Corrosion of RoHS-Compliant Surface Finishes in Corrosive Mixed Flowing Gas Environments

Hannigan, K.; Reid, M.; Collins, Maurice N.; Dalton, Eric; Xu, Chen; Wright, B.; Demirkan, Korhan; Opila, R. L.; Reents, W. D.; Franey, J. P.; Fleming, Debbie; Punch, Jeff

doi:10.1007/s11664-011-1799-2

Cited by 16 publications

(6 citation statements)

References 21 publications

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“…On the whole, the energy of interaction between water and monomer molecules increases as MAAc<AAc<MA, in accordance with the acid strength values MAAc<AAc<MA (p K a =4.66, 4.25 and 1.9 for the first stage and 6.5 for the second stage, respectively). A similar correlation between the degree of swelling and its rate was demonstrated for crosslinked hyaluronic acid [33a] …”

Section: Resultssupporting

confidence: 72%

New Bio‐Based Furanic Materials Effectively Absorb Metals from Water and Exert Antimicrobial Activity

Klushin

Кашпарова

Chizhikova

et al. 2021

Chemistry A European J

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Development of sustainable bio‐based materials for removal of toxic contaminants from water is a high priority goal. Novel bio‐based binary and ternary copolymers with enhanced ion‐exchange, adsorption and antibacterial properties were obtained by using plant biomass‐derived diallyl esters of furandicarboxylic acid (FDCA) as crosslinking agents and easily available vinyl monomers. The synthesized copolymer materials showed higher sorption capacities for NiII, CoII and CuII compared to the commercial ion‐exchange resins, and they maintained their high metal adsorption capacities for over 10 cycles of regeneration. The synthesized copolymer gels containing 1–5 wt % of the crosslinker showed excellent water absorption capacities. The synthesized copolymers with 1 % crosslinker content showed swelling ratios high enough to also act as moisture absorbents. Synthesized copolymers with crosslinker content of 10 wt % performed as contact‐active antibacterials by inhibiting the growth of Gram‐positive (S. aureus) and Gram‐negative bacteria (E. coli, K. pneumonia) in suspension tests.

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Section: Resultssupporting

confidence: 72%

New Bio‐Based Furanic Materials Effectively Absorb Metals from Water and Exert Antimicrobial Activity

Klushin

Кашпарова

Chizhikova

et al. 2021

Chemistry A European J

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“…Hannigan et al [121] investigated the studied corrosion products of four lead-free PWB finishes, OSP, ENIG, ImSn, and ImAg, generated in an MFG environment as shown in Fig. 10.…”

Section: Mixed Flowing Gasmentioning

confidence: 99%

Effects of Gaseous and Particulate Contaminants on Information Technology Equipment Reliability—A Review

Saini

Shah

Shahi

et al. 2021

Journal of Electronic Packaging

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Over the last decade, several hyper-scale data center companies such as Google, Facebook, and Microsoft have demonstrated the cost-saving capabilities of airside economization with direct/indirect heat exchangers by moving to chiller-less air-cooled data centers. Under pressure from data center owners, IT equipment OEMs like Dell and IBM are developing IT equipment that can withstand peak excursion temperature ratings of up to 45°C, clearly outside the recommended envelope, and into ASHRAE's A4 allowable envelope. As popular and widespread as these cooling technologies are becoming, airside economization comes with its challenges. There is a risk of pre-mature hardware failures or reliability degradation posed by uncontrolled fine particulate and gaseous contaminants in presence of temperature and humidity transients. This paper presents an in-depth review of the particulate and gaseous contamination-related challenges faced by the modern-day data center facilities that use airside economization. This review summarizes specific experimental and computational studies to characterize the airborne contaminants and associated failure modes and mechanisms. In addition, standard lab-based and in-situ test methods for measuring the corrosive effects of the particles and the corrosive gases, as the means of testing the robustness of the equipment against these contaminants, under different temperature and relative humidity conditions are also reviewed. It also outlines the cost-sensitive mitigation techniques like improved filtration strategies and methods that can be utilized for efficient implementation of airside economization.

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“…However, within the scope of its usual application thickness, it is easy to cause microporous corrosion [ 8 ]. The corrosion behavior of gold-plated components is closely associated with relative humidity (RH), SO 2 [ 9 ], H 2 S [ 10 ], dust particles [ 11 , 12 ], molds, and other factors [ 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Migration Behavior of Copper-Clad Laminate and Electroless Nickel/Immersion Gold Printed Circuit Boards under Thin Electrolyte Layers

et al. 2017

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The electrochemical migration (ECM) behavior of copper-clad laminate (PCB-Cu) and electroless nickel/immersion gold printed circuit boards (PCB-ENIG) under thin electrolyte layers of different thicknesses containing 0.1 M Na2SO4 was studied. Results showed that, under the bias voltage of 12 V, the reverse migration of ions occurred. For PCB-Cu, both copper dendrites and sulfate precipitates were found on the surface of FR-4 (board material) between two plates. Moreover, the Cu dendrite was produced between the two plates and migrated toward cathode. Compared to PCB-Cu, PCB-ENIG exhibited a higher tendency of ECM failure and suffered from seriously short circuit failure under high relative humidity (RH) environment. SKP results demonstrated that surface potentials of the anode plates were greater than those of the cathode plates, and those potentials of the two plates exhibited a descending trend as the RH increased. At the end of the paper, an electrochemical migration corrosion failure model of PCB was proposed.

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Corrosion of RoHS-Compliant Surface Finishes in Corrosive Mixed Flowing Gas Environments

Cited by 16 publications

References 21 publications

New Bio‐Based Furanic Materials Effectively Absorb Metals from Water and Exert Antimicrobial Activity

New Bio‐Based Furanic Materials Effectively Absorb Metals from Water and Exert Antimicrobial Activity

Effects of Gaseous and Particulate Contaminants on Information Technology Equipment Reliability—A Review

Electrochemical Migration Behavior of Copper-Clad Laminate and Electroless Nickel/Immersion Gold Printed Circuit Boards under Thin Electrolyte Layers

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