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Since 1970s, metal base vacuum coatings such as MCrAlY have
been applied to the surface of Ni base alloy component to
increase its corrosion resistance against hot gas. Today,
this pvd coating has become an integral part of the design
and increase the efficiency for all modern aircraft turbine
and power generation turbine engines.
Its distinctive application is not only used
for corrosion protection, but also for thermal barrier coatings
(TBC). The hair-thick coating allows the part to work well
under a very high gas temperatures, which can be 100-150°C
higher than the melting temperature of the Ni-base superalloy
component. The firmly anchored roots and the loose tips
allow the coating to absorb high mechanical stresses which
are induced by the severe, rapidly varying, thermal cycling
of the gas turbine engines.
The most important factor determining the quality of the
TBC is the process that takes place inside the coating chamber.
Our coating has comformed to the following International
Quality Standards:
Adhesion Test 3 & 4 : ASTM B571
Salt Spray Test : ASTM B117 200 hours
Reliability Test : CSA B125, ASME A112.18, ASTM B117, B287,
B368
Products with Decorative Coating: door hinge, handle, lock
hardware, knife, kitchenware & sanitaryware, watch belt
and case, etc. Products with Functional Coating: pliers,
cutting tools (milling inserts, drills) and mold cavity
surfaces.
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Our PVD Coating Technology in
our China plant is characterized by the creation
of metal vapor reacted with different gases to
form a thin film coating, like TiCN, TiN, ZrN,
TiC, TiAlN, CrN, etc typically thickness ranges
from 2 to 5 microns.
Currently, PVD Coating Technology
has two main applications: Decorative and Functional
Coating for tooling. Especially for the function
coating, it has a very high hardness, low coefficient
of friction. It can also endure high temperature,
abrasion and corrosion resistant.
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