5 Citations (Scopus)

Abstract

We report the development of a ceramic injection moulding (CIM) process to produce complex-shaped structures using high-performance microwave ceramic materials. In particular, we describe the synthesis methods and the structural, chemical and dielectric properties of Ba(Zn1/3Ta2/3)O3 (BZT) doped with Ni and Zr ceramics produced using ceramic injection moulding. Sintering the ceramic injection moulded Ba(Zn1/3Ta2/3)O3 to a relative density of ∼94% was possible at a temperature of 1680 °C and a time of 48 h. The best samples to date exhibit a dielectric constant, εr, of ∼30, a Q value, of ∼31,250 (i.e. tan δ < 3.2 × 10-5) at 2 GHz, and a temperature coefficient of resonance frequency, τf, of 0.1 ppm/°C.

Original languageEnglish (US)
Pages (from-to)3273-3278
Number of pages6
JournalJournal of the European Ceramic Society
Volume26
Issue number15
DOIs
StatePublished - 2006

Fingerprint

Injection molding
Dielectric properties
Chemical properties
Structural properties
Microwaves
Ceramic materials
Permittivity
Sintering
Temperature

Keywords

  • Ba(Zn, Ta)O
  • Dielectrics properties
  • Injection moulding
  • Resonators
  • Tantalates

ASJC Scopus subject areas

  • Ceramics and Composites

Cite this

Structural, chemical and dielectric properties of ceramic injection moulded Ba(Zn1/3Ta2/3)O3 microwave dielectric ceramics. / Liu, Shaojun; Merrick, Vincent A.; Newman, Nathan.

In: Journal of the European Ceramic Society, Vol. 26, No. 15, 2006, p. 3273-3278.

Research output: Contribution to journalArticle

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AU - Liu, Shaojun

AU - Merrick, Vincent A.

AU - Newman, Nathan

PY - 2006

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N2 - We report the development of a ceramic injection moulding (CIM) process to produce complex-shaped structures using high-performance microwave ceramic materials. In particular, we describe the synthesis methods and the structural, chemical and dielectric properties of Ba(Zn1/3Ta2/3)O3 (BZT) doped with Ni and Zr ceramics produced using ceramic injection moulding. Sintering the ceramic injection moulded Ba(Zn1/3Ta2/3)O3 to a relative density of ∼94% was possible at a temperature of 1680 °C and a time of 48 h. The best samples to date exhibit a dielectric constant, εr, of ∼30, a Q value, of ∼31,250 (i.e. tan δ < 3.2 × 10-5) at 2 GHz, and a temperature coefficient of resonance frequency, τf, of 0.1 ppm/°C.

AB - We report the development of a ceramic injection moulding (CIM) process to produce complex-shaped structures using high-performance microwave ceramic materials. In particular, we describe the synthesis methods and the structural, chemical and dielectric properties of Ba(Zn1/3Ta2/3)O3 (BZT) doped with Ni and Zr ceramics produced using ceramic injection moulding. Sintering the ceramic injection moulded Ba(Zn1/3Ta2/3)O3 to a relative density of ∼94% was possible at a temperature of 1680 °C and a time of 48 h. The best samples to date exhibit a dielectric constant, εr, of ∼30, a Q value, of ∼31,250 (i.e. tan δ < 3.2 × 10-5) at 2 GHz, and a temperature coefficient of resonance frequency, τf, of 0.1 ppm/°C.

KW - Ba(Zn, Ta)O

KW - Dielectrics properties

KW - Injection moulding

KW - Resonators

KW - Tantalates

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