JPH0959074A - Production of combination of ceramic member with aluminum member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the joining of an Al member to a ceramic member by forming a metallic layer consisting essentially of Al on the surface of the ceramic member and joining the Al member onto the resultant metallic layer with a brazing filler material, containing Cu and Si and consisting essentially of Al. SOLUTION: A metallic layer, consisting essentially of Al and having >=0.08μm thickness is formed on the surface of a ceramic member and an Al member is then joined thereonto with a brazing filler material, containing 22.5-32.5wt.% Cu and >=5.9wt.% Si and consisting essentially of Al (having <=584 deg.C melting point). Nonoxide ceramics (e.g. Si3 N4 ), oxide ceramics (e.g. Al2 O3 ), oxynitride ceramics (e.g. sialon), etc., can be applied to the ceramic member. The method for producing a combination of the ceramic member 1 to the Al member 2 comprising forming the metallic layer 40 consisting essentially of Al on the surface of the ceramic member 1 and then joining the Al member 2 thereonto with the brazing filler material 3 consisting essentially of Al is shown in the figure.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a joined body of a ceramic member and a pure aluminum member or an aluminum alloy member (hereinafter also referred to as "aluminum member"), which is preferably used for structural members and the like. A method of manufacturing a body.

[0002]

2. Description of the Related Art Aluminum members (casting materials, wrought materials, etc .: melting point 460 ° C. or higher) are being used in various fields, and attempts have been made to combine them with different materials in order to make full use of their characteristics. There is. One of the different materials is a ceramic member, which is expected to be composited by brazing. As a conventional brazing joining method, there is known a method of joining a ceramic member and an aluminum member by using a brazing material specified by JIS.

[0003]

However, the melting point of the brazing material specified by JIS is 585 ° C or higher (JIS-BA41
45: melting point 585 ° C., JIS-BA4045: melting point 59
(0 ° C.), and the aluminum member having a melting point close to this temperature and the ceramic member could not be substantially joined because the aluminum member was also melted at the same time when the brazing filler metal was melted by heating. Further, even if they could be joined, there was a problem in strength of the joined body, which was a problem in practical use. Therefore, the method of joining using a brazing material specified by JIS is a wrought material with a relatively high melting point (melting point 60
However, most of the cast materials having a low melting point could not be joined.

Therefore, the present invention provides a manufacturing method for joining a ceramic member and an aluminum member using a brazing material having a low melting point so that the aluminum member can be selected in a wide range and can be easily and strongly bonded at low temperature. The purpose is to do.

[0005]

The first means is to form a metal layer containing Al as a main component on the surface of a ceramic member, and to form 22.5 to 32.5% by weight of Cu and Si on the metal layer.
A method for manufacturing a joined body of a ceramic member and an aluminum member, which comprises joining an aluminum member using a brazing material containing 5.9% by weight or less and having Al as a main component. A second means forms a metal layer containing Al as a main component on the surface of the ceramic member, and Cu 24.2 to 29. Cu on the metal layer.
A method for producing a joined body of a ceramic member and an aluminum member, which comprises joining an aluminum member using a brazing material containing 2 wt% and Si 3.4 to 5.8 wt% and having Al as a main component. A third means is to form a metal layer containing Al as a main component on the surface of the ceramic member, and 26.0 to 27.6 wt% Cu and 3.9 to 5.7 wt% Cu on the metal layer.
It is a method for manufacturing a joined body of a ceramic member and an aluminum member, in which an aluminum member is joined using a brazing material containing Al in a weight percentage. A fourth means is to form a plurality of layers on the surface of the ceramic member, the uppermost layer being a metal layer containing Al as a main component, and to form Cu on the metal layer.
A method for manufacturing a joined body of a ceramic member and an aluminum member, wherein an aluminum member is joined using a brazing material containing 22.5 to 32.5 wt% and Si 5.9 wt% or less and having Al as a main component. A fifth means is to form a plurality of layers on the surface of the ceramic member, the uppermost layer being a metal layer containing Al as a main component, and to form Cu24.2-2 on the metal layers.
A method for manufacturing a joined body of a ceramic member and an aluminum member, which comprises joining an aluminum member using a brazing material containing 9.2 wt% and Si 3.4 to 5.8 wt% and having Al as a main component. Further, a sixth means is to form a plurality of layers in which a metal layer containing Al as a main component is the uppermost layer on the surface of the ceramic member, and Cu26.0 is formed on the metal layer.
It is a manufacturing method of a joined body of a ceramic member and an aluminum member which joins an aluminum member using a brazing material which contains ˜27.6 wt% and Si 3.9 to 5.7 wt% and has Al as a main component. Fe, M in the brazing material of the means
A method for manufacturing a bonded body of a ceramic member and an aluminum member containing at least one selected from the group consisting of g, Mn and Ti is preferable. Further, a method for manufacturing a joined body of a ceramic member and an aluminum member, wherein the metal layer of the means has a thickness of 0.08 μm or more, is preferable.

