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Xie, et al.
Table 3. Corrosion rate of SLMed ZK30-0.2Cu-xMn
Materials ZK30-0.2Cu ZK30-0.2 ZK30-0.2 ZK30-0.2 ZK30-0.2
Cu-0.4Mn Cu-0.8Mn Cu-1.2Mn Cu-1.6Mn
V (ml [cm day] ) 0.67±0.03 0.56±0.03 0.48±0.06 0.71±0.04 0.93±0.04
−1
2
h
P (mm year ) 1.53±0.07 1.28±0.07 1.09±0.14 1.62±0.09 2.12±0.09
−1
h
ΔW (mg [cm day] ) 0.68±0.01 0.59±0.02 0.47±0.01 0.73±0.02 0.8±0.02
2
−1
P (mm/year) 1.43±0.02 1.24±0.04 0.99±0.02 1.53±0.04 1.68±0.04
w
I corr (μA cm ) 29 18 12 32 40
−2
P (mm year ) 0.7 0.4 0.3 0.7 0.9
−1
i
A B

Figure 6. Biodegradation behaviors: (A) Hydrogen evolution, (B) weight loss.
A B C

D E F

Figure 7. Scanning electron microscopy appearance of corroded surfaces of SLMed ZK30-0.2Cu-xMn (A) x = 0, (B) x = 0.4, (C) x = 0.8,
(D) x = 1.2, (E) x = 1.6 and (F) energy-dispersive spectroscopy spectra of points 1~2.
International Journal of Bioprinting (2021)–Volume 7, Issue 1 83