Zirconium diboride based ultra-high-temperature ceramic welded joint and manufacturing method thereof

A technology of ultra-high temperature ceramics and welded joints, applied in the field of ceramic material welding, can solve the problems of low welding temperature and low reliability of welded joints, and achieve the effect of good bonding, good thermophysical properties, and enhanced bonding.

Inactive Publication Date: 2017-07-07
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to provide a kind of suitable for ZrB 2 High-temperature solder based on UHTCs materials and its application to solve the problems of low soldering temperature and low reliability of soldered joints existing in existing solders. ZrB with large size and complex shape 2 The preparation of UHTCs-based materials provides a method to reduce processing costs and improve production efficiency, thereby promoting the wide application of UHTCs materials

Method used

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  • Zirconium diboride based ultra-high-temperature ceramic welded joint and manufacturing method thereof
  • Zirconium diboride based ultra-high-temperature ceramic welded joint and manufacturing method thereof
  • Zirconium diboride based ultra-high-temperature ceramic welded joint and manufacturing method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1. Mix nano-scale Ni, Mo, Cr, and Fe powders according to the ratio of 67Ni-30Mo-1Cr-2Fe (that is, the mass percentages are 67%, 30%, 1%, and 2% respectively), and add the mass percentage 5wt% polyvinyl butyral (PVB) and 40wt% dehydrated alcohol by mass percent, ball milled the mixture in a planetary ball mill for 24 hours to obtain a uniform paste solder for subsequent use;

[0033] Second, the ZrB 2 -The surface of SiC ceramics to be welded is first polished with No. 600 water sandpaper, then placed in acetone and alcohol for ultrasonic cleaning for 30 minutes, and dried for later use;

[0034] 3. Coat the solder evenly on the ZrB 2 - On the surface of SiC ceramics to be welded, a ceramic-solder-ceramic three-layer structure is formed, fixed with a fixture, and the thickness of the solder layer is 10-1000 microns;

[0035] 4. Put the three-layer structure sample fixed by the above fixture into the graphite carbon tube furnace. Under the argon atmosphere, the pressure ...

Embodiment 2

[0038] 1. The powders of nanoscale Ni, Mo, Cr, W, Co, and Fe are mixed according to 57Ni-16Mo-16Cr-4W-2Co-5Fe (that is, the mass percentages are 57%, 16%, 16%, and 4% respectively. , 2%, 5%) were mixed in proportion, adding mass percent was 8wt% polyvinyl butyral (PVB) and mass percent was a mixture of absolute ethanol and methyl ethyl ketone (mass ratio was 4:6) , mill the mixture in a planetary ball mill for 24 hours to obtain a uniform creamy solder, and set aside;

[0039] Second, the ZrB 2 -The surface of SiC ceramics to be welded is first polished with No. 600 water sandpaper, then placed in acetone and alcohol for ultrasonic cleaning for 30 minutes, and dried for later use;

[0040] 3. Coat the solder evenly on the ZrB 2 - On the surface of SiC ceramics to be welded, a ceramic-solder-ceramic three-layer structure is formed, fixed with a fixture, and the thickness of the solder layer is 10-1000 microns;

[0041] 4. Put the three-layer structure sample fixed by the abo...

Embodiment 3

[0044] 1. The nano-scale Ni, Mo, Cr, W, Co, Fe powders are mixed according to 43Ni-14Mo-30Cr-3W-5Co-5Fe (that is, the mass percentages are 43%, 14%, 30%, 3% respectively , 5%, 5%) are mixed in proportion, adding mass percent is 10wt% polyvinyl butyral (PVB) and mass percent is the dehydrated alcohol of 50wt%, and ball milling mixes 24 hours in planetary ball mill, obtains Uniform paste solder, set aside;

[0045] Second, the ZrB 2 -The surface of SiC ceramics to be welded is first polished with No. 600 water sandpaper, then placed in acetone and alcohol for ultrasonic cleaning for 30 minutes, and dried for later use;

[0046] 3. Coat the solder evenly on the ZrB 2 - On the surface of SiC ceramics to be welded, a ceramic-solder-ceramic three-layer structure is formed, fixed with a fixture, and the thickness of the solder layer is 10-1000 microns;

[0047] 4. Put the three-layer structure sample fixed by the above fixture into the graphite carbon tube furnace. Under the argon...

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Abstract

The invention relates to a zirconium diboride based ultra-high-temperature ceramic welded joint and a manufacturing method thereof. The zirconium diboride based ultra-high-temperature ceramic welded joint comprises at least two zirconium diboride based ultra-high-temperature ceramic substrates and ultra-high-temperature solder layers between the zirconium diboride based ultra-high-temperature ceramic substrates, wherein an interface reaction layer is located between each zirconium diboride based ultra-high-temperature ceramic substrate and the corresponding ultra-high-temperature solder layer, and the interface reaction layers are formed through mutual penetration of the zirconium diboride based ultra-high-temperature ceramic substrates and the ultra-high-temperature solder layers. The chemical constitution of each ultra-high-temperature solder layer is Ni1-x-yAxBy, wherein A is at least one of molybdenum and chromium, B is at least one of tungsten, cobalt, ferrum, zirconium and titanium, x is larger than zero and smaller than or equal to 0.6, and y is larger than or equal to zero and smaller than or equal to 0.25.

Description

technical field [0001] The invention relates to a high-temperature solder of a zirconium diboride-based ultra-high-temperature ceramic material and an application thereof, belonging to the technical field of ceramic material welding. Background technique [0002] Zirconium diboride (ZrB 2 ) As a kind of Ultra High Temperature Ceramics (UHTCs) materials, it has excellent properties such as high melting point, high strength, high modulus, high hardness, high thermal conductivity, high electrical conductivity, and good oxidation resistance and chemical corrosion resistance. Comprehensive performance. [0003] However, in practical applications, limited by the preparation process and equipment conditions, it is difficult to directly manufacture large-sized and complex-shaped ceramic components; also face enormous challenges. Ceramic welding is easy to solve this problem. [0004] At present, in the research on welding of UHTCs materials, most of them use active metals (such ...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C04B37/00
Inventor张辉闫永杰刘岩刘学建黄政仁
OwnerSHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI