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Weak core ring structured novel cermet material based on (Ti, M) (C, N) solid solution powder

A cermet, solid solution technology, applied in the field of titanium carbonitride cermet and powder metallurgy

Active Publication Date: 2010-08-04
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately, the HV hardness of this high-toughness Ti(C,N)-based cermet is only 11-12 GPa, which is much lower than the 14-17 GPa hardness level of commercial Ti(C,N)-based cermets.

Method used

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  • Weak core ring structured novel cermet material based on (Ti, M) (C, N) solid solution powder
  • Weak core ring structured novel cermet material based on (Ti, M) (C, N) solid solution powder
  • Weak core ring structured novel cermet material based on (Ti, M) (C, N) solid solution powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Ingredients and ingredients

[0031] Ultrafine (Ti, W15, Mo5, V0.2) (C 0.6 , N 0.4 ) Solid solution powder 65g, Ni powder 8g, Co powder 7g, WC powder 15g, Mo 2 C powder 5g.

[0032] The above powder components were weighed using an electronic balance.

[0033] (2) Ball mill compound

[0034] The raw material powder prepared according to step (1) is put into a polyurethane ball milling tank with YG8 alloy balls with a diameter of ￠10mm and absolute ethanol as ball milling media, and then ball milled on a roller ball mill for 72 hours, with a ball-to-material ratio of 8:1, and ball milling Speed ​​30 rpm / min. After the wet abrasive is taken out, it is dried in a vacuum drying oven at 80°C, and then a polyethylene glycol alcohol solution is added to carry out rubber mixing and granulation.

[0035] (3) Press

[0036] The granules mixed with glue in step (2) are put into a mold for compression molding, and the compression pressure is 150 MPa.

[0037] (4) Degumm...

Embodiment 2

[0040] (1) Ingredients and ingredients

[0041] Ultrafine (Ti, W15, Mo5, V0.2) (C 0.6 , N0 4 ) Solid solution powder 65g, Ni powder 11g, Co powder 9g, WC powder 5g, Mo 2 C powder 10g.

[0042] The above powder components were weighed using an electronic balance.

[0043] (2) Ball mill compound

[0044] The raw material powder prepared according to step (1) is put into a polyurethane ball milling tank with YG8 alloy balls with a diameter of ￠10mm and absolute ethanol as ball milling media, and then ball milled on a roller ball mill for 72 hours, with a ball-to-material ratio of 8:1, and ball milling Speed ​​30 rpm / min. After the wet abrasive is taken out, it is dried in a vacuum drying oven at 80°C, and then a polyethylene glycol alcohol solution is added to carry out rubber mixing and granulation.

[0045] (3) Press

[0046] The granules mixed with glue in step (2) are put into a mold for compression molding, and the compression pressure is 120 MPa.

[0047] (4) Degumm...

Embodiment 3

[0050] (1) Ingredients and ingredients

[0051] Ultrafine (Ti, W15, Mo5, V0.2) (C 0.5 , N 0.5 ) Solid solution powder 75g, Ni powder 6g, Co powder 4g, TaC powder 5g, Mo 2 C powder 10g.

[0052] The above powder components were weighed using an electronic balance.

[0053] (2) Ball mill compound

[0054] The raw material powder prepared according to step (1) is put into a polyurethane ball milling tank with YG8 alloy balls with a diameter of ￠10mm and absolute ethanol as ball milling media, and then ball milled on a roller ball mill for 72 hours, with a ball-to-material ratio of 8:1, and ball milling Speed ​​30 rpm / min. After the wet abrasive is taken out, it is dried in a vacuum drying oven at 80°C, and then a polyethylene glycol alcohol solution is added to carry out rubber mixing and granulation.

[0055] (3) Press

[0056] The pellets mixed with glue in step (2) are put into a mold for compression molding, and the compression pressure is 180 MPa.

[0057] (4) Degumm...

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PUM

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Abstract

A weak core ring structured novel cermet material based on (Ti, M) (C, N) solid solution powder comprises the following raw materials in percentage by weight: 10-20% of Co or / and Ni powder, 10-35% of type II carbide powder and the balance (Ti, M) (C, N) solid solution powder, wherein M in the (Ti, M) (C, N) solid solution powder is at least one of W, Mo, V, Cr, Ta and Nb; and the type II carbide is at least one of WC, VxC (x is more than 0 and not more than 1), Mo2C, Cr3C2, TaC and NbC. The novel cermet material is prepared by powder metallurgy.

Description

technical field [0001] The invention belongs to the technical field of titanium carbonitride cermet and powder metallurgy. Background technique [0002] Ti(C,N)-based cermet is the main reason why major industrial countries in the world attach importance to Ti(C,N)-based cermet technology because of its good red hardness, crater wear resistance and low manufacturing cost. Although the wettability between the hard phase and the binder phase can be significantly improved and its strength can be improved to a certain extent by adding the second type of carbides such as WC, Mo2C, etc. But with the high toughness of traditional WC-Co cemented carbide (about 9-16MPa m 1 / 2 ), commercial Ti(C,N)-based cermets are still slightly inferior (about 6-9MPa m 1 / 2 ), it is still unable to replace WC-Co cemented carbide tools. How to improve the toughness of Ti(C,N)-based cermets has become one of the focuses of material workers all over the world. [0003] When using Ti(C,N) or TiC+TiN ...

Claims

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Application Information

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IPC IPC(8): C22C29/04
Inventor 刘颖金永中叶金文姜中涛
Owner SICHUAN UNIV
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