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1. Consequences of hydroxyl generation by the silica/water reaction

Author

Fett, Theo, Schell, Karl G., Bucharsky, Ethel C., Rizzi, Gabriele, Hettich, Pascal, Wagner, Susanne, and Hoffmann, Michael J.

Subjects
Quarzglas, Hydroxylbildung, Schwellen, Diffussion, Wasser/Quarzglas Reaktion, silica, silica/water reaction, swelling, diffusion, bic Book Industry Communication::T Technology, engineering, agriculture::TG Mechanical engineering & materials
Abstract

Water diffusing into silica surfaces gives rise for several effectson diffusion behaviour and mechanical properties. Water added to silica glass increases its specific volume so that the silica expands near the surface. Mechanical boundary conditions give rise for compressive “swelling stresses”. This fact provides a tool for the interpretation of many experimental observations from literature.

Published
2022
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2. Evaluation of water profiles at silica surfaces at 23°C, 100°C and 200°C by Zouine et al

Author

Schell, Günter, Bucharsky, Claudia, and Fett, Theo

Subjects
ddc:620, Engineering & allied operations
Abstract

The reaction equation for the reaction between water and silica reads ≡Si-O-Si≡ +H$_2$O ↔ [2 SiOH] For this reaction the equilibrium constant, k, is affected by internal swelling stresses. We investigated the behaviour of erfc-shaped distributions of the total water amount in earlier Reports. The present report is intended to evaluate more complicated water profiles. Water concentrations at silica surfaces were measured by Zouine et al. Some of their data showed deviations from the expected erfc-shape. The associated datasets were used to demonstrate the procedure of determining the local equilibrium constant and the distributions of the hydroxyl and molecular water species on irregular water distributions. In an Appendix we discuss what could be the reason for the deviations in the distribution of the total water C$_w$ from the erfc-shape. The occurrence of back-diffusion after aging is assumed.

Published
2023

3. Interpretation of irregular water profiles at silica surfaces

Author

Bucharsky, Claudia, Schell, Günter, and Fett, Theo

Subjects
ddc:620, Engineering & allied operations
Abstract

In the present Report, we will discuss the irregular water distributions at silica surfaces as were reported by the measured data from Zouine et al. [1], especially those at room temperature. The question was whether the deviations from the usually found erfc-shaped water pro- files can be understood by competing diffusion and surface dissolution and whether back-diffusion after water or air storage, may affect the type of water profile. We will come to the conclusion that the irregular distributions of the measured data by Zouine et al. [1], especially those at room tem- perature, can be understood by back-diffusion after water or air storage, respectively.

Published
2023
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4. Determination of Strength

Author

Munz, Dietrich, Fett, Theo, Zunger, Alex, editor, Osgood, R. M., Jr., editor, Hull, Robert, editor, Sakaki, H., editor, Munz, Dietrich, editor, and Fett, Theo, editor

Published
1999
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5. Multiaxial Failure Criteria

Author

Munz, Dietrich, Fett, Theo, Zunger, Alex, editor, Osgood, R. M., Jr., editor, Hull, Robert, editor, Sakaki, H., editor, Munz, Dietrich, editor, and Fett, Theo, editor

Published
1999
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6. Scatter of Mechanical Properties

Author

Munz, Dietrich, Fett, Theo, Zunger, Alex, editor, Osgood, R. M., Jr., editor, Hull, Robert, editor, Sakaki, H., editor, Munz, Dietrich, editor, and Fett, Theo, editor

Published
1999
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7. Proof-Test Procedure

Author

Munz, Dietrich, Fett, Theo, Zunger, Alex, editor, Osgood, R. M., Jr., editor, Hull, Robert, editor, Sakaki, H., editor, Munz, Dietrich, editor, and Fett, Theo, editor

Published
1999
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8. Cyclic Fatigue

Author

Munz, Dietrich, Fett, Theo, Zunger, Alex, editor, Osgood, R. M., Jr., editor, Hull, Robert, editor, Sakaki, H., editor, Munz, Dietrich, editor, and Fett, Theo, editor

Published
1999
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9. Subcritical Crack Growth

