TREATING METHOD OF TITANIUM MATERIAL FOR PREVENTING HYDROGEN ABSORPTION IN HYDROGEN SULFIDE AQUEOUS SOLUTION

PURPOSE:To prevent embrittlement, enable use of Ti material being highly corrosion resistant in a hydrogen sulfide aq. soln. and enhance the practicality by deleting the scratch having deeper than specified depth on the surface of the Ti material and suppressing a hydrogen absorption. CONSTITUTION:I...

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1. Verfasser:	TAKI CHIHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL FERROUS OR NON-FERROUS ALLOYS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLICMATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASSC23 AND AT LEAST ONEPROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25 NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Zusammenfassung:	PURPOSE:To prevent embrittlement, enable use of Ti material being highly corrosion resistant in a hydrogen sulfide aq. soln. and enhance the practicality by deleting the scratch having deeper than specified depth on the surface of the Ti material and suppressing a hydrogen absorption. CONSTITUTION:In the Ti material having the scratch on the surface, the surface of the scratch is deleted in >=0.1mum by pickling and polishing to prevent the hydrogen absorption of the Ti in the hydrogen sulfide aq. soln. In this way, the formation of the hydride due to the hydrogen absorption and the embrittlement are prevented, and the safty in use is ensured, and the practicality of the Ti which is excellent remarkably in corrosion resistance as compared to stainless or copper especially is further enhanced.