**Author details**

**3. Conclusions**

(b) copper [14]. Fmax=1534 N, testing speed v= 0.1 mm/min.

10,000×.

58 Recent Progress in Soldering Materials

The brazing of parts made up of stainless steels using fillers containing Cu and Ag requires specific operating conditions in order to avoid contamination with chemical elements that can cause embrittlement or hot cracking. It is therefore necessary to apply brazing procedures with very short operating times, utilizing filler materials with narrow domain of melting and solidification.

**Figure 22.** Schematic shear test diagrams: (a) ferrous-based metallic glass. Fmax=2670 N, testing speed v= 0.2 mm/min and

**Figure 21.** Polyhedral crystals of different sizes and geometries in the sample joined using copper foil. (a) 1000× and (b)

Ionelia Voiculescu

Address all correspondence to: ioneliav@yahoo.co.uk

Politehnica University of Bucharest, Romania
