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Al2O3-Ti(C,N)-cBN ceramic tool material and preparation method thereof

A technology of al2o3-ti and ceramic cutting tools, which is applied in the field of materials, can solve problems such as harsh reaction conditions, unsatisfactory performance, and complicated operation, and achieve the effects of enhanced interface bonding strength, low preparation cost, and high mechanical properties

Active Publication Date: 2015-04-08
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The above methods all have problems such as high raw material cost, harsh reaction condition

Method used

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  • Al2O3-Ti(C,N)-cBN ceramic tool material and preparation method thereof
  • Al2O3-Ti(C,N)-cBN ceramic tool material and preparation method thereof
  • Al2O3-Ti(C,N)-cBN ceramic tool material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Prepare Al 2 o 3 powder, Ti(C,N) powder as the main raw material; Al 2 o 3 The particle size of the powder is 0.08~0.2μm, accounting for 65% of the total volume of all main raw materials; the particle size of Ti(C,N) powder is 0.08~0.1μm, accounting for 35% of the total volume of all main raw materials;

[0042] Ti(C,N) in Ti(C,N) powder 1-X N X ) weight content ≥ 99.9%, where x = 0.3; cBN powder cubic phase BN ≥ 99%;

[0043] Prepare cBN powder as an auxiliary raw material, the particle size of cBN powder is 0.5~1μm, accounting for 5% of the total volume of all main raw materials;

[0044] Prepare Ti powder as an additive, with a particle size of ≤3 μm, and the additive accounts for 1% of the total volume of all main raw materials;

[0045] Dissolve the dispersant ammonium polyacrylate in water to make a primary dispersant solution, the weight concentration of ammonium polyacrylate is 0.6%; put the prepared main raw material and primary dispersant solution in a b...

Embodiment 2

[0049] Method is with embodiment 1, and difference is:

[0050] Prepare Al 2 o 3 powder, Ti(C,N) powder as the main raw material; Al 2 o 3 Powder accounts for 70% of the total volume of all main raw materials; Ti(C,N) powder accounts for 30% of the total volume of all main raw materials; Ti(C,N) powder in Ti(C,N) 1-X N X ) x = 0.5;

[0051] The particle size of the auxiliary raw material cBN powder is 2~3μm, accounting for 0.5% of the total volume of the main raw material;

[0052] Prepare Al powder as an additive, and the additive accounts for 0.5% of the total volume of all main raw materials;

[0053] The weight concentration of ammonium polyacrylate in the primary dispersant solution is 0.8%; the prepared main raw material and the primary dispersant solution are placed in a ball mill for ball milling and mixing for 16 hours, and then dried at 90°C for 40 hours to obtain Al 2 o 3 -Ti(C,N) mixed powder; the volume ratio of the primary dispersant to the main raw mater...

Embodiment 3

[0057] Method is with embodiment 1, and difference is:

[0058] Prepare Al 2 o 3 powder, Ti(C,N) powder as the main raw material; Al 2 o 3 Powder accounts for 85% of the total volume of all main raw materials; Ti(C,N) powder accounts for 15% of the total volume of all main raw materials; Ti(C,N) powder in Ti(C,N) 1-X N X ) x = 0.7;

[0059] The particle size of the auxiliary raw material cBN powder is 3~5μm, accounting for 5% of the total volume of all main raw materials;

[0060] Prepare Ti powder and Ni powder to be mixed by equal mass as an additive, and the additive accounts for 3% of the total volume of all main raw materials;

[0061] The weight concentration of ammonium polyacrylate in the primary dispersant solution is 1.0%; the prepared main raw material and the primary dispersant solution are placed in a ball mill for ball milling and mixing for 20 hours, and then dried at 100°C for 36 hours to obtain Al 2 o 3 -Ti(C,N) mixed powder; the volume ratio of the pr...

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Abstract

The invention discloses an Al2O3-Ti(C,N)-cBN ceramic tool material and a preparation method thereof, belonging to the technical field of materials. The ceramic tool material comprises main ingredients, auxiliary ingredients and additive ingredients, wherein the volume contents of Al2O3 and Ti(C,N) in the main ingredients are respectively 65-85% and 15-35%; the volume content of the auxiliary ingredients is 0.5-5% of that of the main ingredients; the content volume of the additive ingredients is 0.5-5% of that of the main ingredients. The preparation method comprises the following steps: (1) preparing main ingredients; (2) preparing auxiliary ingredients; (3) preparing additives; (4) ball-milling, mixing and drying the prepared main ingredients and a primary dispersing agent solution; (5) placing the main ingredients and the additives into a secondary dispersing agent solution, and performing ultrasonic dispersing treatment; and (6) ball-milling and mixing, then drying for at least 24h, then hot-pressing at the temperature of 1350-1450DEG C under the pressure of 30-45MPa. The ceramic material obtained by utilizing the method has high mechanical performance, can be used for processing intractable materials and the preparation cost is lower.

Description

technical field [0001] The invention belongs to the technical field of materials, in particular to an Al 2 o 3 -Ti(C,N)-cBN ceramic cutting tool material and its preparation method. Background technique [0002] With the development of modern machinery industry, high-strength steel, quenched steel, nickel-based alloy, cobalt-based alloy, titanium alloy and other metals and composite materials are used more and more widely. These materials generally have at least one of the following characteristics: high hardness, High strength, high plasticity and high toughness, low plasticity and high brittleness, low thermal conductivity, microscopic hard spots or hard inclusions, active chemical properties; these characteristics increase the cutting force and cutting temperature during cutting , the durability of the tool is reduced; sometimes the quality of the machined surface will be deteriorated, and the chip is difficult to control; finally, the processing efficiency and processi...

Claims

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Application Information

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IPC IPC(8): C04B35/10C04B35/622
Inventor 孙旭东修稚萌张梦雯李晓东张牧韩成玮李继光霍地朱琦刘绍宏
Owner NORTHEASTERN UNIV
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