Effect of Water in the Synthesis of Nano BaTiO3 Particle Using Potassium Hydroxide

Park, Kug-Hyo; Gu, Sin-Il; Shin, Hyo‐Soon; Yeo, Dong–Hun; Kim, Hyung Sun; Ha, Gook-Hyun

doi:10.14233/ajchem.2013.oh37

Cited by 3 publications

(2 citation statements)

References 3 publications

(3 reference statements)

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“…The base materials used were BaCO 3 (99 %, Daejung C & M Co. Ltd., Korea), TiO 2 (99 %, N & A Materials Co. Inc., USA), KOH (85-100 %, Daejung C & M Co. Ltd., Korea) and KCl (99 %, Daejung C & M Co. Ltd., Korea). The synthesis method of nano BaTiO 3 was the molten salt method reported by Park et al 7 . The initial materials used were the aforementioned…”

Section: Methodsmentioning

confidence: 99%

Synthesis Mechanism of Nano BaTiO3 Particles at Low Temperature by Molten Salt Method

Lee¹,

Shin

Yeo

et al. 2014

Asian J. Chem.

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BaTiO3, a representative ferroelectric material, is used in various electronics industries. Recently, in order to create a thinner dielectric layer based on the trend of making electronic components like MLCC more light weight and smaller in size, many studies to apply nano BaTiO3 particles are being conducted 1. Although broad studies on sintering and dielectric properties are in demand with the expansion of nano dielectric particle application, the synthesis and control of the nano particles is not yet convenient, so there are no sufficient reports available. Manufacturing methods of BaTiO3 powder, including hydrothermal synthesis 2 , oxalate method 3 and solid phase method 4,5 are mainly used in the industry. Various methods to mass synthesize BaTiO3 particles of 150 nm have been commercialized. However, there is no clear synthesis method for dispersed BaTiO3 particles below approximately 20 nm, as well as no sufficient research results reported. In particular, research on nano particle synthesis using the molten salt method 6 that synthesizes nano BaTiO3 particles through the moisture absorption of water under the low temperature of around 150 ºC and atmospheric pressure is lacking.

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Section: Methodsmentioning

confidence: 99%

Synthesis Mechanism of Nano BaTiO3 Particles at Low Temperature by Molten Salt Method

Lee¹,

Shin

Yeo

et al. 2014

Asian J. Chem.

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show abstract

“…. [10,18,19,21,[31][32][33][34][35][36][37] In the case of Li-based salt systems mixed phases and even unreacted reagents were found. Hydroxide ions, in a flux for example, were said to be actively participating in the reaction.…”

Section: Molten-salt Synthesis Of Batiomentioning

confidence: 99%

Texturing of hydrothermally synthesized BaTiO3 in a strong magnetic field by slip casting

Özen

Mertens

Snijkers

et al. 2016

Ceramics International

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Barium titanate powder was processed by slip casting in a rotating strong magnetic field of 9.4 tesla. The orientation factor of the sintered compact was analyzed by the X-ray diffraction technique and the microstructure (grain-size) was analyzed by scanning electron microscope. The hydrothermally prepared barium titanate was used as matrix material and the molten-salt synthesized barium titanate, with a larger particle-size, was used as template for the templated grain-growth process. Addition of large template particles was observed to increase the orientation factor of the sintered cast (5 vol% loading). Template particles acted as starting grains for the abnormal grain-growth process and the average grain-size was increased after sintering. Increasing the solid loading (15 vol%) resulted in a similar orientation factor with a decrease of the average grain-size by more than half. However, addition of templates to the 15 vol% cast had a negative effect on the orientation factor. The impingement of growing particles was stated as the primary cause of particle misorientation resulting in a low orientation factor after sintering. Different heating conditions were tested and it was determined that a slow heating rate gave the highest orientation factor, the smallest average grain-size and the highest relative density.

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Molten-salt synthesis of tetragonal micron-sized barium titanate from a peroxo-hydroxide precursor

Özen

Mertens

Snijkers

et al. 2017

Advanced Powder Technology

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Effect of Water in the Synthesis of Nano BaTiO3 Particle Using Potassium Hydroxide

Cited by 3 publications

References 3 publications

Synthesis Mechanism of Nano BaTiO3 Particles at Low Temperature by Molten Salt Method

Synthesis Mechanism of Nano BaTiO3 Particles at Low Temperature by Molten Salt Method

Texturing of hydrothermally synthesized BaTiO3 in a strong magnetic field by slip casting

Molten-salt synthesis of tetragonal micron-sized barium titanate from a peroxo-hydroxide precursor

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