JPS61132282A - Method for joining amorphous alloy to metallic body - Google Patents

Abstract

PURPOSE:To join an amorphous alloy to a metallic body easily and surely by performing an explosive welding with placing a metallic body on a Pd amorphous alloy and charging a gun powder on the metallic body. CONSTITUTION:The Pd amorphous alloy 2 of ultrathin strip is placed on a sand base 1 and the metal substrate 3 of pure metals of Fe, Ti, Ni, etc. and iron base, non-ferrous base alloy, etc. is placed at the prescribed intervals on the alloy 2. The spacer 4 of a paper, etc. for instance is provided on both end parts of the upper face of the Pd amorphous alloy 2 to form the gap. The necessary quantity of gun powders 5 is charged on the metal substrate 3 and the one side is made as an explosion point 6, then. With exploding this gun powder 5 the metal substrate 3 and Pd amorphous alloy 2 are subjected to an explosive welding. When the Pd amorphous alloy 2 is completed in joining with one face of the metal substrate 3, Pg amorphous alloy 2 is joined on the other face with the same procedures with turning over the substrate 3.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method of joining an amorphous alloy to a metal body.

Conventional technology Pd-based amorphous alloys have excellent chlorine generation catalytic ability and high overvoltage in a chlorine electrolysis environment, and are suitable for use with conventional Pt plated electrodes or noble metal alloys such as Pt, Zn, and Rh, and their oxidation. It has significantly superior corrosion resistance compared to physical electrodes. Therefore, if a Pd-based amorphous alloy is applied to electrodes for chlorine-generating electrolysis, it will greatly contribute to improving the productivity of electrolysis equipment manufacturers and saving energy. However, since the Pd-based amorphous alloy is an ultra-thin ribbon of approximately 50 μm, there are problems in terms of strength and structure, and it cannot be applied to electrodes in the form of an ultra-thin ribbon. Therefore, Fe, Ti,
Metal bodies such as pure metals such as Ni, iron-based alloys, and non-ferrous-based alloys K Pd
It is conceivable to join amorphous alloys, but laser bath welding, ultrasonic welding, friction welding, etc. have been proposed for joining amorphous alloys.

Problems to be Solved by the Invention However, although all of the above methods are being intensively researched, the current situation is that they have not yet reached the stage of practical application.

The purpose of the method of the present invention is to solve these problems and provide a method for joining an amorphous alloy to a metal body that can be put to practical use.

Means for Solving the Problem In order to solve the above problem, the method of joining a non-quality alloy to a metal body according to the present invention involves placing an ultra-thin strip of Pd-based amorphous alloy on a sand table, and Fe, Ti,
Place a metal body such as pure metal such as Ni, iron-based alloy, or non-ferrous-based alloy,
Gunpowder was filled onto the metal body, and then the gunpowder was exploded to perform t-explosion welding between the metal body and the Pd-based amorphous alloy.

Example An embodiment of the method of the present invention will be described below with reference to the drawings.

As shown in Figure 1, first place an ultra-thin strip of P on the sand table (1).
Place the d-based amorphous alloy (2). Pd-based amorphous alloy (2
) There are methods such as a single roll method and a twin roll method, but the details are omitted because they are not directly related to the method of the present invention. It is appropriate to clean both the front and back surfaces of the Pd-based amorphous alloy (2) by washing it with acetone or the like before placing it on the sand table (1).

Next, Fe, Ti,
Metal substrates such as pure metals such as Ni, iron-based alloys, and non-ferrous-based alloys (3)
Place them with a specified gap (approximately 1 fr/cm) between them. To form a gap, a substrate 4j'' (4) made of paper, for example, is provided on both sides of the top surface of the Pd-based amorphous alloy (2).The metal substrate (3) to be used is processed by paper processing ( 200-100
0), it has been found from experiments that the bonding property with the Pd-based amorphous alloy (2) is good.

Next, the required amount of gunpowder (5) tl- is placed on the metal substrate (3).
Fill it and set it as -sidetone firing point (6).

The gunpowder (5) is then exploded to explosively weld the metal substrate (3) and the Pd-based amorphous alloy (2). That is,
The metal substrate (3) and the Pd-based amorphous alloy (2) are bonded together using explosive force. ,
- Since the sand table (1) is used, the Pd-based amorphous alloy (2) can be deformed with a certain degree of freedom.

Pd-based amorphous alloy (2) t- on one side of the metal substrate (3)
When the bonding is completed, as shown in Fig. 2, turn the metal substrate (3) over and apply the Pd-based amorphous alloy (2) t- to the other side using the same procedure.
Join. In this case, the joined Pd-based amorphous alloy (2)
Although the gunpowder (5) is completely filled directly on top of the metal base plate (3), it will not come off from the metal base plate (3) due to an explosion.

After the bonding is completed, the specimen is machined to the specified dimensions, and its surface is activated to form an electrode for chlorine electrolysis.

In addition, as shown in Figure 3, the outer peripheral surface of the specimen has a diameter of 7.
).

Figures 4 and 5 show the case of manufacturing wide electrodes. That is, the Pd-based amorphous alloy (2) is placed on a sand table (1).
mutually inclined surfaces (8) formed at the ends when placed on top of each other;
(9) t Make them overlap. The rest of the procedure was as described above.

The corrosion resistance of the electrode for chlorine electrolysis manufactured by the above method is as follows:
It has been confirmed through experiments that it is about 10 times better than conventional Pt plated electrodes.

Effects of the Invention According to the method of the present invention, an amorphous alloy can be easily and reliably joined to a metal body. Therefore, it can be fully put into practical use.

[Brief explanation of the drawing]

The drawings show one embodiment of the method of the present invention, and FIGS. 1 and 2 are side views showing an example of the arrangement before explosive welding of a Pd-based amorphous alloy and a metal substrate, respectively, and FIG. FIG. 4 is a side view of the finished product, FIG. 4 is a side view showing an example of arrangement when obtaining a wide specimen, and FIG. 5 is a view taken along the line A--A in FIG. 4. (1)...-sand table, (2)...Pd-based amorphous alloy, (
3)... Metal substrate, (5)... Gunpowder agent Yoshihiro Morimoto Figure 1 Figure 3 Figure 4 8r9)

Claims (1)

[Claims] 1. Place an ultra-thin strip of Pd-based amorphous alloy on a sand table, and place metal objects such as pure metals such as Fe, Ti, and Ni, iron-based, and non-ferrous-based alloys on top of this Pd-based amorphous alloy. and filling the metal body with gunpowder, and then detonating the gunpowder to explosively weld the metal body and the Pd-based amorphous alloy. How to join.