Method of manufacturing surface coated carbo-nitride titanium-base cermet materials for inserts of high-speed cutting tools
First Claim
1. A method of manufacturing a surface-coated TiCN-base cermet material for inserts of cutting tools, comprising the steps of:
- (a) preparing a substrate of a TiCN-base cermet; and
(b) coating over surfaces of said substrate a hard surface layer formed on one of a single layer of one compound selected from the group consisting of TiC, TiN, and TiCN, and a composite layer of at least two compounds selected from the same group, by means of an ion plating method under the following conditions;
Reaction Temperature;
700°
to 1000°
C.;
Voltage Appplied On Substrate;
negative voltage of 100 to 1000 volts; and
Pressure of Reaction Atmosphere;
1×
10-5 to 1.5×
10-4 torr, whereby said hard surface layer has a mean thickness of from 0.5 to 10 microns and a mean grain size of not more than 0.05 microns.
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Accused Products
Abstract
A method of manufacturing a surface-coated TiCN-base cermet material for inserts of cutting tools. A substrate of a TiCN-base cermet is prepared. Then, a hard surface layer is coated over surfaces of the substrate, the layer being formed of one of a single layer of one compound selected from the group consisting of TiC, TiN, and TiCN, and a composite layer of at least two compounds selected from the same group. In coating the hard surface layer, an ion plating method is applied under the conditions that the reaction temperature is 700°-1000° C., the voltage applied on the substrate (-)100-(-)1000 volts, and the pressure of the reaction atmosphere 1×10-5 -2×10-4 torr. The hard surface layer thus obtained has a mean thickness within a range from 0.5 to 10 microns and a mean grain size of not more than 0.05 microns.
32 Citations
9 Claims
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1. A method of manufacturing a surface-coated TiCN-base cermet material for inserts of cutting tools, comprising the steps of:
-
(a) preparing a substrate of a TiCN-base cermet; and (b) coating over surfaces of said substrate a hard surface layer formed on one of a single layer of one compound selected from the group consisting of TiC, TiN, and TiCN, and a composite layer of at least two compounds selected from the same group, by means of an ion plating method under the following conditions; Reaction Temperature;
700°
to 1000°
C.;Voltage Appplied On Substrate;
negative voltage of 100 to 1000 volts; andPressure of Reaction Atmosphere;
1×
10-5 to 1.5×
10-4 torr, whereby said hard surface layer has a mean thickness of from 0.5 to 10 microns and a mean grain size of not more than 0.05 microns. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification
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- Resources
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Current AssigneeMitsubishi Materials Corporation
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Original AssigneeMitsubishi Kinzoku Kabushiki
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InventorsYoshimura, Hironori
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Primary Examiner(s)Weisstuch, Aaron
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Application NumberUS07/266,487Time in Patent Office475 DaysField of Search204/192.31, 427/38-39, 428/698US Class Current427/530CPC Class CodesC23C 14/0635 CarbidesC23C 14/0641 Nitrides C23C14/0617 takes ...C23C 14/0664 CarbonitridesC23C 30/005 on hard metal substrates
