Which coating for a magnet should I purchase
Hello, I'm new here and I'm wondering whether I should buy a N52 Parylene coated magnet or wait to purchase a titanium nitride coated magnet
I found the Parylene coated magnet here: https://supermagnetman.com/collections/neo-discs/products/d1005-10-parylene?variant=31273137283
However, I've heard from someone that the same manufacturer is going to release a batch of N55 titanium nitride coated magnets soon.
Should I wait or go ahead with the Parylene coated magnet?
Comments
I haven't had good experience with SMM's magnets, and from what I understand magnet failure is a VERY common issue with this vendor. I'd be interested in testing out the TiN magnet when they're available, but given SMM's reputation I would be cautious about trusting their safety.
I've emailed them a few weeks ago and they said, as of June 1st, the TiN magnets would be released in 1 - 2 weeks. As of today, they're still not in stock. I'm considering purchasing a few dozen of their Parylene magnets and testing all of them in a saline solution. The magnets that fail i'll disregard and the ones that survive i'll choose one to implant. I'm hoping to get at least a few years out of my implant, so I'm not sure if this is a good idea or not since I'm aware that Parylene has the tendency to crack.
Alright so i got the magnets and they're really powerful for their size. However, I'm concerned about the edges of the coating. Every magnet has at least one side where the edges looks like it could be exposed. I'm going to do an experiment in saline solution to be safe.
Normal side:
https://imgur.com/2nmQB1y
Possibly exposed side:
https://imgur.com/bt44XhY
https://imgur.com/ptTeH1g
@Cassox I'm not sure yet, @dieselpwr said he emailed SMM magnets and told me that they double coat their magnets. I'm testing the magnet in the picture in saline solution as of now and I'll check back later tomorrow. If the possibly exposed side is indeed exposed or seems too sketchy, do you think it would be safe you use some FDA8 epoxy to specifically target the questionable side?
Looks good to me, the first coat leaves the flip side uncoated so they flip the magnet and do a second coat, the already coated sides turn nearly twice as Tin colored/darker, and the other side stays the same colour/1coat of tin colour
I still have thousands of M31s. So, all the resin tests I'm doing are pretty much exactly what you're saying.. a safe resin over a maybe ok TiN coating.
@nothot any updates? have you already sunk them in saline? what do you think about the magnets, are they any good?
This will also serve as a multi-coating barrier and hopefully extend the lifespan of the magnet in my finger
sounds good, so they havent begun to rust at all? idk if extra coating is necessary. and yes they are indeed douple coated whit only Tin, its a raw neodymium and 2 layers of Tin on top of it.
this message under is from smm account manager
"However, these are coated with a double layer of TiN only. The reason for this is because of hang points on the magnet. If we did a single layer then there is a good possibility that the hang points would not be coated. A double coating is what will help prevent this. "
Nice! i may order 20 magnets soon, keep us updated how the implanting goes and etc! i was thinking of implanting one in my left hand index or ring finger,, i need one for sensing mainly so does anybody which finger is the most sensitive? ring finger seems to have 2 major nerver going in it, but i would prefer index finger just because its good for pointing lol
These are on the site now
https://supermagnetman.com/products/d1005b-10-tin