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Room‐temperature bonding method of bioactive ultrathin glass film on titanium by a dissolution‐polymerization reaction
Author(s) -
Liu Yin,
Kishi Tetsuo,
Jeng RayJay,
Matsushita Nobuhiro,
Yano Tetsuji
Publication year - 2021
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.17455
Subject(s) - dissolution , materials science , layer (electronics) , x ray photoelectron spectroscopy , titanium , substrate (aquarium) , composite material , anodic bonding , polymerization , chemical engineering , depolymerization , polymer , metallurgy , polymer chemistry , oceanography , engineering , geology
Freestanding ultrathin glass film (UGF) of 45S5 bioglass was successfully bonded on a Ti substrate by the room‐temperature bonding method. 45S5 UGFs with a thickness of 1~4 μm were fabricated by the glass‐blowing technique, and the UGF was attached on the Ti plate at room temperature with a water layer between them. The bonding strength was about 370 mJ/m 2 just after bonding, and it increased during storing in the ambient atmosphere at room temperature and reached about 900 mJ/m 2 after 9 hours storage. The interfaces of the UGF and Ti substrate during the bonding process were analyzed by an X‐ray photoelectron spectroscopy. The as‐prepared UGF was found to have surface layers with a high content of Na 2 O and low content of SiO 2 , and the dissolution of Na 2 O‐rich component into water layer induced depolymerization and polymerization of SiO 2 network to form Si‐O‐Si bonds between the UGF and Ti plate and then to increase the bonding strength during storage. This work presents the simple technique to laminate the bioactive glass layer on the surface of the metal without post heat treatment.