TITLE

Microwave synthesis and physical characterization of tin(II) phosphate glasses

AUTHOR(S)
Hémono, Nicolas; Chenu, Sébastien; Lebullenger, Ronan; Rocherullé, Jean; Kéryvin, Vincent; Wattiaux, Alain
PUB. DATE
June 2010
SOURCE
Journal of Materials Science;Jun2010, Vol. 45 Issue 11, p2916
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Tin phosphate glasses in the SnO–P2O5 binary diagram have been prepared by using a domestic microwave-heating device. Microwaves provide an extremely facile and automatically temperature-controlled route to the synthesis of glasses due to the specific dielectric properties of each chemical composition. Typical melting time is no longer than 10 min, limiting the oxidation of Sn2+ and the melt can be quenched into glass. The glass transition temperature increases with the SnO content confirming the depolymerization of the vitreous network, as expected by the relative fraction of the different Q n structural units deduced from NMR experiments. Concerning the mechanical properties, the Vickers hardness and the fracture toughness decrease while the thermal expansion coefficient and the different elastic moduli remain constants. These results confirm that those characteristics are not very sensible to structural considerations. On the contrary, the chemical durability of Sn2P2O7, determined from the weight loss method, is 300 times higher than that of Sn(PO3)2. Furthermore, Sn2P2O7 is the only glass composition that exhibits a devitrification phenomenon leading to the low-temperature phase of the crystalline tin(II) pyrophosphate.
ACCESSION #
48847686

 

Related Articles

  • Low temperature sintering and microwave dielectric properties of MgNb2O6 ceramics. Tian, Z. Q.; Lin, L. // Journal of Materials Science: Materials in Electronics;Sep2009, Vol. 20 Issue 9, p867 

    The effects of co-doped CuO and B2O3 addition on the sintering temperature, microstructure and microwave dielectric properties of MgNb2O6 ceramics prepared with conventional solid-state route were investigated. When both CuO and B2O3 were added, the MgNb2O6 ceramics were not only sintered at...

  • Microwave dielectric properties of B2O3 doped LaAlO3 ceramics at low sintering temperature. Cheng-Shing Hsu; Cheng-Liang Huang; Kuo-Hau Chiang // Journal of Materials Science;Aug2003, Vol. 38 Issue 16, p3495 

    The microwave dielectric properties and the microstructures of LaAlO3 ceramics with B2O3 additions (0.25–1 wt%) prepared with conventional solid-state route have been investigated. Doping with B2O3 (up to 0.5 wt%) can effectively promote the densification of LaAlO3 ceramics. It is found...

  • Microwave synthesis and sintering characteristics of CaCu3Ti4O12. Thomas, P.; Sathapathy, L. N.; Dwarakanath, K.; Varma, K. B. R. // Bulletin of Materials Science;2007, Vol. 30 Issue 6, p567 

    CaCu3Ti4O12 (CCTO) was synthesized and sintered by microwave processing at 2⋅45 GHz, 1⋅1 kW. The optimum calcination temperature using microwave heating was determined to be 950°C for 20 min to obtain cubic CCTO powders. The microwave processed powders were sintered to 94%...

  • Microwave heating and dielectric diagnosis technique in a single-mode resonant cavity. Jow, Jinder; Hawley, Martin C.; Finzel, Mark C.; Asmussen, Jes // Review of Scientific Instruments;Jan1989, Vol. 60 Issue 1, p96 

    A single-mode microwave heating and dielectric measurement technique has been developed. The single- and swept-frequency methods were used to simultaneously heat the material and measure its complex permittivity in this single-mode technique. A cylindrical cavity and Nylon 66 rods were used in...

  • Characterization of NaPO-SnO-WO glasses prepared by microwave heating. Chenu, Sébastien; Lebullenger, Ronan; Rocherullé, Jean // Journal of Materials Science;Dec2010, Vol. 45 Issue 23, p6505 

    Phosphate glasses containing tin and tungsten oxides were produced by microwave heating under a nitrogen protective atmosphere. Microwaves permit to heat the raw materials at temperatures close to 1000 °C in short time and to obtain homogeneous glasses in less than 10 min. All samples were...

  • Viability and Antigenicity of Anisakis simplex after Conventional and Microwave Heating at Fixed Temperatures. Vidaček, Snja; De Las Heras, Cristina; Solas, Maria Theresa; García, Maria Luisa; Mendizábal, Angel; Tejada, Margarita // Journal of Food Protection;Dec2011, Vol. 74 Issue 12, p2119 

    Inactivation of parasites in food by microwave treatment may vary due to differences in the characteristics of microwave ovens and food properties. Microwave treatment in standard domestic ovens results in hot and cold spots, and the microwaves do not penetrate all areas of the samples depending...

  • Self-passivation of transparent single-walled carbon nanotube films on plastic substrates by microwave-induced rapid nanowelding. Tark Han, Joong; Kim, Daeho; Suk Kim, Jun; Kwon Seol, Seung; Yol Jeong, Seung; Jin Jeong, Hee; Suk Chang, Won; Lee, Geon-Woong; Jung, Sunshin // Applied Physics Letters;4/16/2012, Vol. 100 Issue 16, p163120 

    We developed a straightforward method for enhancing the environmental stability of transparent single-walled carbon nanotube (SWCNT) network films on plastic substrates using a rapid microwave heating to produce SWCNT film-substrate nanowelding without any chemicals. The selective heating of...

  • Microwave synthesis of metal phthalocyanines under solvent-free conditions. Ki Suck Jung; Jong Ho Kwon; Se Mo Shon; Jin Phil Ko; Jun Sik Shin; Seong Soo Park // Journal of Materials Science;Jan2004, Vol. 39 Issue 2, p723 

    Discusses the microwave synthesis of metal phthalocyanines under solvent-free conditions. Use of phthalocyanines as a photoconducting material in photocopying machines; Microwave processing as an alternative to classical thermal processing because of the advantage of microwave heating;...

  • Characterization of the formation of NaA zeolite membrane under microwave radiation. Xiaobo Chen; Weishen Yang; Jie Liu; Liwu Lin // Journal of Materials Science;Jan2004, Vol. 39 Issue 2, p671 

    Discusses the characterization of the formation of NaA zeolite membrane under microwave radiation. Observation of the formation stages in microwave radiation environment; Comparison of observations with results from x-ray diffraction and gas permeation measuremens; Demonstration of the growth...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics