{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,26]],"date-time":"2026-06-26T02:22:31Z","timestamp":1782440551211,"version":"3.54.5"},"reference-count":60,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2023,5,25]],"date-time":"2023-05-25T00:00:00Z","timestamp":1684972800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"the National Science Center, Poland","award":["UMO 2019\/33\/B\/ST8\/01263"],"award-info":[{"award-number":["UMO 2019\/33\/B\/ST8\/01263"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>A density functional theory (DFT) calculation is carried out in this work to investigate the effect of vacancies on the behavior of Al(111)\/6H SiC composites. Generally, DFT simulations with appropriate interface models can be an acceptable alternative to experimental methods. We developed two modes for Al\/SiC superlattices: C-terminated and Si-terminated interface configurations. C and Si vacancies reduce interfacial adhesion near the interface, while Al vacancies have little effect. Supercells are stretched vertically along the z-direction to obtain tensile strength. Stress\u2013strain diagrams illustrate that the tensile properties of the composite can be improved by the presence of a vacancy, particularly on the SiC side, compared to a composite without a vacancy. Determining the interfacial fracture toughness plays a pivotal role in evaluating the resistance of materials to failure. The fracture toughness of Al\/SiC is calculated using the first principal calculations in this paper. Young\u2019s modulus (E) and surface energy (\u0194) is calculated to obtain the fracture toughness (KIC). Young\u2019s modulus is higher for C-terminated configurations than for Si-terminated configurations. Surface energy plays a dominant role in determining the fracture toughness process. Finally, to better understand the electronic properties of this system, the density of states (DOS) is calculated.<\/jats:p>","DOI":"10.3390\/molecules28114345","type":"journal-article","created":{"date-parts":[[2023,5,26]],"date-time":"2023-05-26T02:00:19Z","timestamp":1685066419000},"page":"4345","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":21,"title":["Mechanical and Electronic Properties of Al(111)\/6H-SiC Interfaces: A DFT Study"],"prefix":"10.3390","volume":"28","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7501-7278","authenticated-orcid":false,"given":"Mostafa","family":"Fathalian","sequence":"first","affiliation":[{"name":"Institute of Fundamental Technological Research, Polish Academy of Sciences, Pawi\u0144skiego 5B, 02-106 Warsaw, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5757-8757","authenticated-orcid":false,"given":"Eligiusz","family":"Postek","sequence":"additional","affiliation":[{"name":"Institute of Fundamental Technological Research, Polish Academy of Sciences, Pawi\u0144skiego 5B, 02-106 Warsaw, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9212-8340","authenticated-orcid":false,"given":"Tomasz","family":"Sadowski","sequence":"additional","affiliation":[{"name":"Department of Solid Mechanics, Lublin University of Technology, 20-618 Lublin, Poland"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,5,25]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"5934","DOI":"10.1016\/j.matpr.2020.08.792","article-title":"Manufacturing processes & recent applications of aluminium metal matrix composite materials: A review","volume":"45","author":"Senthil","year":"2021","journal-title":"Mater. 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