PDF (0.8MB)

More documents

Recommendations

Info

Road mud effects Why is the trailer test worse? The mud provided chlorides and extended time of wetness. Reduce dilution/ washing effects. Significant acidification. Dependant on salt composition. Date: 2004-01-13 • Page: 10 • Hydro Aluminium
Mud weight vs. Relative humidity Normalised weight 1,1 1 Mud incl. AlCl3 Mud 5x'Maritime' Visually wet 0,9 0,8 0,7 0,6 0,5 0 10 20 30 40 50 60 70 80 90 100 Relative humidity (%) ’Maritime’ salt solution from Dutch roads Species Concentration (g/l) NaCl 22,6 MgCl 2 x 6H 2 O 7,8 Na 2 SO 4 4,0 CaCl 2 1,4 KCl 1,0 MgSO 4 x 7H 2 O 0,05 Ca(NO 3 ) 2 0,04 NH 4 NO 3 0,04 The mud is made of sea sand, kaolin and salt solution The point of deliquescence for NaCl at RT is ~76 %, MgCl 2 and CaCl 2 ~30 % Date: 2004-01-13 • Page: 11 • Hydro Aluminium
Page 1 and 2: Hydro Aluminium Light Metal Surface
Page 3 and 4: Introduction Maybe little of a gene
Page 5 and 6: Accelerated lap shear testing A ra
Page 7 and 8: Failure surfaces, after 1 year on t
Page 9: Main ageing notes Outdoor, wit
Page 13 and 14: pH values measured for the salt sol
Page 15 and 16: Test conditions Test plates were c
Page 17 and 18: Average weight loss for the differe
Page 19 and 20: Average pit depth after four weeks
Page 21 and 22: Requirements on a corrosion screeni
Page 23 and 24: Salt solutions Salt no. 1 2 3 4 5 6
Page 25 and 26: Tested materials Adhesive Heat c
Page 27 and 28: 5754 passivated, 3 months exposure
Page 29 and 30: Summary, salt solution tests Acidi
Page 31 and 32: Baseline testing, ambient condition
Page 33 and 34: Failure modes (2) Interfacial failu
Page 35 and 36: TEM, Altered layer on etch (2) Long
Page 37 and 38: Summary, environmental fatigue test
Page 39: Conclusion Durable bonded joints r

PDF (0.8MB)

Create successful ePaper yourself

Delete template?

Save as template?