Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7990603 | Journal of Alloys and Compounds | 2018 | 22 Pages |
Abstract
MAX phase foams could have various applications where tailored functional and mechanical properties are required. In this study, Ti2AlC and Ti3SiC2 MAX phase foams with controlled porosity and pore size were produced and characterized. The foams were produced from MAX phase powders by powder metallurgy method using crystalline carbohydrate as a space holder. Foams with overall porosity up to approximately 71â¯vol% and pore size from 250â¯Î¼m to 1000â¯Î¼m were successfully produced; micro-porosity and macro-porosity was characterized. Poisson's ratio and elastic moduli of the foams were measured by resonant ultrasound spectroscopy (RUS) and analyzed as a function of porosity and pore size. Different models were used to fit the experimental data and interpret the effect of pore size and amount of porosity and on elastic properties. It was found that the amount and type of porosity has a larger influence on the elastic properties than the pore size.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Beatriz Velasco, Elena Gordo, Liangfa Hu, Miladin Radovic, Sophia A. Tsipas,