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Tham khảo tài liệu 'materials science and engineering handbook part 12', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Table 353. Selecting Diffusion Activation Energy in Metallic Systems Sheet 14 OF 33 Metal Tracer Crystal Form Purity Temperature Range C Activation Energy Q kcal moL1 Frequency Factor Do crrr s 1 b-Praseodymium Pr142 p 99.93 800-900 29.4 8.7 Zinc Cu64 S c 99.999 338-415 29.53 2.22 P-Titanium Ni63 p 99.7 925-1600 29.6 9.2 X 10 3 Aluminum Cd115 s 99.999 441-631 29.7 1.04 Zinc Au198 s c 99.999 315-415 29.72 0.29 Zinc Au198 S c 99.999 315-415 29.73 0.97 Calcium c14 99.95 550-800 29.8 3.2 X 10 5 Selenium S35 s c 60-90 29.9 1700 b-Zirconium Zr95 p 1100-1500 30.1 2.4 X IQ-4 y-Uranium Au195 p 99.99 785-1007 30.4 4.86 X 10 3 P-Zirconium g235 p 900-1065 30.5 5.7 X 101 P-Titanium Co60 p 99.7 900-1600 30.6 1.2 X 10 2 Source data from Askill J. in Handbook of Chemistry and Physics 55Weast R.C. Ed. CRC Press Cleveland 1974 F61. 2001 CRC Press LLC Table 353. Selecting Diffusion Activation Energy in Metallic Systems Sheet 15 OF 33 Metal Tracer Crystal Form Purity Temperature Range C Activation Energy Q kcal moL4 Frequency Factor Do crrr s 1 b-Zirconium Be7 p 99.7 915-1300 31.1 8.33 X 10 2 P-Titanium Ti44 p 99.95 900-1540 31.2 3.58 X 101 a-Zirconium Nb95 p 99.99 740-857 31.5 6.6 X 10 9 P-Titanium Fe59 p 99.7 900-1600 31.6 7.8 X 10 3 b-Titanium Sn113 p 99.7 950-1600 31.6 3.8 X 104 Niobium c14 p 800-1250 32.0 1.09 X IQ-5 Magnesium Mg28 S c 467-635 32.2 1.0 P-Titanium V48 p 99.95 900-1545 32.2 3.1 X 101 Aluminum Cu64 s 99.999 433-652 32.27 0.647 P-Titanium Sc46 p 99.95 940-1590 32.4 4.0 X 10 3 Magnesium Mg28 s c 467-635 32.5 1.5 P-Zirconium p32 p 99.94 950-1200 33.3 0.33 Source data from Askill J. in Handbook of Chemistry and Physics 55Weast R.C. Ed. CRC Press Cleveland 1974 F61. 2001 CRC Press .
