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M (AlTiNbN/AlTiON) + AlTiCON multilayer composite coating for cutting and preparation method of m (AlTiNbN/AlTiON) + AlTiCON multilayer composite coating

A multi-layer composite, al1-a-btianbbn technology, applied in the direction of coating, metal material coating process, superimposed layer plating, etc., can solve the incompatibility of wear resistance and toughness, insufficient high temperature stability, etc. problem, to achieve the effect of good competence and adaptability

Pending Publication Date: 2022-07-01
ZHUZHOU HUARUI PRECISION CUTTINGS TOOLS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above-mentioned deficiencies currently existing, the present invention provides a m(AlTiNbN / AlTiON)+AlTiCON multilayer composite coating for cutting and its preparation method, which overcomes the incompatibility of wear resistance and toughness of traditional hard coatings, and the high temperature stability Insufficient shortcomings, to prepare cutting tool coatings with good wear resistance, good oxidation resistance, and excellent high-temperature mechanical properties

Method used

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  • M (AlTiNbN/AlTiON) + AlTiCON multilayer composite coating for cutting and preparation method of m (AlTiNbN/AlTiON) + AlTiCON multilayer composite coating
  • M (AlTiNbN/AlTiON) + AlTiCON multilayer composite coating for cutting and preparation method of m (AlTiNbN/AlTiON) + AlTiCON multilayer composite coating
  • M (AlTiNbN/AlTiON) + AlTiCON multilayer composite coating for cutting and preparation method of m (AlTiNbN/AlTiON) + AlTiCON multilayer composite coating

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preparation example Construction

[0030] The present invention also provides a method for preparing the above-mentioned m(AlTiNbN / AlTiON)+AlTiCON multi-layer composite coating for cutting, comprising the following steps:

[0031] Use powder metallurgy to prepare cemented carbide or cermet tool substrate, and carry out deep processing (grinding, sandblasting, polishing) on ​​the tool substrate to obtain the deep processing tool substrate;

[0032] Pretreatment (including cleaning and drying, argon ion bombardment etching and activation treatment) to the deep-processed tool substrate to obtain the pretreated tool substrate;

[0033] Alternate deposition of Al on the pretreated tool substrate by cathodic arc ion plating in physical vapor deposition 1-a-b Ti a Nb b N coating and Al 1-c-d Ti c O d N coating, then keep the total working pressure constant, gradually reduce the gas flow ratio and continue to deposit Al 1-x-y Ti x C y O z～0 N 1-z～1 coating.

[0034] Preferably, the substrate bias of the anio...

Embodiment 1

[0036] such as figure 1 The shown multi-layer composite structure coating tool of the present invention is composed of tool substrate, 100 (AlTiNbN / AlTiON), and AlTiCON coatings from inside to outside, and the total thickness of the coating is 3.28 μm;

[0037] Among them, the thickness of 100 (AlTiNbN / AlTiON) coating is 2.12 μm, and the thickness of AlTiCON coating is 1.16 μm;

[0038] The 100 (AlTiNbN / AlTiON) composite coating includes AlTiNbN layers and AlTiON layers alternately deposited periodically from the inside to the outside, including 100 periods, the thickness of the AlTiNbN single layer is 0.012μm, and the thickness of the AlTiON single layer is 0.01μm;

[0039] The AlTiCON coating is an AlTiCON layer with a single-layer gradient structure with a reduced O / N stoichiometric ratio.

[0040] The AlTiNbN layer in the above-mentioned multilayer composite structure coating is composed of Al in atomic ratio. 0.6 Ti 0.35 Nb 0.05 N, AlTiON layer is composed of Al in at...

Embodiment 2

[0050] A multi-layer composite structure coating tool of the present invention as in Example 1, which is composed of a tool matrix, 50 (AlTiNbN / AlTiON), and AlTiCON coatings from the inside to the outside, and the total thickness of the coating is 3.16 μm;

[0051] Among them, the thickness of 50 (AlTiNbN / AlTiON) coating is 2.08 μm, and the thickness of AlTiCON coating is 1.08 μm;

[0052]The 50 (AlTiNbN / AlTiON) composite coating includes AlTiNbN layers and AlTiON layers alternately deposited periodically from the inside to the outside, including 50 periods, the thickness of the AlTiNbN single layer is 0.021μm, and the thickness of the AlTiON single layer is 0.019μm;

[0053] The AlTiCON coating is an AlTiCON layer with a single-layer gradient structure with a reduced O / N stoichiometric ratio.

[0054] The AlTiNbN layer in the above-mentioned multilayer composite structure coating is composed of Al in atomic ratio. 0.6 Ti 0.35 Nb 0.05 N, AlTiON layer is composed of Al in at...

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Abstract

The invention discloses an m (AlTiNbN / AlTiON) + AlTiCON multilayer composite coating for cutting and a preparation method thereof, the multilayer composite coating is deposited on a cutter base body, the cutter base body is a hard alloy or metal ceramic prepared by a powder metallurgy method, the composite coating comprises an m (Al < 1-a-b > Ti NbbN / Al < 1-c-d > TicOdN) coating on the bottom layer and an Al < 1-x-y > Ti < x > CyO < z-0 > N < 1-z-1 > coating located on the m (Al < 1-a-b > Ti NbbN / Al < 1-c-d > TicOdN) coating; wherein the m (Al < 1-a-b > Ti Nb N / Al < 1-c-d > TicOdN) coating is formed by alternately depositing an Al < 1-a-b > Ti Nb N coating and an Al < 1-c-d > TicOdN coating in a multi-cycle manner, and m is the number of cycles; the Al < 1-x-y > Ti < x > CyO < z-0 > N < 1-z-1 > is a gradient layer of which the O / N stoichiometric ratio gradient is reduced. The coating has the advantages that the coating is tough, wear-resistant and high-temperature-resistant, the cutting performance is excellent in the actual service process, the process of the preparation method of the coating is relatively simple, the actual production is easy to operate, the production cost is low, and the like.

Description

technical field [0001] The invention relates to the technical field of cutting tool coatings, in particular to an m(AlTiNbN / AlTiON)+AlTiCON multi-layer composite coating for cutting and a preparation method thereof. Background technique [0002] In coating applications, simple single-layer binary and ternary coatings have been difficult to meet the stringent requirements of modern high-speed machining and the increasing number of difficult-to-machine materials on tool performance. A large number of literature reports that coated tools are faced with the actual service process. Repeated cutting resistance and alternating cutting heat make the cutting performance of the coated tool not only depend on the hardness of the coating, but also closely related to the toughness of the coating; Accumulation and transfer, the test of mechanical properties of coating materials at high temperature has become higher, that is, coating materials with better high temperature stability are req...

Claims

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Application Information

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IPC IPC(8): C23C14/32C23C14/06C23C28/00C23C28/04
CPCC23C14/325C23C14/0676C23C14/0641C23C28/40C23C28/044
Inventor 张华栋林孝良高江雄俞洋
Owner ZHUZHOU HUARUI PRECISION CUTTINGS TOOLS CO LTD
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