Here, in the above means, as a method of forming the metal layer on the surface of the ceramic member, there are methods such as vapor deposition, sputtering and plating. Here, the “metal layer containing Al as a main component” may be a metal layer made of pure Al, or a metal layer containing other components as long as the wettability with the brazing material can be sufficiently maintained. As other ingredients,
For example, Si and Cu. Here, "a plurality of layers in which a metal layer containing Al as a main component is the uppermost layer" means that two or more layers are formed on the surface of the ceramic member, and at least the uppermost layer is a metal layer containing Al as a main component. Means there is. The layer below the uppermost layer, that is, the intermediate metal layer between the "metal layer whose uppermost layer contains Al as a main component" and the "ceramics member" is one or more metal layers having good reactivity with the ceramics member. It is preferably a layer. Specifically, an active metal layer such as Ti or Zr is preferable. In addition, the ceramic member of the present invention is made of non-oxide ceramics such as Si ₃ N ₄ , SiC, and A.
A as oxide ceramics such as 1N, TiN, TiC, etc.
l ₂ O ₃ , ZrO ₂ , TiO _2, etc., sialon as oxynitride ceramics, or a composite material thereof, Si ₃ N ₄ −
TiN, ZrO ₂ —TiN, etc. are applicable.

[0007]

The manufacturing method of the first and fourth means is Cu22.
5 to 32.5 wt% and Si up to 5.9 wt% A
Since a brazing material containing 1 as a main component is used for joining, the melting point of the brazing material is 584 ° C. or lower, which is lower than the melting point of the JIS standard brazing material, and as a result, an aluminum member having a solidus temperature above this temperature. The wettability is improved with respect to (cast material, wrought material) and the metal layer containing Al as a main component formed on the bonding surface of the ceramic member, and high-strength bonding becomes possible. In addition, the manufacturing method of the second and fifth means is Cu 24.2
29.2 wt% and Si 3.4-5.8 wt% Al
Since the joining is performed using a brazing material containing as a main component, the melting point of the brazing material is 560 ° C. or lower, which is lower than the melting point of the JIS standard brazing material, and as a result, an aluminum member having a solidus temperature above this temperature ( The wettability is improved and high-strength bonding is possible with respect to the metal layer containing Al as a main component formed on the bonding surface of the cast material, the wrought material) or the ceramic member. Furthermore, the manufacturing method of the third and sixth means is Cu 26.0.
Since a brazing material containing 27.6% by weight and 4 to 6.5% by weight of Si and having Al as a main component is used for joining, the melting point of the brazing material is 540 ° C. or lower, which is lower than the melting point of the JIS standard brazing material. As a result, the wettability is improved with respect to the metal layer containing Al as a main component formed on the joint surface of the aluminum member (cast material, wrought material) or ceramic member having a solidus temperature higher than this temperature, and the high strength is obtained. It is possible to make various joints.

