Table 7.

The DCs of the NG-F and improved NG-F models for different materials.

Type of ISE	Number	Material	NG-F model	Improved NG-F model
N-ISE	1	MgO single crystals	0.9968	0.9988
	2	16MND5 steel	0.9975	0.9988
	3	High entropy alloy	0.9995	0.9997
NR-ISE	4	ZrO2 ceramic	0.8017	0.8202
	5	Cu single crystals	0.9589	0.9885
	6	Y2O3-ZrO2 ceramic	0.7378	0.7890
C-ISE	7	Cu bicrystal	0.8739	0.9411
	8	Inconel 718	0.8893	0.9352
	9	Fe-Si bicrystal	0.7462	0.8916
		Mean DC	0.8891	0.9292