JPS59187846A - Manufacture of laminated structure of ceramic and metal - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a ceramic-metal laminate structure by casting molten metal.

Attempts have often been made to cast molten metal on ceramic to form a composite with ceramic.

For example, various attempts have been made to make a laminated plate by pouring molten metal into a ceramic plate, or to make a laminated ζ-vene by pouring molten metal into the outside or inside of a ceramic sleeve. However, these attempts have not always been successful.

This is because ceramics are inherently brittle and have no elongation, so they cannot sufficiently follow the deformation of cast metal or complex stress changes during solidification and cooling. These problems can almost be said to be fatal, and with conventional methods,
It was impossible to resolve.

The present invention has been made in view of the shortcomings of the prior art, and it is an object of the present invention to provide a new method for combining ceramic with cast metal without destroying it in any way.

The present invention was made based on the following new findings.

For example, when casting molten metal on one side of a ceramic plate to form a composite, if the coefficient of linear expansion of the metal is larger than that of the ceramic, a kind of bimetal phenomenon will occur as the temperature of the metal falls, and the ceramic part will It will start to fold inward when you turn it on your back.

If the ceramic part has some elongation, it can respond flexibly to this, but if there is no elongation at all, cracks will eventually occur in the ceramic part.

This is the general pattern of conventional methods. 〃1Unless the expansion coefficients (ri) are the same, this is an entirely unavoidable phenomenon, and even if 7 or /ζ-e!
) The contraction is 1-1 in the case where the j constant is redundant and the rate is redundant.

Zoko-C" The blind person is diligent about 7 with regard to and L (theta [ui: is performed, both sides of 4-, Rami, and Ri) to eliminate the imbalance in the core 1~,...U2. [Sunotori J] In the fuko state, it is appropriate for JJ, and Jusun [1 furnace 4, I Riruni, -, (,
-1 If you cool it for 7N in a state close to this, it will break.
In other words, it leaves a fatal residual stress on each station.

So [-2 and +-i;, internal... Lance ゛1) (
, Dry hill blue/One color for ζ/7 in the PuJ method! Compassionately,
Junction IJTI anti-χ=]-II! +1 is also molten metal and ``the one that wraps σ at the same time θ- is the most f'ili'i single-r and effective 14
↓Noju゛tea0. After leaving I.P.C.) , td good, 'T-
,'-4 bow-sho 1i +. t, /(-koni l”1
111J', j elephant is 1・'Rami... Yu and Shi genus joining surface or Sakae (S sincerely IX combination k JJf) j included (not #i!1 item' shore joining) [It was also observed in the inquiry that the invention is here: 5.
Based on regular knowledge, there is a C device,
The gist is that when manufacturing metal laminated structures using two molten metals, one nail is used nationwide.
When the ceramic and the ceramic are fully flexed, the joint surface of the ceramic and the ceramic, which is generated at the time of solidification and melting of the total pressure, can be applied to the opposite surface of the joint surface. The method of manufacturing the laminated (II\) precursor is θ3.

Next, I will explain an example of the wood inventiveness H on the first page of 1. Shajurami/Rinohata (
njV(;i soi; Blue gold, there is an explanation 1z1-C when a country is 1/combined.

Ultimately, (a> ll(1yJ-3-1 71,
It becomes a laminate of 10-nomi Tsukuiru (1) and ↓ノ■Samurai-kin-ku (2).

,+J When crushing, heat shock "1" is applied to the ramic (reverse cracking 7'i,, if necessary to prevent 6), preheat the C7l with 1JJ type. (3)
In the (/・) shown in the diagram, place the temporary (1) in the
The opposite of the joining surface $ill i/i”: also η・gap・
'1-S7,... Joint surface and antibody IIl]l
The distance between I and the Uj type is better.↑Although,
6. Cast) f,,1.
To maintain distance from J, clean and space
It is convenient to set up. Next, the metal is poured into the mold.

And 1 person is / ζ melt (d-7 multi-7i) - fill the gap in the pool j 1 purchase 15, 1 move (The value of 0 is indicated by the 1 line 2./
This part is molten metal.

