Ti(C, N)-based cermet and preparation method thereof

A base metal and ceramic technology, applied in the field of Ti-based cermet and its preparation, can solve the problems of cracks and peeling off of the surface hardened layer, and achieve the improvement of interface bonding ability, wettability and migration. Barrier reduction effect

Active Publication Date: 2018-04-06
株洲科而诺新材料有限公司
View PDF4 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is one of the commonly used methods to generate wear-resistant coatings on the surface of substrate materials by means of physical coating or chemical coating, but there are obvious interfaces between the surface of materials prepared by such methods and the substrate in terms of composition and microstructure. There are also differences in thermal expansion coefficients, so the surface hardened layer is prone to cracks and even falls off

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
  • Ti(C, N)-based cermet and preparation method thereof
  • Ti(C, N)-based cermet and preparation method thereof
  • Ti(C, N)-based cermet and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0039] On the basis of the above, this embodiment further provides a preparation method for preparing the above-mentioned Ti(C,N)-based cermet, which includes the following steps:

[0040] Step 1, preparing master alloy powder;

[0041] Step 2, Ti (C, N) powder, TiC powder, WC powder, TaNbC powder, Mo2C powder, Cr3C2 powder, Co powder, Ni powder, and the intermediate alloy powder that step 1 makes are batched by weight percentage;

[0042] Step 3, adding a molding agent to the raw materials obtained in step 2, mixing them uniformly by ball milling, and spray drying to granulate;

[0043] Step 4, molding the mixture obtained in Step 3 to obtain a Ti(C,N)-based cermet compact;

[0044] Step 5. Sintering the Ti(C,N)-based cermet compact obtained in Step 4 in an atmosphere to obtain a Ti(C,N)-based cermet.

[0045] In step 1, when preparing the master alloy powder, Co, Rh, and Os are used as raw materials, and the weight percentage is 10-30% Rh, 5-15% Os, and the balance is Co f...

Embodiment 1

[0057] This embodiment provides a Ti(C, N) based cermet, which uses Ti(C, N), TiC, WC, TaNbC, Mo2C and Cr3C2 as hard phases, Co and Ni as binder phases, Co -Rh-Os master alloy is an additive; the composition of Ti(C, N)-based cermet material is counted as weight percent: Ti(C, N) is 53%, TiC is 3%, WC is 13%, TaNbC is 8%, Mo2C is 6.5%, Cr3C2 is 0.5%, Co is 7%, Ni is 6%, and Co-Rh-Os master alloy is 3%. The components of the master alloy are calculated by weight percentage: the Rh is 25%, Os is 15%, and Co is the balance.

[0058] The preparation method of the Ti(C, N)-based cermet described in this embodiment mainly includes the following steps:

[0059] Step 1, prepare master alloy powder, use Co, Rh, Os as raw materials, carry out batching according to the above-mentioned weight percentage, adopt melting method to prepare Co-Rh-Os master alloy melt, melt described Co-Rh-Os master alloy The body is made of Co-Rh-Os master alloy powder by water atomization method;

[0060] ...

Embodiment 2

[0066] This embodiment provides a Ti(C, N) based cermet, which uses Ti(C, N), TiC, WC, TaNbC, Mo2C and Cr3C2 as hard phases, Co and Ni as binder phases, Co -Rh-Os master alloy is an additive; the composition of Ti(C, N)-based cermet material is counted as weight percent: Ti(C, N) is 55%, TiC is 1.5%, WC is 12%, TaNbC is 8%, Mo2C is 7%, Cr3C2 is 0.5%, Co is 8%, Ni is 5.5%, and Co-Rh-Os master alloy is 2.5%. The components of the master alloy are calculated by weight percentage: the Rh is 25%, Os is 10%, and Co is the balance.

[0067] The preparation method of the Ti(C, N)-based cermet described in this embodiment mainly includes the following steps:

[0068] Step 1, prepare master alloy powder, use Co, Rh, Os as raw materials, carry out batching according to the above-mentioned weight percentage, adopt melting method to prepare Co-Rh-Os master alloy melt, melt described Co-Rh-Os master alloy The body is made of Co-Rh-Os master alloy powder by water atomization method;

[00...

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
densityaaaaaaaaaa
densityaaaaaaaaaa
densityaaaaaaaaaa
Login to view more

Abstract

The invention discloses a Ti(C, N)-based cermet. The Ti(C, N)-based cermet takes Ti(C, N), titanium carbide, tungsten carbide, TaNbC, Mo2C and Cr3C2 as hard phases, takes carbon monoxide and nickel asbinding phases and takes a Co-Rh-Os intermediate alloy as an additive, and the Ti(C, N)-based cermet material comprises, by weight percentage, 45-60% of Ti(C, N), 1-5% of titanium carbide, 12-18% oftungsten carbide, 6-12% of TaNbC, 5-12% of Mo2C, 0.3-1% of Cr3C2, 6-11% of carbon monoxide, 3-8% of nickel and 1-5% of the intermediate alloy.

Description

technical field [0001] The invention relates to the field of powder metallurgy, in particular to a Ti(C,N)-based cermet and a preparation method thereof. Background technique [0002] Cermet is a heterogeneous composite material composed of metal or alloy and one or more ceramic phases, and at the preparation temperature, the solubility between the metal phase and the ceramic phase is very small. In the field of engineering, in order to distinguish cemented carbide, steel-bonded alloy, etc., only the composite material whose ceramic phase is mainly TiC or Ti(C,N) is called cermet. Compared with traditional hard alloys, Ti(C,N)-based cermets not only have the characteristics of low density, high hardness, chemical stability, good oxidation resistance and excellent creep resistance, but also have a small friction coefficient against steel. , anti-cutting adhesion and ideal anti-crater wear ability, coupled with the high cutting edge strength and sharpness of Ti(C,N)-based cer...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C22C29/04C22C29/02C22C1/05
CPCC22C1/051C22C29/005C22C29/02C22C29/04
Inventor 李海坤胡伟斌兰登飞
Owner 株洲科而诺新材料有限公司
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