Ngày tải lên :
19/06/2014, 11:20
...
0,2
0,7
1,2
1,7
2,2
2,7
10 20 30 40 50 60
θ
, de
g
ree
Si (111)
Si (220)
Si (31 1)
Si
(
422
)
Si
(
511
)
Si
(
33 1
)
Si ( 531 )
Si
(
matrix
)
SiC (111)
SiC (31 1)
SiC (220)
SiC (422)
SiC (33 1)
SiC (400)
0,0
0,5
1,0
1,5
2,0
2,5
10 ...
valuable properties as high hardness (33 400 Mn/m
2
), chemical resistance, high melting
point (2 830 °C), wide bandgap (2 .3 3. 3 eV), etc (Lindner , 20 03) . Unfortunately, since it is still
difficult ... 22.9 and 26.9 mm and correspond to β-SiC(111), β-SiC(220), β-
SiC (31 1) (Fig. 5). The diameters of rings of SiC
0.7
diffraction pattern were 14.0, 22.9, 26.9, 28.0,
35 .3, 39 .7 mm (Fig. 6) and...