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Digitale Medien

Volatile species in halide-activated diffusion coating packs (1992)

Bianco, Robert ; Rapp, Robert A. ; Jacobson, Nathan S.

Springer

Oxidation of metals 38 (1992), S. 33-43

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Details

ISSN: 1573-4889

Schlagwort(e): Pack cementation ; aluminide diffusion coatings ; metal halide vapors

Quelle: Springer Online Journal Archives 1860-2000

Thema: Maschinenbau

Notizen: Abstract An atmospheric pressure sampling mass spectrometer was used to identify the vapor species generated in a halide-activated, cementation pack. Pack powder mixtures containing a Cr-Al binary masteralloy powder, an NH4Cl activator salt, and either ZrO2 or Y2O3 (or neither) were analyzed at 1000°C. Both equilibrium calculations for the pack and mass spectrometer results indicated that volatile AlClx and CrCly species were generated by the pack powder mixture; in packs containing the reactive element oxide, volatile ZrClz and YClw species were formed by the conversion of their oxide sources.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00665043

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