{"title":"通过战略性断裂路径控制强化陶瓷接头","authors":"Jian Feng, Marion Herrmann, Antonio Hurtado","doi":"10.1002/admt.202400535","DOIUrl":null,"url":null,"abstract":"<p>Ceramic-on-ceramic joints are notorious for their inherent brittleness, posing challenges for high-performance applications. To address this, a novel approach is proposed to enhance the involvement of filler metals during fracture. This study investigates the controlled initiation and propagation of cracks in Al<sub>2</sub>O<sub>3</sub>–Al<sub>2</sub>O<sub>3</sub> joints through a strategic combination of laser pre-cracking, laser patterning, and laser active brazing techniques. By introducing pre-cracking and African daisy-like patterning, crack propagation dynamics are altered, with cracks initially confined within pre-crack regions before navigating through pattern intrusions. Additionally, laser active brazing effectively managed titanium diffusion, optimizing interface strength control. Evaluation via SEVNB tests demonstrated a significant enhancement in fracture toughness, achieving maximal 25.6 ± 4.6 MPa·m<sup>0.5</sup> compared to ≈3–5 MPa·m<sup>0.5</sup> for alumina ribbons. This integrated approach offers precise control over fracture paths, thereby augmenting the performance of ceramic-on-ceramic joints, and holds promise for advancing their applications in demanding environments.</p>","PeriodicalId":7292,"journal":{"name":"Advanced Materials Technologies","volume":"10 1","pages":""},"PeriodicalIF":6.4000,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/admt.202400535","citationCount":"0","resultStr":"{\"title\":\"Toughening Ceramic Joints through Strategic Fracture Path Control\",\"authors\":\"Jian Feng, Marion Herrmann, Antonio Hurtado\",\"doi\":\"10.1002/admt.202400535\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Ceramic-on-ceramic joints are notorious for their inherent brittleness, posing challenges for high-performance applications. To address this, a novel approach is proposed to enhance the involvement of filler metals during fracture. This study investigates the controlled initiation and propagation of cracks in Al<sub>2</sub>O<sub>3</sub>–Al<sub>2</sub>O<sub>3</sub> joints through a strategic combination of laser pre-cracking, laser patterning, and laser active brazing techniques. By introducing pre-cracking and African daisy-like patterning, crack propagation dynamics are altered, with cracks initially confined within pre-crack regions before navigating through pattern intrusions. Additionally, laser active brazing effectively managed titanium diffusion, optimizing interface strength control. Evaluation via SEVNB tests demonstrated a significant enhancement in fracture toughness, achieving maximal 25.6 ± 4.6 MPa·m<sup>0.5</sup> compared to ≈3–5 MPa·m<sup>0.5</sup> for alumina ribbons. This integrated approach offers precise control over fracture paths, thereby augmenting the performance of ceramic-on-ceramic joints, and holds promise for advancing their applications in demanding environments.</p>\",\"PeriodicalId\":7292,\"journal\":{\"name\":\"Advanced Materials Technologies\",\"volume\":\"10 1\",\"pages\":\"\"},\"PeriodicalIF\":6.4000,\"publicationDate\":\"2024-08-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://onlinelibrary.wiley.com/doi/epdf/10.1002/admt.202400535\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Advanced Materials Technologies\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/admt.202400535\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Materials Technologies","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/admt.202400535","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Toughening Ceramic Joints through Strategic Fracture Path Control
Ceramic-on-ceramic joints are notorious for their inherent brittleness, posing challenges for high-performance applications. To address this, a novel approach is proposed to enhance the involvement of filler metals during fracture. This study investigates the controlled initiation and propagation of cracks in Al2O3–Al2O3 joints through a strategic combination of laser pre-cracking, laser patterning, and laser active brazing techniques. By introducing pre-cracking and African daisy-like patterning, crack propagation dynamics are altered, with cracks initially confined within pre-crack regions before navigating through pattern intrusions. Additionally, laser active brazing effectively managed titanium diffusion, optimizing interface strength control. Evaluation via SEVNB tests demonstrated a significant enhancement in fracture toughness, achieving maximal 25.6 ± 4.6 MPa·m0.5 compared to ≈3–5 MPa·m0.5 for alumina ribbons. This integrated approach offers precise control over fracture paths, thereby augmenting the performance of ceramic-on-ceramic joints, and holds promise for advancing their applications in demanding environments.
期刊介绍:
Advanced Materials Technologies Advanced Materials Technologies is the new home for all technology-related materials applications research, with particular focus on advanced device design, fabrication and integration, as well as new technologies based on novel materials. It bridges the gap between fundamental laboratory research and industry.