Pub Date : 2014-03-01DOI: 10.1002/9781118771327.CH24
S. Stefanovsky, S. Y. Shvetsov, V. V. Gorbunov, A. V. Lekontsev, A. Efimov, I. A. Knyazev, O. I. Stefanovsky, Zen'kovskaya, J. Roach
{"title":"Cold Crucible Vitrification of Hanford HLW Surrogates in Aluminumiron‐ Phosphate Glass","authors":"S. Stefanovsky, S. Y. Shvetsov, V. V. Gorbunov, A. V. Lekontsev, A. Efimov, I. A. Knyazev, O. I. Stefanovsky, Zen'kovskaya, J. Roach","doi":"10.1002/9781118771327.CH24","DOIUrl":"https://doi.org/10.1002/9781118771327.CH24","url":null,"abstract":"","PeriodicalId":83360,"journal":{"name":"Transactions (English Ceramic Circle)","volume":"12 1","pages":"251-264"},"PeriodicalIF":0.0,"publicationDate":"2014-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75209972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-03-01DOI: 10.1002/9781118771464.CH10
Shouta Kitajima, Kiyoshi Kobayashi, T. Higuchi, Y. Sakka
{"title":"Development of New Synthesis Route of Lanthanum Germanate Oxyapatite from Homogeneous Aqueous Solution","authors":"Shouta Kitajima, Kiyoshi Kobayashi, T. Higuchi, Y. Sakka","doi":"10.1002/9781118771464.CH10","DOIUrl":"https://doi.org/10.1002/9781118771464.CH10","url":null,"abstract":"","PeriodicalId":83360,"journal":{"name":"Transactions (English Ceramic Circle)","volume":"61 1","pages":"103-108"},"PeriodicalIF":0.0,"publicationDate":"2014-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89006308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-03-01DOI: 10.1002/9781118771327.CH23
H. Gan, K. Matlack, I. Pegg, I. Joseph, B. W. Bowan, Y. Miura, Norio Kanehira, E. Ochi, Toshiro Oniki, Y. Endo
{"title":"Suppression of Yellow Phase Formation During Japanese HLW Vitrification","authors":"H. Gan, K. Matlack, I. Pegg, I. Joseph, B. W. Bowan, Y. Miura, Norio Kanehira, E. Ochi, Toshiro Oniki, Y. Endo","doi":"10.1002/9781118771327.CH23","DOIUrl":"https://doi.org/10.1002/9781118771327.CH23","url":null,"abstract":"","PeriodicalId":83360,"journal":{"name":"Transactions (English Ceramic Circle)","volume":"141 1","pages":"237-250"},"PeriodicalIF":0.0,"publicationDate":"2014-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73283115","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-03-01DOI: 10.1002/9781118889770.CH11
S. Kitaoka, Tsuneaki Matsudaira, M. Wada, Makoto Tanaka, T. Ogawa, Y. Kagawa
{"title":"Control of Mass‐Transfer Through Grain Boundaries in a Protective Alumina Layer by Dopant Configuration in Advanced EBCS","authors":"S. Kitaoka, Tsuneaki Matsudaira, M. Wada, Makoto Tanaka, T. Ogawa, Y. Kagawa","doi":"10.1002/9781118889770.CH11","DOIUrl":"https://doi.org/10.1002/9781118889770.CH11","url":null,"abstract":"","PeriodicalId":83360,"journal":{"name":"Transactions (English Ceramic Circle)","volume":"23 1","pages":"107-118"},"PeriodicalIF":0.0,"publicationDate":"2014-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90243151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-03-01DOI: 10.1002/9781118889770.CH12
A. Saiki, T. Hashizume
{"title":"Fabrication of K2Ta2O6 Films by Hydrothermal Method and Their Optical Property","authors":"A. Saiki, T. Hashizume","doi":"10.1002/9781118889770.CH12","DOIUrl":"https://doi.org/10.1002/9781118889770.CH12","url":null,"abstract":"","PeriodicalId":83360,"journal":{"name":"Transactions (English Ceramic Circle)","volume":"300 1","pages":"119-125"},"PeriodicalIF":0.0,"publicationDate":"2014-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77103198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2014-03-01DOI: 10.1002/9781118771587.CH16
M. Rahaman, Xin Liu, B. Bal
{"title":"Development of Bioactive Glass Scaffolds for Structural Bone Repair","authors":"M. Rahaman, Xin Liu, B. Bal","doi":"10.1002/9781118771587.CH16","DOIUrl":"https://doi.org/10.1002/9781118771587.CH16","url":null,"abstract":"","PeriodicalId":83360,"journal":{"name":"Transactions (English Ceramic Circle)","volume":"159 1","pages":"167-178"},"PeriodicalIF":0.0,"publicationDate":"2014-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73123056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-08-23DOI: 10.1002/9781118751176.CH6
J. Matyáš, D. Jansik, A. T. Owen, Carmen P. Rodriguez, Jesse B. Lang, A. Kruger
