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Showing 1 to 20 of 626 for “"silicate"”.
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Characterization of calcium-silicate-hydrate and calcium-alumino-silicate-hydrate
… of this thesis were to synthesize calcium silicate hydrate (C-S-H) and calcium aluminosilicate hydrate (C-A-S-H) and characterize their structures with varying Ca/Si ratios and aluminum content. As a secondary objective, carbonation behavior in synthesized C-S-H was studied. C-S-H was …
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Reaction of Beta Dicalcium-Silicate and Tricalcium-Silicate With Carbon-Dioxide and Water
Made available in DSpace on 2014-12-14T15:24:02Z (GMT). No. of bitstreams: 1 7820945.pdf: 5072186 bytes, checksum: 235d4b230b60ce4ad30c164b80ad408e (MD5) Previous issue date: 1978
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Interpreting the 10um astronomical silicate feature
10pm spectra of silicate dust in the diffuse medium towards Cyg 0B2 no. 12 and towards field and embedded objects in the Taurus Molecular Cloud (TMC) were obtained with CGS3 at the United Kingdom Infrared Telescope (UKIRT). Cold molecular-cloud silicates are sampled in quiescent lines of sight …
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Dibarium Silicate as a Hydraulic Cement
Made available in DSpace on 2014-12-10T17:32:33Z (GMT). No. of bitstreams: 1 6408385.pdf: 3487461 bytes, checksum: fa64d410157ef7e77eb3f10a225eb2bf (MD5) Previous issue date: 1964
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Silicate Melt Inclusions in Igneous Petrogenesis
Silicate melt inclusions are ubiquitous in quartz phenocrysts, yet there are few studies of such inclusions from porphyry copper systems. A melt inclusion forms when magma is trapped in a growing phenocryst. If a phenocryst is able to preserve the original parent magma, then accurate information …
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Internal friction of mixed-alkali silicate glasses
"The mixed alkali effect in silicate glasses was examined from internal friction measurements made over the temperature range from -190 to 500⁰C and at a frequency of 0.4 Hz. Supplemental measurements of the activation energy for the different internal friction peaks, dynamic shear modulus, …
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Thermal Transformations in Some Layer Silicate Minerals
Made available in DSpace on 2014-12-04T19:13:19Z (GMT). No. of bitstreams: 1 0004018.pdf: 3823742 bytes, checksum: 9021f0d070a16c286831ba2acd916168 (MD5) Previous issue date: 1952
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X-ray photoelectron spectroscopy of silicate glasses
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1987.
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Bulk coating processes with sodium silicate slurries
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1996.
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Analysis of heat transfer in silicate slags.
Thesis. 1976. Sc.D.--Massachusetts Institute of Technology. Dept. of Materials Science and Engineering.
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Hierarchical layered-silicate-- lamellar triblock copolymer nanocomposites
The fundamental role of the layered-silicates in a styrene-butadiene-styrene triblock copolymer (SBS) as a function of layered-silicate dispersion during deformation was investigated. Predominantly immiscible composites of mixed morphology provided the initial proof that dramatic alteration of the …
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The dissolution of lime in iron silicate melts.
… has been made of the dissolution of lime in iron silicate melts. The experiments were carried out under an inert atmosphere of argon at 1300°C in a vertical tube furnace. A small cylindrical pellet of lime was preheated to the melt temperature before being immersed in the melt contained in an …
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Plasma spraying low thermal expansion alumino-silicate glasses
<p>"Near-stoichiometric cordierite (2MgO-2Al<sub>2</sub>O<sub>3</sub>-5SiO<sub>2</sub>) glasses doped with 6.3, 8.3 and 10.1 weight percent TiO<sub>2</sub> were plasma sprayed onto SiO<sub>2</sub>-based refractory concrete substrates. Substrate temperatures were controlled such that the maximum …
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Physical and Biologic Properties of Calcium Silicate Endodontic Sealers
… RCS had the highest microhardness of the calcium silicate sealers with a value of 10.41 HV. There was no statisticially significant difference in solubility between the tested calcium silicate sealer groups. CONCLUSION: BC Sealer, BioRoot RCS, and BIO-C exhibited the least cytotoxic effects when …
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Calc-Silicate Rocks in the Wollaston Lake Area, Saskatchewan
… marble which occurs as layers bounded by calc-silicate rocks, hornblende biotite rock, and biotite gneiss. Important mineral assemblages in marble are: calcite-diopside-quartz; calcite-diopsioe-biotite:, calcitediopside- idocrase; calcite-dolomite-forsterite-phlogopite: dolomite: calcitesCdPo: …
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Reliability Studies of TiN/Hf-Silicate Based Gate Stacks
Hafnium-silicate based oxides are among the leading candidates to be included into the first generation of high-[Kappa] gate stacks in nano-scale CMOS technology because of their distinct advantages as far as thermal stability, leakage characteristics, threshold stability and low mobility …
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Study of the thermal behaviours of intumescent silicate materials
The fire retardant properties of inorganic silicate based materials were characterised by Thermal, Infrared (IR), Karl Fischer (KF), Mass Spectrometry (MS) and Cone Calorimetry (CC) techniques. Scanning Electron Microscopy (SEM) was also employed to study the sample morphologies. In this study, …
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Biocompatibility and Bioactivity of Calcium Silicate-based Dental Bioceramics
Tricalcium silicate dental bioceramics are bioactive ceramics. They are used to repair and treat iatrogenic, and pathological communications between the oral environment and mesenchymal tissue through tooth structure, or as a retrograde root filling after root resection. They are placed in direct …
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