Field-Induced Electron Emission from Nanoporous Carbons

Table 1

Properties of NPC powders produced from different carbides.

Original carbide	Apparent density, g/cm^3	Pycnometric density, g/cm^3	Pore volume, cm^3/g	Specific surface area, m^2/g	Pore diameter, nm
ZrC	0.91	2.15	0.58	1000	0.7
TiC	0.99	2.20	0.55	1100	0.8
B4C	0.55	2.20	0.75	1310	4.0
Mo2C	0.53	2.15	0.77	1740	4.0