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Spray deposition device of Ti3AlC2 metal ceramic and method for preparing Ti3AlC2 metal ceramic

A spray deposition and cermet technology, applied in the field of cermet, can solve the problems of complex process, high impurity content of cermet, waste of raw materials, etc., and achieve the effects of simple process, guaranteed density and improved production efficiency

Active Publication Date: 2019-01-04
XINYANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solved Ti 3 AlC 2 In the actual production process of cermets, there are problems of high impurity content, complicated process, incomplete reaction and waste of raw materials

Method used

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  • Spray deposition device of Ti3AlC2 metal ceramic and method for preparing Ti3AlC2 metal ceramic
  • Spray deposition device of Ti3AlC2 metal ceramic and method for preparing Ti3AlC2 metal ceramic
  • Spray deposition device of Ti3AlC2 metal ceramic and method for preparing Ti3AlC2 metal ceramic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Example 1 A kind of Ti 3 AlC 2 Spray Deposition Apparatus for Cermets

[0039] Such as Figure 1~4 shows that a Ti 3 AlC 2 A spray deposition device for cermets includes a carrying platform 1, a spray deposition chamber 2, an atomization structure 3, a crucible 4, a powder stirring tank 5 and a powder conveying mechanism 6, the carrying platform 1 is located at the lower part of the device, and the carrying platform It includes a support foot 11 , a first support column 12 and a working surface 13 , the support foot 11 is fixed on the ground, the lower part of the first support column 12 is connected to the support foot 11 , and the upper part is connected to the working surface 13 .

[0040] A spray deposition chamber 2 is arranged above the carrying platform 1, and a deposition mold 21 is arranged in the spray deposition chamber 2. The spray deposition chamber 2 is a U-shaped tank, and a cylindrical protective net 22 is arranged inside the spray deposition chamber...

Embodiment 2

[0046] Example 2 Ti 3 AlC 2 A method for preparing a cermet, comprising the steps of:

[0047] Step 1: Raw material preparation:

[0048] TiC powder, Ti powder and liquid aluminum are prepared in advance according to the molar ratio, TiC powder: Ti powder: liquid aluminum=2:1:1.2.

[0049] Step 2: Mixing and heating:

[0050] Put the TiC powder and Ti powder into the powder mixing tank body 52 through the powder feeding hopper 51 and mix and stir for 3 hours to obtain the mixed powder; heat the liquid aluminum in the crucible 4 at a heating temperature of 700°C, and heat Time 3h.

[0051] Step 3: Conveying the powder:

[0052] Open the blanking baffle 531 , the mixed powder is transported into the powder collection chamber 62 through the conveying mixing tank 61 , and then filtered through the screen 621 .

[0053] Step 4: Powder acceleration and liquid aluminum atomization:

[0054] The mixed powder is sprayed into the spray deposition chamber 2 through the negative pr...

Embodiment 3

[0059] Example 3 Ti 3 AlC 2 A method for preparing a cermet, comprising the steps of:

[0060] Step 1: Raw material preparation:

[0061] TiC powder, Ti powder and liquid aluminum are prepared in advance according to the molar ratio, TiC powder: Ti powder: liquid aluminum=2:1:1.2.

[0062] Step 2: Mixing and heating:

[0063] Put the TiC powder and Ti powder into the powder mixing tank body 52 through the powder feeding hopper 51 and mix and stir for 2 hours to obtain the mixed powder; heat the liquid aluminum in the crucible 4 at a heating temperature of 800°C, and heat Time 2h.

[0064] Step 3: Conveying the powder:

[0065] Open the blanking baffle 531 , the mixed powder is transported into the powder collection chamber 62 through the conveying mixing tank 61 , and then filtered through the screen 621 .

[0066] Step 4: Powder acceleration and liquid aluminum atomization:

[0067] The mixed powder is sprayed into the spray deposition chamber 2 through the negative pr...

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Abstract

The invention relates to a spray deposition device of Ti3AlC2 metal ceramic and a method for preparing the Ti3AlC2 metal ceramic. The device comprises a bearing platform, a spray deposition chamber, an atomization structure, a crucible, a powder stirring tank and a powder conveying mechanism, wherein a powder collection chamber is arranged on one side of the powder conveying mechanism; a negativepressure generator is arranged below the powder collection chamber; one end of the negative pressure generator is connected with a negative pressure gas pipe, and the bottom of the negative pressure generator is connected with a delivery pipe. The method for preparing the Ti3AlC2 metal ceramic by using the device comprises the following steps: raw material preparation, mixing and heating, powder conveying, powder acceleration and molten aluminum atomization, reaction deposition and blank taking. The device and the method solve the problem that the Ti3AlC2 metal ceramic is difficult in manufacturing, complex in technology, halfway in reaction and wasted in the raw materials in the actual production process.

Description

technical field [0001] The invention belongs to the technical field of cermets, in particular to a Ti 3 AlC 2 Spray deposition device for cermet and preparation of Ti 3 AlC 2 cermet method. Background technique [0002] Compared with traditional binary compounds, it has always been difficult to prepare high-purity and dense ternary compounds. The preparation of high-purity and dense Ti 3 SiC 2 with Ti 3 AlC 2 The main reason for the difficulty of materials is that in the Ti-Si-C and Ti-Al-C ternary phase diagrams, Ti 3 SiC 2 with Ti 3 AlC 2 The phase has only a relatively narrow stable zone, and the prepared samples are prone to contain TiC x and other impurity phases. Ti currently 3 SiC 2 with Ti 3 AlC 2 The main synthesis technologies are: spark plasma technology (SPS), hot isostatic pressing technology (HIP), self-propagating technology (SHS), hot pressing sintering technology (HP), etc. However, the reaction process and sintering temperature of self-prop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/10B22F9/08C22C1/05C22C29/10
CPCB22F9/082C22C1/051C22C29/10
Inventor 肖琪聃吴珊周峰金永报赵珍妮李蒙晓
Owner XINYANG NORMAL UNIVERSITY