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A growth type polycrystalline diamond sintered component and its application

A polycrystalline diamond, growth-type technology, applied in the field of superhard materials, can solve the problem that the diamond layer cannot be sintered, and achieve the effects of uniform residual stress distribution, strong operability, and stable temperature field.

Inactive Publication Date: 2016-04-20
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] However, some domestic scientific research institutions have studied this kind of assembly, and the conclusion is that diamond powder can only be sintered locally, and the diamond layer far away from the metal layer cannot be sintered.

Method used

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  • A growth type polycrystalline diamond sintered component and its application
  • A growth type polycrystalline diamond sintered component and its application
  • A growth type polycrystalline diamond sintered component and its application

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Experimental program
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Embodiment Construction

[0032] Such as image 3 As shown, in this embodiment, the sintered component used includes a heating tube 31, a metal adhesive layer 32, a diamond layer 33, an insulating tube 34, and an infiltration cavity 35.

[0033] In an implementation of this embodiment, the heating tube 31 is cylindrical, and the cylindrical heating tube 31 is located at the outermost layer of the sintering assembly. The height of the heating tube is preferably selected to be 1.2 to 10 cm. The outer diameter and height of the heating tube depend on the high-pressure space provided by the high-pressure equipment. If the space is large, the heating tube can be enlarged accordingly. The wall thickness of the heating tube 31 is selected to be between 0.15-1 cm. The upper and lower ends of the heating tube can be respectively covered with a number of conductive heating sheets, the diameter of which is equal to the outer diameter of the heating tube.

[0034] The insulating tube 34 is located inside the heating ...

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Abstract

The invention provides a growth type polycrystalline diamond sintered assembly and an application thereof. The polycrystalline diamond sintered assembly comprises a heating pipe, an insulating pipe, a melt infiltration cavity, a metal binding agent and diamond powder, wherein the heating pipe is positioned on the outermost layer of the sintered assembly; the insulating pipe is positioned in the heating pipe and is clung to the heating pipe; a first hollow cavity is formed in the insulating pipe; the melt infiltration cavity is formed in the first hollow cavity, and a second hollow cavity is formed in the melt infiltration cavity; the second hollow cavity is filled with the metal binding agent and the diamond powder.

Description

Technical field [0001] The invention relates to the technical field of superhard materials, in particular to a sintered component for synthesizing polycrystalline diamond by a static high pressure method and its application. Background technique [0002] Due to the good thermal conductivity, high hardness and good wear resistance of the polycrystalline diamond layer, it is widely used in petroleum drilling, geological drilling and coal mining applications and in the field of high-performance electronic packaging functional materials. [0003] There are two main methods for the preparation of polycrystalline diamond. One is the vapor deposition method. The advantage of this method is that the thickness of the polycrystalline wafer can be accurately controlled and large-diameter samples can be made. The disadvantage is that it takes a long time, is thin and has low productivity; Another method of making polycrystalline diamond is to add a certain binder to diamond powder and then sin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J3/06
Inventor 胡强贾晓鹏马红安
Owner JILIN UNIV
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