TABLE 1.

The corrosion resistance improvement of Magnesium.

Materials	Electrolyte	Immersion time	Corrosion resistance	Corrosion characterisation
Mg-10Li	DEME	14 days	↑	pH
	DEME with FBS
ZN20	DEME	14 days	↑	pH
	DEME with FBS
NZ20	DEME	14 days	↑	pH
	DEME with FBS
Mg-Zn-Ca metallic glass system	DMEM/F12	7 days	↑	(1) icorr(A/cm2):crystallised ribbon:7.94 × 10–6/relaxed ribbon:5.24 × 10–6
				(2) Ecorr(V/SCE):crystallised ribbon:-1.38/relaxed ribbon: -1.21
PEDOT on Mg	SBF	-	↑	icorr(A/cm2):Mg:9.08 × 10–4/coated Mg:6.14 × 10–5
PEDOT/GO on Mg	PBS	22 days	↑	(1) Magnesium ion release reduce 41.1%
				(2) OH– production decrease 43%
				(3) icorr(A/cm2):Mg:49.6 × 10–4/coated Mg:12.3 × 10–5
				(4) Ecorr(V/SCE):Mg:-1.705/coated Mg:-1.55
TA/PVPON on Mg70Zn26Ca4	PBS	14 days	↑	(1) Magnesium ion release reduce
				(2) icorr(A/cm2):Mg70Zn26Ca4:3.89 × 10–4 2 layers:3.24 × 10–7 5 layers:2.75 × 10–7 10 layers:3.16 × 10–7
				(3) Ecorr(V/SCE):Mg70Zn26Ca4:-1.22 2 layers:-0.26 5 layers:-0.20 10 layers:-0.22
HA on WE43	12 weeks (in vivo)		↑	(1) maintain a well-integrated structure
				(2) no gas formation
PGSM-Mg	PBS	28 days	↑	(1) a mass loss of 22.5 ± 3.3%
				(2) Magnesium ion release 54.8 ± 4.2%
				(3) pH stable
PHBV with MgOl	FBS	15 days	↑	inhibit water inter-action and erosion

“−” means it did not be studied. NZ20: Mg-Sn-Zn; ZN20: Mg-2Zn-Nd; PEDOT: Poly (3,4-ethylenedioxythiophene); GO: graphene oxide; TA/PVPON: tannic acid/poly (N-vinylpyrrolidone); HA: hydroxyapatite; WE43: Mg, 3.78%Y,2.13%Nd,0.46% Zr; PGSM: poly(glycerol-sebacate-maleate); PHBV: poly (3-hyroxybutyric acid-co-3-hydroxyva-leric acid); MgOl: magnesium-oleate; DEME: Dulbecco’s Modified Eagle Medium; FBS: 10 vol% foetal bovine serum; aCSF: artificial cerebrospinal fluid; PBS: phosphate buffer solution; SBF: simulated body fluid.