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Method for preparing titanium-boron laminar composite efficiently

A layered composite material, titanium boron technology, applied in metal material coating process, coating, solid diffusion coating and other directions, can solve the problem of low utilization rate of boronizing agent, save boronizing time and increase fracture toughness , the effect of promoting chemical reactions

Inactive Publication Date: 2019-08-09
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the traditional powder method of boronizing also has the disadvantage of low utilization rate of boronizing agent

Method used

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  • Method for preparing titanium-boron laminar composite efficiently
  • Method for preparing titanium-boron laminar composite efficiently
  • Method for preparing titanium-boron laminar composite efficiently

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1: The part to be infiltrated in this embodiment is a TA2 industrial pure titanium substrate;

[0037] A method for efficiently preparing a titanium-boron layered composite material, the specific steps are as follows:

[0038] (1) Install opposite parallel electrodes on the inner wall of the infiltration tank, and the parallel electrodes are externally connected to an AC power supply; the AC power supply is 0~220V;

[0039] (2) Add boronizing agent into the infiltration box, then place the pretreated pure titanium between the parallel electrodes in step (1) and parallel to the electrodes, then heat at a uniform speed to a temperature of 800°C, and then conduct constant temperature infiltration with alternating current. After boron treatment for 10 hours, take it out and cool it to room temperature, and boil it in hot water at 90°C for 3 minutes to remove the remaining boronizing agent and impurities on the surface to obtain a titanium-boron layered composite ...

Embodiment 2

[0043] Embodiment 2: the part to be infiltrated in this embodiment is a TB2 titanium alloy substrate;

[0044] A method for efficiently preparing a titanium-boron layered composite material, the specific steps are as follows:

[0045] (1) Install opposite parallel electrodes on the inner wall of the infiltration tank, and the parallel electrodes are externally connected to an AC power supply; the AC power supply is 0~220V;

[0046](2) Add boronizing agent into the infiltration box, and then place the pretreated titanium alloy between the parallel electrodes in step (1) and parallel to the electrodes, then heat at a uniform speed to a temperature of 750°C, and conduct constant temperature infiltration with alternating current. After boron treatment for 5 hours, take it out and cool it to room temperature, and then boil it in hot water at 100°C for 4 minutes to remove boronizing agent and impurities remaining on the surface to obtain a titanium-boron layered composite material; ...

Embodiment 3

[0050] Embodiment 3: The part to be infiltrated in this embodiment is a TC4 titanium alloy substrate;

[0051] A method for efficiently preparing a titanium-boron layered composite material, the specific steps are as follows:

[0052] (1) Install opposite parallel electrodes on the inner wall of the infiltration tank, and the parallel electrodes are externally connected to an AC power supply; the AC power supply is 0~220V;

[0053] (2) Add boronizing agent into the infiltration box, and then place the pretreated titanium alloy between the parallel electrodes in step (1) and parallel to the electrodes, then heat at a uniform speed to a temperature of 850°C, and conduct constant temperature infiltration with alternating current. After boron treatment for 15 hours, take it out and cool it to room temperature, and then boil it in hot water at a temperature of 95°C for 5 minutes to remove the remaining boronizing agent and impurities on the surface to obtain a titanium-boron layere...

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Abstract

The invention relates to a method for preparing a titanium-boron laminar composite efficiently, and belongs to the technical field of titanium-boron laminar composites. Opposite parallel electrodes are arranged on the inner wall of an infiltration box, the parallel electrodes are externally connected with an alternating current power supply, boriding agents are added into the infiltration box, pretreated titanium or titanium alloy is placed between the parallel electrodes, is parallel to the electrodes and then uniformly heated at a uniform speed until the temperature is 600-900 DEG C, alternating currents are fed for constant temperature boriding treatment for 5-20h, the titanium or titanium alloy is taken out and cooled to the room temperature and then put and boiled in hot water with the temperature of 90-100 DEG C for 3-5min to remove the boriding agents and impurities remaining on the surface, and the titanium-boron laminar composite is obtained. Compared with traditional powder method boriding, under the situation of adopting the same boriding agents, the time and temperature required to obtain the same boriding layer thickness are greatly reduced, the boriding rate is increased by 1-3 times, the energy consumption and the production cost can be reduced, and the utilization rate of the boriding agents can be effectively promoted.

Description

technical field [0001] The invention relates to a method for efficiently preparing a titanium-boron layered composite material, which belongs to the technical field of the titanium-boron layered composite material. Background technique [0002] Solid powder method boronizing (referred to as powder method boronizing) infiltrates boron into the surface layer of metal materials to form a boronizing layer with high hardness and wear resistance as well as certain high temperature oxidation resistance and corrosion resistance, which can improve many industries. The service life of metal parts used in friction, wear and high temperature oxidation environments is currently the most widely used boronizing method. [0003] The generation of active boron atoms in the current solid powder method boronizing is caused by the thermal decomposition and mutual reaction of the boronizing agent under the action of high temperature, and its concentration increases with the increase of boronizin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C8/68
CPCC23C8/68
Inventor 段永华李平
Owner KUNMING UNIV OF SCI & TECH
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