Table 3.

Weight gain per unit area ΔW/A (mg cm⁻²) and linear k_l (g cm⁻²s⁻¹) and parabolic k_p (g² cm⁻⁴ s⁻¹) oxidation rate constants of the alloys ZX4, ZX6 and ZX8 for isothermal oxidation at 800 and 1200 °C.

T (°C)	Alloy
	ZX4		ZX6		ZX8
800	Kp = 4.7 × 10−12	ΔW/A ≈ 1	Kp = 2.2 × 10−11 (t ≤ 25 h) Kl = 6.4 × 10−9 (t > 25 h)	ΔW/A ≈ 3	Kp = 2.8 × 10−12 (t ≤ 22 h Kl = 1 × 10−8 (t > 22 h)	ΔW/A ≈ 3
1200	Kp = 1.65 × 10−9 (t ≤ 16.7 h) Kl = 1 × 10−7 (t > 16.7 h)	ΔW/A ≈ 40	Kl = 7.3 10−8	ΔW/A ≈ 25	Kl = 1.1 × 10−7	ΔW/A ≈ 38