Long before they knew they were doing it -- as long ago as the Wright Brother's first airplane engine -- metallurgists were incorporating nanoparticles in aluminum to make a strong, hard, heat-resistant alloy. The process is called solid-state precipitation, in which, after the melt has been quickly cooled, atoms of alloying metals migrate through a solid matrix and gather themselves in dispersed particles measured in billionths of a meter, only a few-score atoms wide. Read more on Science Daily.
No comments:
Post a Comment