SURFACE HARDENED STEEL AND SURFACE HARDENING METHOD OF STEEL
PURPOSE:To produce easily a surface hardened steel having high hardness by bringing a steel contg. nitride forming metallic elements into contact with a cathode in a nitrogen ion atmosphere, impressing a specified voltage between the cathode and anode and executing intermittently electric discharge....
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| creator | TAMURA IMAO KONDO BUNJI KUWABARA KOICHI |
| description | PURPOSE:To produce easily a surface hardened steel having high hardness by bringing a steel contg. nitride forming metallic elements into contact with a cathode in a nitrogen ion atmosphere, impressing a specified voltage between the cathode and anode and executing intermittently electric discharge. CONSTITUTION:The steel contg. nitride forming metallic elements of >=1 kinds of Cr, Al, etc. except Fe is brought into contact with the cathode and is thus homopolarized. A gaseous mixture contg. gaseous nitrogen is introduced into a reaction vessel and the specified voltage is substantially intermittently im pressed between the above-mentioned cathode and anode in the above-mentioned reaction vessel to execute intermittently the electric discharge between the two electrodes. The nitride layer in which the nitrogen concn. in the surface is as high as 0.1-10wt% and that the decreasing gradient ¦DELTAc/DELTAt¦ of the nitrogen concn. (t; thickness mu, c; nitrogen concn. %) from the surface toward the inside is as small as =0.01mm thickness is formed on the steel surface. The surface hardened steel having the high hardness is thus easily and quickly obtd. |
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CONSTITUTION:The steel contg. nitride forming metallic elements of >=1 kinds of Cr, Al, etc. except Fe is brought into contact with the cathode and is thus homopolarized. A gaseous mixture contg. gaseous nitrogen is introduced into a reaction vessel and the specified voltage is substantially intermittently im pressed between the above-mentioned cathode and anode in the above-mentioned reaction vessel to execute intermittently the electric discharge between the two electrodes. The nitride layer in which the nitrogen concn. in the surface is as high as 0.1-10wt% and that the decreasing gradient ¦DELTAc/DELTAt¦ of the nitrogen concn. (t; thickness mu, c; nitrogen concn. %) from the surface toward the inside is as small as <=0.5 and which has >=0.01mm thickness is formed on the steel surface. The surface hardened steel having the high hardness is thus easily and quickly obtd.</description><edition>4</edition><language>eng</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 ; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL ; METALLURGY ; 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=19860328&DB=EPODOC&CC=JP&NR=S6160874A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,309,781,886,25568,76551</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19860328&DB=EPODOC&CC=JP&NR=S6160874A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>TAMURA IMAO</creatorcontrib><creatorcontrib>KONDO BUNJI</creatorcontrib><creatorcontrib>KUWABARA KOICHI</creatorcontrib><title>SURFACE HARDENED STEEL AND SURFACE HARDENING METHOD OF STEEL</title><description>PURPOSE:To produce easily a surface hardened steel having high hardness by bringing a steel contg. nitride forming metallic elements into contact with a cathode in a nitrogen ion atmosphere, impressing a specified voltage between the cathode and anode and executing intermittently electric discharge. CONSTITUTION:The steel contg. nitride forming metallic elements of >=1 kinds of Cr, Al, etc. except Fe is brought into contact with the cathode and is thus homopolarized. A gaseous mixture contg. gaseous nitrogen is introduced into a reaction vessel and the specified voltage is substantially intermittently im pressed between the above-mentioned cathode and anode in the above-mentioned reaction vessel to execute intermittently the electric discharge between the two electrodes. The nitride layer in which the nitrogen concn. in the surface is as high as 0.1-10wt% and that the decreasing gradient ¦DELTAc/DELTAt¦ of the nitrogen concn. (t; thickness mu, c; nitrogen concn. %) from the surface toward the inside is as small as <=0.5 and which has >=0.01mm thickness is formed on the steel surface. The surface hardened steel having the high hardness is thus easily and quickly obtd.</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>INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL</subject><subject>METALLURGY</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>eNrjZLAJDg1yc3R2VfBwDHJx9XN1UQgOcXX1UXD0A7JQpDz93BV8XUM8_F0U_N0gqngYWNMSc4pTeaE0N4OCm2uIs4duakF-fGpxQWJyal5qSbxXQLCZoZmBhbmJozERSgCQ5CkZ</recordid><startdate>19860328</startdate><enddate>19860328</enddate><creator>TAMURA IMAO</creator><creator>KONDO BUNJI</creator><creator>KUWABARA KOICHI</creator><scope>EVB</scope></search><sort><creationdate>19860328</creationdate><title>SURFACE HARDENED STEEL AND SURFACE HARDENING METHOD OF STEEL</title><author>TAMURA IMAO ; KONDO BUNJI ; KUWABARA KOICHI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JPS6160874A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</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>INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL</topic><topic>METALLURGY</topic><topic>SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION</topic><toplevel>online_resources</toplevel><creatorcontrib>TAMURA IMAO</creatorcontrib><creatorcontrib>KONDO BUNJI</creatorcontrib><creatorcontrib>KUWABARA KOICHI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>TAMURA IMAO</au><au>KONDO BUNJI</au><au>KUWABARA KOICHI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>SURFACE HARDENED STEEL AND SURFACE HARDENING METHOD OF STEEL</title><date>1986-03-28</date><risdate>1986</risdate><abstract>PURPOSE:To produce easily a surface hardened steel having high hardness by bringing a steel contg. nitride forming metallic elements into contact with a cathode in a nitrogen ion atmosphere, impressing a specified voltage between the cathode and anode and executing intermittently electric discharge. CONSTITUTION:The steel contg. nitride forming metallic elements of >=1 kinds of Cr, Al, etc. except Fe is brought into contact with the cathode and is thus homopolarized. A gaseous mixture contg. gaseous nitrogen is introduced into a reaction vessel and the specified voltage is substantially intermittently im pressed between the above-mentioned cathode and anode in the above-mentioned reaction vessel to execute intermittently the electric discharge between the two electrodes. The nitride layer in which the nitrogen concn. in the surface is as high as 0.1-10wt% and that the decreasing gradient ¦DELTAc/DELTAt¦ of the nitrogen concn. (t; thickness mu, c; nitrogen concn. %) from the surface toward the inside is as small as <=0.5 and which has >=0.01mm thickness is formed on the steel surface. The surface hardened steel having the high hardness is thus easily and quickly obtd.</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 INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION |
| title | SURFACE HARDENED STEEL AND SURFACE HARDENING METHOD OF STEEL |
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