**3.4 Laser glazing**

Laser glazing (LG) is a surface melting method using a continuous high-energy laser beam which traverses the surface of a substrate, generating a thin layer of melted material. After the solidification of this thin melted layer, the material's surface appears glassy; therefore this method is termed as laser glazing. Researchers have done LG to improve surface properties [42–44]. It employs low peak power;

**Figure 9.** *Steps in SLM technique [41].*

hence vaporization of surface materials is restricted. LG is used to level the surface and develop a dense re-melted layer. Due to such a system microhardness, erosion resistance and thermal shock behavior of the substrate may be improved.
