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Titanium carbonitride based metal ceramic based on high-entropy alloy binder phase and preparation method of metal ceramic

A high-entropy alloy, titanium carbonitride technology, applied in the field of titanium carbonitride-based cermet materials based on high-entropy alloy binder phase and its preparation, to improve the comprehensive mechanical properties, achieve the matching of hardness and toughness, The effect of easy raw materials

Inactive Publication Date: 2012-11-21
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the existing Ti(C,N)-based cermet materials, the binder phase is mainly cobalt or nickel, or a very small amount of rare earth, Mo and other elements are added, which cannot change the limitation of a single main element

Method used

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  • Titanium carbonitride based metal ceramic based on high-entropy alloy binder phase and preparation method of metal ceramic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The raw materials used in this embodiment and the processing steps are as follows:

[0034] Weigh 97gTi(C 0.5 , N 0.5 ) powder and 3g high-entropy alloy binder phase raw material powder, wherein the high-entropy alloy binder phase raw material powder component and proportioning are iron, cobalt, nickel, samarium metal elemental powder, according to the molar ratio of iron, cobalt, nickel, samarium element 1:1:1:1 formulation. Then put the above powders into the ball mill jar together, put the balls into the ball according to the ratio of ball to material of 8:1, and pour 100ml of alcohol, and ball mill for 24 hours to get the mixed powder, after drying, add rubber in the proportion of 1wt% to form Agent, sieved, granulated. Then the mixed raw materials are weighed to a certain weight and loaded into the mold cavity for compression molding. Then put the prepared sample into a low-pressure sintering furnace for sintering. The sintering system is: vacuumize to 1×10 -1...

Embodiment 2

[0036] The raw materials used in this embodiment and the processing steps are as follows:

[0037] Weigh 66gTi(C 0.7 , N 0.3 ) powder, 10gWC powder, 5gTaC powder, 4gMo 2 C powder, 15g high-entropy alloy binder phase raw material powder, wherein the high-entropy alloy binder phase raw material is nickel-aluminum alloy powder, iron-chromium alloy powder, cobalt powder, and according to the molar ratio of iron, cobalt, nickel, chromium, and aluminum elements 1 :1:1:1:1 formulation. Then put the above powders into the ball mill jar together, put the balls into the balls according to the ball-to-material ratio of 8:1, pour 150ml of acetone, and ball mill for 24 hours to get the mixed powder, dry it and add rubber in the proportion of 1wt% to form Agent, sieved, granulated. Then the mixed raw materials are weighed to a certain weight and loaded into the mold cavity for compression molding. Then put the prepared sample into a low-pressure sintering furnace for sintering. The sin...

Embodiment 3

[0039] The raw materials used in this embodiment and the processing steps are as follows:

[0040] Weigh 59g Ti(C 0.3 , N 0.7 ) powder, 30g (Ti, 15W, 5Mo, 0.2V) (C 0.5 , N 0.5 ) solid solution powder, 2gWC powder, 0.2gVC powder, 0.8gCr 3 C 2 powder and 8g of high-entropy alloy binder phase raw material powder, wherein the high-entropy alloy binder phase raw material is metal elemental powder of iron, cobalt, nickel, chromium, dysprosium, and europium, according to the elements of iron, cobalt, nickel, chromium, dysprosium, and europium The molar ratio is 1:1:1:1:0.5:0.5. Then put them into the ball mill jar together, put the balls into the balls according to the ratio of ball to material of 8:1, and pour 150ml of alcohol into the ball mill for 24 hours to get the mixed powder, after drying it, add the rubber molding agent according to the ratio of 1wt%, Sieve, granulate. Then the mixed raw materials are weighed to a certain weight and loaded into the mold cavity for com...

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Abstract

Disclosed is a titanium carbonitride based metal ceramic material based on a high-entropy alloy binder phase. The binder phase of the titanium carbonitride based metal ceramic material is high-entropy alloy, the hard phase of the titanium carbonitride based metal ceramic material is carbonitride solid solution, the high-entropy alloy binder phase includes at least four of ferrum, cobalt, nickel, chromium, aluminum, vanadium, titanium, copper, zirconium, molybdenum, manganese and rare earth elements, and the molar content ratio of each element ranges from 5% to 35%. In a preparation method, the titanium carbonitride based metal ceramic material based on the high-entropy alloy binder phase comprises raw materials including, in weight percent, 3-30% of the high-entropy alloy binder phase, 0-30% of second carbide powder and the balance carbonitride solid solution powder, the carbonitride solid solution powder includes at least one of Ti (Cx, N1-x), (Ti, M1...) and (Cx, N1-x), the M1 component of the (Ti, M1...) and (Cx, N1-x) includes at least one of W, Mo, Ta, Nb, V, Cr, Zr, Hf, Y and lanthanide, and 0<x<1 in the Ti (Cx, N1-x), (Ti, M1...) and (Cx, N1-x). The preparation method includes the process steps of (1) ball-milling mixing, (2) forming and (3) low-pressure sintering.

Description

technical field [0001] The invention belongs to the field of titanium carbonitride-based cermet materials, and relates to a titanium carbonitride-based cermet material based on a high-entropy alloy binder phase and a preparation method thereof. Background technique [0002] Titanium carbonitride-based cermet, because of its low density (1 / 3 of WC), high hardness, good wear resistance and heat resistance, good chemical stability, high anti-bonding, anti-diffusion , anti-oxidation performance and other characteristics, has been widely used in the modern manufacturing industry to prepare cutting tools and various wear-resistant products, which can solve the problem of exhaustion of tungsten resources. It is the most successful substitute for WC series cemented carbide, especially very suitable for high-speed cutting And finishing field, the application prospect is very broad. However, the lack of strength and toughness is a key problem in the practical engineering application ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C29/04C22C1/05
Inventor 刘颖叶金文张豪
Owner SICHUAN UNIV
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