Author

Munz, Dietrich, Fett, Theo, Zunger, Alex, editor, Osgood, R. M., Jr., editor, Hull, Robert, editor, Sakaki, H., editor, Munz, Dietrich, editor, and Fett, Theo, editor

Published
1999
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10. Plasticity

Author

Munz, Dietrich, Fett, Theo, Zunger, Alex, editor, Osgood, R. M., Jr., editor, Hull, Robert, editor, Sakaki, H., editor, Munz, Dietrich, editor, and Fett, Theo, editor

Published
1999
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11. R-Curve Behaviour

Author

Munz, Dietrich, Fett, Theo, Zunger, Alex, editor, Osgood, R. M., Jr., editor, Hull, Robert, editor, Sakaki, H., editor, Munz, Dietrich, editor, and Fett, Theo, editor

Published
1999
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12. Physical Properties

Author

Munz, Dietrich, Fett, Theo, Zunger, Alex, editor, Osgood, R. M., Jr., editor, Hull, Robert, editor, Sakaki, H., editor, Munz, Dietrich, editor, and Fett, Theo, editor

Published
1999
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13. High-Temperature Behaviour

Author

Munz, Dietrich, Fett, Theo, Zunger, Alex, editor, Osgood, R. M., Jr., editor, Hull, Robert, editor, Sakaki, H., editor, Munz, Dietrich, editor, and Fett, Theo, editor

Published
1999
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14. Fracture Mechanics

Author

Munz, Dietrich, Fett, Theo, Zunger, Alex, editor, Osgood, R. M., Jr., editor, Hull, Robert, editor, Sakaki, H., editor, Munz, Dietrich, editor, and Fett, Theo, editor

Published
1999
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15. Overview and Basic Properties

Author

Munz, Dietrich, Fett, Theo, Zunger, Alex, editor, Osgood, R. M., Jr., editor, Hull, Robert, editor, Sakaki, H., editor, Munz, Dietrich, editor, and Fett, Theo, editor

Published
1999
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16. Thermal Shock Behaviour

Author

Munz, Dietrich, Fett, Theo, Zunger, Alex, editor, Osgood, R. M., Jr., editor, Hull, Robert, editor, Sakaki, H., editor, Munz, Dietrich, editor, and Fett, Theo, editor

Published
1999
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19. Mass transfer coefficient for silica in liquid water at 200°C

Author

Schell, Günter, Fett, Theo, and Bucharsky, Claudia

Subjects
ddc:620, Engineering & allied operations
Abstract

In previous reports on the mass transfer coefficient of quartz glass in water, we were able to determine that this is significantly larger in liquid water than in saturated water vapor as the surrounding medium. From literature results by Zouine et al. (2007) a lower limit value of the time parameter h/√D in eq.(4) of >10$^{-6}$ h$^{-1/2}$, could be deduced for 200°C and liquid water. One explanation for this result could be, among other things, an increased roughness due to the dissolution of the surface layers of the glass in water than is to be expected for water vapour.

Published
2022
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34. Nonlinearity of strain and strain hysteresis in morphotropic LaSr-doped lead zirconate titanate under unipolar cycling with high electric fields

Author

Kungl, Hans, Fett, Theo, Wagner, Susanne, and Hoffmann, Michael J.

Subjects
Hysteresis -- Research, Lead compounds -- Mechanical properties, Electric fields -- Measurement, Physics
Abstract

A study was conducted to investigate strain behavior under unipolar cycling with high electrical fields for morphotropic compositions of lead zirconate titanate (PZT) 1La2Sr with different Zr/Ti ratios and phase contents. The corresponding data on strain hysteresis indicate that the nonlinearity was due to a loss generating strain mechanism attributed to domain switching.

