B(subscript n)C(subscript m)N(subscript l) cluster
B-C-N-M region sub-network
L-b-L assembly preparation
mixed microstructure(M+B_L)
RE N C B diffusion process
Re-B-C-N multi-element penetration
RE-B-C-N multi-elements deep penetration
RE-B-C-N multi-elements deep-penetrating