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Tungsten Coating on Low Activation Vanadium Alloy by Plasma Spray Process
Tungsten (W) coating on fusion candidate V-4Cr-4Ti (NIFS-HEAT-2) substrate was demonstrated with plasma spray process for the purpose of applying to protection of the plasma facing surface of a fusion blanket. Increase in plasma input power and temperature of the substrate was effective to reduce po...
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| Published in: | Fusion science and technology 2005-05, Vol.47 (4), p.876-880 |
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| Main Authors: | , , , , , |
| Format: | Article |
| Language: | English |
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| cited_by | cdi_FETCH-LOGICAL-c339t-ee1c0feee09c6bdefc1bb80d3ca62dc6190d03f8be153dbbc826a849d2e514693 |
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| cites | cdi_FETCH-LOGICAL-c339t-ee1c0feee09c6bdefc1bb80d3ca62dc6190d03f8be153dbbc826a849d2e514693 |
| container_end_page | 880 |
| container_issue | 4 |
| container_start_page | 876 |
| container_title | Fusion science and technology |
| container_volume | 47 |
| creator | Nagasaka, Takuya Muroga, Takeo Noda, Nobuaki Kawamura, Masashi Ise, Hideo Kurishita, Hiroaki |
| description | Tungsten (W) coating on fusion candidate V-4Cr-4Ti (NIFS-HEAT-2) substrate was demonstrated with plasma spray process for the purpose of applying to protection of the plasma facing surface of a fusion blanket. Increase in plasma input power and temperature of the substrate was effective to reduce porosity of the coating, but resulted in hardening of the substrate and degradation of impact property at 77 K. The hardening seemed to be due to contamination with gaseous impurities and deformation by thermal stress during the coating process. Since all the samples showed good ductility at room temperature, further heating seems to be acceptable for the vanadium substrate. The fracture stress of the W coating was estimated from bending tests as at least 313 MPa, which well exceeds the design stress for the vanadium structure in fusion blanket. |
| doi_str_mv | 10.13182/FST05-A797 |
| format | article |
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Increase in plasma input power and temperature of the substrate was effective to reduce porosity of the coating, but resulted in hardening of the substrate and degradation of impact property at 77 K. The hardening seemed to be due to contamination with gaseous impurities and deformation by thermal stress during the coating process. Since all the samples showed good ductility at room temperature, further heating seems to be acceptable for the vanadium substrate. 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Increase in plasma input power and temperature of the substrate was effective to reduce porosity of the coating, but resulted in hardening of the substrate and degradation of impact property at 77 K. The hardening seemed to be due to contamination with gaseous impurities and deformation by thermal stress during the coating process. Since all the samples showed good ductility at room temperature, further heating seems to be acceptable for the vanadium substrate. The fracture stress of the W coating was estimated from bending tests as at least 313 MPa, which well exceeds the design stress for the vanadium structure in fusion blanket.</description><subject>70 PLASMA PHYSICS AND FUSION TECHNOLOGY</subject><subject>BENDING</subject><subject>DESIGN</subject><subject>DUCTILITY</subject><subject>FIRST WALL</subject><subject>FRACTURES</subject><subject>HARDENING</subject><subject>PLASMA</subject><subject>SUBSTRATES</subject><subject>SURFACE COATING</subject><subject>THERMAL STRESSES</subject><subject>THERMONUCLEAR REACTOR MATERIALS</subject><subject>TUNGSTEN</subject><subject>US NATIONAL IGNITION FACILITY</subject><subject>VANADIUM</subject><subject>VANADIUM