Fe, Mg, and M are added to the brazing material of each of the above means.
When at least one selected from the group consisting of n and Ti is contained, effects such as lowering of melting point of brazing material, improvement of wettability, acceleration of age hardening and the like can be obtained, and joint strength can be improved. Further, by forming the metal layer containing Al as a main component on the surface of the ceramic member, the wetting property between the surface of the ceramic member and the brazing material is improved, and the bonding strength with the aluminum member can be increased. Further, by forming a plurality of layers with the metal layer containing Al as the main component being the uppermost layer on the surface of the ceramic member, the wetting property between the surface of the ceramic member and the brazing material is improved and the bonding strength with the aluminum member is improved. Can be increased. Further, when the thickness of the “metal layer containing Al as a main component” is thinner than 0.08 μm, the bonding strength is low, but when it is 0.08 μm or more, a high-strength bonded body can be obtained. It is because the metal layer containing Al as a main component increases the wetting property between the surface of the ceramic member and the brazing material at the time of joining. However, it is not preferable to extremely thicken the metal layer containing Al as a main component, which exceeds 5 μm, because it increases the manufacturing cost of the bonded body. Further, even if the metal layer containing Al as a main component alone has a high adhesion strength to the ceramic member,
The adhesion strength between the ceramic member and the metal layer containing Al as a main component is improved by interposing one or more intermediate metal layers having good reactivity with the ceramic member between the metal layer containing Al as a main component and the ceramic member. As a result, the joint strength is increased. For example, Ti layer, Zr layer, Mo
It is preferable to interpose one or more as an intermediate metal layer such as + Mn layer.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION A method for manufacturing a bonded body of a ceramic member and an aluminum member according to the present invention will be described with reference to FIGS. FIG. 1 shows that a metal layer 40 containing Al as a main component is formed on the surface of a ceramic member 1 which is an embodiment of the present invention, and a predetermined brazing material 3 containing Al as a main component is formed on the metal layer 40. The state just before joining in the manufacturing method of the joined body of the ceramic member 1 and the aluminum member 2 which joins the aluminum member 2 using is shown. In FIG. 2, a plurality of layers 4 in which a metal layer 40 containing Al as a main component is the uppermost layer are formed on the surface of a ceramic member 1 according to another embodiment of the present invention, and a predetermined brazing material is formed on the metal layer 40. Ceramic member 1 and aluminum member 2 for joining aluminum member 2 using a material
The state immediately before joining in the method for producing a joined body with. A
Between the metal layer 40 containing 1 as a main component and the ceramic member 1, there is an intermediate metal layer 41 that is a part of the plurality of layers 4. Here, the intermediate metal layer 41 is “a layer containing Al as a main component”.
In that case, after all, only the metal layer containing Al as a main component is present on the ceramic member 1, and the same manufacturing method as the above-mentioned one manufacturing method is obtained.

[0010]

Examples-Experimental Example 1-Various ceramic members 1 (diameter 18 mm, shown in Table 1
75 mm in length and various aluminum members 2 (diameter 1
8 mm, length 75 mm), and brazing material 3 shown in Table 1
Join using. As the aluminum member 2, various aluminum member casting materials specified by JIS were used. On the surface of each ceramic member 1, as shown in FIG.
The metal layer 40 shown in is formed by sputtering, vapor deposition, or the like. Separately, as the brazing filler metal 3, a foil (diameter 18 mm, thickness 100 μm) was prepared by melting the composition shown in Table 1 and flowing it on a rotating water cooling roll made of Cu (liquid quenching method).

[0011]

[Table 1]

Then, the aluminum member 2, the brazing material 3,
Stack the ceramic members 1 in this order and fix them on the jig.
Placed in the furnace, 3 in the vicinity of the melting point of the brazing filler metal in an inert gas atmosphere
The bonded body was obtained by holding it for 0 minutes to carry out bonding. After joining
A tensile test piece was subjected to a finishing test in accordance with JIS No. 4 test piece. The results are shown in Table 1. As shown in Table 1, the bonded body obtained by the manufacturing method of the present invention had high bonding strength. Specifically, the aluminum member 2 at the joint interface was deformed first, and then the interface between the aluminum member 2 and the ceramic member 1 was fractured. The fracture surface is the aluminum member 2 on the fracture surface of the ceramic member 1.
Has become attached. The joint strength of the brazing material was equivalent to that of the aluminum member 2 or the ceramic member 1 itself. On the other hand, in the joined body produced by the manufacturing method of the comparative example, the joining strength was low because it was not joined or was the starting point and the progress of fracture was in the joined interface or in the brazing filler metal 3 layers.

-Experimental Example 2-Various ceramic members 1 (diameter 18 mm, shown in Table 2
75 mm in length and various aluminum members 2 (diameter 1
8 mm, length 75 mm), and brazing material 3 shown in Table 2
Join using. As the aluminum member 2, various aluminum member casting materials specified by JIS were used. On the surface of each ceramic member 1, a plurality of layers 4 in which the metal layer 40 containing Al as a main component is the uppermost layer are formed in advance. Specifically, as shown in Table 2, after forming the intermediate metal layer 41 on the surface of the ceramic member 1 by the formation method shown in Table 2, the uppermost metal layer 40 is formed. Separately, the brazing filler metal 3 was melted with the composition shown in Table 2 and poured on a rotating water cooling roll made of Cu (liquid quenching method) to form a foil (diameter 18 mm, thickness 1
00 μm) was prepared.

