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A multi-element alloy catalyst for synthesizing diamond and its preparation method and application

A technology for synthesizing diamonds and multi-element alloys, applied in diamonds, chemical instruments and methods, and ultra-high pressure processes, etc., can solve the problems of low proportion of high-strength materials, low particle size concentration ratio, low impact toughness, etc., and achieve high bar production , excellent quality and low production cost

Active Publication Date: 2018-11-09
SINOMA SYNTHETIC CRYSTALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This restricts the improvement of diamond grades, mainly in the low proportion of high-strength materials, low per unit yield, low particle size concentration, low impact toughness, and high magnetic properties.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] This embodiment provides an iron-nickel-tungsten-titanium-carbon multi-element alloy catalyst, the alloy composition of which is: nickel 26%, tungsten 1%, titanium 0.6%, carbon 0.7‰, and the balance is iron.

[0033] The present embodiment also provides the preparation method of the multi-element alloy catalyst, which is specifically: using a 160KW, 4000Hz intermediate frequency smelting furnace for smelting, and continuously filling nitrogen at the furnace mouth during the smelting process; firstly, after melting the nickel plate, adding titanium plate and graphite, Form a nickel-titanium-carbon alloy; then add tungsten powder and iron rods in sequence, and keep the temperature of the alloy liquid at 1570°C when all of them are melted into an alloy, and keep warm for 5 minutes to make the alloy composition uniform; use high-pressure water atomization to atomize the alloy liquid into powder The granules are vacuum-dried at an atomization pressure of 35MPa, and passed thr...

Embodiment 2

[0036] This embodiment provides an iron-nickel-tungsten-titanium-carbon multi-element alloy catalyst, the alloy composition of which is: nickel 27%, tungsten 1.2%, titanium 0.7%, carbon 0.8‰, and the balance is iron.

[0037]The present embodiment also provides the preparation method of the multi-element alloy catalyst, which is specifically: using a 160KW, 4000Hz intermediate frequency smelting furnace for smelting, and continuously filling nitrogen at the furnace mouth during the smelting process; firstly, after melting the nickel plate, adding titanium plate and graphite, Form a nickel-titanium-carbon alloy; then add tungsten powder and iron rod in turn, and keep the temperature of the alloy liquid at 1580°C when all of them are melted into an alloy, and keep warm for 5 minutes to make the alloy composition uniform; use high-pressure water atomization to atomize the alloy liquid into powder The granules are vacuum-dried at an atomization pressure of 36MPa, and passed through...

Embodiment 3

[0040] This embodiment provides an iron-nickel-tungsten-titanium-carbon multi-element alloy catalyst, the alloy composition of which is: 26% nickel, 1.5% tungsten, 1% titanium, 0.8‰ carbon, and the balance is iron.

[0041] The present embodiment also provides the preparation method of the multi-element alloy catalyst, which is specifically: using a 160KW, 4000Hz intermediate frequency smelting furnace for smelting, and continuously filling nitrogen at the furnace mouth during the smelting process; firstly, after melting the nickel plate, adding titanium plate and graphite, Form a nickel-titanium-carbon alloy; then add tungsten powder and iron rod in turn, and keep the temperature of the alloy liquid at 1600°C when all of them are melted into an alloy, and keep warm for 5 minutes to make the alloy composition uniform; use high-pressure water atomization to atomize the alloy liquid into powder The granules are vacuum-dried at an atomization pressure of 34MPa, and passed through ...

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PUM

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Abstract

The invention relates to a multicomponent alloy catalytic agent used for compounding diamond. The alloy comprises the following components: 25-30% of nickel, 0.5-2% of tungsten, 0.5-1.5% of titanium, 0.5-2% of carbon and the balance of iron. The invention further relates to a preparation method for the multicomponent alloy catalytic agent and an application thereof to the compounding of diamond. The multicomponent alloy catalytic agent provided by the invention takes iron, nickel, tungsten, titanium and carbon as raw materials at specific ratio, and the excellent properties of uniform component and low impurity content, such as, oxygen, silicon, sulfur, phosphorus, and the like of the multicomponent alloy catalytic agent can be ensured. The multicomponent alloy catalytic agent is prepared by preferably adopting a water atomization method and has the performances of low manufacturing cost, high yield, and the like. The multicomponent alloy catalytic agent provided by the invention can be used for preparing high-class artificial diamond with high yield, strong cold / heat impact toughness and low magnetic susceptibility.

Description

technical field [0001] The invention relates to the field of diamond synthesis, in particular to a catalyst material for synthesizing high-grade diamond. Background technique [0002] Synthetic diamond has extremely high hardness and good thermal, optical, and electrical properties, and plays a great role in the fields of stone, construction, engineering ceramics, automobiles, aviation, and aerospace. After more than 50 years of development in my country, synthetic diamond has formed a complete and huge emerging industrial system. Catalyst is a substance that realizes the mass production of synthetic diamonds by greatly reducing the temperature and pressure required for synthetic diamonds during the synthesis of synthetic diamonds. The catalyst material of synthetic synthetic diamond directly determines the grade of synthetic synthetic diamond, and is the core raw material of synthetic synthetic diamond. [0003] Ni 70 mn 25 co 5 (70, 25, and 5 are the mass percentages ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/888C01B32/26B01J3/06
CPCB01J3/06B01J21/063B01J23/888
Inventor 李辉高莹周连科顾毅赵全马春生蒋鑫王增辉
Owner SINOMA SYNTHETIC CRYSTALS CO LTD
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