Crevice Corrosion Testing - TCA Lab / Alfa Chemistry

You are here:

Crevice Corrosion Testing

Crevice corrosion refers to a kind of local corrosion when the migration of medium is blocked in the narrow gap between metal and metal and between metal and non-metal in the presence of electrolyte solution. Holes, gasket contact surface, lap joint, sediment, fastener crevice are the places where crevice corrosion often occurs. All metals that rely on oxide film or passivation layer to resist corrosion are particularly prone to this kind of corrosion. Crevice corrosion occurs in many media, especially in oxygen-containing media. Crevice corrosion is also a kind of electrochemical corrosion. The crevice corrosion will lead to the decrease of the strength of the parts, and the matching degree will become worse. The increase of the volume of corrosion products in the crevice will cause local additional stress, which not only makes assembly difficult, but also reduces the bearing capacity of components. T,C&A Lab provides you with crevice corrosion tests for stainless steel/alloy and metal products used in energy, aerospace, infrastructure, environment and industry to test the crevice corrosion resistance of the product.

Methods and standards we test to

ASTM G48 Method B	Ferric Chloride Crevice Test
ASTM G48 Method D	Critical Crevice Temperature Test for Nickel-base and Chromium-bearing Alloys
ASTM G48 Method F	Critical Crevice Temperature Test for Stainless Steels
ASTM G192	Determining the Crevice Repassivation Potential of Corrosion-Resistant Alloys Using a Potentiodynamic-Galvanostatic-Potentiostatic Technique
ASTM G78	Standard Guide for Crevice Corrosion Testing of Iron-Base and Nickel-Base Stainless Alloys in Seawater and Other Chloride-Containing Aqueous Environments
ASTM F746	Standard Test Method for Pitting or Crevice Corrosion of Metallic Surgical Implant Materials
ASTM G46	Standard Guide for Examination and Evaluation of Pitting Corrosion

In addition, the experts in our Crevice Corrosion Testing Laboratory also provide a variety of custom tests as you need. Let's discuss the customized service with our experts for free.

Evaluation of crevice corrosion test

Crevice corrosion: Weightlessness corrosion rate
Crevice corrosion electrochemistry: Corrosion potential, polarization current and time relationship curve, corrosion observation

Instruments and data

Reference

Wang, C. G.; et al. Crevice Corrosion of Several Supper Stainless Steels in the Simulated LT-MED Environment. Acta Metallurgica Sinica (English Letters) 31.11 (2018): 1137-1147.

T,C&A Lab's services include, but are not limited to

Corrosion Inhibitor Testing Crevice Corrosion Testing Electrochemical Corrosion Testing Galvanic Corrosion Testing High Pressure High Temperature (HPHT) Corrosion Testing Hydrogen Embrittlement Testing Intergranular Corrosion (IGC) Testing Pitting Corrosion Testing Salt Spray Testing Sour Service Corrosion Testing Stress Corrosion Cracking (SCC) Testing Sulfide Stress Cracking (SSC) Testing

Note: this service is for Research Use Only and Not intended for clinical use.

Related testing services

Material Testing

T,C & A LAB is an independent lab providing quality or custom testing, characterization and analysis of a variety of materials. Our engaged experts are ready to help you.

REQUEST A QUOTE