Kassematerialer?

[willy]

Several types of coating have also been used on watches.PVD-DLC amongst them.The problems that have been with most of the coatings,is that they can get scratched.And since a scratch cannot just be polished out on these models,a new coating is the only answer.This is much more expensive than a polish.The coating that seems to be best in my opinion is the duratech treatment used by Seiko and Citizen.It is quite fantastic.I owned a Seiko Shogun with this coating,and after 6 months of daily use there was not even a hairline on it.I have talked with others who own watches with this treatment,and their experience was the same.Sinn also use something called tegmentering,that is also meant to be very robust,but i have no experience with it.
                                      There are many different types of ceramic used in making watches,and the quality can be very different from watch to watch.Stories about ceramic watches cracking sometimes are true.It is a strong material but sudden hard blows can crack it.There are some excellent articels written on the net about materials used in making watch cases.The most important thing in my opinion to remember about ceramic watches is the way the material is made.There is a cheap way of making it ,or a expensive way.Many of the cheap ceramik watches are not of the same strength as say a IWC or AP ceramic watch.