| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1501648 | Scripta Materialia | 2007 | 4 Pages |
Abstract
The microstructural and chemical characteristics of Ni–Mn–Ga particles produced by spark-erosion using liquid argon or liquid nitrogen dielectrics were investigated by electron microscopy techniques. The particles were predominantly micron-sized spheres; those obtained in argon were solid, whereas those obtained in nitrogen were primarily hollow. The investigation of annealed particles revealed twinned microstructure and provided evidence supporting the cryogen solubility model of hollow particle formation, as well as possibly explaining the non-homogeneous structure of particles formed by spark-erosion in liquid nitrogen.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Virgil C. Solomon, Jung-Il Hong, YunJun Tang, Ami E. Berkowitz, David J. Smith,