Nouvelles

Carbon fiber composites combine lightweight design with high mechanical performance, but their heterogeneous structure makes metallographic preparation particularly challenging. During sectioning and polishing, fiber pull-out, surface damage, scratches, and edge rounding can alter the fiber/matrix interface and affect the accuracy of subsequent microstructural analysis. For this sample, a controlled preparation route was used: • TJ2568 […]

For coated sapphire components used in optical and precision applications, metallographic cross-sectioning is often used to evaluate coating and ink-layer thickness, interface quality, and overall integrity. The challenge is preparation. Thin coatings can easily suffer from edge chipping, delamination, pull-off, or rounding during cutting and polishing, making the final cross-section difficult to measure accurately. For […]

Cracking, delamination, or brittle fracture during stamping and bending of SPCC cold-rolled steel may not always be explained by dimensions or conventional tensile properties. Cross-sectional metallography can reveal what routine inspection may miss — such as coarse grains, excessive banding, carbide aggregation, or rolling-induced microcracks that can reduce formability and contribute to unexpected failures. For […]

Les barres collectrices en cuivre conductrices haute puissance et les résistances shunt intégrées adoptent généralement une structure d’électrodéposition à double couche : une sous-couche de nickel de 1,5 à 4 μm + une couche supérieure d’étain de 3 à 8 μm, permettant d’équilibrer la résistance à la corrosion et les exigences d’assemblage électrique. En tant que couche barrière, la sous-couche dense de nickel empêche la diffusion vers l’extérieur ainsi que l’oxydation des ions du substrat en cuivre. Elle améliore l’adhérence du placage et renforce la résistance à l’usure et aux hautes températures […]