Morphologic and Chemical Properties of PMMA/ATH Layers with Enhanced Abrasion Resistance Realised by Cold Plasma Spraying at Atmospheric Pressure

Table 2

Elemental composition of the different samples as determined by XPS together with the resulting ratio O/C. Mean values of three measurements are displayed together with standard deviations in parentheses. Contributions from Na contamination are not listed.

Sample	O1s; c in at.%	C1s; c in at.%	Al2p; c in at.%	N1s; c in at.%	O/C
Untreated PMMA/ATH	49.8; (0.8)	38.4; (0.5)	11.8; (0.4)		1.3
Coating; (PMMA/ATH in air)	50.9; (0.2)	32.1; (0.4)	15.6; (0.3)		1.6
Coating; (PMMA/ATH in N2 + H2)	47.8; (0.8)	37.5; (1.2)	13.7; (0.4)		1.3
Untreated PF	16.1; (0.3)	81.8; (0.1)		2.2; (0.2)	0.2
Untreated PF + PMMA/ATH	42.8; (1.4)	46.8; (1.8)	9.9; (0.6)	0.4; (0.3)	0.9
Coating; (PF + PMMA/ATH in air)	34.0; (0.4)	57.3; (0.6)	5.4; (0.2)	3.3; (0.3)	0.6