Microstructure and interfacial evaluation of Co-based alloy coating on copper by pulsed Nd:YAG multilayer laser cladding

Joining mechanism of Ti/Al dissimilar alloys during laser welding-brazing process

“…As a heat source of materials processing, laser has been widely applied in the fields of welding [17] and cladding [18,19]. In the joining of dissimilar alloys, laser welding method provides some advantages such as high energy density, rapid heating/cooling velocity and accessibility to the heating zone [20,21].…”

Microstructures and properties of low-chromium high corrosion-resistant TiC–VC reinforced Fe-based laser cladding layer

“…The corresponding binding energy of Fe 2p and Cr 2p peaks were 711.48 eV and 576.46 eV which shows that Fe and Cr exited as Fe 3+ and Cr 3+ respectively [33]. Therefore, the composition of the passive film formed on S4 layer was Fe(OH) 3 and Cr(OH) 3 .…”

“…On one hand, the passive film forming ability increased with 0.25 wt.%CeO 2 , and the passive film became more compact and uniform. On the other hand, from the XPS results, the passive film formed on S1 cladding layer was Fe 3 O 4 , while the passive film formed on S4 cladding layer was Fe(OH) 3 and Cr(OH) 3 . The passive films of Fe(OH) 3 and Cr(OH) 3 were more stable than Fe 3 O 4 .…”

“…and 0.25 wt.%CeO 2 increased 7.33 times, and the EIS Nyquist spectrum of the cladding layer transformed into a capacitive arc. The passive films formed on the cladding layer were Fe(OH) 3 and Cr(OH) 3 which displayed n type and p type semiconductivity respectively. Table 4 Fitting results for EIS of cladding layers [4].…”

“…It shows good application prospects for improving the wear and corrosion resistance of alloy materials [1][2][3][4]. Much previous studies indicate TiC-VC ceramic particle reinforced Fe-based composite coatings possess high hardness and good wear resistance [5][6][7].…”