JP3443336B2 - Abrasion resistant member, method for producing the same, and aluminum alloy powder used therefor - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wear resistant member having a coating layer of an aluminum alloy having excellent wear resistance, which is used for sliding parts (air conditioners, engines, bearing parts, etc.) of automobiles.

[0002]

2. Description of the Related Art A wear resistant member made of an Al--Si alloy used for a sliding member is disclosed in JP-A-53-149832.
There is a wear resistant member described in Japanese Patent Laid-Open Publication No. 2003-242242, which is obtained by spraying an Al-Si alloy spray material. This Al-Si based alloy thermal spray material is an Al-Si based alloy containing 6 to 11% by weight of Si and Sn and Pb as additional components.

Further, Japanese Patent Application Laid-Open No. 2-70036 discloses that
Self-lubricating agent (Sn, MoS ₂ , Ca
A bulk composite material containing ₂ to 20 vol% of F ₂ etc. is disclosed. Here, alloy powder containing 5 to 35% by weight of Si is used as the Al-Si alloy. This alloy is produced by sintering raw material powder (cold compression molding, then hot press molding) and then hot extrusion. As the raw material powder, for example, a rapidly solidified powder manufactured by using a gas atomizing method or the like is used.

[0004]

However, the wear-resistant member described in JP-A No. 53-149832, which is sprayed with the Al-Si alloy sprayed material, has a Si content in the Al-Si alloy sprayed material. The amount was small and sufficient abrasion resistance was not obtained. Further, in the thermal spraying in the production of the wear resistant member, since it was cooled at the solid cooling rate, Si was supersaturated in the Al matrix to form a solid solution, and the amount of crystallized Si was small.

The bulk composite material described in Japanese Patent Application Laid-Open No. 2-70036 uses an alloy powder containing 5 to 35% by weight of Si. However, since the composite material contains a self-lubricating agent, it is actually used. In addition, the amount of Si contained in the composite material was small. The present invention is applied to solid solution and precipitation strengthening of aluminum base.
Large amount in Al matrix with improved mechanical properties
It is an object of the present invention to provide a wear resistant member using a high Si Al-Si alloy in which the finely crystallized Si is dispersed .

[0006]

In order to solve the above-mentioned problems, the inventors of the present invention have proposed a high Si Al used for a wear resistant member.
-Study on the Si-based alloy was repeated. Si has a high hardness (Hv: 1000) and has wear resistance by itself, but it is brittle, so it is easily chipped during cutting or sliding. If chipped, Si particles promote wear of the mating material such as a tool. there were. Therefore, the Si particles in the Al matrix have a small particle size.
Moreover, it was necessary to firmly fix it in the Al matrix .

Therefore, S contained in the wear resistant coating member
It has been found that the above problems can be solved by controlling the particle size of the i particles and controlling the alloy composition of the Al matrix to form a strong Al alloy. That is, the wear resistant member of the present invention, a metal substrate and a wear resistant coating member formed integrally with the metal substrate surface, made of wear-resistant coating member 3
6 to 70 % by weight of silicon (Si), 0.05 to 10% by weight of magnesium (Mg) and 0.5 to 10% by weight of copper (Cu), and optionally other additive components. And the balance consists of aluminum (Al) and unavoidable impurities, and the matrix contains 3% by weight of a part of Si.
Formed from solid-solved aluminum, the rest of Si is in the form of fine particles and has an average particle size of 0.01 μm to 10 μm.
It is characterized by having a composition dispersed in the matrix in the range of less than.

In the wear resistant member of the present invention, the wear resistant coated member integrally formed on the surface of the metal substrate is 36 to 70 % by weight of silicon (Si) and 0.05 to 10% by weight of magnesium. (Mg) and at least one of 0.5 to 10% by weight of copper (Cu), and optionally other additive components, the balance being aluminum (Al) and inevitable impurities, and the matrix being one of Si. Characterized in that the remaining part of Si is fine particles and has an average particle size of 0.01 μm or more and less than 10 μm dispersed in a matrix. .

Si contained in the wear resistant coating member is 36
˜70 % by weight. When the content of Si is less than 36% by weight, the amount of Si crystallized and the wear resistance are reduced. The Si content is preferably 36% by weight or more. Further, when Si exceeds 70% by weight, when used as a sliding member, the aggressiveness against the mating material exceeds the allowable limit and becomes large. The wear resistant coating member is composed of an Al matrix in which a part of Si is 3% by weight or more. Since 3% by weight or more of Si is solid-dissolved, the hardness is improved and the wear resistance is improved.

