Sintering Behavior of Silver Particles in Electrode for Multilayer Ceramic Substrate

Okada, Atsuyuki; Ogihara, Takashi

doi:10.4028/www.scientific.net/kem.421-422.289

Cited by 3 publications

(4 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When the sintering time was 600 s, the specific resistivity of the silver paste sintered at 700ºC and 900ºC was 2.97 × 10 -8 Ωm and 2.15 × 10 -8 Ωm, respectively. The silver paste exhibited low resistivity of the order of 10 -8 Ωm, which was in agreement with that of the silver paste used for low temperature co-fired ceramics [19,20]. When the sintering time was 3,600 s, the specific resistivity of the silver paste sintered at 700ºC and 900ºC was 1.94 × 10 -8 Ωm and 1.89 × 10 -8 Ωm, respectively.…”

Section: Sintering and Electrical Properties Of Silver Pastesupporting

confidence: 79%

“…The shrinkage of silver paste drastically decreased from 600°C and reached 12 % at 900°C. We have been reported that silver powder with a broad particle size distribution generally led to the large shrinkage [18,19]. In this work, we considered that the shrinkage of silver paste became large because silver powder classified had a broad particle size distribution.…”

Section: Sintering and Electrical Properties Of Silver Pastementioning

confidence: 99%

See 1 more Smart Citation

Characterization of Silver Powder Produced through Water Atomization and RF Plasma Treatment

Arita¹,

Ogihara²,

Kubo³

et al. 2017

Int J Metall Mater Eng

Self Cite

View full text Add to dashboard Cite

Silver powder was produced through water atomization with a pressure of 80 MPa and a flow rate of 220 L/min. Scanning electron microscopy analysis showed that as-prepared silver particles were aggregated and had various types of morphologies such as spherical, spheroidal and irregular. The volume average particle size of as-prepared silver powder was 7.7 μm at the drain rate of 0.024 kg/s. The particle size decreased with decreasing the drain rate. Powder X-ray diffraction revealed that the silver powder with a single phase and high crystallinity was formed. Surface treatment of silver powders classified to 5 μm was performed at 10,000°C by radio-frequency (RF) plasma under argon atmosphere. RF plasma treatment led to the formation of spherical particles from irregular particles. The crystallinity and crystallite of silver powder were increased by RF plasma treatment. X-ray photoelectron spectroscopy showed that the oxygen content in silver particles decreased from 500 ppm to 45 ppm. Thermomechanical analysis revealed that the shrinkage of silver powder reduced by the RF plasma treatment. It was clear that the particle characterization of silver powder was significantly modified by RF plasma treatment. The specific resistivity of silver paste sintered at 900°C exhibited 1.89×10 -8 Ωm.

show abstract

Section: Sintering and Electrical Properties Of Silver Pastesupporting

confidence: 79%

Section: Sintering and Electrical Properties Of Silver Pastementioning

confidence: 99%

Characterization of Silver Powder Produced through Water Atomization and RF Plasma Treatment

Arita¹,

Ogihara²,

Kubo³

et al. 2017

Int J Metall Mater Eng

Self Cite

View full text Add to dashboard Cite

show abstract

“…The coated Ag paste on one side of the precursor induces thermal stress during the whisker growth process. The volume of Ag paste was reported to shrink by 20% at high temperatures due to evaporation of the solvent. , Figure displays the optical and scanning electron microscopy (SEM) images for the (a) as-prepared precursor and (b) Ag paste-coated precursor after annealing for whisker growth. The as-prepared precursor exhibited no remarkable deformation or whisker growth, whereas the paste-coated one was strongly bent and produced whiskers.…”

Section: Resultsmentioning

confidence: 99%

Crystal Growth and High-Pressure Effects of Bi-Based Superconducting Whiskers

Matsumoto¹,

Yamamoto

Takano

et al. 2021

ACS Omega

View full text Add to dashboard Cite

Three growth methods were tested for producing high-transition temperature superconducting Bi 2 Sr 2 Ca n –1 Cu n O 2 n +4+δ whiskers, employing different ways to focus a compressive stress and size effect of the precursors. First, thermographic imaging was used to investigate thermal stress from temperature distribution in the precursors during growth annealing. To enhance thermal stress in the precursors, a thermal cycling method and a Ag-paste coating method were proposed and found to significantly accelerate the whisker growth. The use of pulverized precursors also promoted whisker growth, possibly due to contribution from the vapor–liquid–solid growth mechanism. The obtained whiskers revealed the typical composition, diffraction patterns, and superconducting properties of the Bi-2212 phase. The proposed methods were able to stably produce longer whiskers compared to the conventional method. Using the obtained whiskers, electrical transport measurements under high pressure were successfully performed up to around 50 GPa.

show abstract

“…It was found that the silver paste exhibited low resistivity of the order of 10 ¹8 ³ m, which is in agreement with that of the silver paste used for low-temperature co-fired ceramics. 25) The specific resistivity of the silver paste sintered for 60 min decreased from 2.33 © 10 ¹8 to 2.11 © 10 ¹8 ³ m with increasing sintering temperature. This resulted in the disappearance of pores in the silver paste due to grain growth.…”

Section: Sintering and Electrical Propertiesmentioning

confidence: 94%

Production and characterization of silver powder created using high-pressure water atomization

Ogihara

Kubo

Arita

et al. 2017

J. Ceram. Soc. Japan

Self Cite

View full text Add to dashboard Cite

Silver powders are important for the production of silicon solar cells and low-temperature co-fired ceramics. In this study, a silver powder was produced at a rate of 2 kg/min through water atomization with a water pressure of 80 MPa and water flow rate of 220 L/min. Scanning electron microscopy analysis showed that the silver particles produced were aggregated and had various types of morphologies such as spherical, elliptical, and irregular. The volume average particle size and its standard deviation were 8 and 4.1¯m, respectively. Powder X-ray diffraction revealed that the as-prepared silver powder had a single phase with high crystallinity. The oxygen content in the silver powder measured by electron probe micro analysis was 50 ppm. The silver powder was classified to the size of¯2.5¯m, and the shrinkage of the silver paste was 25.5% at 900°C, comparable to that of the powder obtained by chemical reduction. Electrical measurements revealed that the specific resistivity of the silver paste sintered at 900°C for 60 min was 2.11 © 10 ¹8 ³ m. The silver paste exhibited lower specific resistivity when the sintering temperature was high and sintering time was long.

show abstract

Sintering Behavior of Silver Particles in Electrode for Multilayer Ceramic Substrate

Cited by 3 publications

References 2 publications

Characterization of Silver Powder Produced through Water Atomization and RF Plasma Treatment

Characterization of Silver Powder Produced through Water Atomization and RF Plasma Treatment

Crystal Growth and High-Pressure Effects of Bi-Based Superconducting Whiskers

Production and characterization of silver powder created using high-pressure water atomization

Contact Info

Product

Resources

About