Method for coating cutting implements
A method for coating a cutting implement. The coating has titanium chromium nitride and provides the cutting blades with a satin silver appearance. In some embodiments, the titanium chromium nitride coating has a thickness in a range between about 0.3 microns and 0.5 microns, a surface roughness in a range of about 15 to 25×10 −6 inch/inch, and a hardness in a range of about 5.7 to about 9.1 gigapascals.
1 . A method for coating a cutting implement, the process comprising:
placing a cutting implement within a coating chamber;
cleaning the cutting implement; and
depositing a coating on the cutting implement, wherein the coating has a range of about 25 to 50 percent by weight titanium nitride and a range of about 50 to 75 percent by weight chromium nitride.
2 . The method of claim 2 wherein the coating is deposited by a process selected from a group consisting of reactive magnetron sputtering, cathode arc plasma process, chemical vapor deposition, physical vapor deposition, thermal spraying, or sintering after a dip coating.
3 . The method of claim 1 further comprising the step of evacuating the chamber prior to cleaning.
4 . The method of claim 1 , further comprising the step of introducing to the chamber a sputtering gas mixture comprising argon and nitrogen.
5 . The method of claim 1 wherein the cutting implement is a complementary blade device.
6 . The method of claim 1 wherein the cutting implement is a pair of scissors.
7 . The method of claim 6 wherein the cutting implement is a rotary style paper trimmer.
8 . A method for coating a cutting implement, the process comprising:
placing a cutting implement within a coating chamber;
cleaning the cutting implement;
selecting a sputtering current; and
depositing a coating on the cutting implement, wherein the coating has about 35% by weight of titanium nitride and about 65% by weight of chromium nitride
9 . The method of claim 8 wherein said sputtering current is in the range of 0.5 to 0.7 amperes.
10 . The method of claim 8 further comprising the step of evacuating the chamber prior to cleaning.
11 . The method of claim 8 wherein the coating is deposited by a process selected from a group comprising reactive magnetron sputtering and cathode arc plasma processes.
12 . The method of claim 8 wherein the cutting implement is a complementary blade device.
13 . The method of claim 8 wherein the cutting implement is a pair of scissors.
14 . The method of claim 8 wherein the cutting implement is a rotary style paper trimmer.
15 . A method for coating a cutting implement, the process comprising:
placing at least one cutting blade within a coating chamber;
evacuating the chamber to a predetermined pressure;
cleaning the blade within the chamber;
introducing to the chamber a sputtering gas mixture containing argon and nitrogen;
selecting a sputtering current in the range of 0.5 to 0.7 amperes; and
depositing a coating on the blade, wherein the coating has about 35% by weight of titanium nitride and about 65% by weight of chromium nitride and provides the cutting blade with a satin silver appearance.
16 . The method of claim 15 , wherein the coating is deposited by a process selected from a group comprising cathode arc plasma and reactive magnetron sputtering.
17 . The method of claim 15 further comprising the step of evacuating the chamber prior to cleaning.
18 . The method of claim 15 wherein the cutting implement is a complementary blade device.
19 . The method of claim 15 wherein the cutting implement is a pair of scissors.
20 . The method of claim 15 wherein the cutting implement is a rotary style paper trimmer.