Next, the molten metal in the mold becomes rQ solid and begins to shrink as it cools.

(-lami/ritoshi"C alumina with molten metal 1., -C casting 1.
The υ tensile coefficient of the 3-H combination line is approximately 8 for aluminum.
＼Explosion O-6, nail j iron (d approx. 10~II X 1O-6f
In some cases, the shrinkage '8g1 becomes larger on the εJ3 iron side. , cast iron 1 (the crystallinity is around 11θθ'C, so 7J&
It seems that the contraction force starts working near the end of 1W417.
L.

Follow A (force f no 11. f is 1 degree e with
From 1st place to 1st year, the force of compression and bending is felt.

After placing the ceramic between /v T , +'iii, /
3 back right/3. Since the right &=j imaginary Tano arises, correspondingly, the state of ・Grance's とノ'l/C or the state of Ushi ・Shiru occurs. ,1
In the high range, metal is plastic 1 (4-easy to deform, 7 easy to deform, high for ceramics), rigid - 1'1, so ceramic (bow 1. broken) does not flame. The stress is likely to be affected by II "2".

In this state, the temperature is always 11゛, - cool down)L, then (d
) As shown in (a), the necessary parts are removed by physical or chemical methods.

``Like a human-L soil'', ゛. Is it possible to easily combine ceramic and molten metal by combining them?
,.

At the end of this step, use a scale to remove unnecessary parts.

-Some kind of abnormality has occurred in the cash register ζ22 layer” 7! I-
t, -, ct) is at room temperature (= 1 near -4, oh no) z,
Part...With the lance in place, the stress is relieved as much as possible by 6J -4.

At this stage, I'm a little stressed...7.I'm facing a fatal problem.
It is presumed that there is no d) force).

Figure 2 is ceramic, Nox 1 River - 1 figure on the inner surface, 7 is.

Three 7 are on the outer surface, and FIG. 4 is an explanatory diagram in the case where the molten metal is composited on the ceramic compound decahedron.

142 ~ 3 - (1) is 1 piece of seven Uminox, (2
) is cast metal. In (1), the cast metal is wrapped in the cast metal and the casting is done so that the outer metal in the case of Fig. 2 is removed, and the inner metal in Fig. 3 is removed.

In the case of Fig. 4, especially complex stress component Ib is predicted #IJ
Even in the case where h is easily 714, it can be compounded without any problem.

Next, the present invention will be explained by examples.

Example 1 Aluminum ram was composited on the inner surface of an alumina ceramic sleeve using a method as shown in FIG.

The 15 construction conditions are as follows.

Mold Mold (preheating temperature 50θ°C) Aluminum sleeveless preheating temperature 650°C Aluminum 11 Q
Including 7fl, after casting at 750°C, slowly cooled at room temperature/
child.

The corrugated portion on the outer surface of the ceramic was removed by turning.

There were no cracks or the like in the sleeve, and the molten metal filled the microscopic gaps in the sleeve, resulting in a completely adhered structure.

On the other hand, as with the conventional force method, molten metal was injected only into the joint surface.
There is a crack in the sleeve part of this item.

Through this, the effects of the present invention can be fully recognized/
child.

As described in detail above, the present invention allows molten metal to be integrally laminated onto a ceramic sintered body, and greatly contributes to the production of composite materials that have the characteristics of both metal and ceramic.

[Brief explanation of drawings]

1 to 4 are explanatory diagrams of the method of the present invention. Figure 1 shows a flat ceramic plate, Figure 2d shows a ceramic sleeve inner surface, and Figure 3 shows an explanatory diagram when molten metal is composited on the outer surface of a sleeve.Furthermore, Figure 4 shows an explanatory diagram of a complex-shaped product. .

Claims (1)

[Claims] When producing a laminated structure of ceramic and cast metal by casting molten metal, it is possible to transfer the stress/gain generated during solidification and cooling of the metal to the joint surface of the ceramic to the surface opposite the joint surface. Features: A method for manufacturing a cellar and metal laminated structure.