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  • Articles  (7)
  • MCM  (4)
  • alloy  (3)
  • 1995-1999  (7)
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  • 1950-1954
  • 1997  (7)
  • Electrical Engineering, Measurement and Control Technology  (7)
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  • Articles  (7)
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Years
  • 1995-1999  (7)
  • 1990-1994
  • 1985-1989
  • 1960-1964
  • 1950-1954
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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of applied electrochemistry 27 (1997), S. 1198-1206 
    ISSN: 1572-8838
    Keywords: alloy ; amorphous ; anomalous ; hydrogen ; iron ; nickel ; phosphorus ; plating
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract In this study we have investigated the electrodeposition of amorphous iron–nickel–phosphorus alloys from a sulfate electrolyte. Fe-Ni alloys are known to exhibit an ’anomalous‘ type of plating behaviour in which deposition of the less noble metal is favoured. We have found that the codeposition of phosphorus from hypophosphite in the electrolyte led to a reversal to a ’normal‘ behaviour. This reversal was due both to the suppression of iron and enhancement of nickel partial currents. The overall deposition process is dominated by the hydrogen evolution reaction. This is exacerbated by the low pH needed to codeposit sufficient phosphorus to achieve an amorphous structure.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of applied electrochemistry 28 (1997), S. 89-95 
    ISSN: 1572-8838
    Keywords: zinc ; cobalt ; alloy ; electrodeposition ; interphase layer ; electrochemical quartz crystal microgravimetry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract The initial stages of both Zn–Co and Zn electrodeposition were investigated by electrochemical quartz crystal microgravimetry (EQCM). The initial electrode mass growth, determined under both pulse and constant current conditions, was much higher than predicted by Faraday's law. This was explained in terms of the precipitation of scarcely soluble compounds of zinc on an electrode surface. The EQCM data confirm that the hydroxide suppression mechanism explains the anomalous Zn and Co codeposition. A nonuniform adsorption of brightener (benzalaceton) on the profiled surface was concluded on the basis of plating distribution investigations. The additive adsorbs to a greater extent on the surface projections.
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Journal of applied electrochemistry 28 (1997), S. 96-102 
    ISSN: 1572-8838
    Keywords: alloy ; Inconel-600 ; surface modification
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract In this study, Inconel-600 (Ni–Cr–Fe alloy) was modified by repetitive potential cycling in 1M NaOH solution. This procedure induced the growth of a hydrous oxide film, following the same mechanism as previously reported for pure nickel in alkaline solution under similar experimental conditions. The electrode, modified by 30 repetitive potential cycles, exhibited about one order of magnitude lower current density in both the active and passive ranges of the anodic polarization curve. Selective dissolution of nickel and iron in acid solution was determined by rotating ring–disc electrode measurements. This process resulted in chromium enrichment as shown by use of X-ray electron spectroscopy. The proposed model for the enhanced stability of the modified electrode agrees with the percolation model of passivity of stainless steels and Fe–Cr alloys.
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Journal of electronic testing 10 (1997), S. 39-53 
    ISSN: 1573-0727
    Keywords: MCM ; testing ; smart substrate ; cost model
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract This paper presents a cost-based assessment of the effectiveness of Smart Substrate MCM Systems. A Smart Substrate MCM System is one in which the substrate contains active circuitry for carrying out testing functions. The feasibility of using this approach is investigated. The Smart Substrate strategy is compared to an alternative approach based on the assumption that system components are perfect (“Known Good Die (KGD)” approach). The obtained results identify the domain of applicability of Smart substrate MCMs and point to limitations of the KGD approach.
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Journal of electronic testing 10 (1997), S. 55-63 
    ISSN: 1573-0727
    Keywords: electron-beam testing ; short ; open ; MCM ; printed circuit board
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract Electron beam probing is applied for test and analysis of miniaturisedMCM structures. Wiring structures are tested for shorts and opens while fullyassembled MCMs are analysed in order to identify process or design problems[1, 2]. An electron beam short/open tester for laminated substrates has beendeveloped and installed. It allows the test of substrates up to a size of300 × 300 mm2 with a spot size ofbelow 30 μm without mechanical movement. The system is automated for routineapplication in the fabrication line. Electron beam probe stations are common tools for design verification and debugging ofintegrated circuits. This type of system was adapted to MCMrequirements. The travel range was extended to 80 × 100 mm2 to allow for waveform measurements anddiagnostics.
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Journal of electronic testing 10 (1997), S. 119-125 
    ISSN: 1573-0727
    Keywords: Boundary-Scan ; Multichip Module ; MCM ; interconnect testing ; manufacturing defects ; fault diagnosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract Much has already been written concerning the IEEE 1149.1Boundary-Scan standard and its application to the detection ofmanufacturing defects [1–3]. However, when circuits such as Multichip Modules (MCMs) which are difficult and expensiveto repair are involved, much more is required of adiagnostic engine than the mere detection of a defect. The cost ofthe dice on a module make it imperative that the diagnostic procedures implemented by a tester be exact. It is not enough tojust state that “Node ‹m› isshorted to node ‹n›”, or that “Node ‹p› is stuck at1”, as is frequently the case with printed-circuit boarddiagnostics. MCM diagnostics must examine the data returned fromthe test and, as far as is possible, state not only the symptom ofthe fault, but also its exact cause and location. This articlepresents a set of formalized diagnostic rules which will, wheneverpossible, determine the symptom, cause, and location of amanufacturing defect.
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Journal of electronic testing 10 (1997), S. 137-149 
    ISSN: 1573-0727
    Keywords: simulation ; yield ; SMT ; MCM ; board ; test ; DFT ; DFM
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract Simulation techniques used in the Manufacturing Test SIMulator(MTSIM) are described. MTSIM is a Concurrent Engineering tool used tosimulate the manufacturing test andrepair aspects of boards and MCMs from design concept through manufacturing release. MTSIM helps designers select assemblyprocess, specify Design For Test (DFT) features, select board testcoverage, specify ASIC defect level goals, establish productfeasibility, and predict manufacturing quality and cost goals. A newyield model for boards and MCMs which accounts for theclustering of solder defects is introduced and used topredict the yield at each test step. In addition, MTSIMestimates the average number of defects per board detected at eachtest step, and estimates costs incurred in test execution, faultisolation and repair. MTSIM models were validated withhigh performance assemblies at Hewlett-Packard (HP).
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