Gordon England Surface Engineering Forum



Re: need a comparison between

Posted by Gordon England (62.252.0.12) on 16:10:36 04/05/05

In Reply to: need a comparison between posted by Omry Karplus


Galvanising and thermal spray zinc coatings are very similar in that they both provide very effective galvanic protection to iron and steel substrates. they will protect small adjacent un-coated areas and work without forming a 100% complete barrier to the environment as needed with many other paint/coating systems.

The advantage with thermal spray zinc coatings:
1. Life of coating is primarily effected by coating thickness/mass. Thermal spray coatings can be applied thicker and so extend life.
2. Can be applied to objects not suitable for hot dipping, on-site structures, low temperature process (substrate)
3. Rough texture can be better for accepting additional paint finish.

Advantages of galvanising:
1. Thermal spray is a line of sight process, so galvanising may be better for parts with complex shapes and out of sight areas.
2. Galvanising produces metallurgical bond, is denser and has a smooth finish.

Probably more pros and cons could be added.


Regards Gordon


Follow Ups:


Surface Engineering Forum

Surface Engineering Message Board Archive

Surface Engineering Message Board Archive Index

Search Message Boards Archives

www.gordonengland.co.uk





GoogleCustom Search

Post A Message!

Gordon England Surface Engineering ForumPlease go to the new Surface Engineering Forum as this old message board is a read only archive. Please copy and paste relevant information or link to the page if you wish to reactivate a thread on the new forum.







Gordon England Independent Thermal Spray Coating Consultant
Telephone: +44 (0)1252 405186

PLEASE CLICK HERE TO EMAIL

Site Links

Introducing

Nature of Thermal Spray Coatings

Surface Engineering in a Nutshell

Surface Engineering Forum

Thermal Spray Gun Repair Service

Plasma Consumable Parts

Thermal Spray Powder Supplies

Applications:

Thermal Spray Coatings on Carbon and Glass Fibre Reinforced Polymers

HVOF Coating of Paper Making Roll

Abradable Coatings

Photomicrographs

Thermal Spray Processes:

Combustion Wire Thermal Spray Process

Combustion Powder Thermal Spray Process

Arc Wire Thermal Spray Process

Plasma Thermal Spray Process

HVOF Thermal Spray Process

Detonation Thermal Spray Process

Plasma Flame Theory

Cold Spray Coating Process



Wear and Use of Thermal Spray Coatings

Corrosion and Use of Thermal Spray Coatings

Glossary of Thermal Spray and Surface Engineering Terms

Image Directory for Thermal Spray Coatings

Plasma Gas Flow Information

Plasma Gas Flow Correction Calculator

Contact Form

Links to other interesting sites related to thermal spray and surface engineering

Reciprocal Links

Periodic Table of the Elements

SI Units

Calculators for Conversion between Units of Measurement

Hardness Testing

Surface Engineering Message Board Archive

Surface Engineering Message Board Archive Index

Search This Site


Photography Gallery2

Photography Gallery3


© Copyright Gordon England