Naslov
A Novel Brazing Technology for SiCp/ZL102 Composites Used for Lightweight Transmit/Receive Module in New Generation Phased Array Radar

Autori
Qiu, Dechao ; Gao, Zeng ; Niu, Jitai ; B, Xianli ; Brnić, Josip

Izvornik
Journal of Engineering Materials and Performance (1059-9495) 32 (2023); 1-11

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Atmospheric environment ; Flux-free ; SiCp/ZL102 composites ; T/R modul

Sažetak
In this work, Al-17.0Cu-8.0 Mg-1.5Ni an active brazing alloy is designed for brazing third- generation electronic packaging material 55 vol. % SiCp/ZL102 composites. SEM investigation showed that the foil filler prepared by melt spinning technology has smaller grains. The average measured grain size near the roller surface was about 98 ± 3 nm, and the average grain size on the free surface was about 115 ± 2 nm. The chemical potential of foil filler metal was much higher than that of as-cast filler metal and had a higher surface free energy and lower melting point. The interface of the brazed joint was continuous, uniform and dense, and the black oxide layer disappeared at a brazing temperature of 580 °C for 30 min. The maximum shear strength value of the brazed joint was 92 ± 2 MPa, and the air tightness was 2.0 × 10–10 Pa·m3/s, in line with phased array radar T/R module box packaging requirements. The SEM and EDS of the fracture shown that there were a large number of shear lips, as well as massive particles and extended cracks. The fracture type of brazed joint was brittle fracture.

Izvorni jezik
Engleski

Znanstvena područja
Brodogradnja, Strojarstvo, Temeljne tehničke znanosti

POVEZANOST RADA