Page 456 - Book Hosokawa Nanoparticle Technology Handbook

APPLICATIONS 2 GENERATION OF METAL NANOPARTICLES

100
80
60

40

20

Nanoparticles generation rate (mg•s −1 ) 8
10

6

4

2

1
0.8

0.6 Sample: Fe
Weight: 20g
0.4
Arc current: 150∼70A
Arc voltage: 30∼40V
0.2

0.1
0 20 40 60 80 100
Hydrogen content (%)

Figure 2.3
Relation between the iron nanoparticles generation rate and the hydrogen content.

Table 2.2 (3) Transmission electron microscope observation
Specific surface area of iron nanoparticles. Fig. 2.4 and Fig. 2.5 show TEM observations of Fe and
Cr nanoparticles by this method, respectively [10]. Both
2
1
Atmosphere gas Specific surface area (m g ) each particles form chain-like network. In Cr nanoparti-
60 kPa 60 kPa cles, development of cubic crystal growth was observed.
100%H 2 25–30 15–20
50%H –Ar 30–25 10–16 4. Application of the nanoparticle
2
30%H –Ar – 8–15 The reactive plasma arc evaporation method can produce
2
larger amount of metal nanoparticles with high quality,
therefore it is suitable for industrial manufacturing.
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