95Ni 5Al bond strength
01-14-2016, 06:09 PM,
95Ni 5Al bond strength
Hello group,

I've seen man technical data sheets that state that a ~9000 psi bond strength can be achieved with 95Ni 5Al wire.
I have a TAFA 9000 that is... shall we say... slowly dying, but still functional.

I am curious why I am only able to achieve ~5000psi bond strength with a 410SS substrate coupon using 24 grit AlOx as the prep.

Could the TAFA 9000 be causing the issue because it is slowly fading away?
Voltage is difficult to maintain and history has shown that to be the sign of near death for a TAFA 9000.

Any help would be appreciated.
01-15-2016, 05:09 PM, (This post was last modified: 01-15-2016, 05:23 PM by loriolo.)
RE: 95Ni 5Al bond strength
Hi Alaskangrown
I obtained with Ni5Al 1,6 wire ever about 64 MPa (≈ 9200 psi) with an arc spray AWS400, and in the past with a Smartarc, I obtained about 62 MPA (≈ 9000 psi), I think that your system needs a maintenance, you must check the rectifier and the geometry of the torch, and after this if every think work well you must do a parameters setting (Amps. /Spray distance/ air pressure, etc..)

Hi alaskangrouwn
Again, Before I do not see well that your substrate material is a 410ss, I obtained that values on 314 and steel, it means that you must spray on martensitic grade stainless steel, and with this kind of steel, is necessary to pay attention on preparation method, because is very difficult to obtain a good blasted profile, try with corundum grit blasting or harder blasting abrasive.
Best regards

Possibly Related Threads…
Thread Author Replies Views Last Post
  Info needed on Bond Strength for Thermal Spray powders hereticgame 1 2,161 10-10-2017, 11:39 AM
Last Post: Vadim Verlotski
  HVOF T800 Tensile Bond Strength issue wgg237 2 4,156 03-05-2015, 01:52 AM
Last Post: wgg237
Shocked Hard Crome Plating Bond strength Met.Eng. 4 5,883 02-24-2015, 02:37 AM
Last Post: Simon Kim
  Arc Wire Spraying Bond Strength wtaz 4 4,730 12-04-2014, 12:02 AM
Last Post: wtaz
  Abradable Coating-Bond Strength rayudugirish 9 11,696 01-06-2014, 09:55 PM
Last Post: derek
  Question on bond strength. Ghostwheel 4 4,758 10-13-2012, 10:03 AM
Last Post: kschewe
  Suggest on coating bond strength tester feifei0609 3 4,401 08-14-2012, 03:10 PM
Last Post: feifei0609
  Surface preparation and its effect on fatigue life and bond strength WMW 4 7,260 06-29-2010, 08:41 AM
Last Post: drramc
  95/5 Bond Strength George Brown 1 3,386 06-02-2010, 09:33 AM
Last Post: Gordon
Question Bond strength of Arc Sprayed Coating sumant 3 9,821 07-31-2008, 12:54 PM
Last Post: LEN WOOD
  tensile bond strength and met examination TurbineRepair 7 8,438 07-23-2008, 03:33 PM
Last Post: TurbineRepair
  Bond strength abhalla 2 8,976 07-19-2006, 07:10 AM
Last Post: Madila Awalini

Users browsing this thread: 1 Guest(s)

Surface Engineering Forum Sponsor - Alphatek Hyperformance Coatings Ltd