere. This alloy can corrode at a high rate of 45 µm/year in a seawater environment, known to contain about 3.5% of sodium chloride, NaCl. The chloride content of seawater enhances the rate of uniform corrosion and can cause aggressive pitting attack in certain alloys.
Electrochemical Tafel polarization graph used to determine the rate of uniform corrosion of 304 stainless steel, found to be 0.311 µm/year in a simulated seawater solution containing 3.5% NaCl. When exposed to seawater, this alloy develops pits whose corrosion rate is orders of magnitude higher than the measured 0.311 µm/year. If your alloys are exposed to a chloride containing environment, we can assess their corrosion rate and their sensitivity to pitting attack electrochemically.
Pitting corrosion of 303 stainless steel (SS) in 3.5% NaCl aqueous solution during pototentiostatic polarization at 0.140V relative to its open circuit corrosion potential. The graph exhibits a sudden sharp and continuous anodic current rise at 15,700 seconds, 4900 seconds from the start of the polarization. The rise in current is due to a breakdown of the protective metal oxide film on 303 SS caused by chloride, leading to localized pitting corrosion and fast metal dissolution.
Brittle Fracture due to H CHARGING!
Brittle fracture of Ti alloy due to embrittlement from cathodic charging at 15 mA/cm2 in 0.1N NaOH.
SCC Crack of Pipeline Steel!
EMBRITTLEMENT CAUSED BY CORROSION IN WELDED ZONE OF STEEL PIPELINE
Brittle fracture due to hydrogen embrittlement caused by corrosion in welded zone of steel pipeline, failed by stress corrosion cracking.
Current rise due to H permeation through Fe coupled to Zn. Final current rise is due to Fe free corrosion.
First current rise is due to H permeation through Fe coupled to Zn. Small rise is due to Fe free corrosion.
Tafel Polarization Plot of 303 SS in NaCl-Saturated Aqueous Solution. 6-01.03.24 D

303 stainless steel in NaCl-saturated aqueous solution corroding at 1.44 µm/year.

Current spikes due to crevice corrosion of 304 satainless steel in distilled water during anodic polarization.cvs
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The information contained in this website and on related work reports from Corrosion Testing & Solutions, LLC (CT&S) is for general information purposes only and does not constitute professional advice of any kind. The information is provided by Corrosion Testing & Solutions, LLC (CT&S). While we attempt to keep the information up to date and correct, we make no representations or warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability or availability with respect to the website or the information, products, services, or related graphics contained on the website and on related work reports from CT&S for any purpose. Any reliance you place on such information is at your own risk.
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