Offers free trial classes

Numeric Ability

Grupo Escalera, Universidad Simón Bolívar, Venezuela

Jul 2003 - May 2007

Maths exercises

1. Mounting Supervisor Steel Structure
2. Autocad Design 2D
3. Interpretations of drawings.
4. Control of materials related to mounting.

1. Autocad Design 2D
2. Interpretations of drawings.
3. Field questions and work´s orders writing.
4. Distribution & Control of Drawings & Field Orders

Materials Engineer

Universidad Simón Bolíva, Venezuela

Sep 1997 - May 2007

Best trainer with more years in the group

Distrito Capital, Venezuela

Year Of Passing: 2006

The hydrogen damage susceptibility in hot dip galvanized and zinc electrodeposited on steel in sour environment considering the surface roughness effect, microstructure and coating thickness is presented. In spite of their different morphologies and coating corrosion these materials make more difficult hydrogen diffusion due to their barrier effect. The hydrogen diffusion coefficient gives a value between 10-10 and 10-12 cm2/s in both coatings. The gradual increase of permeation current density without reaching time lag as well as the smaller damage on hot dip galvanized substrate surface suggests this coating could be more protective against hydrogen permeation due to its thickness and intermetallics. Hydrogen ingress to steel could be delayed by different reticular parameters associated to intermetallics. Zinc electrodeposited barrier effect could be due to defects in coating. There were not differences between coating surface roughness parameters.