C - Chemistry – Metallurgy – 03 – C
Patent
C - Chemistry, Metallurgy
03
C
C03C 17/27 (2006.01) C03C 17/22 (2006.01)
Patent
CA 2536770
In certain example embodiments, a coated article includes respective layers including diamond-like carbon (DLC) and zirconium nitride before heat treatment (HT). During (HT), the hydrogenated DLC acts as a fuel which upon combustion with oxygen produces carbon dioxide and/or water. The high temperature developed during this combustion heats the zirconium nitride to a temperature(s) well above the heat treating temperature, thereby causing the zirconium nitride to be transformed into a new post-HT layer including zirconium oxide that is scratch resistant and durable.
Dans certains modes de réalisation, l'invention concerne un article revêtu comprenant des couches respectives renfermant du carbone sous forme de diamant amorphe (CDA) et du nitrure de zirconium avant un traitement thermique (HT). Pendant le HT, le CDA agit comme un combustible qui, lors d'une combustion avec de l'oxygène, produit du dioxyde de carbone et/ou de l'eau. La haute température atteinte pendant cette combustion réchauffe le nitrure de zirconium à une température nettement supérieure à la température de traitement thermique, ce qui provoque la transformation du nitrure de zirconium en une nouvelle couche post-HT renfermant de l'oxyde de zirconium résistant à la rayure et durable.
Guardian Industries Corp.
Macpherson Leslie & Tyerman Llp
LandOfFree
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