Zac Hudson | Nagase ChemteX America, LLC.: How does a silver-coated copper system beat the catastrophic oxidation of pure copper inks?
12:48 - 13:59
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How does a silver-coated copper system beat the catastrophic oxidation of pure copper inks?
Pure copper conductive inks are highly prone to oxidation, forming non-conductive oxides that drastically degrade circuit performance over time. To circumvent this, materials scientists are utilizing a novel silver-coated copper particle morphology within a polymer binder system.
By coating a copper core with a thin silver outer shell, the ink leverages the highly conductive nature of silver's oxide layer while utilizing cheap copper for the bulk volume. This hybrid approach prevents the rapid, catastrophic resistivity spikes typical of raw copper during environmental exposure.
This metallurgical compromise maintains acceptable, stable resistivity values close to pure silver formulations while shielding the manufacturing process from extreme precious metal commodity price fluctuations.
In this short video, you can learn:
* The microstructural mechanism behind silver-coated copper conductive particles
* Why silver's conductive oxide layer prevents the degradation issues faced by pure copper inks
* Balancing metallurgical composition to achieve cost savings without sacrificing environmental stability
📋 **Clip Abstract** This clip reveals the core material science behind a low-cost conductive ink that utilizes silver-coated copper particles rather than pure silver. It explains how this hybrid particle structure exploits the conductive oxide of silver to protect the copper core from performance-degrading oxidation.
#SilverCoatedCopper, #ConductiveInks, #CoreShellParticles, #OxidationMitigation, #PrintedElectronics, #AdditiveElectronics
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02:48 - 04:12
Why pay for ultra-low resistivity if your application doesn't actually need it?
Why pay for ultra-low resistivity if your application doesn't actually need it?
Determining whether your circuit design actually demands the high electrical conductivity of traditional silver inks is a critical commercial decision. Nagase ChemteX introduces a threshold of 12 milliohms per square per mil (25.4 microns) to distinguish applications requiring premium-priced pure silver inks from those that can leverage more cost-effective alternatives.
By adopting their alternative CI 1210 ink, manufacturers can unlock immediate raw material cost savings of 20% to 25% per gram. This economic advantage becomes increasingly pronounced as silver commodity market volatility drives raw material prices upward.
Evaluating this performance-to-cost trade-off allows design engineers to optimize their bill of materials without compromising device performance. Applications that tolerate slightly higher electrical resistance can immediately bypass the high cost of pure precious metal formulations.
In this short video, you can learn:
* The technical threshold (12 milliohms/sq/mil) separating premium silver inks from cost-effective alternatives
* How to capture an immediate 20% to 25% reduction in paste costs per gram
* Navigating commodity market pricing risks in flexible hybrid electronics manufacturing
📋 **Clip Abstract** This clip defines the critical performance threshold of 12 milliohms per square per mil that separates high-cost silver inks from cost-effective alternatives. It demonstrates how identifying applications that tolerate moderate resistivity can yield immediate 20% to 25% cost savings per gram.
#ConductiveSilverInk, #SheetResistivity, #ConductivePaste, #SilverInkAlternatives, #PrintedElectronics, #FlexibleHybridElectronics
07:05 - 08:48
Can a low-cost alternative ink actually outperform traditional silver in long-term reliability tests?
Can a low-cost alternative ink actually outperform traditional silver in long-term reliability tests?
Long-term reliability remains a major barrier for alternative conductive inks, but environmental aging studies reveal surprising advantages. In 85°C and 85% relative humidity testing over 1,000 hours—simulating approximately 25 years of operational life—a lower-cost alternative paste demonstrated superior stability over standard silver formulations.
While the alternative CI 1210 ink starts with a slightly higher initial resistivity, its resistance shift after aging was only 11.9 milliohms/square, representing a 64% increase. In contrast, the traditional silver control formulation experienced a drastic 165% change (16.5 milliohms/square increase), which is over 2.5 times worse.
These results challenge the assumption that cheaper materials inherently compromise long-term durability under harsh environments. For applications with dielectric protective overlays, the alternative paste offers a far more stable electrical baseline over its operating lifetime.
In this short video, you can learn:
* The performance of alternative conductive inks during 1,000-hour damp heat (85/85) testing
* Why a lower-cost ink can exhibit a 2.5x lower percentage change in resistivity than traditional silver paste
* How dielectric overlays and environmental aging affect long-term circuit stability
📋 **Clip Abstract** This clip analyzes the 1,000-hour environmental durability of a cost-effective alternative ink compared to a traditional silver paste under damp heat conditions. The data shows that the alternative ink exhibits far superior electrical stability, suffering only a 64% resistance change compared to a 165% spike in the traditional control.
#DampHeatTesting, #ConductiveInks, #SilverAlternatives, #DielectricOverlays, #PrintedElectronics, #FlexibleElectronics