Resolving the hardness–toughness trade‐off dilemma of metal/ceramic multilayer films by introducing gradient structure
Equal‐period modulated metal/ceramic multilayers have shown promise in enhancing the toughness of ceramic thin films. However, this toughness enhancement typically comes at the sacrifice of hardness, limiting their potential applications. To tackle this issue, this study designed and fabricated two...
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Veröffentlicht in: | Journal of the American Ceramic Society 2025-01, Vol.108 (1), p.n/a |
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creator | Zhang, Wentao Wang, Kaiwen Zhang, Rui Gu, Xinlei Pan, Jingjie Wu, Zhongzhen Zhang, Xiyao Mao, Wen Zhang, Kan |
description | Equal‐period modulated metal/ceramic multilayers have shown promise in enhancing the toughness of ceramic thin films. However, this toughness enhancement typically comes at the sacrifice of hardness, limiting their potential applications. To tackle this issue, this study designed and fabricated two gradient‐structured multilayer variations using Ta/TaB2: one with a higher ceramic layer fraction near the surface (M2) and the other with a converse structure (M3). A conventional equal modulation period Ta/TaB2 multilayer film (M1) served as a reference. M2 exhibited superior performance, with a 30% hardness increase and significant toughness enhancement compared to M1. Conversely, M3 experienced failure due to excessive thermal stress from its unique gradient structure. Finite element simulations revealed that M2's structure could alleviate in‐plane stress and enhance loading uniformity, thus enhancing the film's toughness. These findings suggest that a well‐designed gradient structure holds promise for concurrently improving the hardness and toughness of metal/ceramic multilayer films.
Gradient structure solves the hardness‐toughness trade‐off dilemma. |
doi_str_mv | 10.1111/jace.20112 |
format | Article |
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Gradient structure solves the hardness‐toughness trade‐off dilemma.</description><subject>Ceramics</subject><subject>gradient structure</subject><subject>Hardness</subject><subject>metal/ceramic multilayer</subject><subject>Multilayers</subject><subject>Plane stress</subject><subject>Thermal stress</subject><subject>Thin films</subject><subject>Toughness</subject><issn>0002-7820</issn><issn>1551-2916</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2025</creationdate><recordtype>article</recordtype><recordid>eNp9kM1KAzEQx4MoWKsXnyDgTdg2yX7mWIqfFATRc0izk3bL7qYmWWU99REE37BPYtZ6NpfJwG_-w_wQuqRkQsObbqSCCSOUsiM0omlKI8ZpdoxGhBAW5QUjp-jMuU1oKS-SEfp8Bmfq96pdYb8GvJa2bMG5_e7bm261Hv7YW1nCfvdltMZlVUPTSGw0bsDLeqrAyqZSuOlqX9WyB4t1VTcOL3tctd6aslND-iqEVNB67LztlO8snKMTLWsHF391jF5vb17m99Hi6e5hPltEivGMRXFCQKdUqzJhMtXhuEQXmnK-5KBURgvOUpkXnJYMdKYgznlaZDnlkCeMpzIeo6tD7taatw6cFxvT2TasFDFlccJzxligrg-UssY5C1psbdVI2wtKxOBWDG7Fr9sA0wP8EXT0_5DicTa_Ocz8AGkQf9A</recordid><startdate>202501</startdate><enddate>202501</enddate><creator>Zhang, Wentao</creator><creator>Wang, Kaiwen</creator><creator>Zhang, Rui</creator><creator>Gu, Xinlei</creator><creator>Pan, Jingjie</creator><creator>Wu, Zhongzhen</creator><creator>Zhang, Xiyao</creator><creator>Mao, Wen</creator><creator>Zhang, Kan</creator><general>Wiley Subscription Services, Inc</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QQ</scope><scope>7SR</scope><scope>8FD</scope><scope>JG9</scope><orcidid>https://orcid.org/0000-0003-1354-2784</orcidid></search><sort><creationdate>202501</creationdate><title>Resolving the hardness–toughness trade‐off dilemma of metal/ceramic multilayer films by introducing gradient structure</title><author>Zhang, Wentao ; Wang, Kaiwen ; Zhang, Rui ; Gu, Xinlei ; Pan, Jingjie ; Wu, Zhongzhen ; Zhang, Xiyao ; Mao, Wen ; Zhang, Kan</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c2962-340ef51fcd42a5f2014f8f199b9ecc618925a7891d2ef6ce379586719e74295a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2025</creationdate><topic>Ceramics</topic><topic>gradient structure</topic><topic>Hardness</topic><topic>metal/ceramic multilayer</topic><topic>Multilayers</topic><topic>Plane stress</topic><topic>Thermal stress</topic><topic>Thin films</topic><topic>Toughness</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zhang, Wentao</creatorcontrib><creatorcontrib>Wang, Kaiwen</creatorcontrib><creatorcontrib>Zhang, Rui</creatorcontrib><creatorcontrib>Gu, Xinlei</creatorcontrib><creatorcontrib>Pan, Jingjie</creatorcontrib><creatorcontrib>Wu, Zhongzhen</creatorcontrib><creatorcontrib>Zhang, Xiyao</creatorcontrib><creatorcontrib>Mao, Wen</creatorcontrib><creatorcontrib>Zhang, Kan</creatorcontrib><collection>CrossRef</collection><collection>Ceramic Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Journal of the American Ceramic Society</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zhang, Wentao</au><au>Wang, Kaiwen</au><au>Zhang, Rui</au><au>Gu, Xinlei</au><au>Pan, Jingjie</au><au>Wu, Zhongzhen</au><au>Zhang, Xiyao</au><au>Mao, Wen</au><au>Zhang, Kan</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Resolving the hardness–toughness trade‐off dilemma of metal/ceramic multilayer films by introducing gradient structure</atitle><jtitle>Journal of the American Ceramic Society</jtitle><date>2025-01</date><risdate>2025</risdate><volume>108</volume><issue>1</issue><epage>n/a</epage><issn>0002-7820</issn><eissn>1551-2916</eissn><abstract>Equal‐period modulated metal/ceramic multilayers have shown promise in enhancing the toughness of ceramic thin films. However, this toughness enhancement typically comes at the sacrifice of hardness, limiting their potential applications. To tackle this issue, this study designed and fabricated two gradient‐structured multilayer variations using Ta/TaB2: one with a higher ceramic layer fraction near the surface (M2) and the other with a converse structure (M3). A conventional equal modulation period Ta/TaB2 multilayer film (M1) served as a reference. M2 exhibited superior performance, with a 30% hardness increase and significant toughness enhancement compared to M1. Conversely, M3 experienced failure due to excessive thermal stress from its unique gradient structure. Finite element simulations revealed that M2's structure could alleviate in‐plane stress and enhance loading uniformity, thus enhancing the film's toughness. These findings suggest that a well‐designed gradient structure holds promise for concurrently improving the hardness and toughness of metal/ceramic multilayer films.
Gradient structure solves the hardness‐toughness trade‐off dilemma.</abstract><cop>Columbus</cop><pub>Wiley Subscription Services, Inc</pub><doi>10.1111/jace.20112</doi><tpages>13</tpages><orcidid>https://orcid.org/0000-0003-1354-2784</orcidid><oa>free_for_read</oa></addata></record> |
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subjects | Ceramics gradient structure Hardness metal/ceramic multilayer Multilayers Plane stress Thermal stress Thin films Toughness |
title | Resolving the hardness–toughness trade‐off dilemma of metal/ceramic multilayer films by introducing gradient structure |
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