Tribological behavior of ceramic-alloy bearing contacts in molten salt lubrication for concentrating solar power
Molten salts are considered as candidate heat transfer fluids and thermal energy storage media for next generation concentrating solar power (CSP). A molten salt circulates inside the piping and heat exchanger and also functions as a lubricant for the sleeve bearings of the CSP pump. Wear- and corro...
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| Veröffentlicht in: | Solar energy materials and solar cells 2021-06, Vol.225, p.111065, Article 111065 |
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| creator | He, Xin Wang, Rick Sulejmanovic, Dino Robb, Kevin R. Keiser, James R. Oldinski, Keith Qu, Jun |
| description | Molten salts are considered as candidate heat transfer fluids and thermal energy storage media for next generation concentrating solar power (CSP). A molten salt circulates inside the piping and heat exchanger and also functions as a lubricant for the sleeve bearings of the CSP pump. Wear- and corrosion-resistant high-temperature bearing materials are critical for the pump efficiency and durability. This study evaluated the tribological performance of candidate bearing materials in lubrication of a molten chloride salt mixture (20% NaCl + 40% MgCl2 + 40% KCl) at 750 °C in an inert argon gas (a simulative CSP pump environment). Six ceramic-alloy pairs were tested, zirconia and silicon nitride against Haynes 244, Hastelloy C276, and Tribaloy T900 alloy, and ranked by the friction coefficient and wear loss. Characterization of worn surfaces suggested the wear mechanism as a combination of abrasion, adhesion, and tribocorrosion. Results from this study provide fundamental insight for the development and selection of bearing materials for molten salt powered CSP pumps.
[Display omitted]
•Tribological behavior of candidate bearing materials in a molten chloride salt at 750 °C.•Molten salts could function as lubricants though their lubricity is not optimal.•Wear in molten salt is a combination of abrasion, adhesion, and tribocorrosion.•Fundamental insights for molten salt pump bearings for concentrating solar power. |
| doi_str_mv | 10.1016/j.solmat.2021.111065 |
| format | Article |
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[Display omitted]
•Tribological behavior of candidate bearing materials in a molten chloride salt at 750 °C.•Molten salts could function as lubricants though their lubricity is not optimal.•Wear in molten salt is a combination of abrasion, adhesion, and tribocorrosion.•Fundamental insights for molten salt pump bearings for concentrating solar power.</description><identifier>ISSN: 0927-0248</identifier><identifier>EISSN: 1879-3398</identifier><identifier>DOI: 10.1016/j.solmat.2021.111065</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Abrasion ; Argon ; Bearing materials ; Coefficient of friction ; Concentrating solar power ; Corrosion resistance ; Corrosive wear ; Durability ; Energy storage ; Hastelloy (trademark) ; Heat exchangers ; Heat transfer ; High temperature ; Lubricants ; Lubricants & lubrication ; Lubrication ; Magnesium chloride ; Materials selection ; Molten salt ; Molten salts ; Nickel base alloys ; Potassium chloride ; Silicon nitride ; Sleeve bearing ; Sleeve bearings ; Sodium chloride ; SOLAR ENERGY ; Solar power ; Thermal energy ; Tribology ; Wear ; Wear mechanisms ; Wear resistance ; Zirconia ; Zirconium dioxide</subject><ispartof>Solar energy materials and solar cells, 2021-06, Vol.225, p.111065, Article 111065</ispartof><rights>2021 Elsevier B.V.</rights><rights>Copyright Elsevier BV Jun 15, 2021</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c407t-481a1b188d979b1792b9b34630c98c805236cf90cfe751b5618f6881e25e904f3</citedby><cites>FETCH-LOGICAL-c407t-481a1b188d979b1792b9b34630c98c805236cf90cfe751b5618f6881e25e904f3</cites><orcidid>0000-0002-3988-438X ; 0000-0001-9466-3179 ; 0000-0002-7948-126X ; 000000027948126X ; 0000000347187776 ; 0000000225049084 ; 000000023988438X ; 0000000194663179</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.solmat.2021.111065$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>230,314,777,781,882,3537,27905,27906,45976</link.rule.ids><backlink>$$Uhttps://www.osti.gov/servlets/purl/1798607$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>He, Xin</creatorcontrib><creatorcontrib>Wang, Rick</creatorcontrib><creatorcontrib>Sulejmanovic, Dino</creatorcontrib><creatorcontrib>Robb, Kevin R.</creatorcontrib><creatorcontrib>Keiser, James R.</creatorcontrib><creatorcontrib>Oldinski, Keith</creatorcontrib><creatorcontrib>Qu, Jun</creatorcontrib><creatorcontrib>Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)</creatorcontrib><creatorcontrib>Hayward Tyler, Inc</creatorcontrib><title>Tribological behavior of ceramic-alloy bearing contacts in molten salt lubrication for concentrating solar power</title><title>Solar energy materials and solar cells</title><description>Molten salts are considered as candidate heat transfer fluids and thermal energy storage media for next generation concentrating solar power (CSP). A molten salt circulates inside the piping and heat exchanger and also functions as a lubricant for the sleeve bearings of the CSP pump. Wear- and corrosion-resistant high-temperature bearing materials are critical for the pump efficiency and durability. This study evaluated the tribological performance of candidate bearing materials in lubrication of a molten chloride salt mixture (20% NaCl + 40% MgCl2 + 40% KCl) at 750 °C in an inert argon gas (a simulative CSP pump environment). Six ceramic-alloy pairs were tested, zirconia and silicon nitride against Haynes 244, Hastelloy C276, and Tribaloy T900 alloy, and ranked by the friction coefficient and wear loss. Characterization of worn surfaces suggested the wear mechanism as a combination of abrasion, adhesion, and tribocorrosion. Results from this study provide fundamental insight for the development and selection of bearing materials for molten salt powered CSP pumps.
