Originally Posted by Alpo
Show of hands. How many of you, like me, had never heard of Cera Met, and thought that he was misspelling ceramic, and wondered what clay pots had to do with a gun barrel? Come on, 'fess up.
Bioman, I don't have any idea. But if it bonds to the bore, and it's so strong and it's an 80 on the Rockwell C scale, why does it need to keep being reapplied?
I’m an engineer, I think I understood what I was reading
A couple of quotes:
a durable, heat-resistant alloy formed by compacting and sintering a metal and a ceramic substance, used under conditions of high temperature and stress.
Also from Wikipedia
Ceramics are used in the manufacture of knives. The blade of a ceramic knife will stay sharp for much longer than that of a steel knife, although it is more brittle and can be snapped by dropping it on a hard surface.
Ceramics such as alumina and boron carbide have been used in ballistic armored vests to repel large-calibre rifle fire. Such plates are known commonly as small-arms protective inserts (SAPI). Similar material is used to protect cockpits of some military airplanes, because of the low weight of the material.
Ceramic balls can be used to replace steel in ball bearings. Their higher hardness means that they are much less susceptible to wear and can offer more than triple lifetimes. They also deform less under load meaning they have less contact with the bearing retainer walls and can roll faster. In very high speed applications, heat from friction during rolling can cause problems for metal bearings; problems which are reduced by the use of ceramics. Ceramics are also more chemically resistant and can be used in wet environments where steel bearings would rust. The major drawback to using ceramics is a significantly higher cost. In many cases their electrically insulating properties may also be valuable in bearings.
Ceramics are some of the hardest substances in the world, the heat shield tiles on the space shuttles are ceramic. There are ceramics that are harder than diamonds. Typically ceramics though they can be very hard are usually brittle so they have a limitation which is one reason this surprised me.
As to why it would need to be re-applied; that makes sense, everything wears eventually.
No idea if this stuff works at all, but I find it interesting that Otis markets it given their good reputation. Here is the link. http://www.otisgun.com/cgistore/stor...tup=1&cart_id=
Heres a link to a manufacturer of cermet tooling, I recalled seeing this stuff a few yearsa ago..so it's for real. If it does or does not work in this application is anyones guess.