cementation

Cementation in metallurgy is a process where a solid material is surrounded by a powder and heated. This causes the solid to change through chemical reactions with the powder. This technique is used to alter the surface properties of metals, making them harder or more resistant to corrosion. For example, it can be used to create composite structures like cemented tungsten carbide cutting tools.12

In contrast, cement in building and civil engineering refers to finely ground powders that, when mixed with water, harden into a solid mass through a chemical process called hydration. This is the basis for materials like mortar and concrete.34