Direct synthesis of varistor-grade doped nanocrystalline ZnO and its densification through a step-sintering technique

S. Anas; R. V. Mangalaraja; Mukundan Poothayal; Sanjeev K. Shukla; S. Ananthakumar

doi:10.1016/j.actamat.2007.06.047

Direct synthesis of varistor-grade doped nanocrystalline ZnO and its densification through a step-sintering technique

S. Anas, R. V. Mangalaraja, Mukundan Poothayal, Sanjeev K. Shukla, S. Ananthakumar

Producción científica: Contribución a una revista › Artículo › revisión exhaustiva

72 Citas (Scopus)

Resumen

A direct synthesis of varistor-grade doped ZnO powder was attempted by simple hydrolysis followed by low-temperature refluxing (80 °C) in aqueous and alcoholic media. Rod like, one-dimensional nanocrystalline doped ZnO powders with crystallite size 24 nm and Brunauer-Emmett-Teller (BET) bulk surface area 22 m² g^-1 were synthesized. Sintering characteristics of these powders were analyzed under step-sintering coupled with rapid heating up to 1050 °C. The microstructural features and I-V characteristics of the step-sintered doped ZnO were compared with composite varistors. The study shows the advantage of the addition of nanosize doped varistor-grade ZnO as well as step-sintering for controlling grain size and improving varistor performance.

Idioma original	Inglés
Páginas (desde-hasta)	5792-5801
Número de páginas	10
Publicación	Acta Materialia
Volumen	55
N.º	17
DOI	https://doi.org/10.1016/j.actamat.2007.06.047
Estado	Publicada - oct. 2007
Publicado de forma externa	Sí

Acceder al documento

10.1016/j.actamat.2007.06.047

Citar esto

@article{19a2bf8dc58d4fdd98cbfc2a95cd108a,

title = "Direct synthesis of varistor-grade doped nanocrystalline ZnO and its densification through a step-sintering technique",

abstract = "A direct synthesis of varistor-grade doped ZnO powder was attempted by simple hydrolysis followed by low-temperature refluxing (80 °C) in aqueous and alcoholic media. Rod like, one-dimensional nanocrystalline doped ZnO powders with crystallite size 24 nm and Brunauer-Emmett-Teller (BET) bulk surface area 22 m2 g-1 were synthesized. Sintering characteristics of these powders were analyzed under step-sintering coupled with rapid heating up to 1050 °C. The microstructural features and I-V characteristics of the step-sintered doped ZnO were compared with composite varistors. The study shows the advantage of the addition of nanosize doped varistor-grade ZnO as well as step-sintering for controlling grain size and improving varistor performance.",

keywords = "Composite varistors, Direct synthesis, Doped zinc oxide, Reflux, Step-sintering",

author = "S. Anas and Mangalaraja, {R. V.} and Mukundan Poothayal and Shukla, {Sanjeev K.} and S. Ananthakumar",

year = "2007",

month = oct,

doi = "10.1016/j.actamat.2007.06.047",

language = "English",

volume = "55",

pages = "5792--5801",

journal = "Acta Materialia",

issn = "1359-6454",

publisher = "Elsevier Ltd.",

number = "17",

}

TY - JOUR

T1 - Direct synthesis of varistor-grade doped nanocrystalline ZnO and its densification through a step-sintering technique

AU - Anas, S.

AU - Mangalaraja, R. V.

AU - Poothayal, Mukundan

AU - Shukla, Sanjeev K.

AU - Ananthakumar, S.

PY - 2007/10

Y1 - 2007/10

N2 - A direct synthesis of varistor-grade doped ZnO powder was attempted by simple hydrolysis followed by low-temperature refluxing (80 °C) in aqueous and alcoholic media. Rod like, one-dimensional nanocrystalline doped ZnO powders with crystallite size 24 nm and Brunauer-Emmett-Teller (BET) bulk surface area 22 m2 g-1 were synthesized. Sintering characteristics of these powders were analyzed under step-sintering coupled with rapid heating up to 1050 °C. The microstructural features and I-V characteristics of the step-sintered doped ZnO were compared with composite varistors. The study shows the advantage of the addition of nanosize doped varistor-grade ZnO as well as step-sintering for controlling grain size and improving varistor performance.

AB - A direct synthesis of varistor-grade doped ZnO powder was attempted by simple hydrolysis followed by low-temperature refluxing (80 °C) in aqueous and alcoholic media. Rod like, one-dimensional nanocrystalline doped ZnO powders with crystallite size 24 nm and Brunauer-Emmett-Teller (BET) bulk surface area 22 m2 g-1 were synthesized. Sintering characteristics of these powders were analyzed under step-sintering coupled with rapid heating up to 1050 °C. The microstructural features and I-V characteristics of the step-sintered doped ZnO were compared with composite varistors. The study shows the advantage of the addition of nanosize doped varistor-grade ZnO as well as step-sintering for controlling grain size and improving varistor performance.

KW - Composite varistors

KW - Direct synthesis

KW - Doped zinc oxide

KW - Reflux

KW - Step-sintering

UR - http://www.scopus.com/inward/record.url?scp=34548673739&partnerID=8YFLogxK

U2 - 10.1016/j.actamat.2007.06.047

DO - 10.1016/j.actamat.2007.06.047

M3 - Article

AN - SCOPUS:34548673739

SN - 1359-6454

VL - 55

SP - 5792

EP - 5801

JO - Acta Materialia

JF - Acta Materialia

IS - 17

ER -

Direct synthesis of varistor-grade doped nanocrystalline ZnO and its densification through a step-sintering technique

Resumen

Acceder al documento

Huella

Citar esto