Refractory metals and their application in the chemical process industry
Creators
- 1. Heraeus (W.C.) G.m.b.H., Hanau (Germany, F.R.)
- 2. Bayer A.G., Leverkusen (Germany, F.R.)
Description
In the second part of this paper corrosion properties of refractory metals and their alloys subjected to hydrochloric acid, nitric acid, and hydrofluoric acid have been dealed with. Finally examples of application of refractory metals in the electrochemical as well as in the chemical engineering have been given. In pure mineral acids the passive behaviour generally improves in the order titanium-zirconium-tantalum. Except where molybdenum is concerned, the medium should not contain fluoride. The material with the widest range of applications is tantalum. The addition of niobium as an alloying element leads to favourably priced but similarly resistant materials whose prospects of becoming established in the chemical industry and playing a part similar in importance to that of tantalum itself are good. (orig./IHOE)
Abstract (German)
Im 2. Teil dieser Arbeit werden die Korrosionseigenschaften von Sondermetallen und ihrer Legierungen in Salzsaeure, Salpetersaeure und Flusssaeure behandelt und Anwendungsbeispiele fuer die elektrochemische und chemische Verfahrenstechnik gegeben. Das Passivverhalten nimmt in reinen Mineralsaeuren im allgemeinen in der Reihenfolge Titan-Zirconium-Tantal zu. Fluorid-Verunreinigungen sind (Ausnahme: Molybdaen) zu vermeiden. Der Werkstoff mit dem breitesten Anwendungsspektrum ist Tantal. Durch Zulegieren von Niob entstehen kostenguenstige, aber aehnlich korrosionsresistente Werkstoffe, die gute Chancen haben, sich in der chemischen Industrie zu etablieren und eine aehnlich wichtige Rolle wie das Tantal selbst zu spielen. (orig./IHOE)Additional details
Additional titles
- Original title (German)
- Sondermetalle und ihre Anwendung im Chemieapparatebau
Publishing Information
- Journal Title
- Z. Werkstofftech.
- Journal Volume
- 18
- Journal Issue
- 6
- Series
- Z. Werkstofftech.
- Journal Page Range
- 186-194
- ISSN
- 0049-8688
- CODEN
- ZWKTA
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 18084932
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ALLOYS; COATINGS; CORROSION; CORROSION RESISTANCE; ELECTROCHEMISTRY; EQUIPMENT; HEAT EXCHANGERS; HEATING; HYDROCHLORIC ACID; HYDROFLUORIC ACID; METALS; NITRIC ACID; PRESSURE VESSELS; TANTALUM; TITANIUM; USES; ZIRCONIUM
- Descriptors DEC
- CHEMICAL REACTIONS; CHLORINE COMPOUNDS; CONTAINERS; ELEMENTS; FLUORINE COMPOUNDS; HALOGEN COMPOUNDS; HYDROGEN COMPOUNDS; INORGANIC ACIDS; INORGANIC COMPOUNDS; NITROGEN COMPOUNDS; OXYGEN COMPOUNDS; TRANSITION ELEMENTS
Optional Information
- Notes
- Continued from Z. Werkstofftech. (May 1987) v. 18(5) p. 139-147.