The average particle size of the Si fine particles dispersed in the matrix is 0.01 μm or more and less than 10 μm. When the average particle diameter is 10 μm or more, when the wear resistant member is used as the sliding member, the aggression against the mating material increases.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION (Abrasion Resistant Member) This member further contains at least one of Mg and Cu.
Mg is 0.05 to 10% by weight . Also, Cu is
It is 0.5 to 10% by weight . By incorporating at least one of Mg and Cu, to contribute to solid solution and precipitation strengthening in the aluminum base, to improve the mechanical properties of the alloy. This not only improves the hardness of the alloy itself, but also prevents fine Si from falling off during sliding. Included in Mg
The percentage is less than 0.05% by weight , the Cu content is 0.5 %
If the amount is less than% , the strengthening effect is small, and both Mg and Cu are 10
If it exceeds the weight percentage, the alloy becomes brittle.

Other additives are 4A group, 5A group, 6A
One or more elements selected from Group 7, 7A and 8
The total amount is preferably 0.05 to 15% by weight. Here, these elements improve the strength of the Al base. In particular, the elements of Groups 4A to 8 have a slow diffusion rate in aluminum, and therefore the heat resistance of the alloy is remarkably improved. If the total content of these contents is less than 0.05% by weight, the effect of improving the strength is small, and if it exceeds 15% by weight, the alloy becomes brittle. Further, it is preferable that the total content including the additive components other than silicon does not exceed 15% by weight.

As elements of the 4A to 8 groups, considering cost, the 4A group includes titanium (Ti) and zirconium (Z).
r), hafnium (Hf), 5A group is vanadium (V), niobium (Nb), tantalum (Ta), 6A group is chromium (Cr), molybdenum (Mo), tungsten (W), and 7A group is manganese (Mn). ), Group 8 is iron (F
e), cobalt (Co), and nickel (Ni) are preferable.

The other additive component is at least one of Sn and Pb, and the total amount thereof is preferably 0.1 to 20% by weight. These elements act as a lubricating component of the Al-Si alloy, and have the effects of improving workability and preventing seizure when used as a sliding member. If the content is less than 0.1% by weight, the machinability cannot be expected to be improved. On the other hand, if it exceeds 20% by weight, the strength and wear resistance of the Al-Si alloy are reduced.

As the metal substrate, a metal material having a large thermal conductivity may be used in order to increase the cooling rate of the molten metal during the production of the wear resistant coating member, and among them, an aluminum substrate having a large thermal conductivity is preferable. The average particle size of the Si fine particles in the wear resistant member of the present invention is, for example, observed at a high magnification (× 1000 or more) by observing a mirror-polished surface of an alloy with an optical microscope or a scanning electron microscope. The result can be measured by making an image and analyzing the image. Further, the Si solid solution rate in the Al matrix in the wear resistant coated member of the present invention was determined by the X-ray intensity ratio (X-ray intensity of Si / X-ray intensity of Al) and image analysis of the alloy structure.

The wear-resistant member of the present invention is, for example, a compressor for an air conditioner of an automobile, a power steering,
Used for sliding parts such as engines. (Production method of wear resistant member) The production method of the wear resistant member of the present invention comprises:
36 to 70 % by weight of silicon (Si) and 0.05 to 10
Wt% magnesium (Mg) and 0.5-10 wt%
Aluminum alloy containing at least one of copper (Cu) and optionally other additive components, and the balance consisting of aluminum (Al) and unavoidable impurities is sprayed and solidified on the surface of the metal substrate to be resistant. It is a method of forming an abradable covering member.

In this manufacturing method, the aluminum alloy sprayed on the surface of the metal substrate is rapidly solidified by the metal substrate. For this reason, the time during which the Si particles crystallized in the aluminum alloy grow is shortened, Si is dispersed as fine particles in the aluminum alloy, and a part of Si dissolves in the Al matrix in an amount of 3% by weight or more. That is, when the sprayed aluminum alloy is gradually cooled, coarse Si particles are generated in the metal structure, and the aggressiveness of the sliding member to the mating material is increased. Texture (fine Si
Particles).

For the metal substrate, in order to increase the cooling rate of the molten alloy, a metal material having large heat conductivity may be used, and among them, an aluminum substrate having large heat conductivity is preferable.
Here, as the metal substrate, a substrate made of a metal material such as copper or iron may be used. In the case of the thermal spraying method, it is advisable to form a thermal sprayed film on the surface that has been mechanically ground and blasted in order to ensure adhesion.

