Molibdenum sprayed by plasma
09-28-2016, 08:43 AM,
#1
Molibdenum sprayed by plasma
Hello, have anyone experience with spraying molibdenum by plasma? I use reference parameters for f4mb gun, which are a little bit changed due to better morphology but i've achieved a small hardness below 500HV. Any suggestions? I've checked the range of paremeters 600-630A, 40-47Ar, 8,5-10 H2.

Regards
Reply
09-30-2016, 03:33 PM,
#2
RE: Molibdenum sprayed by plasma
Hi Anne

With Molybdenum in order to have a higher hardness needs to be oxidized, and as you know, with APS technologies is not possible to have an oxidized coating, (moly is reactive with oxigen gas only) maybe with the external air nozzles on the gun with the correct pinch effect, you can oxidize the molybdenum, but the best technologies to have higher hardness on the moly coating is by using HVOFWire that is a chipper technology, but has a very good result
Best regards
Luigi
Reply
10-03-2016, 08:52 AM,
#3
RE: Molibdenum sprayed by plasma
Thanks a lot. I know that molybdenum plasma sprayed dosn't have the best properties, but I wanted to test this alternative.
Reply
10-06-2016, 02:31 PM,
#4
RE: Molibdenum sprayed by plasma
(10-03-2016, 08:52 AM)anne Wrote: Thanks a lot. I know that molybdenum plasma sprayed dosn't have the best properties, but I wanted to test this alternative.

We achieved good quality with TAFA 13T wire spraying.
Reply




Possibly Related Threads…
Thread Author Replies Views Last Post
  Inconel 625 Plasma Sprayed Compressor Cylinder (ID) demionkrishan 4 1,178 06-17-2019, 01:32 PM
Last Post: demionkrishan
  Environmental affect on plasma sprayed coatings nshepher 0 1,022 06-26-2018, 09:43 PM
Last Post: nshepher
  Annealing of plasma-sprayed WC-Co coating wangqun72 5 6,057 12-15-2010, 07:28 AM
Last Post: ives
  plasma sprayed chrome oxide raviswanadha 1 5,849 04-02-2008, 03:35 PM
Last Post: Gordon
  removing of plasma sprayed coating karunanidhi 4 9,830 11-20-2006, 08:36 AM
Last Post: karunanidhi



Users browsing this thread: 1 Guest(s)





Surface Engineering Forum Sponsor - Alphatek Hyperformance Coatings Ltd