Investigation of the Wear Resistance Properties of Cr/CrN Multilayer Coatings against Sand Erosion

Table 1

Mechanical properties of single layer Cr, CrN, and multilayer Cr/CrN coatings.

Coating	Bilayer Period (µm)	Total number of layers	Thickness of coating (µm)	Hardness (GPa)	-Modulus (GPa)	(GPa)
Cr	—	1	2.3	7.55 ± 0.43	308.17 ± 22.24	0.214
CrN	—	1	2.1	20.43 ± 1.70	195.76 ± 25.17	0.22
Cr3/CrN1	4	6	24	17.02 ± 1.37	282.92 ± 24.54	0.061
Cr1/CrN3	4	6	24	12.40 ± 1.13	91.80 ± 7.69	0.226
Cr0.25/CrN3.75	4	6	24	21.42 ± 2.18	303.68 ± 30.83	0.106
Cr1/CrN1	2	24	24	20.49 ± 0.86	319.04 ± 14.93	0.084
Cr0.5/CrN0.5	1	48	24	20.05 ± 1.86	252.97 ± 23.73	0.125
Cr0.25/CrN0.25	0,5	96	24	19.82 ± 1.55	298.01 ± 24.04	0.087