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TiB2 whisker high-temperature strengthening and toughening Ti (C, N)-based metal ceramic material preparation method

A ceramic material, strengthening and toughening technology, applied in the field of cermet tool materials and its preparation, can solve the problems of high-temperature strength and hardness of the tool, SiC whiskers and TiC whiskers are easy to oxidize at high temperatures, etc., to achieve high-temperature strength and Excellent toughness, industrial application, and good comprehensive performance

Inactive Publication Date: 2019-03-08
JIANGSU MARITIME INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the high-temperature cutting process, SiC whiskers and TiC whiskers are easy to be oxidized at high temperature, which leads to a decrease in the high-temperature strength and hardness of the tool.

Method used

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  • TiB2 whisker high-temperature strengthening and toughening Ti (C, N)-based metal ceramic material preparation method
  • TiB2 whisker high-temperature strengthening and toughening Ti (C, N)-based metal ceramic material preparation method
  • TiB2 whisker high-temperature strengthening and toughening Ti (C, N)-based metal ceramic material preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Embodiment 1: a kind of TiB 2 A method for preparing a whisker high-temperature toughened Ti(C,N)-based cermet material, comprising the following steps:

[0032] Step 1: Carry out the proportioning of reaction raw materials; Take respectively Ti (C, N): 50g, TiB 2 Whisker: 25g, WC: 5g, Mo 2 C: 3g, TaC: 4g, NbC: 4g, Co: 4g, Ni: 5g.

[0033] Step 2: Add 15g of paraffin wax and 5g of sulfuric acid to the powder selected in step 1, then mix it evenly on the mixer, and granulate it with a granulator. The granulated powder is dried on the dryer to become the final powder. TiB above 2 Whiskers select high-strength TiB 2 Whiskers, the diameter of whiskers is between 300 and 1000nm, and the aspect ratio is between 1:10 and 1:30.

[0034] Step 3: Select a suitable resin abrasive according to the shape of the selected tool, then pour the material and vacuum seal it. Finally, it is put into hydraulic oil for cold isostatic pressing, and the forming pressure is 200MPa. The f...

Embodiment 2

[0037] Embodiment 2: a kind of TiB 2 A method for preparing a whisker high-temperature toughened Ti(C,N)-based cermet material, comprising the following steps:

[0038] Step 1: Carry out the ratio of reaction raw materials; get Ti(C,N):60g, TiB respectively 2 Whisker: 20g, WC: 3g, Mo 2 C: 3g, TaC: 3g, NbC: 3g, Co: 4g, Ni: 4g.

[0039] Step 2: Add paraffin wax: 17g and sulfuric acid: 3g to the powder selected in step 1, then mix it evenly on the mixer, and granulate it with a granulator. The granulated powder is dried on the dryer to become the final powder. TiB above 2 Whiskers select high-strength TiB 2 Whiskers, the diameter of whiskers is between 300 and 1000nm, and the aspect ratio is between 1:10 and 1:30.

[0040] Step 3: Select a suitable resin abrasive according to the shape of the selected tool, then pour the material and vacuum seal it. Finally, it is put into hydraulic oil for cold isostatic pressing, and the forming pressure is 250MPa. The formed green body...

Embodiment 3

[0043] Embodiment 3: a kind of TiB 2 A method for preparing a whisker high-temperature toughened Ti(C,N)-based cermet material, comprising the following steps:

[0044] Step 1: Carry out the proportioning of reaction raw materials; Get respectively Ti (C, N): 55g, TiB 2 Whisker: 15g, WC: 5g, Mo 2 C: 5g, TaC: 5g, NbC: 5g, Co: 5g, Ni: 5g.

[0045] Step 2: Add paraffin wax: 10g, sulfuric acid: 10g to the powder selected in step 1, and then mix it evenly on the mixer, and then granulate it with a granulator. The granulated powder is dried on the dryer to become the final powder. TiB above 2 Whiskers select high-strength TiB 2 Whiskers, the diameter of whiskers is between 300 and 1000nm, and the aspect ratio is between 1:10 and 1:30.

[0046] Step 3: Select a suitable resin abrasive according to the shape of the selected tool, then pour the material and vacuum seal it. Finally, it is put into hydraulic oil for cold isostatic pressing, and the forming pressure is 150MPa. The...

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Abstract

The invention concretely relates to a TiB2 whisker high-temperature strengthening and toughening Ti (C, N)-based metal ceramic material preparation method which comprises the following steps of compounding reaction raw materials, wherein the reaction raw materials are prepared from the components in percentage: 50 to 65 percent of Ti (C, N), 15 to 30 percent of TiB2 whisker, 2 to 10 percent of WC,2 to 8 percent of Mo2C, 2 to 8 percent of TaC, 2 to 8 percent of NbC, 3 to 5 percent of Co, and 3 to 5 percent of Ni; and after compounding, compositely mixing the raw materials, pelletizing, drying,carrying out cold isostatic pressing molding, carrying out sectional type atmosphere hot pressing, rapidly cooling for reducing temperature, and sintering to obtain a TiB2 whisker high-temperature strengthening and toughening Ti (C, N)-based metal ceramic material. The Ti (C, N)-based composite metal ceramic prepared through the invention has a favorable combination property, and particularly hashigh high-temperature hardness and toughness during high-speed cutting, so that the TiB2 whisker high-temperature strengthening and toughening Ti (C, N)-based metal ceramic material is good for prolonging the service life of a cutter and can be used as a cutting tool material for high-speed cutting (semi) finish machining.

Description

technical field [0001] The present invention relates to a kind of cermet cutting tool material and its preparation method, more specifically, relates to a kind of TiB with high temperature environment for high-speed cutting 2 A method for preparing a whisker high-temperature toughened Ti(C,N)-based cermet material. Background technique [0002] Cutting is the most widely used and basic processing method in the machinery manufacturing industry. As the development direction of cutting processing, high-speed cutting technology has the advantages of improving production efficiency and reducing production costs, and cutting tools are the key to efficient cutting technology. At present, Ti(C,N)-based cermet tools are the most widely used in the field of high-speed cutting tools. [0003] Compared with the traditional WC cemented carbide, Ti(C,N)-based cermet has excellent comprehensive properties. When its hardness is the same as that of cemented carbide, its density is only half...

Claims

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Application Information

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IPC IPC(8): C22C29/04C22C1/05C22C1/10
CPCC22C1/051C22C29/005C22C29/04
Inventor 赵先锐刘桂香朱征宇陈勇张强勇谢荣方一航李勤涛张梦贤李战江
Owner JIANGSU MARITIME INST
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