PVD-based TiN coating over Ni substrate?
PVD-based TiN coating over Ni substrate?
(OP)
I'm trying to find out what type of coating technology might have been used on a small snip blade cutting tool. EDS results clearly indicate the 1st layer (directly on surface) is Ni. The layer on top of this appears to be TiAlCrN so was most likely created by PVD coating process.
It's my understanding that PVD coatings have a deposition temperature of around 700-800 degrees F. My question is how could this layer have been applied without negatively affecting/tempering the below Ni layer and Fe base metal?
I would appreciate any advice very much.
It's my understanding that PVD coatings have a deposition temperature of around 700-800 degrees F. My question is how could this layer have been applied without negatively affecting/tempering the below Ni layer and Fe base metal?
I would appreciate any advice very much.





RE: PVD-based TiN coating over Ni substrate?
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RE: PVD-based TiN coating over Ni substrate?
The chemical analysis results of the base material seem to indicate a carbon steel of grade 1060 was used. However, there are additions of Si (.28 wt%), Cr (.23 wt%) and Mo (.20 wt%). Could it be possible that this is some sort of modified steel that would require a tempering temperature above 700-800 F like you mention? Sorry, I should have included this info with my original post.