As a method of forming a wear resistant coating member which retains the metal structure of an aluminum alloy, there is a thermal spraying method in which molten metal is sprayed and deposited. Here, the thermal spraying method is preferably plasma spraying or flame spraying. In addition, the manufacturing method of the wear resistant member is as follows.
0.05 to 10% by weight, copper (Cu) 0.5 to 10% by weight, and optionally other additive components, and the balance Al.
And an aluminum alloy powder consisting of unavoidable impurities is arranged, the aluminum alloy powder is heated and melted by a laser for a short time, and then cooled and solidified by a metal substrate to form a wear resistant coating member on the metal substrate. is there.

In the present manufacturing method, the aluminum alloy powder arranged on the surface of the metal substrate is heated and melted in a short time, and thereafter, by heat conduction having a large heat capacity on the surface of the metal substrate.
Rapid cooling, that is, rapid solidification, shortens the growth time of Si particles crystallized in the aluminum alloy, and Si is dispersed as fine particles of less than 10 μm in the aluminum alloy. Also in the present manufacturing method, the metal substrate is preferably an aluminum substrate.

Further, in the production of the wear-resistant member, if the thermal expansion coefficient of the metal substrate and the wear-resistant coated member are different from each other, under an environment where a heat cycle is performed after the coating treatment or when the wear-resistant member is used. Problems such as peeling of the wear-resistant coating member are expected when used, but in such a case, wear resistance with a graded composition that controls the composition ratio of silicon in the wear-resistant coating member Such a trouble can be prevented by using the covering member.

That is, by utilizing the fact that the coefficient of thermal expansion becomes relatively small when the amount of silicon in the wear resistant coating member is large, the coefficient of thermal expansion in the vicinity of the metal substrate is adjusted so as to approach the coefficient of thermal expansion of the metal substrate to be used. It is preferred to vary the amount of silicon in the abradable coating member. The wear-resistant coated member of the present invention formed by the thermal spraying method or the laser clad method is finished on a mechanically ground surface or a polished surface, and is a sliding part of an automobile (for example, a compressor part, an engine part or a bearing material).
It can be used for machine parts.

(Aluminum alloy powder) The aluminum alloy powder of the present invention comprises 36 to 70 % by weight of silicon (Si), 0.05 to 10% by weight of magnesium (Mg) and 0.5 to 10% by weight of copper. At least one of (Cu) and optionally other additive components, and the balance consisting of aluminum (Al) and inevitable impurities,
A powder produced by a gas atomizing method or a water atomizing method, the average particle diameter of which is in the range of 1 to 200 μm, and the Si particles in the particles have an average particle diameter of 0.01 to
An aluminum alloy powder having a range of 20 μm.

The average particle size of the Si fine particles is 0.01 to 20.
It is in the range of μm. When the average particle size is 20 μm or more,
When the aluminum alloy powder is sprayed, the Si particles do not sufficiently dissolve in the aluminum alloy. When the Si particles are not sufficiently melted, coarse Si particles are generated in the sprayed aluminum alloy. When coarse Si particles are generated, the wear resistance of the wear resistant member using the aluminum alloy sprayed film is lowered.

The average grain size of the aluminum alloy powder of the present invention is in the range of 10 to 200 μm. When the average particle size of the aluminum alloy powder is 200 μm or more, the average particle size of the Si particles dispersed in the powder is 20 μm or more, which is not preferable as described above. The particle size of the aluminum alloy powder is preferably within the range of 10 to 100 μm.

The content of Si in the aluminum alloy powder of the present invention is 36 to 70 % by weight. The amount of this Si compound is
If it is less than 36 % by weight, the amount of primary crystal Si crystallized when the aluminum alloy powder is sprayed decreases, and the wear resistance of the aluminum alloy sprayed film decreases. On the other hand, if it exceeds 70 % by weight, the aggression of the wear resistant member having the aluminum alloy sprayed film against the mating material exceeds the permissible limit and becomes large. Therefore, the preferable blending amount is 36 to 70 % by weight.

