DLC/PVD Misinformation

Wow, Darrell. You sure made this thread a keeper. Thanks for taking the time and making the effort to educate us on your processes! Always a pleasure to hear from a real expert on the subject at hand.

Robert
 
Ionbond said:
NONE/ZERO/ZIP of the Family of Vacuum Deposited Coatings ARE GOOD Corrosion Barriers, That being said, these coatings can’t rust because these is no presents of Iron/Ferrite in the coating itself.. It’s a coating only 2-4 Microns in thickness with microscopic pin holes, corrosion can start there and on the cutting edge migrating under the coating causing rust…

The Benefit of coatings for corrosion is they absorb oil like a sponge, Maintain your knife, rinse it off from time to time and reapply a coat of oil, wipe dry and you’ll have Great Corrosion Protection…

We all want a knife that, Won't Rust, Light Weight, Stays Sharp forever, with the latest materials.. It doesn't exist, But were working on it... almost forgot.. For Under $100.00 Made in the USA...

Darrell
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Man, have I been looking for this post!
I *knew* I had read this info from a reputable source, and was looking for it when I was recently trying to explain this in another post (massive over at Spyderco factory forum).

I thought Mr Janich had posted it.

Thanks, rycen!
 
One thing , how much PVD coating /any type/ will be scratch resistant most depends on hardness of surface to which it was applied and the thickness of the applied layer of course . As strong DLC is if it is applied on relative soft steel ................will be easy to scratch it , to easy ! One more thing , its application is not to make ANY material scratching resistant .PVD coatings was used in industry for low friction characteristics they have .............
 
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rycen said:
Bump for useful information
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Thanks for bumping. This was both an entertaining and informative thread.

What I don't get is why knife manufacturers coat super steels like M390 20CV, etc. For a tactical look? What's next, "DLC"-coated MagnaCut blades? Larrin, DLC is coming for you. lol
 
Locutus D'Borg said:
Thanks for bumping. This was both an entertaining and informative thread.

What I don't get is why knife manufacturers coat super steels like M390 20CV, etc. For a tactical look? What's next, "DLC"-coated MagnaCut blades? Larrin, DLC is coming for you. lol
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I don’t think manufacturers coat their blades for this purpose, but it is an added bonus. Here is a blade coated with TiN at 82 HRC that is being used to “steel” the micro edge on a ZDP-189 blade (edge leading). The photo is a little misleading because it looks like I am using the ridge between the hollow grind and the flat. Use the flat.View attachment 1830045
 
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