Claims
- 1. A wear resistant coated article comprising a densified monolithic or composite silicon nitride-based substrate body having an adherent refractory coating layer deposited thereon, the coating layer consisting essentially of aluminum nitride.
- 2. A wear resistant coated article according to claim 1 further comprising at least one outer adherent coating layer of a refractory material having a different chemical composition from that of the aluminum nitride coating layer, deposited on the aluminum nitride coating layer.
- 3. A wear resistant coated article according to claim 2 wherein the outer adherent refractory coating layer comprises titanium carbide, zirconium carbide, hafnium carbide, vanadium carbide, niobium carbide, tantalum carbide, chromium carbide, molybdenum carbide, or tungsten carbide.
- 4. A wear resistant coated article according to claim 2 wherein the outer adherent refractory coating layer comprises titanium nitride, zirconium nitride, hafnium nitride, vanadium nitride, niobium nitride, tantalum nitride, chromium nitride, molybdenum nitride, or tungsten nitride.
- 5. A wear resistant coated article according to claim 2 wherein the outer adherent refractory coating layer comprises titanium carbonitride, zirconium carbonitride, hafnium carbonitride, vanadium carbonitride, niobium carbonitride, tantalum carbonitride, chromium carbonitride, molybdenum carbonitride, or tungsten carbonitride.
- 6. A wear resistant coated article according to claim 2 wherein the outer adherent refractory coating layer comprises alumina or zirconia.
- 7. A wear resistant coated article according to claim 1 wherein the adherent aluminum nitride coating layer is of a thickness between about 0.1 microns and about 10 microns.
- 8. A wear resistant coated article according to claim 2 wherein the outer adherent coating layer is of a thickness between about 1.0 and about 10 microns.
Parent Case Info
This is a continuation of co-pending application Ser. No. 103,333 filed on Oct. 1, 1987 now abandoned.
US Referenced Citations (43)
Foreign Referenced Citations (1)
Number |
Date |
Country |
129775 |
Jul 1984 |
JPX |
Non-Patent Literature Citations (1)
Entry |
Schienle and Smyth, Report #ORNL/Sub/84-47992/1, published Mar. 1987, USDOE Oak Ridge National Laboratory. |
Continuations (1)
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Number |
Date |
Country |
Parent |
103333 |
Oct 1987 |
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