Published
2007

36. List of Contributors

Author

Abe, Masanori, primary, Adler, Joerg, additional, Adschiri, Tadafumi, additional, Akamatsu, Kazuki, additional, Akedo, Jun, additional, Aldinger, Fritz, additional, Alway-Cooper, Rebecca, additional, Aoki, Nobuaki, additional, Arita, Toshihiko, additional, Badev, Alexander, additional, Beall, George, additional, Bermejo, Raul, additional, Cazorla-Amorós, Diego, additional, Chartier, Thierry, additional, Chikyo, Toyohiro, additional, Danzer, Robert, additional, Deluca, Marco, additional, Dresselhaus, Mildred S., additional, Endo, M., additional, Enomoto, Naoya, additional, Fett, Theo, additional, Fey, Tobias, additional, Fong, Jeffrey T., additional, Freiman, Stephen W., additional, Fujikawa, Takao, additional, Fujita, Koji, additional, Furukawa, Ryuzo, additional, Ghosh, Dipankar, additional, Goto, Takashi, additional, Gracia-Espino, E., additional, Greil, Peter, additional, Handa, Hiroshi, additional, Harada, Yoshiyasu, additional, Hatakeyama, Mamoru, additional, Hayashi, T., additional, Herrmann, Mathias, additional, Hirao, Kiyoshi, additional, Hojo, Daisuke, additional, Höland, Wolfram, additional, Hoshina, Takuya, additional, Hosono, Hideo, additional, Hotta, Mikinori, additional, Hyuga, Hideki, additional, Ikoma, Toshiyuki, additional, Ikuhara, Yuichi, additional, Inagaki, Michio, additional, Inoue, Masashi, additional, Ionescu, Emanuel, additional, Ishida, Emile H., additional, Itami, Hiroaki, additional, Itoh, Yoshiyasu, additional, Itoh, Toshio, additional, Izu, Noriya, additional, Jeon, Y-P., additional, Jeong, Se-Young, additional, Kanamura, Kiyoshi, additional, Katagiri, Kiyofumi, additional, Kawahara, Yuuzou, additional, Kawaji, Hitoshi, additional, Kim, Y.A., additional, Kita, Hideki, additional, Koinuma, Hideomi, additional, Komarneni, Sridhar, additional, Kondo, Naoki, additional, Kotobuki, Masashi, additional, Koumoto, Kunihito, additional, Li, Ji-Guang, additional, Linares-Solano, Angel, additional, Lippmaa, Mikk, additional, López-Urías, F., additional, Lube, Tanja, additional, Maeda, Hirotaka, additional, Manabe, Yasuo, additional, Manocha, Lalit M., additional, Matović, Branko, additional, Matsubara, Ichiro, additional, Matsumoto, Yuji, additional, McKinney, David, additional, Minami, Kimitaka, additional, Morales, Marlon, additional, Morrell, R., additional, Munakata, Hirokazu, additional, Munz, Dietrich, additional, Murai, Shunsuke, additional, Muramatsu, H., additional, Nakagawa, Takashi, additional, Nakao, Shin-ichi, additional, Ogale, Amod A., additional, Ohji, Tatsuki, additional, Okada, Osamu, additional, Osawa, Eiji, additional, Ozaki, Jun-ichi, additional, Petasch, Uwe, additional, Riedel, Ralf, additional, Roy, Rustum, additional, Sakka, Sumio, additional, Sakka, Yoshio, additional, Scott, Cross J., additional, Shibata, Taiju, additional, Shibata, Shuichi, additional, Shin, Woosuck, additional, Shinohara, Yoshikazu, additional, Shioyama, Hiroshi, additional, Sigmund, Wolfgang M., additional, Somiya, Shigeyuki, additional, Soneda, Yasushi, additional, Subhash, Ghatu, additional, Suganuma, Katsuaki, additional, Supancic, P., additional, Suto, Yuko, additional, Suzuki, Setsu, additional, Tagaya, Motohiro, additional, Takahashi, Ryota, additional, Takami, Seiichi, additional, Takenaka, Tadashi, additional, Tanaka, Katsuhisa, additional, Tanaka, Junzo, additional, Terrones, H., additional, Terrones, Mauricio, additional, Togashi, Takanari, additional, Tokita, Masao, additional, Tsurumi, Takaaki, additional, Ueda, Tomoaki, additional, Wakai, Fumihiro, additional, Weinmann, Markus, additional, Yano, Toyohiko, additional, and Zollfrank, Cordt, additional

Published
2013
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