Preparation method for metal ceramic composite special-shaped piece

A technology for metal-ceramic composite and special-shaped parts, which is applied in the field of preparation of metal-ceramic composite special-shaped parts, can solve the problems of difficult connection between ceramics and metals, difficult to form metal-ceramic composite special-shaped parts, etc., and achieves the effect of avoiding deformation and realizing forming.

Inactive Publication Date: 2011-06-08
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of the difficulty in connecting ceramics and metals and the difficulty in forming metal-ceramic composite special-shaped parts by traditional molding techniques, and further provide a preparation method for metal-ceramic composite special-shaped parts

Method used

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Effect test

specific Embodiment approach 1

[0012] Specific Embodiment 1: The steps of the preparation method of the metal-ceramic composite special-shaped parts in this embodiment are: Step 1: Select ceramic powder and metal powder, and the difference between the sintering temperature of the ceramic powder and the sintering temperature of the metal powder is between 0-100°C between;

[0013] Step 2: Select an organic binder;

[0014] Step 3: Preparation of feed material, put the ceramic powder with a loading capacity of 48-60% into the mixer and heat it to 100-300°C, then add an organic binder for mixing and granulation, and the kneading and granulation The time is 1-2 hours, and the cylindrical ceramic feed material with a length of 3-5mm and a diameter of 2mm is made, and the metal powder with a loading capacity of 48-60% is put into a mixer and heated to 100-300°C, and then Then add an organic binder for mixing and granulation. The mixing and granulation time is 1-2 hours to make a cylindrical metal feed with a len...

specific Embodiment approach 2

[0019] Embodiment 2: This embodiment differs from Embodiment 1 in that the ceramic powder in step 1 is composed of one or more of zinc oxide, zirconium oxide, aluminum oxide, silicon nitride, and silicon carbide. When two or more of the above components are mixed, an appropriate mixing ratio can be selected according to the wear resistance, corrosion resistance and high temperature usability of the desired product, so as to obtain a metal-ceramic composite special-shaped part that meets actual needs.

specific Embodiment approach 3

[0020] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the metal powder in step 1 is composed of one or more of nickel-based superalloys, molybdenum alloys, niobium-silicon alloys, and cobalt-based superalloys. . When two or more of the above components are mixed, an appropriate mixing ratio can be selected according to the wear resistance, corrosion resistance and high temperature usability of the desired product, so as to obtain a metal-ceramic composite special-shaped part that meets actual needs.

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Abstract

The invention relates to a preparation method for a metal ceramic composite special-shaped piece, which solves the problems that the connection between ceramic and metal is difficult and a traditional forming technology is difficult to form the metal ceramic composite special-shaped piece. The preparation method includes the following steps: ceramic powder and metal powder are selected, an organic bonding agent is selected, a feeding material is prepared, the prepared feeding material is added to the corresponding part of a forming mould cavity, a special-shaped piece grey blank is formed through pressing in a hot-pressing sintering furnace and is degreased when the indoor temperature reaches 550 DEG C so as to obtain a forming blank material, and then hot-pressing sintering is carried out on the degreased forming blank material so as to obtain the special-shaped piece; the sintering temperature is within 1,000 to 2,000 DEG C, and the pressure is within 20 to 40MPa. The preparation method not only avoids the problems of deformation, joint cracking and the like caused by inconsistent shrinking of metal and ceramic, but also realizes connection between metal and ceramic and the one-time forming of the metal ceramic composite special-shaped piece.

Description

technical field [0001] The invention relates to a method for preparing a metal-ceramic composite part, in particular to a method for preparing a metal-ceramic composite special-shaped part. Background technique [0002] In recent years, with the large-scale research and development of ceramic materials, the connection technology of ceramics and ceramics or ceramics and metals has attracted more and more attention. Realizing the effective connection between ceramics and metals can further expand the application range of ceramics. However, since ceramics and metals are two types of materials with different properties, there are differences in chemical and physical properties at the interface when they are combined with each other, especially the difference in chemical bonds. It is difficult to achieve effective connection by conventional welding methods. Therefore, the connection of ceramics and metals has become the focus of research on the connection of dissimilar materials...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/12B22F3/14
Inventor 卢振张凯锋王长瑞
Owner HARBIN INST OF TECH
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