초록 ▼

A coated cemented carbide product comprising a cemented carbide substrate and a dense chemical vapor deposited coating having a microstructure of at least two simultaneously co-deposited phases which form a composite layer. The microstructure of the composite layer has one phase dispersed either as

A coated cemented carbide product comprising a cemented carbide substrate and a dense chemical vapor deposited coating having a microstructure of at least two simultaneously co-deposited phases which form a composite layer. The microstructure of the composite layer has one phase dispersed either as discrete particulates or as oriented fibrous, rod-like or columnar particulates in the other phase.

대표청구항 ▼

A surface-coated article for cutting and wear applications comprising: (a) a substrate selected from the group consisting of cemented carbide, hard metals and high-temperature ceramics, and (b) a first chemical vapor deposition coating on said substrate comprised of a composite layer of at least two

A surface-coated article for cutting and wear applications comprising: (a) a substrate selected from the group consisting of cemented carbide, hard metals and high-temperature ceramics, and (b) a first chemical vapor deposition coating on said substrate comprised of a composite layer of at least two simultaneously co-deposited phases, a first of said phases being selected from the group consisting of: a carbide, carbonitride, nitride, oxycarbide, oxycarbonitride, silicide or boride of titanium, zirconium, hafnium, vanadium, niobium and tantalum; a carbide, silicide or boride of chromium, molybdenum and tungsten; and a carbide or nitride of silicon and boron; and a second of said phases being selected from the group consisting of an oxide or oxynitride of aluminum, titanium, zirconium, hafnium, magnesium, silicon and calcium, or stabilized zirconium oxide; said co-deposited phases comprising at least one phase present in fiber, rod-like or columnar form oriented with longitudinally axes in a direction normal to the substrate/coating interface in said composite layer.