{"title":"Effect of Organoalumoxanes on the Microstructure and Density of Al2O3f/Al2O3 Composites","authors":"M. S. Varfolomeev, G. I. Shcherbakova","doi":"10.1134/S0020168524700924","DOIUrl":null,"url":null,"abstract":"<p>We describe binders and impregnating mixtures based on chelated organoalumoxanes, which are used as precursors to highly thermally stable matrices and protective coatings. Using the polymer impregnation and pyrolysis (PIP) process, we have fabricated Al<sub>2</sub>O<sub>3f</sub>/Al<sub>2</sub>O<sub>3</sub> ceramic-matrix composites. Ceramic micropowders resulting from pyrolysis of the precursors have been shown to have an advantageous effect on the microstructure and properties of the material. We have studied the microstructure and density of Al<sub>2</sub>O<sub>3f</sub>/Al<sub>2</sub>O<sub>3</sub> composites produced using chelated organoalumoxane-based binders and impregnating mixtures. The relative density of the composites, 3.1 g/cm<sup>3</sup>, considerably exceeds the initial density of the porous preform: 2.5 g/cm<sup>3</sup>.</p>","PeriodicalId":585,"journal":{"name":"Inorganic Materials","volume":"60 6","pages":"782 - 793"},"PeriodicalIF":0.7000,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Inorganic Materials","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1134/S0020168524700924","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
We describe binders and impregnating mixtures based on chelated organoalumoxanes, which are used as precursors to highly thermally stable matrices and protective coatings. Using the polymer impregnation and pyrolysis (PIP) process, we have fabricated Al2O3f/Al2O3 ceramic-matrix composites. Ceramic micropowders resulting from pyrolysis of the precursors have been shown to have an advantageous effect on the microstructure and properties of the material. We have studied the microstructure and density of Al2O3f/Al2O3 composites produced using chelated organoalumoxane-based binders and impregnating mixtures. The relative density of the composites, 3.1 g/cm3, considerably exceeds the initial density of the porous preform: 2.5 g/cm3.
期刊介绍：
Inorganic Materials is a journal that publishes reviews and original articles devoted to chemistry, physics, and applications of various inorganic materials including high-purity substances and materials. The journal discusses phase equilibria, including P–T–X diagrams, and the fundamentals of inorganic materials science, which determines preparatory conditions for compounds of various compositions with specified deviations from stoichiometry. Inorganic Materials is a multidisciplinary journal covering all classes of inorganic materials. The journal welcomes manuscripts from all countries in the English or Russian language.
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