Boric Acid as an Accelerator of Cerium Surface Treatment on Aluminum

Table 3

Statistical treatments of 220 test of EDS analysis.

Element	0.1 g/L H3BO3				0.5 g/L H3BO3				1 g/L H3BO3
	Atomic %				Atomic %				Atomic %
	Minimum	Average	Maximum	Standard deviation	Minimum	Average	Maximum	Standard deviation	Minimum	Average	Maximum	Standard deviation
O	1.92	12.01	30.25	6.84	3.26	14.46	32.47	7.12	0.09	11.19	26.93	5.97
Na	0.09	0.95	11.32	1.66	0.01	0.68	6.43	0.84	0.06	1.05	10.7	1.88
Al	40.33	84.37	97.54	9.24	19.12	84.94	96.2	10.13	66.53	85.91	99.38	6.38
Si	0.03	1.32	45.74	4.62	0.03	1.86	65.12	6.74	0.01	0.34	2.73	0.31
Cl	0.03	1.14	11.43	1.92	0.03	0.83	7.58	1.00	0.05	1.33	13.09	2.28
Fe	0.03	0.18	1.41	0.15	0.08	0.18	1.4	0.16	0.05	0.18	0.56	0.09
Ce	0.07	0.24	0.28	0.05	0.1	0.4	0.47	0.08	0.07	0.05	0.09	0.03