The other essential component is at least one of 0.05 to 10% by weight of Mg and 0.5 to 10% by weight of Cu.
Is. The addition of Mg and / or Cu improves the mechanical properties of the alloy due to the solid solution and precipitation strengthening of the aluminum matrix. This not only improves the hardness of the alloy itself, but also prevents fine Si from falling off during sliding. For Mg, the content is less than 0.05% by weight , for Cu,
If the content is less than 0.5% by weight , the strengthening effect is small,
If both Mg and Cu exceed 10% by weight, the alloy becomes brittle.

Other additives are 4A group, 5A group, 6A
One or more elements selected from Group 7, 7A and 8
The total amount is preferably 0.05 to 15% by weight. Here, these elements improve the strength of the Al base. In particular, the elements of Groups 4A to 8 have a slow diffusion rate in aluminum, and therefore the heat resistance of the alloy is remarkably improved. If the total content of these contents is less than 0.05% by weight, the effect of improving the strength is small, and if it exceeds 15% by weight, the alloy becomes brittle. Further, it is preferable that the total content including the additive components other than silicon does not exceed 15% by weight. Four
As the elements of the A to 8 groups, considering the cost, the 4A group includes titanium (Ti), zirconium (Zr), hafnium (Hf), and the 5A group includes vanadium (V) and niobium (N).
b), tantalum (Ta), 6A group is chromium (Cr), molybdenum (Mo), tungsten (W), 7A group is manganese (Mn), 8 group is iron (Fe), cobalt (Co),
Nickel (Ni) is preferred.

The other additive component is at least one of Sn and Pb, and the total amount thereof is preferably 0.1 to 20% by weight. These elements act as a lubricating component of the Al-Si alloy, and have the effects of improving workability and preventing seizure when used as a sliding member. If the content is less than 0.1% by weight, the machinability cannot be expected to be improved. On the other hand, if it exceeds 20% by weight, the strength and wear resistance of the Al-Si alloy are reduced.

The aluminum alloy powder of the present invention is preferably a powder composed of spherical particles. The spherical particles improve the fluidity of the alloy powder and facilitate the thermal spraying during the production of the wear resistant member. In the aluminum alloy powder of the present invention, the Si particles in the particles are 1
It is welded to the surface of the wear-resistant member in the state of a fine structure of less than 0 μm to form a wear-resistant coated member. That is, the aluminum alloy powder of the present invention, when forming the wear-resistant coating member of the wear-resistant member surface, the wear-resistant member surface by a manufacturing method that is melted and solidified in a short time such as a thermal spraying method or a laser clad method. Is welded to.

[0031]

EXAMPLES The present invention will be described below with reference to examples. (Production of Aluminum Alloy Powder) As an example of the present invention, an aluminum alloy powder having the composition shown in Table 1 was produced. In addition, these aluminum alloy powders are contained in a powder particle size range of 45 to 106 μm.

This aluminum alloy powder is prepared by melting an aluminum alloy adjusted to a predetermined composition and pulverizing it by a gas atomizing method, and then sieving the aluminum alloy powder so that the powder particle size falls within the range of 45 to 106 μm. And aluminum alloy powder.

[0033]

[Table 1] (Production of Wear Resistant Member) The aluminum alloy powder of the example was formed into a film having a thickness of 0.3 mm by a plasma spraying method, and then the film was polished to obtain a surface roughness Rz of 1.0 μm.
The following wear resistant members were produced.

Here, the substrate is an aluminum plate A20.
17 was used. Plasma spraying is performed in a room temperature atmosphere with a sprayer manufactured by Mirror Thermal Co., Ltd., and the spraying distance is 1
50 mm, the spray output was 30 KVA. In this manufacturing method, when the sprayed aluminum alloy comes into contact with the substrate at room temperature, it is rapidly cooled to the temperature of this substrate and solidified. By this rapid solidification, growth of Si particles is suppressed in the sprayed aluminum alloy, and a metal structure dispersed as fine particles of less than 10 μm in the aluminum alloy is retained.

(Evaluation of Wear-Resistant Member) As an evaluation of the wear-resistant member, a ball-on-disk test was conducted. As Comparative Example 1, 17 wt% Si, 5 wt% Cu, Mg
Was used as a wear-resistant member prepared by spraying an aluminum alloy having 0.5% by weight and the balance being Al on the aluminum substrate after powderizing in the same manner as in the example. The composition of Comparative Example 1 is also shown in Table 1.

