ZrHfTaNbTiC ultrahigh-temperature high-entropy ceramic material as well as preparation method thereof

A ceramic material and ultra-high temperature technology, which is applied in the field of ultra-high temperature materials and their preparation, can solve the problems of poor mechanical properties of materials, high pressure required, and low sintering temperature, and achieve thermodynamic stability, good mechanical properties, and low preparation temperature. Effect
CN108911751AActive Publication Date: 2018-11-30SOUTH CHINA UNIV OF TECH
1 Cites 30 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SOUTH CHINA UNIV OF TECH
Publication Date
2018-11-30

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a ZrHfTaNbTiC ultrahigh-temperature high-entropy ceramic material as well as a preparation method thereof. The ZrHfTaNbTiC ultrahigh-temperature high-entropy ceramic material consists of elements Zr, Hf, Ta, Nb, Ti and C and is a single rock-salt-phase structure. The ZrHfTaNbTiC ultrahigh-temperature high-entropy ceramic material is prepared by adopting a hot pressing and sintering technology. The prepared ZrHfTaNbTiC ultrahigh-temperature high-entropy ceramic material has excellent mechanical properties, and the hardness of the ceramic material reaches up to 38.52 to 41.25 GPa. The preparation method provided by the invention is simple in preparation process, high in efficiency and speed, low in synthetic temperature (1700 to 1900 DEG C), small in impressed pressure (20 to 30 MPa), low in energy consumption, safe, and environmentally friendly, has significant characteristics of repeatability and high reliability and the like, and can be applied to the industrial production.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of ultra-high-temperature materials and their preparation, and in particular relates to a ZrHfTaNbTiC ultra-high-temperature and high-entropy ceramic material and a preparation method thereof. Background technique

[0002] Multi-principal high-entropy materials are materials prepared with the concept of entropy stabilization. Multi-principal high-entropy materials generally contain 5 or more elements that are thermodynamically chaotically distributed in the material system, and the content of each element is between 5% and 35%. %. The high entropy effect caused by multiple principal elements can effectively improve the thermodynamic stability of the material, reduce the sintering temperature of the material, facilitate the formation of a simple crystal phase, and endow the material with rich performance adjustment space. In addition, the solid solution strengthening mechanism brought about by multi-principa...

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