ALLOYS</subject><issn>1536-1055</issn><issn>1943-7641</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><recordid>eNptkE1LxDAQhosouK6e_AMFwYtU89GmzbEsri4sKOzqNaTpdI20yZqkLv331q1HTzPv8MwwPFF0jdE9prggD8vNFmVJmfP8JJphntIkZyk-HfuMsgSjLDuPLrz_RIjkLCezaLXtzc4HMPHCyqDNLrYmXttDXKqgv8fJGN-lkbXuu7hsWzvE1RC_ttJ3Mt7snRyDswq8v4zOGtl6uPqr8-ht-bhdPCfrl6fVolwnilIeEgCsUAMAiCtW1dAoXFUFqqmSjNSKYY5qRJuigvHluqpUQZgsUl4TyHDKOJ1HN9Nd64MWXukA6kNZY0AFQVCRpQj_UrcTtXf2qwcfRKe9graVBmzvBeGII0ryEbybQOWs9w4asXe6k24QGImjVHGUKn6ljjSbaG0a6zp5sK6tRZBDa13jpFHaC_rf4g-wa3wt</recordid><startdate>20050501</startdate><enddate>20050501</enddate><creator>Nagasaka, Takuya</creator><creator>Muroga, Takeo</creator><creator>Noda, Nobuaki</creator><creator>Kawamura, Masashi</creator><creator>Ise, Hideo</creator><creator>Kurishita, Hiroaki</creator><general>Taylor & Francis</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope><scope>OTOTI</scope></search><sort><creationdate>20050501</creationdate><title>Tungsten Coating on Low Activation Vanadium Alloy by Plasma Spray Process</title><author>Nagasaka, Takuya ; Muroga, Takeo ; Noda, Nobuaki ; Kawamura, Masashi ; Ise, Hideo ; Kurishita, Hiroaki</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c339t-ee1c0feee09c6bdefc1bb80d3ca62dc6190d03f8be153dbbc826a849d2e514693</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2005</creationdate><topic>70 PLASMA PHYSICS AND FUSION TECHNOLOGY</topic><topic>BENDING</topic><topic>DESIGN</topic><topic>DUCTILITY</topic><topic>FIRST WALL</topic><topic>FRACTURES</topic><topic>HARDENING</topic><topic>PLASMA</topic><topic>SUBSTRATES</topic><topic>SURFACE COATING</topic><topic>THERMAL STRESSES</topic><topic>THERMONUCLEAR REACTOR MATERIALS</topic><topic>TUNGSTEN</topic><topic>US NATIONAL IGNITION FACILITY</topic><topic>VANADIUM</topic><topic>VANADIUM ALLOYS</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Nagasaka, Takuya</creatorcontrib><creatorcontrib>Muroga, Takeo</creatorcontrib><creatorcontrib>Noda, Nobuaki</creatorcontrib><creatorcontrib>Kawamura, Masashi</creatorcontrib><creatorcontrib>Ise, Hideo</creatorcontrib><creatorcontrib>Kurishita, Hiroaki</creatorcontrib><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>OSTI.GOV</collection><jtitle>Fusion science and technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Nagasaka, Takuya</au><au>Muroga, Takeo</au><au>Noda, Nobuaki</au><au>Kawamura, Masashi</au><au>Ise, Hideo</au><au>Kurishita, Hiroaki</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Tungsten Coating on Low Activation Vanadium Alloy by Plasma Spray Process</atitle><jtitle>Fusion science and technology</jtitle><date>2005-05-01</date><risdate>2005</risdate><volume>47</volume><issue>4</issue><spage>876</spage><epage>880</epage><pages>876-880</pages><issn>1536-1055</issn><eissn>1943-7641</eissn><abstract>Tungsten (W) coating on fusion candidate V-4Cr-4Ti (NIFS-HEAT-2) substrate was demonstrated with plasma spray process for the purpose of applying to protection of the plasma facing surface of a fusion blanket. Increase in plasma input power and temperature of the substrate was effective to reduce porosity of the coating, but resulted in hardening of the substrate and degradation of impact property at 77 K. The hardening seemed to be due to contamination with gaseous impurities and deformation by thermal stress during the coating process. Since all the samples showed good ductility at room temperature, further heating seems to be acceptable for the vanadium substrate. The fracture stress of the W coating was estimated from bending tests as at least 313 MPa, which well exceeds the design stress for the vanadium structure in fusion blanket.</abstract><cop>United States</cop><pub>Taylor & Francis</pub><doi>10.13182/FST05-A797</doi><tpages>5</tpages></addata></record> |
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| ispartof | Fusion science and technology, 2005-05, Vol.47 (4), p.876-880 |
| issn | 1536-1055 1943-7641 |
| language | eng |
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| source | Taylor and Francis Science and Technology Collection |
| subjects | 70 PLASMA PHYSICS AND FUSION TECHNOLOGY BENDING DESIGN DUCTILITY FIRST WALL FRACTURES HARDENING PLASMA SUBSTRATES SURFACE COATING THERMAL STRESSES THERMONUCLEAR REACTOR MATERIALS TUNGSTEN US NATIONAL IGNITION FACILITY VANADIUM VANADIUM ALLOYS |
| title | Tungsten Coating on Low Activation Vanadium Alloy by Plasma Spray Process |
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