Unlock instant, AI-driven research and patent intelligence for your innovation.

High-temperature-resistance Ti (C, N)-TiB2-HEAs composite metal ceramic material and preparation method thereof

A technology of composite metal and ceramic materials, applied in the field of cermet materials, can solve the problems of insufficient high-temperature performance, chipping, and easy peeling of titanium carbonitride-based cermets, and achieve high density, uniform distribution, and low raw material cost Effect

Inactive Publication Date: 2019-03-22
FUJIAN UNIV OF TECH
View PDF3 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high-temperature performance of titanium carbonitride-based cermets is insufficient, and it is prone to peeling or even chipping in the high-temperature environment during service

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-temperature-resistance Ti (C, N)-TiB2-HEAs composite metal ceramic material and preparation method thereof
  • High-temperature-resistance Ti (C, N)-TiB2-HEAs composite metal ceramic material and preparation method thereof
  • High-temperature-resistance Ti (C, N)-TiB2-HEAs composite metal ceramic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The prepared material composition is: FeCoCrNiAl high-entropy alloy powder: 6wt.% (purity 99%, particle size ≤ 1.5 μm), Ti(C,N) powder 70.5wt.% (purity 99%, particle size 2 Powder 23.5wt.% (purity 99%, particle size <1.5 μm).

[0024] The specific preparation process is as follows: the raw material powder is wet mixed ball milled in an omnidirectional planetary ball mill for 15 hours, the speed of the ball mill is 150 r / min, the mixing medium is 8 mm and 4 mm diameter stainless steel balls, and the ball-to-material ratio is 15:1. Then put it into a vacuum drying oven to dry. After the powder is dried and taken out, it is placed in a cylindrical graphite mold with a diameter of 30 mm, and then placed in a vacuum hot-pressing sintering furnace with a vacuum degree of 1×10 -2 Pa~1×10 -3 Pa, pre-press first, the pressure is 7MPa. Then carry out pressure sintering (from room temperature to 800°C, the heating rate is 10°C / min; above 800°C, the heating rate is 7°C / min), heat...

Embodiment 2

[0026] The prepared material composition is: FeCoCrNiAl high-entropy alloy powder: 10wt.% (purity 99%, particle size ≤ 1.5 μm), Ti(C,N) powder: 67.5wt.% (purity 99%, particle size 2 Powder: 22.5wt.% (99% purity, particle size <1.5 μm).

[0027] The specific preparation process is as follows: the raw material powder is wet mixed ball milled in an omnidirectional planetary ball mill for 15 hours, the speed of the ball mill is 150 r / min, the mixing medium is 8 mm and 4 mm diameter stainless steel balls, and the ball-to-material ratio is 15:1. Then put it into a vacuum drying oven to dry. After the powder is dried and taken out, it is placed in a cylindrical graphite mold with a diameter of 30 mm, and then placed in a vacuum hot-pressing sintering furnace with a vacuum degree of 1×10 -2 Pa~1×10 -3 Pa, pre-press first, the pressure is 7MPa. Then carry out pressure sintering (from room temperature to 800°C, the heating rate is 10°C / min; above 800°C, the heating rate is 7°C / min), h...

Embodiment 3

[0029] The prepared material composition is: FeCoCrNiAl high-entropy alloy powder: 14wt.% (purity 99%, particle size ≤ 1.5 μm), Ti(C,N) powder: 64.5wt.% (purity 99%, particle size 2Powder: 21.5wt.% (99% purity, particle size <1.5 μm).

[0030] The specific preparation process is as follows: the raw material powder is wet mixed ball milled in an omnidirectional planetary ball mill for 15 hours, the speed of the ball mill is 150 r / min, the mixing medium is 8 mm and 4 mm diameter stainless steel balls, and the ball-to-material ratio is 15:1. Then put it into a vacuum drying oven to dry. After the powder is dried and taken out, it is placed in a cylindrical graphite mold with a diameter of 30 mm, and then placed in a vacuum hot-pressing sintering furnace with a vacuum degree of 1×10 -2 Pa~1×10 -3 Pa, pre-press first, the pressure is 7MPa. Then carry out pressure sintering (from room temperature to 800°C, the heating rate is 10°C / min; above 800°C, the heating rate is 7°C / min), he...

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

No PUM Login to View More

Abstract

The invention discloses a high-temperature-resistance Ti (C, N)-TiB2-HEAs (high-entropy alloy) composite metal ceramic material and a preparation method thereof. The high-temperature-resistance Ti (C,N)-TiB2-HEAs composite metal ceramic material is prepared by vacuum hot-press sintering with a FeCoCrNiAl high-entropy alloy as a bonding agent and with Ti (C, N) and TiB2 as hard phases. The main components of the material comprise the following materials: 8-14 wt.% of FeCoCrNiAl high-entropy alloy (99% of purity, particle size not more than 1.5 microns), 61.5-70.5 wt.% of Ti (C, N) powder (99%of purity, particle size less than 1.5 microns), and 20.5-23.5 wt.% of TiB2 powder (99% of purity, particle size less than 1.5 microns). High-entropy alloy powder is prepared through mechanical alloying; then, Ti (C, N) and TiB2 are charged for argon shielded wet mixing ball milling by 15 hours; and after vacuum drying, mixed powder is obtained. Through prepressing of 7 MPa, a blank is formed by vacuum hot-press sintering or discharge plasma sintering, and the composite metal ceramic material is finally obtained. Compared with a traditional metal ceramic material, the composite metal ceramic material prepared by using the method is more excellent in rupture roughness and wear resistance and obviously better in heat stability, heat conductivity, oxidation resistance and high-temperature performance.

Description

technical field [0001] The invention relates to the field of cermet materials, in particular to a high temperature resistant Ti(C,N)-TiB 2 -HEAs composite cermet material and preparation method thereof. Background technique: [0002] As high-speed cutting tool molds and various wear-resistant materials, titanium carbonitride-based cermets have been a research hotspot in the material field in recent years. Due to its rich main raw materials, low manufacturing cost, and excellent red hardness, thermochemical properties, and wear resistance, it shows good application prospects in the fields of high-speed finishing and semi-finishing of hardened steel, martensitic stainless steel and other materials. The application of WC series cemented carbide in cutting tools has been partially replaced by titanium carbonitride-based cermets, which not only solves the shortage of tungsten resources, but also makes up for the processing shortcomings of cemented carbide tools, showing better p...

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): C22C29/04C22C1/05
CPCB22F2998/10C22C1/05C22C29/005C22C29/04B22F2009/043B22F3/14
Inventor 戴品强李战江刘晓强洪春福常发田君王卫国
Owner FUJIAN UNIV OF TECH