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Metal ceramic produced through (Ti, Cr, Nb)(Cx,N1-x) solid solution and preparation method thereof

A cermet and solid solution technology, applied in the direction of mechanical equipment, engine seals, engine components, etc., can solve the problems of low density, tungsten resource consumption, low manufacturing cost, etc., and achieve low quality, long service life and low manufacturing cost. Effect

Inactive Publication Date: 2019-04-19
ZIGONG ZHAOQIANG SEALING PROD IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of (Ti, Cr, Nb) (C x ,N 1-x ) cermet produced by solid solution and preparation method thereof, the cermet solves the problem of excessive consumption of tungsten resources faced by existing WC-Co, WC-Ni series hard alloys, can replace WC series hard alloys, and its density is small, High bending strength, high hardness, good chemical stability, low manufacturing cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] One with (Ti,Cr,Nb)(C x ,N 1-x ) solid solution production of cermets, the cermets contain the following mass percentage components: 55.7% (Ti, Cr, Nb) (C x ,N 1-x ) (purchased from Panzhihua Delian Micro-Nano Technology Co., Ltd.), 7% Co, 14% Ni, 10% Mo 2 C, 13%WC, 0.3%C, its preparation method is as follows:

[0046] (1) Mixing: Weigh the raw materials according to the proportion, add absolute ethanol, and ball mill for 72 hours to obtain the mixed slurry, which is then precipitated and separated;

[0047] (2) Granulation: Put the separated slurry in a vacuum drying oven to dry at 90-110°C. After drying, pass through a 40-60 mesh sieve, add SBP forming agent, and sieve to granulate;

[0048] (3) Compression molding: the material obtained by granulation is pressed into a blank under a pressure of 180Mpa to 230Mpa;

[0049] (4) Degreasing: Carry out vacuum degreasing to the blank, the vacuum degreasing conditions are: room temperature rises to 300°C, heat preservat...

Embodiment 2

[0053] One with (Ti,Cr,Nb)(C x ,N 1-x ) solid solution production of cermets, the cermets contain the following mass percentage components: 52.9% (Ti, Cr, Nb) (C x ,N 1-x ) (purchased from Panzhihua Delian Micro-nano Technology Co., Ltd.), 10% Co, 10% Ni, 12% Mo 2 C, 15% WC, 0.1% C, its preparation method is basically the same as that of Example 1, the difference is that it uses SBS as a molding agent, and the vacuum degreasing conditions are: room temperature rises to 300 ° C, heat preservation for 1 hour, 300 ° C rises Heat up to 450°C, keep warm for 2.5 hours, rise from 450°C to 550°C, keep warm for 1.5 hours.

[0054] The density of the prepared cermet is 7.22g / cm 3 , bending strength 1942MPa, hardness HRA89.7.

Embodiment 3

[0056] One with (Ti,Cr,Nb)(C x ,N 1-x ) solid solution production of cermets, the cermets contain the following mass percentage components: 63.8% (Ti, Cr, Nb) (C x ,N 1-x ) (purchased from Panzhihua Delian Micro-Nano Technology Co., Ltd.), 6% Co, 10% Ni, 8% Mo 2 C, 12%WC, 0.2%C, its preparation method is basically the same as Example 1.

[0057] The density of the prepared cermet is 6.79g / cm 3 , the bending strength is 1817MPa, and the hardness is HRA91.1.

[0058] In summary, the present invention uses (Ti, Cr, Nb) (C x ,N 1-x ) The cermet produced by solid solution can replace WC series cemented carbide, which has low density, high bending strength, high hardness, good chemical stability and low manufacturing cost.

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Abstract

The invention discloses metal ceramic produced through (Ti, Cr, Nb)(Cx,N1-x) solid solution and a preparation method thereof. The metal ceramic comprises the following components including, by mass percent, 52.9%-63.8% of (Ti, Cr, Nb)(Cx,N1-x), 6%-10% of Co, 10%-14% of Ni, 8%-12% of Mo2C, 12%-15% of WC, and 0.1%-0.3% of C, wherein x is larger than 0.45 and smaller than 0.55. The metal ceramic canreplace WC series hard alloys, is small in density, large in bending strength, high in hardness, good in chemical stability and low in manufacturing cost, and is an ideal material used for preparing sealing products like a sealing ring.

Description

technical field [0001] The invention relates to a cermet material, in particular to a (Ti, Cr, Nb) (C x ,N 1-x ) cermet produced by solid solution and its preparation method and application. Background technique [0002] Ti(C,N) is based on TiC and TiN, and belongs to the NaCl structure of the face-centered cubic lattice. Ti(C,N)-based cermets are made of high-quality Ti(C,N) powder, Co powder, Ni powder and Mo 2 The second type of carbide such as C is a new type of hard material prepared by powder metallurgy as the main raw material. Compared with the traditional WC-Co series of sealing materials, the amount of products with the same size made of Ti(C,N)-based cermets is about 1 / 3 of the former, which has a cost advantage. Moreover, compared with WC-Co-based cemented carbide, Ti(C,N)-based cermet has high melting point, high-temperature red hardness, high thermal stability and chemical stability, and has lower hardness than WC-Co-based cemented carbide. coefficient of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/02B22F3/10C22C1/05C22C29/02C22C29/16C22C1/10F16J15/00
CPCB22F3/02B22F3/1007B22F3/1021C22C1/051C22C29/005C22C29/02C22C29/16F16J15/00
Inventor 徐德尤颜招强
Owner ZIGONG ZHAOQIANG SEALING PROD IND