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Aluminium Phosphate

The Experts below are selected from a list of 270 Experts worldwide ranked by ideXlab platform

Alida Bellosi – 1st expert on this subject based on the ideXlab platform

  • Doped calcium–AluminiumPhosphate cements for biomedical applications
    Journal of Materials Science: Materials in Medicine, 2011
    Co-Authors: Valentina Medri, Marco Mazzocchi, Alida Bellosi

    Abstract:

    Calcium–AluminiumPhosphate cements (CAPCs) for biomedical applications, mainly intended for applications in the dental field as non-resorbable fillers, were obtained by reacting Ca-aluminates compounds, i.e. CaO·Al_2O_3 (CA) and CaO·2 Al_2O_3 (CA_2), with Al(H_2PO_4)_3 aqueous solution. Hydroxyapatite was also introduced as a bioactive dispersed phase. Suitable elements like Sr and La were used to increase the radiopacity of the set yielded pastes towards X-ray wavelength used in clinical diagnostic radiographic equipments. La and Sr doped Ca-aluminates powders have been synthesized by solid state reaction at 1,400°C from a mixture of CaCO_3, Al_2O_3, La_2O_3 and SrCO_3. The characteristics of the obtained powders were analyzed and related to the starting compositions and synthesis procedures. The microstructure, setting time, radiopacity and compressive strength of the CAPCs have been investigated and discussed.

  • doped calcium Aluminium Phosphate cements for biomedical applications
    Journal of Materials Science: Materials in Medicine, 2011
    Co-Authors: Valentina Medri, Marco Mazzocchi, Alida Bellosi

    Abstract:

    Calcium–AluminiumPhosphate cements (CAPCs) for biomedical applications, mainly intended for applications in the dental field as non-resorbable fillers, were obtained by reacting Ca-aluminates compounds, i.e. CaO·Al2O3 (CA) and CaO·2 Al2O3 (CA2), with Al(H2PO4)3 aqueous solution. Hydroxyapatite was also introduced as a bioactive dispersed phase. Suitable elements like Sr and La were used to increase the radiopacity of the set yielded pastes towards X-ray wavelength used in clinical diagnostic radiographic equipments. La and Sr doped Ca-aluminates powders have been synthesized by solid state reaction at 1,400°C from a mixture of CaCO3, Al2O3, La2O3 and SrCO3. The characteristics of the obtained powders were analyzed and related to the starting compositions and synthesis procedures. The microstructure, setting time, radiopacity and compressive strength of the CAPCs have been investigated and discussed.

N. Sangwaranatee – 2nd expert on this subject based on the ideXlab platform

  • Effect of Alkali Oxides on Luminescence Properties of Eu3+-doped Aluminium Phosphate Glasses
    Materials Today: Proceedings, 2019
    Co-Authors: Natthakridta Chanthima, N. Sangwaranatee, Jakrapong Kaewkhao, Y. Tariwong

    Abstract:

    Abstract Trivalent europium doped Aluminium Phosphate glasses with different alkali oxides (Li2O, Na2O and K2O) have been prepared by melt quenching technique at 1200 °C. Photoluminescence properties of the obtained glasses have been studied and characterized. Also, Absorption and radiative properties of glasses are evaluated using the Judd–Ofelt (JO) theory. The emission spectra of all glasses remain the characteristic emission peak of Eu3+ with a dominant peak at 612 nm, corresponding to the 5D0 → 7F2 transition by monitoring an excitation wavelength at 393 nm. In the present glass system it was found that lithium oxide has higher intensity of emission spectra than sodium oxide and potassium oxide. The JO intensity parameters (Ω2, Ω4, Ω6) and subsequent radiative properties for the 5D0 → 7FJ (J = 1,2,3,4) transitions are determined. These glasses have potential candidate in the development as red laser source applications.

  • Effect of Eu3+ Ions on the Physical, Optical and Luminescence Properties of Aluminium Phosphate Glasses
    Key Engineering Materials, 2018
    Co-Authors: Natthakridta Chanthima, Jakrapong Kaewkhao, Y. Tariwong, N. Sangwaranatee

    Abstract:

    The physical, optical and luminescence properties of lithium Aluminium Phosphate glasses different doping europium oxide have been investigated to evaluate their properties for solid-state lighting applications. The density and molar volume measurements were carried out at room temperature. The absorption spectra were investigated in the UV-Vis-NIR region from 250 to 2500 nm. The emission spectra, excited with 394 nm excitation wavelength showed four emission transitions corresponding to 5D0→7F1 (591 nm), 5D0→7F2 (612 nm), 5D0→7F3 (648 nm) and 5D0→7F4 (698 nm). The optimal concentration of Eu2O3 in lithium Aluminium Phosphate glasses was 1.00 mol%.

  • Effect of alkali oxide on optical and luminescence properties of Sm 3+ doped Aluminium Phosphate glasses
    Materials Today: Proceedings, 2018
    Co-Authors: N. Sangwaranatee, Natthakridta Chanthima, Y. Tariwong, Jakrapong Kaewkhao

    Abstract:

    Abstract Physical, optical and luminescence properties of lithium Aluminium Phosphate (LAPSm), sodium Aluminium Phosphate (NAPSm) and potassium Aluminium Phosphate (KAPSm) glasses doped with 0.5 mol% of Sm2O3 have been investigated. The results found that all glass samples are clear, homogenous and transparency. The optical absorption spectra are shown strong absorption bands in the visible (VIS) and near-infrared (NIR) region for all doped samples. The emission spectra of all doped glass samples exhibited four peaks correspond to the energy transition 4G5/2 → 6H5/2 (562 nm), 4G5/2 → 6H7/2 (597 nm), 4G5/2 → 6H9/2 (644 nm) and 4G5/2 → 6H11/2 (704 nm) have been observed under 401 (6H5/2 → 6P3/2) nm excitation wavelength. Also, the CIE chromaticity analysis yields reddish-orange light emission for all glass samples. It was observed that the emission intensity LAPSm glass is higher than NAPSm and KAPSm glasses. Hence LAPSm glass could be considered as a good optical glass for Sm3+ dopant for reddish-orange emission material.

Neil B Milestone – 3rd expert on this subject based on the ideXlab platform

  • a new type of layered Aluminium Phosphate nh4 3 co nh3 6 3 al2 po4 4 2 assembled about acobalt iii hexammine complex
    Chemical Communications, 1997
    Co-Authors: Keith R Morgan, Graeme J Gainsford, Neil B Milestone

    Abstract:

    The formation of a novel layered Aluminium Phosphate containing a new
    type of layer stoichiometry is reported; the reaction is carried out under
    basic conditions using cobalt hexammine as a template.

  • a novel layered Aluminium Phosphate co en 3al3p4o16 3h2o assembled about a chiral metal complex
    Journal of The Chemical Society Chemical Communications, 1995
    Co-Authors: Keith R Morgan, Graeme J Gainsford, Neil B Milestone

    Abstract:

    The synthesis and structure of a novel layered Aluminium Phosphate formed about a chiral metal complex is reported.

  • A novel layered Aluminium Phosphate [Co(en)3Al3P4O16·3H2O] assembled about a chiral metal complex
    Journal of The Chemical Society Chemical Communications, 1995
    Co-Authors: Keith R Morgan, Graeme J Gainsford, Neil B Milestone

    Abstract:

    The synthesis and structure of a novel layered Aluminium Phosphate formed about a chiral metal complex is reported.