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Effect of TiO2 on the crystallization, thermal expansion and wetting behavior of Nd2O3-Al2O3-SiO2 glass ceramic filler
Journal of the European Ceramic Society ( IF 5.7 ) Pub Date : 2021-09-16 , DOI: 10.1016/j.jeurceramsoc.2021.09.030
Weiwei Zhu 1 , Le Zhou 1 , Mu Tang 1 , Haohao Zou 1 , Ying Han 1 , Xu Ran 1
Affiliation  

The crystallization behavior, microstructure, crystalline phases, microhardness, coefficient of thermal expansion (CTE), and wetting behavior of Nd2O3-Al2O3-SiO2 (NAS) glass ceramics with different TiO2 content were investigated. The results show that the content of crystals increases and the size of crystals decreases with the increase of TiO2 content. Moreover, the formation of Nd2SiO5 leads to the increase and the precipitation of Al6Si2O13 results in the decrease in the CTE value of NAS glass ceramics. As a result, the CTE of NAS glass ceramics can be controlled in the range of 4.2–9.2 × 10−6/℃. These values are suitable for matching bonding to most ceramics with different CTE. Indeed, contact angle measurement demonstrates that the NAS glasses with 3 %, 6 % and 9 % TiO2 possess excellent wettability on the Al2O3, ZrO2 and zirconia toughened alumina (ZTA) ceramic, respectively.



中文翻译:

TiO2对Nd2O3-Al2O3-SiO2玻璃陶瓷填料结晶、热膨胀和润湿行为的影响

研究了不同TiO 2含量的Nd 2 O 3 -Al 2 O 3 -SiO 2 (NAS)玻璃陶瓷的结晶行为、微观结构、晶相、显微硬度、热膨胀系数(CTE)和润湿行为。结果表明,随着TiO 2含量的增加,晶体含量增加,晶体尺寸减小。此外,Nd 2 SiO 5的形成导致Al 6 Si 2 O 13的增加和析出导致 NAS 玻璃陶瓷的 CTE 值下降。因此,NAS玻璃陶瓷的CTE可以控制在4.2-9.2×10 -6 /℃的范围内。这些值适用于匹配大多数具有不同 CTE 的陶瓷的粘合。事实上,接触角测量表明,含有 3%、6% 和 9% TiO 2的 NAS 玻璃分别对 Al 2 O 3、ZrO 2和氧化锆增韧氧化铝 (ZTA) 陶瓷具有优异的润湿性。

更新日期:2021-10-19
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