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TiCN-based metal ceramic

A base metal and ceramic technology, applied in the field of TiCN base metal ceramics, to achieve the effect of improved toughness, long service life and excellent cutting effect

Pending Publication Date: 2019-07-05
XIAMEN TUNGSTEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] There is no report on improving the strength and toughness of TiCN-based cermets by measuring and optimizing the phase composition by X-ray diffraction (XRD).

Method used

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Examples

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Effect test

Embodiment 1

[0050] The TiCN-based cermets of Examples 1-6 and Comparative Examples 1-2 are composed of a hard phase and a binder phase, wherein the hard phase is composed of a first hard phase, a second hard phase and a third hard phase, Formulated in mass percent wt%. The average particle size of each component of the hard phase is 1 μm, and the average particle size of the binder phase is 1.5 μm. The composition ratio of each embodiment and comparative example is shown in Table 2.

[0051] Table 2 embodiment and comparative example composition ratio (wt %)

[0052]

[0053] Through calculation, it can be known that Example 1-6: the first hard phase accounts for more than 50wt% of the hard phase, the second hard phase accounts for 20.05wt%-40wt% of the hard phase, and the third hard phase accounts for the hard phase. The content of C in the hard phase is 3.41wt%-25wt%, the content of C in the hard phase is 7.8wt%-12.0wt%, and the content of N in the hard phase is 3.5wt%-8.7wt%.

[...

Embodiment 2

[0077] The TiCN-based cermets of Examples 7-9 and Comparative Example 3 are composed of a hard phase and a binder phase, wherein the hard phase is composed of a first hard phase, a second hard phase and a third hard phase. Percent wt % formulated. The average particle size of each component of the hard phase is 1.5 μm, and the average particle size of the binder phase is 1.5 μm. The composition ratio of each embodiment and comparative example is shown in Table 6.

[0078] Table 6 embodiment and comparative example composition ratio (wt %)

[0079]

[0080] Through calculation, it can be known that Example 7-9: the first hard phase accounts for more than 50wt% of the hard phase, the second hard phase accounts for 20.05wt%-40wt% of the hard phase, and the third hard phase accounts for more than 50wt% of the hard phase. The content of C in the hard phase is 3.41wt%-25wt%, the content of C in the hard phase is 7.8wt%-12.0wt%, and the content of N in the hard phase is 3.5wt%-8...

Embodiment 3

[0101] The TiCN-based cermets of Examples 10-12 and Comparative Example 4 are composed of a hard phase and a binder phase, wherein the hard phase is composed of a first hard phase, a second hard phase and a third hard phase. Percent wt % formulated. The average particle diameter of the first hard phase is 1.0 μm, the average particle diameter of the second and third hard phases is 1.5 μm, and the average particle diameter of the binder phase is 1.5 μm. The composition ratio of each embodiment and comparative example is shown in Table 10.

[0102] Table 10 embodiment and comparative example composition ratio (wt %)

[0103]

[0104] Through calculation, it can be known that Example 10-12: the first hard phase accounts for more than 50wt% of the hard phase, the second hard phase accounts for 20.05wt%-40wt% of the hard phase, and the third hard phase accounts for The content of C in the hard phase is 3.41wt%-25wt%, the content of C in the hard phase is 7.8wt%-12.0wt%, and th...

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Abstract

The invention provides a TiCN-based metal ceramic of a special structure. The TiCN-based metal ceramic comprises a hard phase and a binding phase; an original spectrogram is obtained by performing X-ray diffraction measurement on the TiCN-based metal ceramic, and comprises a diffraction peak A occurring when the Bragg angle 2theta is 47-49.7 degrees and a diffraction peak B occurring when the Bragg angle 2theta is 132.1 to 139.7 degrees; the peak edge width of the diffraction peak A is 0.92-1.48 degrees, and the peak edge width of the diffraction peak B is 0.84 to 2.0 degrees; the diffractionpeak A is subjected to peak shape fitting to obtain a peak separation map; in the peak separation map, the peak separation quantity of the diffraction peak A is 1-3; in the peak separation of the diffraction peak A, the peak area of the strongest peak is 80.3%-91.6% of the sum of the peak separation area of separated peaks of the diffraction peak A, and the microstructure is quantitatively controlled and optimized, so that the toughness of the TiCN-based metal ceramic is remarkably improved on the premise of ensuring the hardness, and the service life of the TiCN-based metal ceramic as a cutting tool is prolonged.

Description

technical field [0001] The invention belongs to cermet materials, in particular to a TiCN-based cermet. Background technique [0002] TiCN-based cermets have attracted widespread attention at home and abroad because of their advantages such as good red hardness, high wear resistance, small thermal expansion coefficient, excellent chemical stability, extremely low friction coefficient, abundant main raw material resources, and low cost. materials with great potential. Compared with WC-Co cemented carbide, TiCN-based cermet has higher high-temperature hardness, and compared with Al 2 o 3 And other ceramic cutting tool materials have better toughness, combining the advantages of both, the application prospect is huge. In recent years, with the development of high-performance cutting devices, higher requirements have been put forward for the materials of cutting tools. Although TiCN-based cermets can improve cutting performance for a short time by means of surface coating tre...

Claims

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Application Information

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IPC IPC(8): C22C29/04C22C1/05
CPCC22C1/051C22C29/005C22C29/04B23B27/14C22C1/05
Inventor 鲁攀许荣杰聂洪波项忠楠郭新营江嘉鹭
Owner XIAMEN TUNGSTEN
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