Effect of the Boron Powder on Surface AISI W2 Steel: Experiments and Modelling

Table 2

Comparison of the boron activation energy for some materials depending on the boriding method.

Material	Boriding medium	Boriding potential	Phases in boride layer	Activation energy of Fe B kJ·mol^−1	Activation energy of Fe2 B kJ·mol^−1	Reference
AISI O1	Powder pack	Durborid powder mixture	Fe2B	—	197.82	Elias-Espinosa et al. [7]
AISI D2	Powder pack	Durborid powder mixture	Fe2B, CrB, Cr2B, MoB, Mo4B2, B2V	—	201.15	Ortiz-Domínguez et al. [8]
AISI S1	Powder pack	Powder mixture (20% B4C, 10% KBF4, and 70% SiC)	Fe2B	—	199.16	Zuno-Silva et al. [29]
AISI D2	Electrochemical boriding	Molten borax (Na2B4O7)	FeB, Fe2B, CrB	137.86		Sista et al. [13]
AISI W1	Powder pack	Ekabor-I	FeB, Fe2B	171.2		Genel et al. [14]
AISI H13	Powder pack	Ekabor-I powders	FeB, Fe2B, CrB, Cr2B	186.2		Genel [30]
AISI H10	Powder pack	Ekabor-II	FeB, Fe2B, CrB, Cr2B, MoB	160.59		Gunes and Ozcatal [31]
AISI W2	Powder pack	Durborid fresh powder mixture	Fe2B, CrB, Cr2B	------	187.69	This study