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  • MICRO:Product Technology News (Oct. '98, p.110)
    operates on "house" nitrogen; optional housing for attaching a nitrogen canister is available. Fill time is 38 seconds, and pressurization range is 1 5 psi. The microenvironment comprises a base housing and a wafer chamber. The unit, which accommodates a standard cassette, has two handles
  • Thermomechanical Working of AL-6XN© Alloy for High Strength Corrosion Resistant Applications (.pdf)
    AL-6XN (R) alloy is a low carbon, high purity nitrogen bearing "super-austenitic" stainless alloy. The high strength and corrosion resistance of annealed AL-6XN alloy make it a better choice than conventional duplex stainless steels and a cost-effective alternative to more expensive nickel-base
  • The Case for Specified Ranges of Interstitial Elements and Iron in Titanium Welding Filler Metal (.pdf)
    The mechanical properties of the unalloyed titanium grades are determined by the content of interstitial elements, oxygen, nitrogen, and carbon, and iron. This paper reviews the chemistry of AWS Specifications commercially produced filler metals. Strength corresponding to Oxygen Equivalency is used
  • Qualification of Stepper Gas
    contamination specifications. Purge gases used to keep the optics clean, such as high-purity nitrogen and compressed air, are themselves a potential source of contamination. Therefore, stepper manufacturers have set stringent limits on impurity concentrations in the purge gases. Key contaminants
  • Spectroscopic Simulation from Recent Structural Models of Eumelanin
    . Eumelanins, black and dark-brown nitrogen containing pigments, form a sub-class of the melanins and are also considered to be photoprotective, as evidenced by an optical absorption spectrum which matches the action spectrum for tissue damage. Unfortunately, an adequate explanation of the eumelanin
  • The push toward lifetime lubes
    for solvent refining and hydrocracking. A catalytic dewaxing step follows hydrocracking to convert waxy, straight-chain paraffins to branched-chain paraffins with lower pour points. (1) Remove sulfur, nitrogen, and oxygen impurities from crude oil. (2) Convert aromatic hydrocarbons to cycloparaffins
  • MICRO: Critical Materials
    Franco Blundo, Manfredi Alberghina, and Marcello Frazzica, Numerous studies have been performed on reducing perfluorocarbon (PFC) emissions from chemical vapor deposition (CVD) chamber-cleaning processes. In new-generation tools, nitrogen trifluoride, a low-emission chamber-cleaning gas, is widely
  • Back to the future with copper brazing
    alloys don't lose strength after brazing. * Brazing pastes and foils alloy with base metals to form joints. * 650 C brazing in nitrogen forms strong, reliable heat-exchanger cores. , has a CuproBrazing Handbook, video explanation, and supplier listing. "A cooling core of copper-brass could finally

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