[Display omitted]
•Tribological behavior of candidate bearing materials in a molten chloride salt at 750 °C.•Molten salts could function as lubricants though their lubricity is not optimal.•Wear in molten salt is a combination of abrasion, adhesion, and tribocorrosion.•Fundamental insights for molten salt pump bearings for concentrating solar power.</description><subject>Abrasion</subject><subject>Argon</subject><subject>Bearing materials</subject><subject>Coefficient of friction</subject><subject>Concentrating solar power</subject><subject>Corrosion resistance</subject><subject>Corrosive wear</subject><subject>Durability</subject><subject>Energy storage</subject><subject>Hastelloy (trademark)</subject><subject>Heat exchangers</subject><subject>Heat transfer</subject><subject>High temperature</subject><subject>Lubricants</subject><subject>Lubricants & lubrication</subject><subject>Lubrication</subject><subject>Magnesium chloride</subject><subject>Materials selection</subject><subject>Molten salt</subject><subject>Molten salts</subject><subject>Nickel base alloys</subject><subject>Potassium chloride</subject><subject>Silicon nitride</subject><subject>Sleeve bearing</subject><subject>Sleeve bearings</subject><subject>Sodium chloride</subject><subject>SOLAR ENERGY</subject><subject>Solar power</subject><subject>Thermal energy</subject><subject>Tribology</subject><subject>Wear</subject><subject>Wear mechanisms</subject><subject>Wear resistance</subject><subject>Zirconia</subject><subject>Zirconium dioxide</subject><issn>0927-0248</issn><issn>1879-3398</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNp9kUtLAzEUhYMoWKv_wEXQ9dR7M69kI0jxBQU3dR0yaaZNSSc1SSv-e1PGtasLud85nJtDyC3CDAGbh-0serdTacaA4QwRoanPyAR5K4qyFPycTECwtgBW8UtyFeMWAFhTVhOyXwbbeefXVitHO7NRR-sD9T3VJqid1YVyzv_kjQp2WFPth6R0itQOdOddMgONyiXqDl3IFsn6gfbZIHPaDCnkl6zK8VSge_9twjW56JWL5uZvTsnny_Ny_lYsPl7f50-LQlfQpqLiqLBDzleiFR22gnWiK6umBC245lCzstG9AN2btsaubpD3DedoWG0EVH05JXejr4_JyqhtMnqTUw1GJ5n9eANthu5HaB_818HEJLf-EIacS7KaITKECjNVjZQOPsZgerkPdqfCj0SQpwLkVo4FyFMBciwgyx5HmclnHq0JpxQmf8vKhlOIlbf_G_wCJpiQ_A</recordid><startdate>20210615</startdate><enddate>20210615</enddate><creator>He, Xin</creator><creator>Wang, Rick</creator><creator>Sulejmanovic, Dino</creator><creator>Robb, Kevin R.</creator><creator>Keiser, James R.</creator><creator>Oldinski, Keith</creator><creator>Qu, Jun</creator><general>Elsevier B.V</general><general>Elsevier BV</general><general>Elsevier</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7ST</scope><scope>7TB</scope><scope>7U5</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>L7M</scope><scope>SOI</scope><scope>OIOZB</scope><scope>OTOTI</scope><orcidid>https://orcid.org/0000-0002-3988-438X</orcidid><orcidid>https://orcid.org/0000-0001-9466-3179</orcidid><orcidid>https://orcid.org/0000-0002-7948-126X</orcidid><orcidid>https://orcid.org/000000027948126X</orcidid><orcidid>https://orcid.org/0000000347187776</orcidid><orcidid>https://orcid.org/0000000225049084</orcidid><orcidid>https://orcid.org/000000023988438X</orcidid><orcidid>https://orcid.org/0000000194663179</orcidid></search><sort><creationdate>20210615</creationdate><title>Tribological behavior of ceramic-alloy bearing contacts in molten salt lubrication for concentrating solar power</title><author>He, Xin ; Wang, Rick ; Sulejmanovic, Dino ; Robb, Kevin R. ; Keiser, James R. ; Oldinski, Keith ; Qu, Jun</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c407t-481a1b188d979b1792b9b34630c98c805236cf90cfe751b5618f6881e25e904f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Abrasion</topic><topic>Argon</topic><topic>Bearing materials</topic><topic>Coefficient of friction</topic><topic>Concentrating solar power</topic><topic>Corrosion resistance</topic><topic>Corrosive wear</topic><topic>Durability</topic><topic>Energy storage</topic><topic>Hastelloy (trademark)</topic><topic>Heat exchangers</topic><topic>Heat transfer</topic><topic>High temperature</topic><topic>Lubricants</topic><topic>Lubricants & lubrication</topic><topic>Lubrication</topic><topic>Magnesium chloride</topic><topic>Materials selection</topic><topic>Molten salt</topic><topic>Molten salts</topic><topic>Nickel base alloys</topic><topic>Potassium chloride</topic><topic>Silicon nitride</topic><topic>Sleeve bearing</topic><topic>Sleeve bearings</topic><topic>Sodium chloride</topic><topic>SOLAR ENERGY</topic><topic>Solar power</topic><topic>Thermal energy</topic><topic>Tribology</topic><topic>Wear</topic><topic>Wear mechanisms</topic><topic>Wear resistance</topic><topic>Zirconia</topic><topic>Zirconium dioxide</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>He, Xin</creatorcontrib><creatorcontrib>Wang, Rick</creatorcontrib><creatorcontrib>Sulejmanovic, Dino</creatorcontrib><creatorcontrib>Robb, Kevin R.