Direct thermal diffusion bonding of Nd:YAG/YAG composite transparent ceramics by vacuum sintering. Issue 11 (September 2017)

• Record Type: Journal Article
• Authors: Ma, Benyuan; Zhang, Wei; Chen, Xintao; Shi, Yanli; Guo, Chunyan; Xie, Xiumin; Li, Feng; Dai, Qian; Zhang, Zhibin; Guan, Zhouguo; Shen, Bizhou; Song, Haizhi; Wei, Nian; Lu, Tiecheng
• Is Part Of: Journal of the European Ceramic Society. Volume 37:Issue 11(2017)
• Page Start: 3631
• Page End: 3639
• Publication Date: 2017-09
• Subjects: Nd:YAG -- Optical materials -- Fracture strength -- Thermal diffusion bonding -- Microstructure; Ceramic materials -- Periodicals; Composite materials -- Periodicals; Matériaux céramiques -- Périodiques; Composites -- Périodiques; Ceramic materials; Composite materials; Periodicals; Electronic journals; 666.05
• DOI: 10.1016/j.jeurceramsoc.2017.04.010
• Languages: English
• ISSNs: 0955-2219

Abstract

Abstract: Nd:YAG/YAG transparent ceramics were prepared by vacuum sintering at 1780 °C for 40 h and annealed at 1450 °C for 20 h in air. Two separately polished Nd:YAG/YAG samples were bonded into monolithic and uniform composite-material followed by vacuum sintering at 1790 °C for 50 h under uniaxial pressure of 60 MPa, and then annealed at 1450 °C for 100 h in air. The fracture strength of bonded samples at the bonding interface is higher than that of as-prepared Nd:YAG/YAG samples. Meanwhile, the extinction coefficient of bonded samples is 0.0305 cm −1 which is an improvement over as-prepared samples. The microstructure of the contact interface reveals the disappearance of the contact layer at the bond due to the grain growth and coalescence mainly based on grain boundary diffusion at higher temperatures and longer heat-treated time, which indicates that the bonding technology is beneficial to the fabrication of the thick composite materials.