Transition metal boride-glass ultra-high temperature oxidation resistant composite material and preparation method thereof

A high-temperature anti-oxidation and transition metal technology, which is applied in the field of transition metal boride-glass ultra-high temperature anti-oxidation composite materials and its preparation, can solve the problem of transition metal boride-glass ultra-high temperature anti-oxidation composite materials that have been reported but have not been found yet. Technical and other issues, to achieve the effects of lower sintering temperature, simple implementation, and good thermal erosion resistance
CN106747462BActive Publication Date: 2019-10-25NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
1 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
Publication Date
2019-10-25

Smart Images

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

Abstract

The invention provides a transition metal boride-glass composite material with ultrahigh-temperature oxidation resistance. The composite material is prepared from transition metal boride and glass, wherein the transition metal boride is HfB2, ZrB2 or TiB2, and the glass is silicate glass. The invention further provides a preparation method of the transition metal boride-glass composite material with ultrahigh-temperature oxidation resistance. The preparation method comprises the following steps: 1, adding transition metal boride powder and glass powder to a high-energy ball mill for ball milling to obtain mixed powder; 2, performing compression molding on the mixed powder to obtain a compressed blank; 3, performing pressureless sintering on the compressed blank to obtain the transition metal boride-glass composite material with ultrahigh-temperature oxidation resistance. A composite oxide film with an oxide as a skeleton and borosilicate glass as a filling agent can be formed in situ by the composite material in a high-temperature oxidation environment, and the composite material has excellent high-temperature oxidation resistance and good high-temperature high-speed airflow washout resistance.
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 protection, and in particular relates to a transition metal boride-glass ultra-high temperature anti-oxidation composite material and a preparation method thereof. Background technique

[0002] Among borides of all transition metals, borides of group IVB metals have the best high temperature oxidation resistance at 1500°C. At the same time, ultra-high temperature boride ceramics have a high melting point, good chemical stability and high-temperature mechanical properties, and have broad application prospects in the ultra-high temperature field. Boride ceramics have been widely used as hot-end parts alone through hot-pressing sintering process, or as important components in high-temperature protective coatings of carbon-carbon composites.

[0003] However, the high temperature oxidation resistance of ultra-high temperature boride ceramics is limited by the oxidation products (B 2 o...

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