Hydration of Potassium Tetratitanate Fiber by the KDC Process

Shimizu, Tadao; Yanagida, Hiroaki; HORI, Masayoshi; Hashimoto, Koshiro; Nishikawa, Yasuo

doi:10.2109/jcersj1950.87.1011_565

Cited by 12 publications

(3 citation statements)

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“…Fibrous K 2 O·nTiO 2 powders were synthesized beforehand by the same way as references [9][10][11][12][13][14]. The synthesized K 2 O·nTiO 2 and the other oxide powders were weighed and then mixed in a container with pure water for 24 hours.…”

Section: Experimental Methodsmentioning

confidence: 99%

Synthesis of (K1/2Bi1/2)xBa1−x TiO3 powder with high aspect ratio

Uchikoba

Watanabe

2006

J Electroceram

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Section: Experimental Methodsmentioning

confidence: 99%

Synthesis of (K1/2Bi1/2)xBa1−x TiO3 powder with high aspect ratio

Uchikoba

Watanabe

2006

J Electroceram

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“…8 Among them it is easy to produce K 2 Ti 6 O 13 bers by calcination on a large scale. 9,10 Through calcination K 2 Ti 4 O 9 bers were synthesized at high temperature using K 2 CO 3 and TiO 2 as raw materials. Then K 2 Ti 4 O 9 bers were treated with an acid solution, and an ion exchange process occurred between potassium ion in bers and hydrogen ion in acid solution, to remove potassium ions in the bers.…”

Section: Introductionmentioning

confidence: 99%

Determination of the ion exchange process of K₂Ti₄O₉ fibers at constant pH and modeling with statistical rate theory

Liu

Wang

et al. 2015

RSC Adv.

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The ion exchange kinetics of K2Ti4O9 fibers at constant pH was determined precisely by ionselective electrodes, and activity coefficients of ions in solutions were calculated by Lu-Maurer Equation. It was found that the equilibrium time and TiO2/K2O molar ratio in the solid phase are more sensitive to pH than to water volume. After that, a two-step exchange kinetics model was developed, in which a Statistical Rate Theory base on chemical potential difference between interface was use to describe surface reaction process instead of empirical exponential equation. The model shows that the resistance of the surface reaction step, which includes hydration of K + ions on the surface and their transport in the solid phase, is the main resistance of the ion exchange process.

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“…This fibrous Figure 3 GraIns and polarizeSddomains in material is widely used as structural materials, for : 0; toriewntated potycrystalline;: ;: ;;00example, brake pad of automobiles. The fabrication method is described in some papers [8][9][10][11][12][13]. (1) is the expected reaction of this synthesis.…”

Section: Template Materialsmentioning

confidence: 99%

Study on Lead-Free Electroceramics - Piezoelectric Materials Focusing on Crystalline Orientation -

Uchikoba

2005 4th International Symposium on Environmentally Conscious Design and Inverse Manufacturing

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2. Role and reduction of lead in Leadfree in electroceramics industry is described and electroceramics new fibrous piezoelectric materials are explained as an original work. Reduction of lead has strongly been Different from solder, lead oxide is used for promoted in electroceramic devices. Due to this electroceramic materials instead of metal. Both oxide promotion, the amount of lead has actually decreased. powder and glass forms becomef n nmatenials or aowever, in piezoelectric devices, PZT whose main additives. General role of lead oxide is achievement low material is lead oxide is dominantly used. Although many sintering temperature. As is usual in multilayer ceramic study and development for alternative materials have devices cofiring with low melting point metals such as been done, the deve l hsnt been obtain silver and copper requires low sintering temperature of In this paper, the recent development trend oflead-free In ceramics. In this case, lead oxide in the form of oxide electroceramic industry is reviewed, and then synthesis of powder and glass is quite useful. However, alterative new fibrous piezoelectric materials by the present author method has established because the recent trend of is explained. elimination of lead has improved effectively.Occasionally, lead containing glass is used for glass fit to achieve strong adhesion of terminal electrode with

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Hydration of Potassium Tetratitanate Fiber by the KDC Process

Cited by 12 publications

References 0 publications

Synthesis of (K1/2Bi1/2)xBa1−x TiO3 powder with high aspect ratio

Synthesis of (K1/2Bi1/2)xBa1−x TiO3 powder with high aspect ratio

Determination of the ion exchange process of K₂Ti₄O₉ fibers at constant pH and modeling with statistical rate theory

Study on Lead-Free Electroceramics - Piezoelectric Materials Focusing on Crystalline Orientation -

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Hydration of Potassium Tetratitanate Fiber by the KDC Process

Cited by 12 publications

References 0 publications

Synthesis of (K1/2Bi1/2)xBa1−x TiO3 powder with high aspect ratio

Synthesis of (K1/2Bi1/2)xBa1−x TiO3 powder with high aspect ratio

Determination of the ion exchange process of K2Ti4O9 fibers at constant pH and modeling with statistical rate theory

Study on Lead-Free Electroceramics - Piezoelectric Materials Focusing on Crystalline Orientation -

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Determination of the ion exchange process of K₂Ti₄O₉ fibers at constant pH and modeling with statistical rate theory