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The process begins with refining erbium metal to achieve extremely high purity. Advanced purification techniques remove impurities and ensure the material meets strict quality standards for further processing.
The purified erbium is melted in a vacuum or inert atmosphere to prevent oxidation, then cast into uniform ingots. This step ensures chemical homogeneity and creates a stable base material for rolling.
The erbium ingots undergo controlled heat treatment to eliminate internal stress and improve grain uniformity. This prepares the material for smooth and consistent deformation in later stages.
The homogenized ingots are rolled in multiple stages, gradually reducing thickness from slab to thin sheet. Advanced rolling control ensures dimensional accuracy, uniform flatness, and smooth surface quality.
After rolling, the erbium sheets are annealed under vacuum or inert gas to restore ductility and relieve internal stress. This treatment enhances flexibility and ensures stable mechanical performance.
The annealed erbium foil is cleaned, polished, and trimmed to achieve a bright, smooth surface and precise dimensions. Surface finishing enhances purity and prepares the foil for inspection and packaging.
Each erbium foil is carefully inspected for thickness accuracy, purity, and surface quality. The final products are packaged in vacuum-sealed or inert-gas environments to prevent oxidation and preserve long-term stability.
