Titanium adhesion
06-17-2011, 04:30 PM, (This post was last modified: 06-21-2011, 03:19 PM by Superspray.)
#1
Titanium adhesion
Hi everyone, I´m spraying pure titanium for a porous coating, but I can´t get a good adhesion. I´m working with a APS system with a F4 gun. I tried to coat first with titanium around 100 micron grain size as bond coat. Is this the solution? thanks for helping me!
Reply
06-22-2011, 12:37 AM,
#2
RE: Titanium adhesion
Hi Superspray

Sign0016 to the Surface Engineering Forum.

Can you give us more information on your process, coating, substrate and preparation etc..?

Are there restrictions/limitations for example could you use a NiAl bond coat?

Are you using some form of argon shield?

Atmospheric plasma spraying titanium usually leads to good bonding (almost self-bonding), but becomes extremely brittle due to uptake of oxygen, nitrogen (and hydrogen if present).
Reply
06-27-2011, 03:23 PM,
#3
RE: Titanium adhesion
Hi Gordon,
thanks for your reply. On my work, I´m using a F4 gun with Argon and Hidrogen for the plasma and Argon as transportation gas. I must use only titanium for coating. The coating substrate are Ti alloy and CoCr alloy. My samples are always cleaned with methanol in ultrasonic bath. Then, they are grit blasted with Corindum (aluminum oxide) F40 first and F14 for the finish roughness. What is the recommended roughness for coatings with big grain size powder? The Ti powder have grain size about 250 and 350 microns. What is the main parameter when I have to coat with a big size titanium powder?
Thanks, regards.
Sorry my English!


(06-22-2011, 12:37 AM)Gordon Wrote: Hi Superspray

Sign0016 to the Surface Engineering Forum.

Can you give us more information on your process, coating, substrate and preparation etc..?

Are there restrictions/limitations for example could you use a NiAl bond coat?

Are you using some form of argon shield?

Atmospheric plasma spraying titanium usually leads to good bonding (almost self-bonding), but becomes extremely brittle due to uptake of oxygen, nitrogen (and hydrogen if present).

Reply




Possibly Related Threads…
Thread Author Replies Views Last Post
  Adhesion testing MartinFe 2 3,078 05-04-2015, 01:49 PM
Last Post: djewell
  Adhesion to Shot Peened Titanium ServiceTech 1 2,705 02-10-2014, 10:48 PM
Last Post: KevinS
  How can adhesion of Gold Germanium alloy on GaAs substrate be improved??? xoobiii 0 3,028 02-21-2012, 12:09 PM
Last Post: xoobiii
  High Temp Adhesive for TSA Adhesion test wrjordan 3 5,827 07-22-2011, 06:51 PM
Last Post: MichiganMan
  Non-stick and adhesion properties of coatings qwerty 2 5,972 12-15-2010, 06:46 AM
Last Post: ives



Users browsing this thread: 1 Guest(s)





Surface Engineering Forum Sponsor - Alphatek Hyperformance Coatings Ltd