Polski

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

844
2024-07-10 14:33:18
Zobacz tłumaczenie

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

Powiązane rekomendacje
  • Ultraviolet spectroscopy: a leap in accuracy and precision under extremely low light levels

    Ultraviolet spectroscopy plays a crucial role in the study of electronic transitions in atoms and rovibronic transitions in molecules. These studies are crucial for the testing of fundamental physics, quantum electrodynamics theory, determination of fundamental constants, precision measurements, optical clocks, high-resolution spectroscopy supporting atmospheric chemistry and astrophysics, and str...

    2024-03-08
    Zobacz tłumaczenie
  • Old brand laser manufacturers win major orders in the nuclear industry

    Recently, Laser Photonics Corporation (LPC) claims to have successfully secured an order from ES Fox Limited to provide them with the CleanTech 500-CTHD laser cleaning system.ES Fox Limited, founded in 1934, is recognized as a leader in the industrial manufacturing and construction industry in Canada. Its nuclear service department has invested millions of hours to support the nuclear power indust...

    2024-05-28
    Zobacz tłumaczenie
  • TRUMPF will launch a fully automatic laser drilling machine for interconnected manufacturing equipped with a 6-kilowatt fiber laser

    TRUMPF introduced its TruMatic 5000 manufacturing unit and new SheetMaster automatic loading and unloading device technology at the 2023 Blechexpo Metal Plate Processing Exhibition in Stuttgart, Germany.Users of the new system will benefit from fully automatic laser cutting, punching, and forming capabilities. The new SheetMaster device can achieve fully automated material flow within the manufact...

    2023-10-23
    Zobacz tłumaczenie
  • Han's Laser's net profit in the third quarter decreased by 45.37% year-on-year

    Recently, Han's Laser released a third quarter report, stating that the company achieved a revenue of 3.301 billion yuan in the third quarter, a year-on-year decrease of 8.96% (after adjustment); The net profit attributable to shareholders of the listed company was 209 million yuan, a year-on-year decrease of 45.37% (after adjustment).During the reporting period, the company's operating profit, to...

    2023-10-25
    Zobacz tłumaczenie
  • In the development of modern electronic welding technology, the application advantages of laser soldering process

    With the rapid development of modern electronic information technology, integrated circuit chip packaging forms are also emerging in an endless stream, and the package density is getting higher and higher, which greatly promotes the development of electronic products to multi-function, high performance, high reliability and low cost.So far, through hole technology (THT) and surface mount technolog...

    2023-09-13
    Zobacz tłumaczenie