corroded sample plate 3d model

Realistic corroded scientific sample plate, square slab 10x10 cm, thickness 0.5 cm. Surface shows fine low-scale granular microstructure with subtle intergranular scratches. Distributed across the surface are medium-sized corrosion pits. Inside the pits are hexagonal cylindrical structures emerging from the bottom of the pits (moderate density). Material looks like corroded ceramic or metal after molten salt exposure. Matte surface, realistic micro-roughness, no glossy finish. Scientific laboratory object, high-detail surface topology, physically accurate texture, neutral lighting, macro photography realism. Clean background, object centered.