NDLI: Chemical Variations in Barium Titanate Powders and Dispersants

Content Provider	Springer Nature Link
Author	Lee, Burtrand I.
Copyright Year	1999
Abstract	Commercial raw materials for multilayer ceramic capacitors—barium titanate (BT) and ammonium polyacrylate (APA) dispersant—were examined for lot-to-lot variations which cause poor reproducibility in BT slips and in capacitor chips. Two lots of BT supplied by a commercial source were different with respect to surface species examined by Fourier-transform infrared spectroscopy, X-ray photoelectron spectroscopy, electrokinetic sonic amplitude and total carbon analysis. It was found that there was more APA dispersant chemisorption on BT when the BT surface was more hydroxylated and less carbonated. For the dispersant, the two lots differed in pH and ammonium ion content. The amount of APA dispersant adsorbed on BT depended more on the ceramic powder surface species than on the chemical differences in APA lots.The electrokinetic sonic amplitude (ESA) and zeta potentials of the two lots of as-received BT were small but positive. The BT lot with more surface hydroxyls exhibited slightly higher zeta potential values. The BT with more carbonate was more stable in terms of aging rate in water. Aging in water increased the positive zeta potential by increasing Ba$^{2+}$ dissolution and adsorption. With the APA dispersant, the BT surface became less positive, but more stable and exhibited an isoelectric point of∼10.6. It can be concluded that the dispersion of BT in the as-dispersed pH range is mainly by steric stabilization with little contribution from electrostatic charges.
Starting Page	53
Ending Page	63
Page Count	11
File Format	PDF
ISSN	13853449
Journal	Journal of Electroceramics
Volume Number	3
Issue Number	1
e-ISSN	15738663
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	1999-01-01
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Polymer Sciences Optical and Electronic Materials Characterization and Evaluation Materials Ceramics, Glass, Composites, Natural Methods Crystallography
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Materials Chemistry Mechanics of Materials Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Copper Compatible Barium Titanate Thin Films for Embedded Passives

Characterization of Barium Titanate: BaTiO$_{3}$ (BT) Ceramics Prepared from Sol-Gel Derived BT Powders

Investigation of Semiconducting Barium Titanate Ceramics by Oxygen Coulometry

Investigation on FTIR spectra of barium calcium titanate ceramics

Dielectric Characteristics and Tunability of Barium Stannate Titanate Ceramics

Processing Effects on the Microstructure and Dielectric Properties of Barium Strontium Titanate (BST) Ceramics

Ferroelectric-to-Paraelectric Phase Transition in Barium Titanate Ceramics Investigated by Pyrocharge Measurements

Giant Piezoresistive Effects in Single Grain Boundaries of Semiconducting Barium Titanate Ceramics*

Donor-Acceptor Charge Complex Formation in Barium Titanate Ceramics: Role of Firing Atmosphere

Chemical Variations in Barium Titanate Powders and Dispersants

Similar Documents

Copper Compatible Barium Titanate Thin Films for Embedded Passives

Characterization of Barium Titanate: BaTiO$_{3}$ (BT) Ceramics Prepared from Sol-Gel Derived BT Powders

Investigation of Semiconducting Barium Titanate Ceramics by Oxygen Coulometry

Investigation on FTIR spectra of barium calcium titanate ceramics

Dielectric Characteristics and Tunability of Barium Stannate Titanate Ceramics

Processing Effects on the Microstructure and Dielectric Properties of Barium Strontium Titanate (BST) Ceramics

Ferroelectric-to-Paraelectric Phase Transition in Barium Titanate Ceramics Investigated by Pyrocharge Measurements

Giant Piezoresistive Effects in Single Grain Boundaries of Semiconducting Barium Titanate Ceramics*

Donor-Acceptor Charge Complex Formation in Barium Titanate Ceramics: Role of Firing Atmosphere

Chemical Variations in Barium Titanate Powders and Dispersants