(Ball-on-disc test 1) As shown in the schematic view of FIG. 1, in the ball-on-disc test, the abrasion-resistant member was rotated with the ball pressed against the sample of the abrasion-resistant member, and after sliding, It is a test that is used as a scale for evaluation of wear resistance by measuring the maximum wear depth of the wear resistant member of. This test was carried out under the conditions of no lubrication in the air, sliding at 0.2 m / s, and the time of one hour. The balls are made of bearing steel SUJ2 with a diameter of 6.35 mm and
It is pressed against the wear resistant member with a load of 74 gf.
The test results are shown in Table 2.

[0037]

[Table 2] From Table 2, Examples 1 3 By including Si 3 6 wt% or more, the wear depth in comparison with the comparative example is equal to or less than half. Further, in Examples 2 to 3 with high Si, the wear depth is small and the wear resistance is significantly improved.

Further, as shown below, comparative examples of different materials were prepared and used as comparative examples for evaluation of the wear resistant member of the present invention. (Comparative Example 2) In this comparative example, an aluminum substrate (A505
In 2), an anodic oxide film having a thickness of 30 μm is formed.

Comparative Example 3 This comparative example is a sample in which Sn plating was formed on an aluminum substrate (A390) to a thickness of 1 μm. Comparative Example 4 This comparative example is a sample made of a bearing steel substrate (SUJ2).

(Comparative Example 5) This comparative example is a sample made of a sintered material in which Cu is 10% by weight, Pb is 10% by weight, and the balance is Cu. Comparative Example 6 This comparative example is a sample made of cast iron (FC25).

Comparative Example 7 This comparative example is a sample obtained by die casting an alloy having the same composition as the aluminum alloy used in Comparative Example 1. (Ball-on-disc test 2) The ball-on-disc test was performed on the samples of Example 2 and Comparative Examples 1 to 7. In this test, the balls pressed against the samples of the examples and the comparative examples were SUJ2 and A.
It was performed using two types of balls consisting of 2017. Here, the test conditions are the ball-on-disk test 1 described above.
Was done under similar conditions. In this test, the wear diameter of the ball was measured in addition to the maximum wear amount of the wear resistant member measured in the ball-on-disk test 1, and this wear diameter was used to evaluate the opponent attack of the wear resistant member. It was used as a standard.

The measurement results of the ball-on-disk test 2 are shown in FIGS. 2 and 3 in which the wear depth is plotted on the horizontal axis and the ball wear diameter is plotted on the vertical axis. FIG. 2 shows the measurement results when a ball made of SUJ2 was used, and FIG. 3 shows a measurement result when a ball made of A2017 was used. 2 and 3, the wear-resistant member of this example has significantly improved ball wear diameter and wear depth, respectively, as compared with the samples of Comparative Examples 1 to 7. That is, the wear resistant member of the present invention has high wear resistance and low opponent attack.

(Observation of Metal Structure) Micrographs of the metal structures of the wear resistant members of Example 2 and Comparative Example 7 are shown in FIG. Here, Comparative Example 7 is an alloy obtained by casting an alloy having the same composition as the aluminum alloy used in Comparative Example 1. That is, S in the Al matrix
There is an alloy in which the grain size of i is not controlled.

FIG. 4 (a) is a photomicrograph of the metal structure of Example 2 , and FIG. 4 (b) is a photomicrograph of the metal structure of Comparative Example 7. In Comparative Example 7, the average grain size of Si primary crystals is 25 μm.
m, the average particle diameter of Si is 0.5 μm in Example 2.
It is well understood that it is very small compared to the comparative example product. (Measurement of Friction Coefficient) In the ball-on-disk test 2, the friction coefficient during sliding was also measured for the samples of Example 2 and Comparative Examples 6 and 7, and the measurement results are shown in FIG.

From FIG. 5, the friction coefficient of Comparative Example 1 is 0.6.
It is stable at about 0.5 after decreasing from about 0.4 to about 0.4. In Comparative Example 6, the friction coefficient increases with the increase of the sliding distance, and reaches a maximum of about 1.4. However, in the sample of Example 2 , the friction coefficient is stable at a low value around 0.2. This is because Example 2 has high wear resistance and therefore maintains the low opponent attack property of the Al alloy layer coated on the surface.

(Measurement of High Temperature Softening Property) Using the samples of Example 2 and Comparative Example 7, the high temperature softening property was measured. The measurement of the high-temperature softening property was carried out by setting the heating time constant in the atmosphere (1 hour) and examining the hardness when the heating temperature was changed. The measurement result at this time is shown in FIG. It can be seen from FIG. 6 that the heat resistance of Example 2 is higher than that of the sample of Comparative Example because the altitude is higher from the low temperature and the hardness is less decreased even when exposed to the high temperature. .

