chanelink logo
CHANELINK
简体中文

Progress has been made in the corrosion mechanism of alkali aluminum phosphate glass at Shanghai Optics and Machinery Institute

374
2024-07-10 14:33:18
查看翻译

Recently, the Advanced Laser and Optoelectronic Functional Materials Department of the Shanghai Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, has made new progress in the corrosion mechanism of alkali aluminophosphate glass. The research findings were published in The Journal of Physical Chemistry C under the title "Formation Mechanism of Crystal Phase during Corrosion of Aluminum Phosphate Glasses".

Alkaline aluminum phosphate glass has important applications in the solidification of nuclear waste glass and other fields. Among them, chemical stability is crucial for its application. To gain a deeper understanding of the chemical stability of glass, it is necessary to understand its chemical corrosion mechanism. The study of glass corrosion mechanisms has a long history, but there are still many controversies. Previous research has mainly focused on borosilicate glass, while there has been less research on the corrosion mechanism of phosphate glass.

In this study, researchers conducted atomic scale analysis of the structure of alkali aluminum phosphate glass before and after corrosion using various advanced nuclear magnetic resonance techniques, and found that there were two different dissolution modes of the Q1 and Q0 groups in the glass in aqueous solution. This confirms that the crystal layer on the surface of phosphate glass originates from the dissolution of glass components and subsequent deposition on the glass surface. Revealed the dissolution mechanism of alkaline aluminum phosphate glass in aqueous solution and the formation mechanism of surface crystal layer. The research results deepen our understanding of the chemical stability mechanism of alkaline aluminum phosphate glass.

(a) The two dissolution modes of glass. (b) 27Al {27Al} 2D WURST 2Q-1Q spectrum of corroded glass

Source: Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences

相关推荐

  • A new approach to 3D printing has been published in a Nature journal

    In the last century, the improvement of mechanical properties of structural metals was mainly achieved through the creation of increasingly complex chemical compositions. The complexity of this ingredient increases costs, creates supply fragility, and makes recycling more complex.As a relatively new metal processing technology, metal 3D printing provides the possibility to re-examine and simplify ...

    2024-11-29
    查看翻译

  • X photon 3D nanolithography

    Virtual and Physical Prototypes: X-ray laser direct writing 3D nanolithography.Multi-photon polymerization (MPP), also known as 3D nanoprinting, has been investigated using wavelength-tunable femtosecond lasers. At a fixed pulse width of 100 fs, any spectral color in the range of 500nm to 1200nm can be used, which reveals the interaction of more subtle photophysical mechanisms than two-photon phot...

    2023-09-11
    查看翻译

  • Free space nanoprinting beyond optical limitations can create 4D functional structures

    Two photon polymerization is a potential method for nanofabrication of integrated nanomaterials based on femtosecond laser technology. The challenges faced in the field of 3D nanoprinting include slow layer by layer printing speed and limited material selection due to laser material interactions.In a new report in Progress in Science, Chenqi Yi and a team of scientists in the fields of technical s...

    2023-10-09
    查看翻译

  • Toronto research has discovered 21 new sources of organic solid-state lasers

    Organic solid-state lasers (OSLs) are expected to achieve widespread applications due to their flexibility, tunability, and efficiency. However, they are difficult to manufacture and require over 150.000 possible experiments to find successful new materials, and discovering them will be a work of several lifetimes. In fact, according to data from the University of Toronto in Canada, only 10-20 new...

    2024-05-22
    查看翻译

  • The green and blue laser diode series provides higher beam quality

    Rutronik has expanded its optoelectronic product portfolio by introducing green and blue laser diodes packaged in metal cans TO38 and TO56 using AM OSRAM. They leave a deep impression with improved beam quality and stricter electro-optic tolerances. The power level of the laser diode ranges from 10mW to 100mW. Diodes such as PLT3 520FB and PLT5 450GB are now available on the market.The flexibility...

    2024-01-31
    查看翻译