JPS61104038A - Lightweight wear resistant member - Google Patents

Abstract

PURPOSE:To obtain a lightweight wear resistant member having superior wear resistance and lubricity by incorporating an intermetallic Ni-Sn compound into an Ni-base metallic structure having a three-dimensional network structure and by filling an Al alloy into the voids in the metallic structure. CONSTITUTION:An Ni-base metallic structure having a three-dimensional network structure is coated with Ni and Sn and heat treated to form an Ni-base metallic structure contg. an intermetallic Ni-Sn compound and having a three- dimensional network structure. An Al alloy is filled into the voids in the metallic structure by casting under high pressure, and the structure is subjected to soln. heat treatment and heat treatment to manufacture a wear resistant member.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a lightweight wear-resistant member useful as a material for sliding parts, ** parts, bearings, engine parts, etc.

<Prior Art> Sliding parts, friction parts, bearings, etc. are parts that require properties such as thermal shock resistance, corrosion resistance, and wear resistance.

Conventionally, materials for such parts include Fe alloys and M
Alloy systems are mainly used, and research is also progressing on composites of N alloys and carbon fibers, silicon carbide sheets, etc.

<Problems to be solved by the invention> Among the conventional materials mentioned above, the F@alloy system is itself heavy, making the entire device heavy, and it is necessary to obtain sufficient strength to rotate at high speed. Therefore, there was a problem in that the weight of peripheral members also increased.

Further, although N-alloy systems or composites of N-alloys and carbon fibers are preferable in terms of their light weight, they have a disadvantage of poor wear resistance, and improvements in this respect are desired.

Means for Solving the Problems In view of the above, this invention was obtained as a result of studies to obtain a member that is lightweight and has excellent wear resistance. To obtain a member having a structure in which at least an intermetallic compound of Ni and Sn is contained in a metal structure having an original network structure, and the voids existing in this structure are filled with an alloy mainly composed of Al. This has led to the creation of a lightweight wear-resistant member that is effective in both wear resistance and r-lift performance.

<Function> The structure of the lightweight wear-resistant member of the present invention is as shown microscopically in FIGS. In order to install such a structure only in areas where sliding is expected,
The required amount of three-dimensional mesh metal structures may be placed in advance at the required locations before N alloy casting.

Example of implementation Next, the present invention will be explained using examples.

Example 1 The surface of a urethane foam resin was coated with carbon or the like to conductivity treatment, and then a three-dimensional network structure of Ni was generated.

Then, convert this structure to N= C1□ 6H202509/IIS++Cf
2 2HaO50? /Men NH and H et al.
Ni and Sn were coated with a H2.5 plating solution at a bath temperature of 65°C and a current density of 0.3 A/d, and then h
u Heat treated N containing Ni and 3 frost intermetallic compounds,
A three-dimensional network structure was obtained.

After that, 1000% of N alloy of AC4G composition was applied to this structure.
ICI! 4, the voids of the structure were filled with N alloy, followed by solution treatment at 510°C for 8 hours and heat treatment at 160°C for about 6 hours to produce a wear-resistant member. did.

The structure of the member obtained in this example is shown in FIG. 1, where 1 is a three-dimensional network structure of Ni containing an intermetallic compound 7 of Ni and Sn (not shown), and 2 is the N alloy filling the void.

Example 2 In the same manner as in Example 1, Ni and S were prepared as shown in FIG. 2A.
A three-dimensional network structure 1 mainly containing an intermetallic compound 7 (not shown) of ,
N alloy of AC4G composition was cast under high pressure and filled into the voids of the structure. 2 in FIG. 2B is the filled N alloy layer.

Thereafter, the Ni layer plated on the outer layer of the structure was reacted with the N alloy by quenching at 510° C. and heat treated at 160° C. to form an intermetallic compound 4 containing N and Ni as main components inside the structure. Ta.

Example 3 The three-dimensional network structure 5 of the tissue structure shown in FIG. Sl to the extent that
After providing the plating layer 6, heat treatment is performed at the melting point temperature of S++ to form an intermetallic compound 7 made of Ni and Sn as shown in FIG. 3B on the surface of the skeleton of the two-dimensional network structure of N1. After that, N alloy of AC4G composition was cast under high pressure, and the voids of the structure were filled with N alloy 2 as shown in FIG. 3C.

This was quenched at 520''C and heated and held at 170°C to distribute an intermetallic compound 4 of Ni and M, which is a metallic compound of Ni and Sn, in the structure.

The wear-resistant members of the present invention obtained in Examples 1 to 3 above were
Ig! using an Okoshi type wear resistance tester with N castings of A040 composition (Comparative Example 1) and AC8AC10Mu products (Comparative Example 2) as comparative quantities. The results are shown as a ratio when the wear amount of Comparative Example 1 is set to 1.

Table 1: Effects> From the table above, it was recognized that the wear-resistant member of the present invention had a much lower wear ratio than the comparative example, indicating excellent wear resistance.

As described above, the wear-resistant member of the present invention is lightweight and can be applied only to areas where wear resistance is particularly required. Since it has properties, wear resistance can be particularly improved. Furthermore, this wear resistance can be significantly improved by coexisting an intermetallic compound of Ni and Sn and an intermetallic compound of Ni and N.

A wear-resistant member having such characteristics can be used for sliding wear-resistant members, engine parts, bearings, and the like.

[Brief explanation of drawings]

FIGS. 1 to 3 are all schematic diagrams showing the structure of the wear-resistant member of the present invention. 1.5...Three-dimensional network structure mainly composed of Ni 2.
...N alloy layer 3...Ni plating layer 4...Ni and N intermetallic compound layer 6...Sn plating layer

Claims (4)

[Claims] (1) At least an intermetallic compound of Ni and Sn is contained in a metal structure with a three-dimensional network structure mainly composed of Ni, and the voids existing in this structure are filled with an alloy mainly composed of Al. A lightweight, wear-resistant member with a durable structure. (2) A three-dimensional network structure metal structure mainly composed of Ni contains an intermetallic compound of Ni and Sn as well as an intermetallic compound of Ni and Al. Lightweight and wear-resistant material. (3) A metal structure having a three-dimensional network structure mainly composed of Ni has a Ni layer on the outer periphery of its skeleton.
The lightweight wear-resistant member according to item 1 or 2. (4) The lightweight and wear-resistant metal structure according to any one of claims 1 to 3, wherein the metal structure with a three-dimensional network structure mainly composed of Ni has a Sn layer on the outer periphery of its skeleton. sexual parts.