Effect of Agitation on Crystallization Behavior of CaO–SiO2–R2O (R = Li, Na, or K) System Characterized by Electrical Capacitance Measurement
スポンサーリンク
概要
- 論文の詳細を見る
The effect of agitation on the crystallization behavior of molten 50CaO–50SiO2 and 45CaO–45SiO2–10R2O (R = Li, Na, or K, mol%) fluxes were systematically investigated by the measurement of their electrical capacitance over a wide temperature range from liquid region to well below the liquidus temperature. It is well known that the electrical capacitance of liquids is generally much higher than that of solids owing to the differences in their respective polarization mechanisms. These differences were exploited as a sensitive indicator of the crystallization of molten calcium silicates in an experimental furnace equipped with an electrical capacitance measuring system. The system comprised a Pt-based alloy crucible and a rotating rod that allowed evaluation of the effect of agitation generated by the rod, connected to a capacitance meter (LCR meter).As expected, at a particular temperature, the electrical capacitance of the molten calcium silicates underwent a precipitous decrease by roughly three orders of magnitude, which was dependent on the chemical composition. This indicated the presence of crystallization and this was confirmed by corresponding microstructural characterization. It was also found that, for the measurements acquired with rotating rod agitation, the temperatures at which the capacitance underwent the sharp decrease were higher than that identified without the agitation. This suggests that the agitation effect induced by the rotating rod accelerates the crystallization of molten calcium silicates.
著者
-
Saito Noritaka
Department Of Materials Science And Engineering Graduate School Of Engineering Kyushu University
-
Sukenaga Sohei
Department Of Materials Science And Engineering Kyushu University
-
Nakashima Kunihiko
Department Of Materials Process Engineering Kyushu University
-
Ohta Yoshio
Department Of Anesthesia Faculty Of Medicine University Of Tokyo
-
Kusada Kakeru
Department of Materials Science and Engineering, Kyushu University
関連論文
- IS4-06 A child with simple ulcer of the cecum effectively treated with infliximab.(Respiratory System/Emergency,Share Smiles with Sick Children, Dreams and Innovation for Pediatric Surgery)
- Report on the computer software contest at the 43rd Congress of the Japan Society of Anesthesiology
- Viscosities of CaO-SiO_2-Al_2O_3-(R_2O or RO) Melts
- Influence of Slag Composition on Slag-Iron Interfacial Tension
- Recovery rate of chromium from stainless slag by iron melts
- Reduction Rate of Cr_2O_3 in a Solid Powder State and in CaO-SiO_2-AI_2O_3-CaF_2 Slags by Fe-C-Si Melts
- Interfacial Tension between Molten Iron and CaO-SiO_2 Based Fluxes
- Wetting and Penetration Behavior of Calcium Ferrite Melts to Sintered Hematite
- Viscosity Measurement of Calcium Ferrite Based Slags during Structural Relaxation Process
- Penetration Behavior of Calcium Ferrite Melts into Hematite Substrate
- Glass-Metal Continuous Functionally Gradient Materials for Reflector Lamp
- Viscosity and Surface Tension Measurements of RE_2O_3-MgO-SiO_2 (RE=Y, Gd, Nd and La) Melts
- Basic Analysis of Dynamic Study in Cases of Hepatocellular Carcinoma Using Inversion Recovery Snap Shot FLASH MR Imaging with Gd - DTPA
- Formation Rate of Calcium Ferrite Melt Focusing on SiO_2 and Al_2O_3 Component
- Density and Surface Tension of CaO–SiO2–Al2O3–R2O (R=Li, Na, K) Melts
- Reconsideration on Al Coordination in CaO-SiO_2-Al_2O_3-(R_2O or RO) Glasses by Using High Field Solid-State ^Al NMR Spectroscopy
