Process for pretreatment of the surface of an alloy containing chromium
A process for pretreatment of cold-worked or machined alloys containing chromium, intended to make them receptive to protective refractory oxide coatings, and to a process for depositing such coatings on the pretreated alloy, is described. The pretreatment consists in reheating the alloy to a temper...
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| creator | RICHARDS, MADELYN SUSAN FOSTER, ALAN IVOR SIMS, MALCOLM LESLIE SWIDZINSKI, MICHAEL ADAM MARIA |
| description | A process for pretreatment of cold-worked or machined alloys containing chromium, intended to make them receptive to protective refractory oxide coatings, and to a process for depositing such coatings on the pretreated alloy, is described. The pretreatment consists in reheating the alloy to a temperature above 200 DEG C, cooling the reheated alloy to a temperature below 200 DEG C and finally preoxidising the reheated, now cooled, alloy by raising its temperature above 200 DEG C in the presence of an oxidising gas. Representative types of such alloys are niobium steels and a representative protective oxide coating is that of silica. Alloys pretreated and coated in this manner are capable of withstanding a hostile environment at high temperatures and in the presence of oxidising gases and are resistant to corrosion, to carbonisation and to coke deposits. |
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The pretreatment consists in reheating the alloy to a temperature above 200 DEG C, cooling the reheated alloy to a temperature below 200 DEG C and finally preoxidising the reheated, now cooled, alloy by raising its temperature above 200 DEG C in the presence of an oxidising gas. Representative types of such alloys are niobium steels and a representative protective oxide coating is that of silica. Alloys pretreated and coated in this manner are capable of withstanding a hostile environment at high temperatures and in the presence of oxidising gases and are resistant to corrosion, to carbonisation and to coke deposits.</description><edition>4</edition><language>eng ; fre</language><subject>CHEMICAL SURFACE TREATMENT ; CHEMISTRY ; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL ; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL ; COATING MATERIAL WITH METALLIC MATERIAL ; COATING METALLIC MATERIAL ; DIFFUSION TREATMENT OF METALLIC MATERIAL ; ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS ; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS ; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL ; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS ; METALLURGY ; METALLURGY OF IRON ; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS ; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION</subject><creationdate>1986</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19860115&DB=EPODOC&CC=CH&NR=653709A5$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25562,76317</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19860115&DB=EPODOC&CC=CH&NR=653709A5$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>RICHARDS, MADELYN SUSAN</creatorcontrib><creatorcontrib>FOSTER, ALAN IVOR</creatorcontrib><creatorcontrib>SIMS, MALCOLM LESLIE</creatorcontrib><creatorcontrib>SWIDZINSKI, MICHAEL ADAM MARIA</creatorcontrib><title>Process for pretreatment of the surface of an alloy containing chromium</title><description>A process for pretreatment of cold-worked or machined alloys containing chromium, intended to make them receptive to protective refractory oxide coatings, and to a process for depositing such coatings on the pretreated alloy, is described. The pretreatment consists in reheating the alloy to a temperature above 200 DEG C, cooling the reheated alloy to a temperature below 200 DEG C and finally preoxidising the reheated, now cooled, alloy by raising its temperature above 200 DEG C in the presence of an oxidising gas. Representative types of such alloys are niobium steels and a representative protective oxide coating is that of silica. Alloys pretreated and coated in this manner are capable of withstanding a hostile environment at high temperatures and in the presence of oxidising gases and are resistant to corrosion, to carbonisation and to coke deposits.</description><subject>CHEMICAL SURFACE TREATMENT</subject><subject>CHEMISTRY</subject><subject>COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL</subject><subject>COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL</subject><subject>COATING MATERIAL WITH METALLIC MATERIAL</subject><subject>COATING METALLIC MATERIAL</subject><subject>DIFFUSION TREATMENT OF METALLIC MATERIAL</subject><subject>ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS</subject><subject>GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS</subject><subject>INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL</subject><subject>MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS</subject><subject>METALLURGY</subject><subject>METALLURGY OF IRON</subject><subject>MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS</subject><subject>SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1986</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZHAPKMpPTi0uVkjLL1IoKEotKUpNLMlNzStRyE9TKMlIVSguLUpLTE4FcRPzFBJzcvIrFZLz80oSM_My89IVkjOK8nMzS3N5GFjTEnOKU3mhNDeDvJtriLOHbmpBfnxqcQHQiLzUknhnDzNTY3MDS0dTY8IqAKemMzc</recordid><startdate>19860115</startdate><enddate>19860115</enddate><creator>RICHARDS, MADELYN SUSAN</creator><creator>FOSTER, ALAN IVOR</creator><creator>SIMS, MALCOLM LESLIE</creator><creator>SWIDZINSKI, MICHAEL ADAM MARIA</creator><scope>EVB</scope></search><sort><creationdate>19860115</creationdate><title>Process for pretreatment of the surface of an alloy containing chromium</title><author>RICHARDS, MADELYN SUSAN ; FOSTER, ALAN IVOR ; SIMS, MALCOLM LESLIE ; SWIDZINSKI, MICHAEL ADAM MARIA</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CH653709A53</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre</language><creationdate>1986</creationdate><topic>CHEMICAL SURFACE TREATMENT</topic><topic>CHEMISTRY</topic><topic>COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL</topic><topic>COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL</topic><topic>COATING MATERIAL WITH METALLIC MATERIAL</topic><topic>COATING METALLIC MATERIAL</topic><topic>DIFFUSION TREATMENT OF METALLIC MATERIAL</topic><topic>ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS</topic><topic>GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS</topic><topic>INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL</topic><topic>MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS</topic><topic>METALLURGY</topic><topic>METALLURGY OF IRON</topic><topic>MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS</topic><topic>SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION</topic><toplevel>online_resources</toplevel><creatorcontrib>RICHARDS, MADELYN SUSAN</creatorcontrib><creatorcontrib>FOSTER, ALAN IVOR</creatorcontrib><creatorcontrib>SIMS, MALCOLM LESLIE</creatorcontrib><creatorcontrib>SWIDZINSKI, MICHAEL ADAM MARIA</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>RICHARDS, MADELYN SUSAN</au><au>FOSTER, ALAN IVOR</au><au>SIMS, MALCOLM LESLIE</au><au>SWIDZINSKI, MICHAEL ADAM MARIA</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Process for pretreatment of the surface of an alloy containing chromium</title><date>1986-01-15</date><risdate>1986</risdate><abstract>A process for pretreatment of cold-worked or machined alloys containing chromium, intended to make them receptive to protective refractory oxide coatings, and to a process for depositing such coatings on the pretreated alloy, is described. The pretreatment consists in reheating the alloy to a temperature above 200 DEG C, cooling the reheated alloy to a temperature below 200 DEG C and finally preoxidising the reheated, now cooled, alloy by raising its temperature above 200 DEG C in the presence of an oxidising gas. Representative types of such alloys are niobium steels and a representative protective oxide coating is that of silica. Alloys pretreated and coated in this manner are capable of withstanding a hostile environment at high temperatures and in the presence of oxidising gases and are resistant to corrosion, to carbonisation and to coke deposits.</abstract><edition>4</edition><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION |
| title | Process for pretreatment of the surface of an alloy containing chromium |
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