</creatorcontrib><creatorcontrib>Keiser, James R.</creatorcontrib><creatorcontrib>Oldinski, Keith</creatorcontrib><creatorcontrib>Qu, Jun</creatorcontrib><creatorcontrib>Oak Ridge National Lab. 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(ORNL), Oak Ridge, TN (United States)</aucorp><aucorp>Hayward Tyler, Inc</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Tribological behavior of ceramic-alloy bearing contacts in molten salt lubrication for concentrating solar power</atitle><jtitle>Solar energy materials and solar cells</jtitle><date>2021-06-15</date><risdate>2021</risdate><volume>225</volume><spage>111065</spage><pages>111065-</pages><artnum>111065</artnum><issn>0927-0248</issn><eissn>1879-3398</eissn><abstract>Molten salts are considered as candidate heat transfer fluids and thermal energy storage media for next generation concentrating solar power (CSP). A molten salt circulates inside the piping and heat exchanger and also functions as a lubricant for the sleeve bearings of the CSP pump. Wear- and corrosion-resistant high-temperature bearing materials are critical for the pump efficiency and durability. This study evaluated the tribological performance of candidate bearing materials in lubrication of a molten chloride salt mixture (20% NaCl + 40% MgCl2 + 40% KCl) at 750 °C in an inert argon gas (a simulative CSP pump environment). Six ceramic-alloy pairs were tested, zirconia and silicon nitride against Haynes 244, Hastelloy C276, and Tribaloy T900 alloy, and ranked by the friction coefficient and wear loss. Characterization of worn surfaces suggested the wear mechanism as a combination of abrasion, adhesion, and tribocorrosion. Results from this study provide fundamental insight for the development and selection of bearing materials for molten salt powered CSP pumps.
[Display omitted]
•Tribological behavior of candidate bearing materials in a molten chloride salt at 750 °C.•Molten salts could function as lubricants though their lubricity is not optimal.•Wear in molten salt is a combination of abrasion, adhesion, and tribocorrosion.•Fundamental insights for molten salt pump bearings for concentrating solar power.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/j.solmat.2021.111065</doi><orcidid>https://orcid.org/0000-0002-3988-438X</orcidid><orcidid>https://orcid.org/0000-0001-9466-3179</orcidid><orcidid>https://orcid.org/0000-0002-7948-126X</orcidid><orcidid>https://orcid.org/000000027948126X</orcidid><orcidid>https://orcid.org/0000000347187776</orcidid><orcidid>https://orcid.org/0000000225049084</orcidid><orcidid>https://orcid.org/000000023988438X</orcidid><orcidid>https://orcid.org/0000000194663179</orcidid><oa>free_for_read</oa></addata></record> |
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| source | Elsevier ScienceDirect Journals |
| subjects | Abrasion Argon Bearing materials Coefficient of friction Concentrating solar power Corrosion resistance Corrosive wear Durability Energy storage Hastelloy (trademark) Heat exchangers Heat transfer High temperature Lubricants Lubricants & lubrication Lubrication Magnesium chloride Materials selection Molten salt Molten salts Nickel base alloys Potassium chloride Silicon nitride Sleeve bearing Sleeve bearings Sodium chloride SOLAR ENERGY Solar power Thermal energy Tribology Wear Wear mechanisms Wear resistance Zirconia Zirconium dioxide |
| title | Tribological behavior of ceramic-alloy bearing contacts in molten salt lubrication for concentrating solar power |
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