The major factor limiting waste loading in continuous high-level radioactive waste (HLW) melters is an accumulation of particles in the glass discharge riser during a frequent and periodic idling of more than 20 days. An excessive accumulation can produce robust layers a few centimeters thick, which may clog the riser, preventing molten glass from being poured into canisters. Since the accumulation rate is driven by the size of particles we investigated with x-ray microtomography, scanning electron microscopy, and image analysis the impact of spinel forming components, noble metals, and alumina on the size, concentration, and spatial distribution of particles, and on the accumulation rate. Increased concentrations of Fe and Ni in the baseline glass resulted in the formation of large agglomerates that grew over the time to an average size of ~185+-155 {mu}m, and produced >3 mm thick layer after 120 h at 850 deg C. The noble metals decreased the particle size, and therefore significantly slowed down the accumulation rate. Addition of alumina resulted in the formation of a network of spinel dendrites which prevented accumulation of particles into compact layers.
{"title":"Impact of Particle Agglomeration on Accumulation Rates in the Glass Discharge Riser of HLW Melter","authors":"J. Matyáš, D. Jansik, A. T. Owen, Carmen P. Rodriguez, Jesse B. Lang, A. Kruger","doi":"10.1002/9781118751176.CH6","DOIUrl":"https://doi.org/10.1002/9781118751176.CH6","url":null,"abstract":"The major factor limiting waste loading in continuous high-level radioactive waste (HLW) melters is an accumulation of particles in the glass discharge riser during a frequent and periodic idling of more than 20 days. An excessive accumulation can produce robust layers a few centimeters thick, which may clog the riser, preventing molten glass from being poured into canisters. Since the accumulation rate is driven by the size of particles we investigated with x-ray microtomography, scanning electron microscopy, and image analysis the impact of spinel forming components, noble metals, and alumina on the size, concentration, and spatial distribution of particles, and on the accumulation rate. Increased concentrations of Fe and Ni in the baseline glass resulted in the formation of large agglomerates that grew over the time to an average size of ~185+-155 {mu}m, and produced >3 mm thick layer after 120 h at 850 deg C. The noble metals decreased the particle size, and therefore significantly slowed down the accumulation rate. Addition of alumina resulted in the formation of a network of spinel dendrites which prevented accumulation of particles into compact layers.","PeriodicalId":83360,"journal":{"name":"Transactions (English Ceramic Circle)","volume":"127 2","pages":"59-68"},"PeriodicalIF":0.0,"publicationDate":"2013-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91459358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-07-01DOI: 10.1002/9781118744109.CH34
Yuya Ito, M. Moriya, W. Sakamoto, T. Yogo
{"title":"Fabrication and Improvement of the Properties of Mn‐Doped Bismuth Ferrite—Barium Titanate Thin Films","authors":"Yuya Ito, M. Moriya, W. Sakamoto, T. Yogo","doi":"10.1002/9781118744109.CH34","DOIUrl":"https://doi.org/10.1002/9781118744109.CH34","url":null,"abstract":"","PeriodicalId":83360,"journal":{"name":"Transactions (English Ceramic Circle)","volume":"24 3 1","pages":"313-319"},"PeriodicalIF":0.0,"publicationDate":"2013-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82761843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-01-01DOI: 10.1002/9781118889770.CH15
T. Alomayri, S. Ahmed, I. Low
Fly-ash based geopolymer composites reinforced with cotton fabric (CF) and containing Ordinary Portland cement (OPC) have been fabricated and investigated in terms of x-ray diffraction, scanning electron microscopy and mechanical properties. Results indicated that the mechanical properties of geopolymers generally increased as a result of OPC addition. The addition of OPC also enhanced the fibre-matrix adhesion and led to geopolymer composites with improved strength because of the formation of calcium silicate hydrate (C-S-H) gel which filled the voids and pores within the matrix. However, SEM images of fracture surfaces revealed that OPC addition hindered the toughening mechanism by limiting the prevalence of fibre pull out. As the OPC content increases, the density of geopolymer composites increases by virtue of a reduction in porosity via the formation of C-S-H gels.