- Transient renal tubular dysfunction in a patient with severe asthmatic attack treated with sevoflurane
- Halothane augments the interaction between succinylcholine and pancuronium
- Effect of Li_2O Addition on Crystallization Behavior of CaO-Al_2O_3-MgO Based Inclusions
- Effect of Agitation on Crystallization Behavior of CaO–SiO2–R2O (R = Li, Na, or K) System Characterized by Electrical Capacitance Measurement
- Effect of Oxidation State of Iron Ions on the Viscosity of Alkali Silicate Melts
- The Therapeutic Effect of Several Anti-hypertensive Drugs and Diet on M-SHRSP:Changes in Life Spans, Blood Pressures, Plasma Hormones, Fundus Oculi and Internal Organs. (Second report)
- Hypertensive Papilledema in M-Strain Stroke-Prone Spontaneously Hypertensive Rats
- Ophthalmological Studies on the M-Strains of Stroke-Prone Spontaneously Hypertensive Rat
- Findings in the blood vessels of the eyes, brains, kidneys, and other organs of M-SHRSP
- The Therapeutic Effects of Several Anti-hypertensive Drugs and Diet on M-SHRSP:Changes in Life Spans, Blood Pressures, Plasma Hormones, Fundus Oculi and Internal Organs
- Fluorescein angiographic changes in generalized narrowing or caliber irregularity of retinal arteriole in M-SHRSP
- The effects of certain antihypertensive drugs and diet on M-SHRSP:Prevention and therapeutic effects when administered at different stages of life
- The Effects of Several Anti-hypertensive Drugs on Vascular Changes to Organs on M-SHRSP and SHRSP
- Changes in plasma aldosterone and other phenomena in M-SHRSP, SHRSP and SHR
- The therapeutic effects of SQ 29, 852 and manidipine on M-SHRSP with cerebrovascular lesions:General progress following treatment. (First report)
- The relation between long-term administration of SQ 29, 852 and manidipine and healing angionecrosis in M-SHRSP and SHRSP
- The therapeutic effects of SQ 29, 852 and manidipine on M-SHRSP with cerebrovascular lesions:Brain and organ vascular changes (Second report)
- Apoptosis in the kidney of malignant hypertensive rats (M-SHRSP)
- Vascular lesions produced by M-SHRSP and SHRSP renal cortical extract
- Distribution of Calcium in the Media of the Rat Aorta
- EEG power spectrum changes associated with the increase in the blood pressure
- Effects of Captopril on Plasma and Renal Renin Activity, and Plasma Aldosterone in M-SHRSP
- Further Observations on Blood Pressure, Incidence of Stroke Lesions and Other Characteristics of M-SHRSP and M-SHRSP Crossbred Offspring. Third Report. Offspring Crossbred from M-SHRSP and Spontaneously Hypercholesterolemic Rats (SHC)
- A scanning electron-microscopic study of pituitary vascular casts in M-SHRSP, SHRSP, SHR B2 and WKY
- Hypertensive Vascular Changes in the Optic Nerve of M-SHRSP
- Renal Effect of A Calcium Antagonist (KW-3049) in M-SHRSP
- Relation of pathological changes to EMGs evoked by magnetic stimulation of brain and spinal cord in the hypertensive rats
- Characteristics of Hyper T-C with hypertension, hypercholesterolemia and enlarged kidneys
- Characteristics of Slow Waves in Malignant Stroke-Prone SHR Electroencephalogram
- The effects of ACE inhibitors and calcium antagonists on hypertensive vascular lesions
- Selection of Colonies of Rats with Hypertension and Hypercholesterolemia as well as Aortic Calcification
- The therapeutic effect of imidapril on established cerebrovascular lesions in M-SHRSP:Successive MRI observations of the healing process
- Lung metastasis from an ovarian granulosa cell tumor 36 years after the initial diagnosis : report of a case
- Prognostic classification of thyroid follicular cell tumors using Ki-67 labeling index: Risk stratification of thyroid follicular cell carcinomas [Review]