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Identification of the ohmic-contact formation mechanism in the Au-Te/Au/GaAs system

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Contact formation mechanism for ohmic contacts on n-type GaAs are unclear for most metallizations which generally involve use of Au. Whether increased doping at GaAs side of junction or formation of graded Ga2Te3/GaAs transition layer takes place remains unverified. As doping of Ga2Te3 is reported and similar concept is proposed to hold for Au-Ge/ and Ge/Pd(n-type GaAs) metallizations as well.

Identification of the wear mechanism on WC/C nanostructured coatings.

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Identification tests for metallic coatings

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Spot tests & simple analytical methods incl. identification tests for cadmium, zinc, tin, nickel, chromium, chromate coatings. Chart presents visual scheme for coatings identification. 4 refs (all standards).

Identifying metallic contamination on surfaces.

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A method is described, which enables the simple and cost-efficient identification of particles, it being noted that in order to optimise cleaning processes prior to coating application, it is important to be able to identify metallic particles, and their source. The new machine is an optical microscope combined with automatic material analysis, based on laser-induced breakdown spectroscopy (LIBS). Technical details of the machine and its areas of use are provided.

Identifying paint contaminants & their contribution to coating failures. Pt 2.

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Study of paint failures showed that 27% were due to poor substrate quality, 27% due to paint contamination, 27% due to poor application technique, 16% to poor paint quality and 4% to pretreatment faults. Normal paint quality test methods are discussed - they often fail to reveal the real cause of problems. Use of ATR FT-IR to analyse volatile and dry components of paint, are described. Optical microscopy, used with SEM and elemental analysis (EDX) are described. Contamination can arise during paint application. SEM is shown of microtomed cross-section of 2-layer paint system with aluminium flake.

Identifying true costs of quality in coil coating operation

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Contributions to cost of quality are discussed in relation to internal failures, external failures, rework and labour. Each category is examined to identify and address waste. Measuring operation's cost of quality is good way to drive continuous improvements.

Identity of Passive Film Formed on Aluminium in Lithium-Ion Battery Electrolytes with LiPF6.

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JES

IEC 1249-8-7 Materials for Interconnection Structure - Part 8: Section Specification Set for Non-Conductive Films and Coatings - Section 7: Marking Legend Inks

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If discovered today, vitreous enamel would be a sensation

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Commentary on a coating with 4000 year old history, is many applications and useful properties, incl. some most recent uses which do not involve corrosion resistance.

If Socrates had been a Metal Finish or "Plating and Logic"

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A "Socratic dialogue" between Socrates and "Galvanikus" (a plater) covers process costs, microthrowing power and much else.

IFAT '81' - Largest international environmental fair in the world

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Report on this exhibition.

IFAT '84

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Brief report on 7th international waste conference, Munich, 22-26.5.84.

IFAT '87

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Report on 8th International Waste Treatment exhibition, 19-23.5. 87, Munich.

IFAT '87. Market opportunities in environmental technology

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Note on this exhibition, Munich 17-23.5.87.

IFAT '93 - Report on a Trade Fair

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Report on the world's largest Trade Fair dealing with all aspects of waste, effluent & environmental protection, recycling etc. New developments & trends are highlighted.