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Spherical TiC powder and preparation method thereof

A spherical and powder technology, which is applied in the field of spherical TiC powder and its preparation, can solve the problems of oxide instability, alloy structure instability and compactness, etc., and achieve good fluidity, good industrialization prospects, and high compactness.

Inactive Publication Date: 2018-11-30
GUANGDONG ZHENGDE MATERIAL SURFACE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the inherent characteristics of TiC powder, it is widely used in ceramic alloys, and the reaction between titanium and oxygen can generate oxides in various valence states, and most oxides are unstable, so too high oxygen content in titanium carbide can easily lead to alloy structure Instability and poor compactness

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  • Spherical TiC powder and preparation method thereof
  • Spherical TiC powder and preparation method thereof
  • Spherical TiC powder and preparation method thereof

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Effect test

Embodiment 1

[0031] The preparation method of the micron spherical titanium carbide powder adopts the original titanium carbide powder with irregular shape as the raw material, and the powder specification is 15-53 μm. (1) In the sieving system, the raw TiC powder is sieved. The sieving equipment model used is Artech, and the particle size of the sieved powder is 15-45 μm. (2) In the plasma spheroidization system, the original powder is spheroidized; the model of the radio frequency plasma spheroidization equipment used is TekSphero-40KW SY165. The spheroidization parameters are set as follows: powder feeder probe model is SI792, powder feeding gap is 1mm, probe height is -10mm, powder feeder speed is 2r / min, argon sheath flow rate is 50splm, hydrogen sheath flow rate is 6splm, argon central The air flow rate is 20splm, and the powder feeding gas flow rate is 3splm. (3) In the cleaning equipment, the powder after spheroidization is cleaned and classified; the cleaning process of the spher...

Embodiment 2

[0033] The preparation method of micron-sized spherical titanium carbide powder, the raw material adopts irregularly shaped original titanium carbide powder, and the powder specification is 15-53 μm. (1) In the screening system, the original powder TiC powder is screened; the screening equipment used The model is Artech, and the particle size of the sieved powder is 15-45 μm. (2) In the plasma spheroidization system, the original powder is spheroidized; the model of the radio frequency plasma spheroidization equipment used is TekSphero-40KW SY165. The spheroidization parameters are set as follows: powder feeder probe model is SI792, powder feeding gap is 1mm, probe height is -10mm, powder feeder speed is 2r / min, argon sheath flow rate is 50splm, hydrogen sheath flow rate is 9splm, argon central The air flow rate is 20splm, and the powder feeding gas flow rate is 3splm. (3) In the cleaning equipment, the powder after spheroidization is cleaned and classified; the cleaning proc...

Embodiment 3

[0035]The preparation method of the micron spherical titanium carbide powder adopts the original titanium carbide powder with irregular shape as the raw material, and the powder specification is 15-53 μm. (1) In the screening system, the original TiC powder is screened; the type of screening equipment used is Artech, and the particle size of the screened powder is 15-45 μm. (2) In the plasma spheroidization system, the original powder is spheroidized; the model of the radio frequency plasma spheroidization equipment used is TekSphero-40KW SY165. Spheroidization parameters are set as follows: powder feeder probe model is SI792, powder feeding gap is 1mm, probe height is -10mm, powder feeder speed is 2r / min, argon sheath flow rate is 50splm, hydrogen sheath flow rate is 12splm, argon central The air flow rate is 20splm, and the powder feeding gas flow rate is 3splm. (3) In the cleaning equipment, the powder after spheroidization is cleaned and classified; the cleaning process o...

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Abstract

The present invention discloses a preparation method of spherical TiC powder. The preparation method is characterized in that a used raw material is irregular-shaped TiC powder. The preparation technology of the spherical TiC powder is a radio frequency plasma spheroidization method. The preparation processes comprise the following steps: (1) sieving; (2) spheroidizing; (3) cleaning; and (4) drying. A radio frequency plasma spheroidization system used in the radio frequency plasma spheroidization method has a model number of TekSphero-40 KW SY165. The used original irregular-shaped TiC powderis treated by a plasma spheroidization device to obtain spherical TiC powder with a high spheroidization rate (>90%), high sphericity, a high bulk density and a low oxygen content; and with tungsten carbide, tantalum carbide, niobium carbide, chromium carbide and titanium nitride, the spherical TiC powder can form binary, ternary and quaternary compound solid solutions which can be applied to spraying materials, welding materials, hard thin film materials, military aviation materials, hard alloys and metal ceramics.

Description

technical field [0001] The invention relates to the technical field of metal powder preparation, in particular to a spherical TiC powder and a preparation method thereof. Background technique [0002] Materials, information, energy, and biology are rapidly developing and revolutionary industries in the 21st century. Materials with various characteristics have been widely used in daily life and high-tech industries. key. TiC powder is widely used in the fields of ceramics, cutting tools, wear-resistant refractory materials, aviation and metallurgy due to its high temperature resistance, wear resistance, corrosion resistance, high strength, high hardness, thermal conductivity and other properties. At present, exploring a high-efficiency and energy-saving method to prepare TiC powder with high purity, uniform particle size distribution, small particle agglomeration, and close to stoichiometry is the focus of the majority of material researchers at home and abroad. [0003] Wi...

Claims

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Application Information

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IPC IPC(8): C01B32/921B01J19/00B01J19/08B01J19/06
CPCB01J19/0006B01J19/0053B01J19/06B01J19/088B01J2219/0894C01B32/921C01P2004/32
Inventor 曾德长肖猛邱金勇邱兆国邹永鸣张友生
Owner GUANGDONG ZHENGDE MATERIAL SURFACE TECH
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