Substrate preparation VS bonding strength
01-08-2018, 06:06 AM,
#1
Substrate preparation VS bonding strength
Hi All experts,


i have a question about substrate preparation and bonding strength relationship, does anyone have any data show their relationship.
eg. sand blasting with 46#WA on SS sample Ra 5, than coated with WC12Co coating 100 μm, bonding strength is around 74 MPa..........................Happy0193
Thanks a lot for your any experiences data share!
Reply
01-08-2018, 06:09 PM,
#2
RE: Substrate preparation VS bonding strength
Hi plzc126330

First, to show a relationship between coating bond strength and substrate preparation you need a coating that fails at the substrate/coating interface. Cohesive failures within the coating and glue failures will not be useful in showing a relationship.

In my experience the tungsten carbide based coatings always remain intact after testing, only the glue fails ( ~ 95 MPa ). This includes grit blasted and smooth ss steel substrates.
Reply
01-09-2018, 03:48 AM,
#3
RE: Substrate preparation VS bonding strength
(01-08-2018, 06:09 PM)Gordon Wrote: Hi plzc126330

First, to show a relationship between coating bond strength and substrate preparation you need a coating that fails at the substrate/coating interface. Cohesive failures within the coating and glue failures will not be useful in showing a relationship.

In my experience the tungsten carbide based coatings always remain intact after testing, only the glue fails ( ~ 95 MPa ). This includes grit blasted and smooth ss steel substrates.

Dear Gordon,

Thanks a lot for your reply!
so there how much influence in case with sand blasting or not VS bond strength value; so for WC coating there has not different for both preparation or not?
in case ceramics coating, any relationship for both condition?
thanks a lot!
Reply




Possibly Related Threads…
Thread Author Replies Views Last Post
  Good preparation for cast iron base material plzc126330 3 2,251 11-24-2016, 01:17 AM
Last Post: plzc126330
  Bonding coating for Cast steel subsrate plzc126330 5 3,635 08-15-2016, 09:01 AM
Last Post: plzc126330
  Surface Preparation of Aluminium acidic 2 3,287 05-09-2015, 01:59 PM
Last Post: CHI3
  Coating for Epoxy substrate webrits 2 2,861 03-20-2015, 03:09 PM
Last Post: Laurent
  BONDING WIRE wtaz 3 3,372 01-18-2015, 12:09 PM
Last Post: loriolo
  Babbitt - Bonding strength iwan-sedaryawan 7 8,369 11-19-2012, 04:11 PM
Last Post: loriolo
  hvof & bonding & amorphous coating hustzc 5 5,645 07-07-2012, 02:05 PM
Last Post: musheer
  Bonding Polymer (PU) to Stainless steel316L bullet74 2 3,477 04-10-2012, 06:24 PM
Last Post: SurfaTec
  metallographic preparation volf 2 6,386 01-25-2012, 12:48 PM
Last Post: jonini
  Surface preparation before spraying HVOF minh_8888 4 7,397 06-20-2011, 12:18 PM
Last Post: Met.Eng.
  Surface Preparation Coolguy 3 4,099 02-08-2011, 07:47 PM
Last Post: MichiganMan
  WC Co coating on bonding layer vevecaz 5 4,741 07-29-2010, 02:09 PM
Last Post: desMoira
  Spraying on Magnesium substrate Madila Awalini 9 7,128 07-05-2010, 04:01 AM
Last Post: Madila Awalini
  Surface preparation and its effect on fatigue life and bond strength WMW 4 7,007 06-29-2010, 08:41 AM
Last Post: drramc
  Bonding for Combustion/Flame Wire Spraying iwan-sedaryawan 3 5,937 02-10-2009, 04:59 PM
Last Post: iwan-sedaryawan



Users browsing this thread: 1 Guest(s)





Surface Engineering Forum Sponsor - Alphatek Hyperformance Coatings Ltd