after en further layer systems are possible/necessary
Cu,
Ni, Cr |
|
Cu,
Ni, black Cr |
|
Cu,
velours Ni, Cr |
|
Ni-sulfamate,
Cu and/or Ni, Cr |
|
second
en |
|
second
en with PTFE or SiC or Diamond or B4C |
|
Zn
plus yellow or blue or black passivation |
|
Zn/Fe
alloy plus yellow or black passivation |
|
Zn/Ni
alloy plus yellow or black passivation |
|
lacquer,
different colour - cathaforetic |
|
physical depositions, TiN, Ti(C,N), CrN |
