Method for preparing micro-nano titanium carbonitride powder with controllable carbon-nitrogen ratio by adopting solid state nitrogen source

A technology of titanium carbonitride and carbon-nitrogen ratio, which is applied in the field of ceramic material preparation, can solve the problems of difficult and accurate control of C/N, high reaction temperature, low production efficiency, etc., and achieves accurate and controllable carbon-nitrogen ratio and low preparation temperature. , the effect of low cost

Inactive Publication Date: 2013-02-06
SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
View PDF1 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The disadvantages of the prior art are that the reaction temperature is high and the time is long, so the production efficie

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0034] Example 1: Preparation of TiC 0.9 N 0.1 Ceramic powder

[0035] The raw materials are commercial titanium powder with a particle size of 200 mesh, carbon black and ammonium chloride, with a molar ratio of 1:0.9:0.1, a total of 30 grams of ingredients, and 30 grams of NaCl. After mixing, put them into the stainless steel ball mill tank of the ball mill. Use the steel tank. After the rubber ring is sealed, it is evacuated to 0.5Pa and filled with argon gas at a pressure of 0.9atm. Then vacuumize to 0.5Pa, and then fill with argon, the pressure is 0.9atm. Control the ball-to-material ratio to 10:1, and control the speed of the ball mill to 300 rpm. After 6 hours of ball milling, use the tablet press to produce a φ20mm green body under an axial pressure of 4 MPa, and place the green body into 900°C. In the molten NaCl, hold for 30 minutes. The salt block with Ti(C, N) ceramic powder cooled down after the reaction was put into water 10 times the weight of the salt block and s...

Example Embodiment

[0036] Example 2: Preparation of TiC 0.8 N 0.2 Ceramic powder

[0037] The raw materials are commercial titanium powder, carbon black, and ammonium chloride with a particle size of 200 mesh. The molar ratio is 1:0.8:0.2. The ingredients are 30 grams. Add 30 grams of NaCl. After mixing, put them into the stainless steel ball mill tank of the ball mill. Use the steel tank. After the rubber ring is sealed, it is evacuated to 1.0 Pa and filled with argon gas at a pressure of 1 atm. Then vacuumize to 1.0Pa, and then fill with argon, the pressure is 1atm. Control the ball-to-material ratio to 20:1, and control the speed of the ball mill to 200 rpm. After ball milling for 5 hours, use the tablet press to make a φ20mm green body under an axial pressure of 5MPa, and place the green body into 1000℃ In the molten NaCl, hold for 30 minutes. The salt block with Ti(C, N) ceramic powder cooled down after the reaction was put into water 10 times the weight of the salt block and soaked for 10 h...

Example Embodiment

[0038] Example 3: Preparation of TiC 0.7 N 0.3 Ceramic powder

[0039] The raw materials are commercial titanium powder with a particle size of 200 mesh, carbon black and ammonium chloride, with a molar ratio of 1:0.7:0.3, a total of 30 grams of ingredients, and 30 grams of NaCl. After mixing, put them into the stainless steel ball mill tank of the ball mill. Use the steel tank. After the rubber ring is sealed, it is evacuated to 1.0 Pa and filled with argon gas at a pressure of 1.1 atm. Vacuum again to 1.0Pa, and then fill with argon, the pressure is 1.1atm. Control the ball-to-material ratio to 20:1, control the speed of the ball mill to 150 rpm, after 8 hours of ball milling, use the tablet press to produce a φ20mm blank under an axial pressure of 4MPa, and put the blank into 800°C In the molten NaCl, hold for 30 minutes. The salt block with Ti(C, N) ceramic powder cooled down after the reaction was put into water 10 times the weight of the salt block and soaked for 10 hours...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention discloses a method for preparing micro-nano titanium carbonitride powder with controllable carbon-nitrogen ratio by adopting a solid state nitrogen source. The method comprises the steps of 1, preparing ammonium chloride, titanium powder and carbon black; 2, uniformly mixing the ammonium chloride, the titanium powder and the carbon black; 3, adding sodium chloride into the mixture; 4, grinding and uniformly mixing the mixed powder obtained in the step 3 to prepare a blank; 5, placing the blank into the fusing sodium chloride, performing temperature preservation and cooling to obtain sodium chloride salt blocks carrying the titanium carbonitride powder; and 6, performing desalting treatment on the sodium chloride salt blocks carrying the titanium carbonitride powder to prepare the titanium carbonitride powder with the size being 300-500nm. According to the invention, Ti(C, N) ceramic powder is prepared by taking the titanium powder and the carbon black as the raw materials and the ammonium chloride as solid state nitrogen source, the preparation process is simple, the cost is low, the preparation temperature is low, the energy consumption is small, and the carbon nitrogen ration is controllable.

Description

technical field [0001] The invention relates to the improvement of the preparation method of titanium carbonitride powder, in particular to a method for preparing micro-nano titanium carbonitride powder with a controllable carbon-nitrogen ratio by using a solid nitrogen source, and belongs to the technical field of ceramic material preparation. [0002] Background technique [0003] Ti(C, N) has a series of advantages such as high strength, high hardness, high temperature resistance, acid and alkali resistance, wear resistance, good electrical conductivity and thermal conductivity, and is widely used in the preparation of cermets, cutting tools, molds, and smelting metals. Lining materials for crucibles, electrodes for molten salt electrolysis of metals, and coating materials for electrical contacts and metal surfaces. Especially the superfine powder has great development value and application prospect as the reinforcing phase of composite materials. [0004] The main meth...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C04B35/58C04B35/626
Inventor 杨瑞嵩李明田刘春海崔学军金永中林修洲
Owner SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap