Black Oxide??

[mykulmorris]

Anyone ever use Black Oxide coating??? I've seen it on machined parts and it looks good, Bet it would look great on my knives(better than my cold blue finish). Is there a home brew kit you can get???

 

[308sniper]

I think you are referring to Parkerizing. Do a google search on parkerizing kits and you will find several. In a nut shell Parkerizing or "park" etches the metal through a heated chemical process leaving a crystalline surface. This new surface gives area for lubricants, or coatings, to adhere too. The military has been using this method of metal protection for one hundred years, maybe more. I have parked many items before coating them and have done guns and knives and left them that way. Park comes in two variations Zink and Manganese. Zink tends to be a little heavier of a crystalline coating. Park is normally a grey to dark grey in color. By using pre treatments, black park can be achieved. Park is a very simple process. Blast, submerge metal in heated park solution ( around 180 degrees) Stop the chemical reaction (I do this by submerging the part in oil). Only carbon steels can be parked. All tools used in the process must be made of stainless.
Hope this helps

Will

M1 Garand I have parked with Zink

 

[blindhogg]

As 308 mentions parkerizing is what you are after it sounds like.
I park in my workshop quite often when I tinker with guns, its best to bead/oxide blast or sand blast before doing it. Its very easy to do just mix solution w water and heat and dip. Can be done in kitchen or in workshop w if you have a hot plate to boil solution.
Zinc park= grey color
Manganese park= black color
Chris W.

 

[P.Brewster]

I think commercial black-oxide coating (as seen on hex wrenches etc) is done hot, and can't really be done at home.

The DIY kits are done cold, and the coating is not as durable. (example: caswell "black oxide kit", or MSC "tool black" ).

 

[Steven Penner]

http://www.precisionbrand.com/ProductsCatalog/PBPCategoryDetails.aspx?Catid=37


I have a kit, but haven't used it yet.

 

[mete]

One black oxide is done in steam at 1100 F which of coarse is too hot for blades !

 

[Last Visible Canary]

http://www.blackoxide.biz/

the process the describe at that website is below 300 degree's, within low alloy carbon steels safe temper range.

 

[mykulmorris]

Thanks everyone!!!

 

[jll346]

Here is a link to a product I know Scott Tanguay used on some knives and they looked awesome. http://www.caswellplating.com/kits/black.htm

 

[jcbenav76]

I know that this comment is late to the game, but I used Sur Fin Chemicals NI-Black 40. This is the results that I got, but I could have done better.

https://imgur.com/a/HsoYlSj

I went with Sur Fin cause I also wanted to apply same type of finish, but in bronze, to a Para 3 that I got on trade with a bronze Lynch clip. So I did the blade, liners, and screws/lanyard hole.

https://imgur.com/a/nFyavtu