The Influence of High-Temperature Nitrogen Plasma-Based Ion Implantation on Niobium Creep Behavior

Table 1

Hardness distribution measured for treated and untreated samples in different regions of the material.

Depth (μm)	Average hardness (HV)
	Untreated	HT-NPBII for 1 h	HT-NPBII for 4 h	HT-NPBII for 8 h
3	247 ± 15	1716 ± 19	1926 ± 29	2498 ± 29
5	228 ± 10	397 ± 32	404 ± 52	392 ± 57
10	207 ± 14	426 ± 19	409 ± 31	377 ± 32
15	225 ± 20	454 ± 56	482 ± 81	428 ± 35
20	224 ± 30	425 ± 19	382 ± 85	340 ± 26
25	223 ± 15	362 ± 36	415 ± 29	372 ± 17