Table A2.

Measured diffusivities for transition elements in aluminum (data calculated are indicated).

Element	Group−Period	Pre−Exponential Do	Activation Enthalpy, Q		D at 500 °C (773 K)	Temp Range, °C	Reference
-	-	m2s−1	kJmol−1	eVatom−1	m2s−1	-	-
Ti	4−3	1.12 × 10−1	261.5	2.71	2.38 × 10−19	-	[163]
		9 × 10−5	223.8	2.32	6.77 × 10−20	Calc	[36]
Zr	4−4	7.28+10.4−4.29 × 10−2	242	2.51	3.2 × 10−18	531−640	[164]
V	5−3	6.05 × 10−12	82.0	0.85	1.74 × 10−17	-	[165]
		1.6× 100	303	3.14	5.35 × 10−21	-	[163]
		1 × 10−4	241	2.50	5.18 × 10−21	Calc	[36]
Nb	5−4	1.66 × 10−11	82.22	0.85	4.61 × 10−17	350−480	[166]
Cr	6−3	3.01 × 10−11	64.4	0.67	1.0 × 10−15	250−605	[167]
		10	282	2.92	8.78 × 10−19	-	[168]
		6.75 × 10−1	261.5	2.71	1.44 × 10−18	-	[161]
		7 × 10−5	199.7	2.07	2.24 × 10−18	Calc	[36]
Mo	6−4	1.4 × 10−3	250	2.59	1.79 × 10−20	-	[169]
Mn	7−3	1.04 × 10−2	211	2.19	5.73 × 10−17	460−660	[170]
		2.2 × 10−5	120.5	1.25	1.58 × 10−13	450−650	[32]
		1.35 × 10−2	211	2.19	7.44 × 10−17	-	[161]
		2 × 10−5	166.9	1.73	1.05 × 10−16	Calc	[36]
Fe	8−3	4.1 × 10−13	58.16	0.61	5.0 × 10−17	350−630	[171]
		7.7 × 10−1	221	2.29	8.95 × 10−16	-	[168]
		1.35 × 10−2	190	2.00	1.95 × 10−15	-	[172]
		3 × 10−5	145.7	1.51	4.28 × 10−15	Calc	[36]
Co	9−3	1.41 ± 1.37 × 10−2	168.8 ± 6.75	1.75 ± 0.07	5.52 × 10−14	-	[173]
		1.1 × 10−10	83.26	0.86	2.6 × 10−16	350−630	[171]
		1.93 × 10−2	168	1.75	8.57 × 10−14	-	[161,168]
		1.6 × 10−6	112.9	1.17	3.75 × 10−14	Calc	[36]
Ni	10−3	4.4 ± 3.l × 10−4	146 ± 5.8	1.51 ± 0.06	5.99 × 10−14	-	[173]
		2.9 × 10−12	65.69	0.68	1.0 × 10−16	350−630	[171]
		4.1× 10−4	144.7	1.50	6.83 × 10−14	-	[161]
		2 × 10−4	137.0	1.42	1.1 × 10−13	Calc	[36]
Cu	11−3	6.47 × 10−5	135.0 ± 1.12	1.40 ± 0.011	4.88 × 10−14	-	[174]
		4.37 × 10−6	120	1.25	3.39 × 10−14	-	[158]
		2.9 × 10−5	130 ± 6.7	1.35 ± 0.07	4.76 × 10−14	-	[175]
		4.44 × 10−5	113.8	1.18	9.06 × 10−13	Calc	[176]
Ag	11−4	1.18 × 10−5	116.4 ± 0.59	1.21 ± 0.006	1.61 × 10−13	-	[174]
Zn	12−3	2.59 × 10−5	120.7 ± 0.56	1.25 ± 0.006	1.80 × 10−13	-	[174]
		2.0 ± 0.8 × 10−5	120.7 ± 1.92	1.25 ± 0.02	1.39 × 10−13	-	[173]
		1.0 × 10−4	130	1.34	1.6 × 10−13	-	[177]