Enhancement mechanism of shear properties for SiO2 ceramics by laser welding with Al2O3/SiO2 powder

The laser direct fusion welding of SiO2 ceramics was a global challenge in the manufacture of radome. The paper explored the laser direct fusion welding of SiO2 ceramics, investigated the influence of filling powder addition and welding material composition on the formation of weld. The findings rev...

Full description

Saved in:
Bibliographic Details
Published in:Ceramics international 2024-08, Vol.50 (15), p.26691-26702
Main Authors: Zuo, Quanqi, Yin, Xuni, Chen, Cong, Zhang, Yi, Kuang, Miao, Mei, Shuwen
Format: Article
Language:English
Subjects:
Bubbles
Ceramic
Laser welding
Shear strength
SiO2/Al2O3 powder
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The laser direct fusion welding of SiO2 ceramics was a global challenge in the manufacture of radome. The paper explored the laser direct fusion welding of SiO2 ceramics, investigated the influence of filling powder addition and welding material composition on the formation of weld. The findings revealed that the addition of welding material effectively addressed the issue of weld formation in laser direct fusion welding SiO2 ceramic. However, the abundance of internal bubbles within the weld emerged as a significant impediment to further enhancing weld strength. The addition of SiO2/Al2O3 mixed powder not only significantly reduced the quantity and size of internal bubbles within the weld but also generated the strengthening phase Al2SiO5, leading to a substantial increase in weld shear strength, reaching a maximum of 106 % of the base material. The research results provided a new solution for direct melting welding of ceramics.
ISSN:0272-8842
DOI:10.1016/j.ceramint.2024.04.397