Effects of oxide additives on sheet resistance of W thick-film conductor

Liang, Tongxiang; Sun, Wenzhen; Wang, Y. H.; Li, H. D.; Wu, Qixin; Yan, Yi

doi:10.1007/bf00355919

Cited by 11 publications

(3 citation statements)

References 3 publications

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“…To create brazed lead capable of withstanding a stronger force, industries typically use different metal paste formulations to print the conductive lines and electrodes during actual production, thereby ensuring that the brazed leads at the MCH electrode can resist the force in the direction perpendicular to the surface of the sample, which results in a complicated process and makes it difficult to improve the production efficiency. To solve this problem, many researchers have improved the sealing strength of metals and ceramics by adding an inorganic binder paste to the metal paste . Tamotsu Ueyama et al published a conductive paste formulation for metallizing 96 wt% alumina ceramics.…”

Section: Introductionmentioning

confidence: 99%

“…The average sealing strength of the sample after being sintered at a temperature of 1600°C and under a reducing atmosphere was 5 MPa. Liang et al studied the resistance of a thick tungsten film and found that after adding 15 wt% Y 2 O 3 as an inorganic binder paste to the tungsten paste, the strength of the sample sealing reached 65 MPa. Liu et al sealed the metal and alumina ceramics using the Mo‐Mn method, adding MnO, Al 2 O 3 , and SiO 2 to the metal paste to improve the sealing strength of the sample, and increased the average shear strength of the sample to 95 MPa.…”

Section: Introductionmentioning

confidence: 99%

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Enhancement of bonding strength between lead wires and ceramic matrix of metal ceramic heater

Zhu

Liu

Yan

et al. 2019

Int J Applied Ceramic Tech

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In recent years, metal ceramic heaters (MCHs) have become widely used in daily life and industrial applications. This paper introduces a method for producing an MCH with high bonding strength of the bonding wires by adding oxide additives (Al 2 O 3 , SiO 2 , and MgO) to a metal slurry. Pilot experiments were carried out at 1600°C under a protective atmosphere. The results indicate that the temperature coefficient How to cite this article: Zhu F, Liu H, Yan B, Deng T. Enhancement of bonding strength between lead wires and ceramic matrix of metal ceramic heater. Int J Appl Ceram Technol. 2019;16:2245-2253. https ://doi.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Enhancement of bonding strength between lead wires and ceramic matrix of metal ceramic heater

Zhu

Liu

Yan

et al. 2019

Int J Applied Ceramic Tech

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“…Glass, which could soften into a liquid medium at its melting point, is a cheap and effective sintering aid in liquid phase sintering. Single oxides and glass additives have successfully lowered the sintering temperatures of some conductive metal thick films like silver [13], copper [14] and tungsten [15]. Although there are some reports on LNC as a thick film electrode in SOFC [7,12] and for capacitors [16], and as a thin film electrode for ferroelectric and piezoelectric films [17], few mentioned the lowering of sintering temperature of LNC through liquid-phase sintering.…”

Section: Introductionmentioning

confidence: 99%

Conducting perovskite LaNi0.6Co0.4O3 ceramics with glass additions

2006

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LaNi 0.6 Co 0.4 O 3 (LNC) is a perovskite-type conducting ceramic oxide, which is an ideal electrode layer for perovskite ferroelectric and piezoelectric thin and thick film devices, owing to its unique crystal structure that can facilitate film growth and improve fatigue behavior. When used for thick films, however, one of the drawbacks is its high sintering temperature of above 1200 • C, which can lead to severe inter-diffusion. In an attempt to reduce the sintering temperature of LNC without substantially deteriorating the electrical properties, we have investigated the effects of doping LNC with an appropriate glass addition. LNC powder was synthesized through a solid state reaction process. Varying amounts of glass compositions were then introduced, in order to study their effects on densification, microstructure and electrical properties of LNC. The glass compositions exhibited a strong effect on the sintering behaviors and microstructure, where the density after sintering was improved with increasing amount of glass addition. While the electrical conductivity was adversely affected by an increasing amount of glass addition, the composition with optimal glass addition showed a lowered sintering temperature of 950 • C, and at the same time maintained a high conductivity of 117 S cm −1 .

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Nucleation and Precipitation Strengthening in Dilute Al-Ti and Al-Zr Alloys

Knipling

Dunand

Seidman

2007

Metall Mater Trans A

177

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Two conventionally solidified Al-0.2Ti alloys (with 0.18 and 0.22 at. pct Ti) exhibit no hardening after aging up to 3200 hours at 375°C or 425°C. This is due to the absence of Al 3 Ti precipitation, as confirmed by electron microscopy and electrical conductivity measurements. By contrast, an Al-0.2Zr alloy (with 0.19 at. pct Zr) displays strong age hardening at both temperatures due to precipitation of Al 3 Zr (L1 2 ) within Zr-enriched dendritic regions. This discrepancy between the two alloys is explained within the context of the equilibrium phase diagrams: (1) the disparity in solid and liquid solubilities of Ti in a-Al is much greater than that of Zr in a-Al; and (2) the relatively small liquid solubility of Ti in a-Al limits the amount of solute retained in solid solution during solidification, while the comparatively high solid solubility reduces the supersaturation effecting precipitation during post-solidification aging. The lattice parameter mismatch of Al 3 Ti (L1 2 ) with a-Al is also larger than that of Al 3 Zr (L1 2 ), further hindering nucleation of Al 3 Ti. Classical nucleation theory indicates that the minimum solute supersaturation required to overcome the elastic strain energy of Al 3 Ti nuclei cannot be obtained during conventional solidification of Al-Ti alloys (unlike for Al-Zr alloys), thus explaining the absence of Al 3 Ti precipitation and the presence of Al 3 Zr precipitation.

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Effects of oxide additives on sheet resistance of W thick-film conductor

Cited by 11 publications

References 3 publications

Enhancement of bonding strength between lead wires and ceramic matrix of metal ceramic heater

Enhancement of bonding strength between lead wires and ceramic matrix of metal ceramic heater

Conducting perovskite LaNi0.6Co0.4O3 ceramics with glass additions

Nucleation and Precipitation Strengthening in Dilute Al-Ti and Al-Zr Alloys

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