Thermal spraying
01-17-2007, 08:44 AM,
#1
Thermal spraying
I would like to ask the differences between oxyfuel spraying and plasma spraying and what are the advantages of thermal spraying over electroplating.
Reply
01-18-2007, 07:50 PM,
#2
RE: Thermal spraying
Hi melrose

Sign0016 to the Surface Engineering Forum.

For basic introduction to the various thermal processes follow links:

Combustion Wire Thermal Spray Process
Metal Spraying

Combustion Powder Thermal Spray Process
Flame Spray Process

High Velocity Oxygen Fuel Thermal Spray Process
Detonation Thermal Spraying Process
Plasma Spray Process
Plasma Flame Theory

Though not oxyfuel or plasma the following links for other thermal spray processes:
Arc Spray Process
Cold Spray Process

Some advantages for thermal spray over electroplating:
  • Much larger range of coatings
  • Better suited to large components
  • More portable process
  • Little risk of hydrogen embrittlement
  • Can be more environmentally friendly
  • Thicker coatings generally

Some advantages of electroplating over thermal spray
  1. Better for thin dense coatings
  2. Better for coatings where oxides and porosity are not wanted
  3. Better for small and complex shaped components
  4. Bright smooth finish, finishing not usually required

That's off the top of my head, sure there are many more, but I think you need to consider specific coating types and the applications to make sensible comparison. Basically, one process is not better than the other until you evaluate what the coating is intended for. For example what would you choose for a gold coating on a watch strap or say a ceramic coating on a aircraft engine part. These examples are pretty clear cut, but say choosing between hard chromium electroplate and an alternative HVOF WC/CoCr coating is not so simple.
Reply
01-19-2007, 11:54 AM,
#3
RE: Thermal spraying
Thanks a lot Gordan! You are great!
Reply




Possibly Related Threads…
Thread Author Replies Views Last Post
  HVOF/HVAF Thermal Spraying connoramcguigan 0 1,015 11-13-2018, 05:13 PM
Last Post: connoramcguigan
  YSZ thermal Spraying by HVOF and Flame mgbaca1a 2 1,029 09-24-2018, 08:57 PM
Last Post: mgbaca1a
Question thermal spraying simulation software ??? vladutzu86 4 7,800 02-08-2015, 05:29 PM
Last Post: kyawkyaw
  Thermal Spraying of Silica Nadiir 2 3,529 11-29-2014, 10:58 AM
Last Post: Nadiir
  How to reduce the intersplat boundaries in thermal spraying hustzc 3 4,263 05-16-2012, 01:30 AM
Last Post: Gordon
  Thermal Spraying Plastics PPSABoyce 2 7,521 11-10-2011, 01:06 PM
Last Post: MichiganMan
  How to thermal-spraying with very large area hustzc 3 4,425 08-25-2011, 01:21 PM
Last Post: LEN WOOD
  learner on thermal spraying graham 4 6,526 12-29-2008, 04:29 PM
Last Post: graham
  Thermal spraying copper parts DVB 6 8,650 03-19-2008, 04:50 PM
Last Post: Gordon
  Thermal spraying coating develop William 6 7,698 03-17-2008, 06:03 AM
Last Post: William



Users browsing this thread: 1 Guest(s)





Surface Engineering Forum Sponsor - Alphatek Hyperformance Coatings Ltd