A kind of metal-ceramic composite body and preparation method thereof

Abstract

For overcoming the problems of low hardness of a metal member, low combination force of the metal member with a ceramic base body, and poor appearance and performance in a metal / ceramic composite body in the prior art, the invention provides a metal / ceramic composite body which comprises a ceramic base body and a metal member, a groove being formed in the surface of the ceramic base body and the metal member being arranged in the groove. The metal member comprises a zirconium-based amorphous alloy base body and a reinforcing material in the amorphous alloy. The reinforcing material is one or more selected from W, Mo, Ni, Cr, stainless steel, WC, TiC, SiC, ZrC or ZrO2. Meanwhile, the invention also discloses a preparation method of the metal / ceramic composite body. In the metal / ceramic composite body, the surface hardness of the metal member is high and the metal member has strong combination force with the ceramic base body. The metal / ceramic composite body is excellent in appearance and performance.

Description

technical field

[0001] The invention belongs to the field of metal-ceramic composite materials, and in particular relates to a metal-ceramic composite and a preparation method thereof. Background technique

[0002] Metal-ceramic composite wear-resistant materials are mainly used in metallurgy, building materials, mines, refractory materials and electric power and other fields for material crushing and wear-resistant parts in grinding equipment, such as roller sleeves, liners, grinding rings, grinding discs, etc., in order to meet more The performance of the metal-ceramic composite depends on the performance of the metal, the performance of the ceramic and the bonding strength of the two. The excellent properties of metal-ceramic composites make them widely used in many fields. For example, the existing research is also used to prepare metal decorative ceramic products with ceramic or overall mirror effect and metal matte effect at the same time, and its good wear resistance...

Examples

preparation example Construction

[0027] The present invention also provides a method for preparing a metal-ceramic composite, comprising:

[0028] S1, providing a ceramic substrate, the surface of the ceramic substrate has grooves;

[0029] S2. Fill the groove with reinforcing particles, and then sinter at 1000°C-1200°C in a protective atmosphere to form a skeleton-shaped reinforcing material in the groove; the reinforcing particles are selected from W, Mo, Ni, Cr, Stainless steel, WC, TiC, SiC, ZrC or ZrO 2 one or more of

[0030] S3, infiltrating the molten amorphous alloy in the groove filled with the reinforcing material, and obtaining a metal-ceramic composite body after cooling.

[0031] As mentioned above, the coefficient of thermal expansion of the ceramic matrix obtained above is preferably 7-10×10 -6 K -1 . Specifically, the above-mentioned ceramic matrix is ​​preferably made of zirconia ceramics.

[0032] According to the present invention, the surface of the ceramic substrate used to prepare...

Embodiment 1

[0060] This example is used to illustrate the cermet composite and its preparation method disclosed in the present invention.

[0061] (1) Weigh 300g W powder (particle size D50 is 1μm, thermal expansion coefficient is 4.6×10 -6 K -1 ) and 1.2g of silane coupling agent 9116 were dissolved in 25g of methyl silicone oil, and the two were stirred for about 2 hours to mix evenly, and defoamed in a vacuum oven for 30 minutes to obtain a W-containing slurry, which was coated on the blank Zirconia ceramics with a depth of 0.25 mm and a width of 0.5 mm formed during body preforming (the coefficient of thermal expansion is 10×10 -6 K -1 ) on the surface groove, fill the groove, and defoam again in the vacuum drying oven for 30 minutes, then put the zirconia ceramics into the vacuum resistance furnace for sintering, raise the temperature to 600°C at 2°C / min, and Keep it warm for 1h, then raise the temperature to 1100°C at 10°C / min, and keep it warm for 1h to form a skeleton-like rein...

Embodiment 2-5

[0064] This example is used to illustrate the cermet composite and its preparation method disclosed in the present invention.

[0065] Using the same method as in Example 1 to prepare metal-ceramic composite samples S2-S5,

[0066] The different specific parameters are shown in Table 1.

technical field

[0001] The invention belongs to the field of metal-ceramic composite materials, and in particular relates to a metal-ceramic composite and a preparation method thereof. Background technique

[0002] Metal-ceramic composite wear-resistant materials are mainly used in metallurgy, building materials, mines, refractory materials and electric power and other fields for material crushing and wear-resistant parts in grinding equipment, such as roller sleeves, liners, grinding rings, grinding discs, etc., in order to meet more The performance of the metal-ceramic composite depends on the performance of the metal, the performance of the ceramic and the bonding strength of the two. The excellent properties of metal-ceramic composites make them widely used in many fields. For example, the existing research is also used to prepare metal decorative ceramic products with ceramic or overall mirror effect and metal matte effect at the same time, and its good wear resistance...

Examples

preparation example Construction

[0027] The present invention also provides a method for preparing a metal-ceramic composite, comprising:

[0028] S1, providing a ceramic substrate, the surface of the ceramic substrate has grooves;

[0029] S2. Fill the groove with reinforcing particles, and then sinter at 1000°C-1200°C in a protective atmosphere to form a skeleton-shaped reinforcing material in the groove; the reinforcing particles are selected from W, Mo, Ni, Cr, Stainless steel, WC, TiC, SiC, ZrC or ZrO 2 one or more of

[0030] S3, infiltrating the molten amorphous alloy in the groove filled with the reinforcing material, and obtaining a metal-ceramic composite body after cooling.

[0031] As mentioned above, the coefficient of thermal expansion of the ceramic matrix obtained above is preferably 7-10×10 -6 K -1 . Specifically, the above-mentioned ceramic matrix is ​​preferably made of zirconia ceramics.

[0032] According to the present invention, the surface of the ceramic substrate used to prepare...

Embodiment 1

[0060] This example is used to illustrate the cermet composite and its preparation method disclosed in the present invention.

[0061] (1) Weigh 300g W powder (particle size D50 is 1μm, thermal expansion coefficient is 4.6×10 -6 K -1 ) and 1.2g of silane coupling agent 9116 were dissolved in 25g of methyl silicone oil, and the two were stirred for about 2 hours to mix evenly, and defoamed in a vacuum oven for 30 minutes to obtain a W-containing slurry, which was coated on the blank Zirconia ceramics with a depth of 0.25 mm and a width of 0.5 mm formed during body preforming (the coefficient of thermal expansion is 10×10 -6 K -1 ) on the surface groove, fill the groove, and defoam again in the vacuum drying oven for 30 minutes, then put the zirconia ceramics into the vacuum resistance furnace for sintering, raise the temperature to 600°C at 2°C / min, and Keep it warm for 1h, then raise the temperature to 1100°C at 10°C / min, and keep it warm for 1h to form a skeleton-like rein...

Embodiment 2-5

[0064] This example is used to illustrate the cermet composite and its preparation method disclosed in the present invention.

[0065] Using the same method as in Example 1 to prepare metal-ceramic composite samples S2-S5,

[0066] The different specific parameters are shown in Table 1.

Images