{"title":"Characterization of cotton fabric reinforced geopolymer composites modified with Portland cement","authors":"T. Alomayri, S. Ahmed, I. Low","doi":"10.1002/9781118889770.CH15","DOIUrl":"https://doi.org/10.1002/9781118889770.CH15","url":null,"abstract":"Fly-ash based geopolymer composites reinforced with cotton fabric (CF) and containing Ordinary Portland cement (OPC) have been fabricated and investigated in terms of x-ray diffraction, scanning electron microscopy and mechanical properties. Results indicated that the mechanical properties of geopolymers generally increased as a result of OPC addition. The addition of OPC also enhanced the fibre-matrix adhesion and led to geopolymer composites with improved strength because of the formation of calcium silicate hydrate (C-S-H) gel which filled the voids and pores within the matrix. However, SEM images of fracture surfaces revealed that OPC addition hindered the toughening mechanism by limiting the prevalence of fibre pull out. As the OPC content increases, the density of geopolymer composites increases by virtue of a reduction in porosity via the formation of C-S-H gels.","PeriodicalId":83360,"journal":{"name":"Transactions (English Ceramic Circle)","volume":"28 1","pages":"155-167"},"PeriodicalIF":0.0,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72803133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-11-07DOI: 10.1002/9781118511435.CH13
J. Matyáš, A. Huckleberry, Carmen P. Rodriguez, J. Vienna, A. Kruger
Historically, high-level waste (HLW) glasses have been formulated with a low liquideus temperature (T{sub L}), or temperature at which the equilibrium fraction of spinel crystals in the melt is below 1 vol % (T{sub 0.01}), nominally below 1050 C. These constraints cannot prevent the accumulation of large spinel crystals in considerably cooler regions ({approx} 850 C) of the glass discharge riser during melter idling and significantly limit the waste loading, which is reflected in a high volume of waste glass, and would result in high capital, production, and disposal costs. A developed empirical model predicts crystal accumulation in the riser of the melter as a function of concentration of spinel-forming components in glass, and thereby provides guidance in formulating crystal-tolerant glasses that would allow high waste loadings by keeping the spinel crystals small and therefore suspended in the glass.
{"title":"Empirical Model for Formulation of Crystal‐Tolerant HLW Glasses","authors":"J. Matyáš, A. Huckleberry, Carmen P. Rodriguez, J. Vienna, A. Kruger","doi":"10.1002/9781118511435.CH13","DOIUrl":"https://doi.org/10.1002/9781118511435.CH13","url":null,"abstract":"Historically, high-level waste (HLW) glasses have been formulated with a low liquideus temperature (T{sub L}), or temperature at which the equilibrium fraction of spinel crystals in the melt is below 1 vol % (T{sub 0.01}), nominally below 1050 C. These constraints cannot prevent the accumulation of large spinel crystals in considerably cooler regions ({approx} 850 C) of the glass discharge riser during melter idling and significantly limit the waste loading, which is reflected in a high volume of waste glass, and would result in high capital, production, and disposal costs. A developed empirical model predicts crystal accumulation in the riser of the melter as a function of concentration of spinel-forming components in glass, and thereby provides guidance in formulating crystal-tolerant glasses that would allow high waste loadings by keeping the spinel crystals small and therefore suspended in the glass.","PeriodicalId":83360,"journal":{"name":"Transactions (English Ceramic Circle)","volume":"1 1","pages":"121-126"},"PeriodicalIF":0.0,"publicationDate":"2012-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75010052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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