[0014]

[Table 2]

Then, the aluminum member 2, the brazing material 3,
Stack the ceramic members 1 in this order and fix them on the jig.
Placed in the furnace, 3 in the vicinity of the melting point of the brazing filler metal in an inert gas atmosphere
The bonded body was obtained by holding it for 0 minutes to carry out bonding. After joining
A tensile test piece was subjected to a finishing test in accordance with JIS No. 4 test piece. Table 2 shows the results. As shown in Table 2, the bonded body obtained by the manufacturing method of the present invention had high bonding strength. Specifically, the aluminum member 2 at the joint interface was deformed first, and then the interface between the aluminum member 2 and the ceramic member 1 was fractured. The fracture surface is the aluminum member 2 on the fracture surface of the ceramic member 1.
Has become attached. The joint strength of the brazing material was equivalent to that of the aluminum member 2 or the ceramic member 1 itself. On the other hand, in the joined body produced by the manufacturing method of the comparative example, the joining strength was low because it was not joined or was the starting point and the progress of fracture was in the joined interface or in the brazing filler metal 3 layers.

[0016]

EFFECTS OF THE INVENTION By using the manufacturing method according to the present invention, it is possible to join a cast aluminum material having a low melting point and difficult to braze to a ceramics member. Therefore, the aluminum member as the joining member can be selected in a very wide range including the wrought material, and a high-strength joined body of the ceramic member and the aluminum member can be obtained.

[Brief description of drawings]

FIG. 1 is a diagram showing a state just before joining in a method for producing a joined body of a ceramic member and an aluminum member of Experimental Example 1 of the present invention.

FIG. 2 is a diagram showing a state immediately before joining in a method for producing a joined body of a ceramic member and an aluminum member of Experimental Example 2 of the present invention.

[Explanation of symbols]

1 ... Ceramic member 2 ... Aluminum member 3 ... Brazing material 4 ... Plural layers whose uppermost layer is a metal layer containing Al as a main component 40 ... Al as a main component Metal layer 41 ... Intermediate metal layer

Claims (8)

[Claims] 1. A metal layer containing Al as a main component is formed on the surface of a ceramic member, and Cu22.5-3 is formed on the metal layer.
A method of manufacturing a joined body of a ceramic member and an aluminum member, which comprises joining an aluminum member using a brazing material containing Al as a main component and containing 2.5% by weight or less than 5.9% by weight of Si. 2. A metal layer containing Al as a main component is formed on the surface of a ceramic member, and Cu 24.2-2 is formed on the metal layer.
A method for manufacturing a joined body of a ceramic member and an aluminum member, which comprises joining an aluminum member using a brazing material containing 9.2 wt% and Si 3.4 to 5.8 wt% and having Al as a main component. . 3. A metal layer containing Al as a main component is formed on the surface of a ceramic member, and Cu 26.0-2 is formed on the metal layer.
7.6 wt% and Si 3.9-5.7 wt% Al
A method for manufacturing a joined body of a ceramic member and an aluminum member, which comprises joining an aluminum member using a brazing material containing as a main component. 4. A plurality of layers in which a metal layer containing Al as a main component is the uppermost layer is formed on the surface of the ceramic member, and 22.5 to 32.5% by weight of Cu and 5.9% by weight of Si are formed on the metal layers. A method for manufacturing a joined body of a ceramic member and an aluminum member, which comprises joining an aluminum member using a brazing material containing Al as a main component, including: 5. A plurality of layers having a metal layer containing Al as a main component as an uppermost layer are formed on the surface of the ceramic member, and Cu 24.2 to 29.2 wt% and Si 3.4 to 4 are formed on the metal layers.
A method for manufacturing a joined body of a ceramic member and an aluminum member, which comprises joining an aluminum member using a brazing material containing 5.8% by weight and containing Al as a main component. 6. A plurality of layers having a metal layer containing Al as a main component as an uppermost layer are formed on a surface of a ceramic member, and 26.0 to 27.6 wt% Cu and 3.9 to Si are formed on the metal layers.
A method for manufacturing a joined body of a ceramic member and an aluminum member, which comprises joining an aluminum member using a brazing material containing 5.7% by weight and containing Al as a main component. 7. The brazing material contains Fe, Mg, Mn and Ti.
7. The method for producing a joined body of a ceramic member and an aluminum member according to claim 1, wherein at least one kind selected from the group is included. 8. The method for manufacturing a joined body of a ceramic member and an aluminum member according to claim 1, wherein the metal layer has a thickness of 0.08 μm or more.