BULK NANOSTRUCTURED
MATERIALS
In this chapter the properties of bulk nanostructured materials are discussed. Bulk
nanostructured materials are solids having a nanosized microstructure. The basic
units that make up the solids are nanoparticles. The nanoparticles can be disordered
with respect to each other, where their symmetry axes are randomly oriented
and their spatial positions display no symmetry. The particles can also be ordered
in lattice arrays displaying symmetry. Figure 6. l a illustrates a hypothetical
two-dimensional ordered lattice of AI,2 nanoparticles, and Fig. 6.lb shows a twodimensional bulk disordered nanostructure of these same nanoparticles.
6.1. SOLID DISORDERED NANOSTRUCTURES
6.1.1. Methods of Synthesis
In this section we will discuss some of the ways that disordered nanostructured
solids are made. One method is referred to as compaction and consolidation. As an
example of such a process, let us consider how nanostructured Cu-Fe alloys are
made. Mixtures of iron and copper powders having the composition Fe&uI5 are
ballmilled for 15 h at room temperature. The material is then compacted using a
Introduction to Nanotechnology, by Charles P Poole Jr. and Frank J. Owens
ISBN 0-471-07935-9. Copyright (CJ 2003 John Wiley & Sons, Inc.
133
MATERIALS
In this chapter the properties of bulk nanostructured materials are discussed. Bulk
nanostructured materials are solids having a nanosized microstructure. The basic
units that make up the solids are nanoparticles. The nanoparticles can be disordered
with respect to each other, where their symmetry axes are randomly oriented
and their spatial positions display no symmetry. The particles can also be ordered
in lattice arrays displaying symmetry. Figure 6. l a illustrates a hypothetical
two-dimensional ordered lattice of AI,2 nanoparticles, and Fig. 6.lb shows a twodimensional bulk disordered nanostructure of these same nanoparticles.
6.1. SOLID DISORDERED NANOSTRUCTURES
6.1.1. Methods of Synthesis
In this section we will discuss some of the ways that disordered nanostructured
solids are made. One method is referred to as compaction and consolidation. As an
example of such a process, let us consider how nanostructured Cu-Fe alloys are
made. Mixtures of iron and copper powders having the composition Fe&uI5 are
ballmilled for 15 h at room temperature. The material is then compacted using a
Introduction to Nanotechnology, by Charles P Poole Jr. and Frank J. Owens
ISBN 0-471-07935-9. Copyright (CJ 2003 John Wiley & Sons, Inc.
133