Table 1.

Triboelectric series of materials and their TECD.

Materials	Average TECD (μC m−2)	STDEV	α
Mica	61.80	1.63	0.547
Float glass	40.20	0.85	0.356
Borosilicate glass	38.63	1.18	0.342
BeO	9.06	0.21	0.080
PZT-5	8.82	0.16	0.078
MgSiO3	2.72	0.07	0.024
CaSiO3	2.38	0.15	0.021
Bi4Ti3O12	2.02	0.21	0.018
Bi0.5Na0.5TiO3	1.76	0.05	0.016
NiFe2O4	1.75	0.07	0.0155
Ba0.65Sr0.35TiO3	1.28	0.11	0.011
BaTiO3	1.27	0.08	0.0112
PZT-4	1.24	0.12	0.011
ZnO	0.86	0.04	0.008
NiO	0.53	0.05	0.005
SnO2	0.46	0.02	0.004
SiC	0.31	0.07	0.003
CaTiO3	0.24	0.02	0.002
ZrO2	0.09	0.07	0.001
Cr2O3	0.02	0.01	0.00013
Fe2O3	0.00	0.02	0.000
Al2O3	−1.58	0.14	−0.014
TiO2	−6.41	0.18	−0.057
AlN	−13.24	1.35	−0.117
BN	−16.90	0.97	−0.149
Clear very high-temperature glass ceramic	−39.95	2.04	−0.353
Ultra-high-temperature quartz glass	−62.66	0.47	−0.554

STDEV, standard deviation.

Note: The α refers to the measured triboelectric charge density of tested materials over the absolute value of the measured triboelectric charge density of the reference material (PTFE).