Titanium carbide based metal ceramic thermal spray powder and preparation method

A technology for thermal spraying powder and ceramic powder, applied in metal processing equipment, metal material coating process, coating and other directions, can solve the problems of uneven metal coating, poor composition uniformity, low powder density, etc., and achieve sphericity. High, high powder density, good composition uniformity

Inactive Publication Date: 2020-07-28
CHENGDU MET CERAMIC ADVANCED MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to provide a titanium carbide-based cermet thermal spray powder and its preparation method, to solve the problems of poor composition uniformity, low powder density, uneven metal coating and problems of titanium carbide-based cermet powder prepared in the prior art. Technical problems of poor sphericity

Method used

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  • Titanium carbide based metal ceramic thermal spray powder and preparation method
  • Titanium carbide based metal ceramic thermal spray powder and preparation method
  • Titanium carbide based metal ceramic thermal spray powder and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Include the following steps:

[0067] (1) Wet grinding (ball-to-material ratio: 5:1):

[0068] ① Put TiC, TiN, WC, Mo 2 C, Co and Ni are added in the ball mill tank according to the proportion, then add adhesive and wet milling medium, and ball mill at a speed of 60r / min for 48h to obtain a uniformly mixed slurry;

[0069] Among them, the adhesive is paraffin, and the amount of the adhesive is TiC, TiN, WC, Mo 2 4% of the total weight of C, Co and Ni; the wet grinding medium adopts absolute ethanol, and its addition is to be able to immerse all the main material powders and grinding balls; the material of the grinding balls is cemented carbide;

[0070] ②Dry the slurry obtained in step ① in a vacuum oven with a vacuum degree of 70Pa and a drying temperature of 80°C for 4 hours to obtain a dry and uniform mixed powder;

[0071] (2) Differential sieve granulation:

[0072] ①Put the mixed powder obtained in step (1) into a constant temperature stirring machine dish, ke...

Embodiment 2

[0089] Include the following steps:

[0090] (1) Wet grinding (ball-to-material ratio: 4.5:1):

[0091] ① Put TiC, TiN, WC, Mo 2 C, Co and Ni are added in the ball mill tank according to the proportion, then add adhesive and wet milling medium, and ball mill at a speed of 60r / min for 48h to obtain a uniformly mixed slurry;

[0092] Among them, the adhesive is paraffin or polyethylene glycol, and the amount of the adhesive is TiC, TiN, WC, Mo 2 4% of the total weight of C, Co and Ni; the wet grinding medium adopts absolute ethanol, and its addition is to be able to immerse all the main material powders and grinding balls; the material of the grinding balls is cemented carbide;

[0093] ②Dry the slurry obtained in step ① in a vacuum oven with a vacuum degree of 70Pa and a drying temperature of 80°C for 4 hours to obtain a dry and uniform mixed powder;

[0094] (2) Differential sieve granulation:

[0095] ①Put the mixed powder obtained in step (1) into a constant temperature ...

Embodiment 3

[0110] Include the following steps:

[0111] (1) Wet grinding (ball-to-material ratio: 4.5:1):

[0112] ① Put TiC, TiN, WC, Mo 2 C, Co and Ni are added in the ball mill tank according to the proportion, then add adhesive and wet milling medium, and ball mill at a speed of 60r / min for 48h to obtain a uniformly mixed slurry;

[0113] Among them, the adhesive is paraffin or polyethylene glycol, and the amount of the adhesive is TiC, TiN, WC, Mo 2 4% of the total weight of C, Co and Ni; the wet grinding medium adopts absolute ethanol, and its addition is to be able to immerse all the main material powders and grinding balls; the material of the grinding balls is cemented carbide;

[0114] ②Dry the slurry obtained in step ① in a vacuum oven with a vacuum degree of 70Pa and a drying temperature of 80°C for 4 hours to obtain a dry and uniform mixed powder;

[0115] (2) Differential sieve granulation:

[0116] ①Put the mixed powder obtained in step (1) into a constant temperature ...

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Abstract

The invention provides titanium carbide based metal ceramic thermal spray powder and a preparation method. In the prior art, the technical problems that prepared titanium carbide based metal ceramic powder is poor in component uniformity, low in powder density, uneven in metal coating and poor in degree of sphericity are solved. Preparation of the thermal spray powder comprises the following mainmaterials of, by weight percent, 20-40% of TiC, 20-30% of TiN, 10-20% of WC, 2-6% of Mo2C, 10-30% of Co and 10-30% of Ni, and the sum of weight percentages of the main materials is 100%. The titaniumcarbide based metal ceramic thermal spray powder prepared through the invention is good in component uniformity, high in powder density, uniform in metal coating, high in degree of sphericity and goodin liquidity, and mass continuous production can be achieved through a low-speed sintering method.

Description

technical field [0001] The invention relates to a thermal spraying powder, in particular to a titanium carbide-based cermet thermal spraying powder. Background technique [0002] For thermal spray powder, there are many kinds of manufacturing processes, and the selection of manufacturing process will directly affect the performance of thermal spray powder. At present, the methods commonly used for the preparation of ceramic powder include smelting crushing, sintering crushing, spray drying, and self-propagating high temperature. Synthetic sol-gel method, gas phase method, etc. [0003] Powder preparation by spray drying is currently the most commonly used powder preparation method. By using a binder, small particles of any material can be bonded together to form large spherical agglomerated particles. It has a large tolerance for powder types, but spray drying is not a It is an inexpensive method for preparing powders. At the same time, using this process to densify composi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C30/00C22C1/05C22C1/10B22F1/00B22F3/10B22F9/04C23C24/10
CPCC22C30/00C22C29/02C22C29/005C22C1/051B22F3/1021B22F9/04C23C24/103B22F3/1007B22F2009/043B22F1/065B22F1/142
Inventor 黄建华颜焰
Owner CHENGDU MET CERAMIC ADVANCED MATERIALS
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