SEM training: identifying defects, corrosion and nanoparticles

Rapid identification of a surface defect, corroded area or small particles is crucial for directing an investigation, securing production and ensuring product reliability. The SEM training enables your teams to understand the principles of scanning electron microscopy and methodically use the observations. Trainees learn how to prepare samples, select consistent observation conditions and interpret images of surfaces, fractures, deposits and particles.

The SEM makes it possible to examine the morphology of localized areas and compare a compliant area with an altered one. The training covers, in particular, the observation of cracks, porosity, scratches, inclusions, particles, delamination, fractures, and coating irregularities. Participants learn how to define relevant areas and document observations in a usable format.

Corrosion may appear as deposits, pits, corrosion products, cracking or localized surface modifications. The training teaches participants how to locate these areas, compare surface conditions and select observations useful for failure analysis. It does not replace a comprehensive assessment of corrosion mechanisms.

Observing nanoparticles requires rigorous preparation to limit contamination, artefacts and agglomeration phenomena. The training presents the precautions to consider when depositing, locating and observing fine particles, taking into account the nature of the substrate and the sample’s sensitivity to the electron beam.

Built around your materials, components or inspection challenges, the training combines theoretical instruction with hands-on practice. The content may cover topographic observation, locating areas of interest, morphology analysis and developing an approach to identify defects, corrosion and nanoparticles. To complement the surface analysis approach, the Filab laboratory also offers AFM training.

An SEM image primarily describes the contrast and relief observed under the selected analysis conditions. It must be interpreted in light of the sample’s context, preparation method and investigation objective. When elemental composition is required, an appropriate complementary analysis can be considered at the Filab laboratory.

Teams are guided in connecting observations with the available information: material, coating, service environment, defect location and manufacturing history. If an in-depth investigation is required, learn how to identify intergranular corrosion in the laboratory.

Participants learn to distinguish an isolated particle, an agglomerate, and a surface structure, as well as to define measurement criteria consistent with the set objective. SEM provides localized morphological information; the representativeness of the results depends on the sampling plan and the number of observations performed.

Filab laboratory adapts the training level, practical case studies, and learning objectives to your business. Sharing your needs, specifying the materials involved, and defining the target skills makes it possible to build a relevant training program.