[0047]

The wear-resistant member of the present invention has an increased hardness and an improved wear resistance due to the solid solution of Si in the Al matrix in an amount of 3% by weight or more. Further, due to the increase in Si, the volume ratio of Si dispersed particles is increased, and the wear resistance and seizure resistance of the alloy itself are significantly improved. Further, since the Si grain size is fine, the wear of the mating material during sliding is small. This means that the tool is less damaged during cutting and the cutting powder during cutting becomes finer, so that the grinding and polishing steps are facilitated and the machinability is improved. A wear resistant member having a low coefficient of friction can be obtained by increasing the Si and decreasing the opponent attacking property. Further, the wear resistant member of the present invention has high high temperature softening resistance.

[Brief description of drawings]

FIG. 1 is a diagram showing a state of a wear test.

FIG. 2 is a diagram showing a result of a wear test when using SUJ2 balls.

FIG. 3 is a diagram showing a result of a wear test when an A2017 ball is used.

FIG. 4 is a diagram showing a metallographic structure of wear-resistant coating members of Example 3 and Comparative Example 7.

FIG. 5 is a diagram showing a friction coefficient value with respect to a sliding distance in a wear test.

FIG. 6 is a diagram showing measurement results of high temperature softening characteristics.

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kazuyuki Nakanishi Kazuyuki Nakanishi Nagachite-cho, Aichi-gun, Aichi Prefecture, Nagatogi 1 1st side street, Toyota Central Research Institute Co., Ltd. (72) Inventor, Fukushima Aoki, Aichi-gun, Nagakute-machi No. 41 Nagamoji Yokomichi 1 Toyota Central Research Institute Co., Ltd. (56) References JP-A-62-1851 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) C22C 21/02 B23K 26/00 C22C 28/00 C23C 4/06

Claims (9)

(57) [Claims] 1. A metal substrate and a wear-resistant coating member integrally formed on the surface of the metal substrate, wherein the wear-resistant coating member comprises 36 to 70 % by weight of silicon (S).
i) and 0.05 to 10% by weight of magnesium (Mg)
And 0.5 to 10% by weight of at least one of copper (Cu), and optionally other additive components, the balance consisting of aluminum (Al) and inevitable impurities, and the matrix containing a part of the Si. It is characterized in that it is formed of the aluminum in a solid solution of 3% by weight or more, and the rest of the Si is in the form of fine particles and has an average particle size of 0.01 μm or more and less than 10 μm dispersed in the matrix. Abrasion resistant member. 2. The other additive component is a 4A group, a 5A group,
The wear resistant member according to claim 1, wherein one or more elements selected from the 6A group, 7A group and 8 group, and the total amount thereof is 0.05 to 15% by weight. 3. The other additive component is at least one of tin (Sn) and lead (Pb), and the total amount thereof is 0.1 to 10.
The wear resistant member according to claim 1, wherein the wear resistant member is 20% by weight. 4. The wear resistant member according to claim 1, wherein the metal substrate is an aluminum substrate. 5. On the surface of the metal substrate, at least one of 36 to 70 % by weight of silicon (Si), 0.05 to 10% by weight of magnesium (Mg) and 0.5 to 10% by weight of copper (Cu). An aluminum alloy containing a seed and, if desired, other additive components, with the balance being aluminum (Al) and unavoidable impurities, is sprayed, and solidified on the surface of the metal substrate to form a wear-resistant coating member, The wear-resistant coating member has a matrix made of an aluminum alloy in which a part of Si is 3% by weight or more as a solid solution, and the rest of the Si is fine particles and has an average particle diameter of 0.01 μm.
A method for producing a wear-resistant member, characterized in that it is dispersed in a range of m or more and less than 10 μm. 6. The method for manufacturing a wear resistant member according to claim 5, wherein the metal substrate is an aluminum substrate. 7. The method for manufacturing an abrasion resistant member according to claim 5, wherein the thermal spraying is plasma spraying. 8. At least one of 36 to 70 % by weight of silicon (Si), 0.05 to 10% by weight of magnesium (Mg) and 0.5 to 10% by weight of copper (Cu) on the surface of the metal substrate. An aluminum alloy powder containing seeds and, if desired, other additive components, the balance being aluminum (Al) and unavoidable impurities, is placed, the aluminum alloy powder is heated and melted by a laser for a short time, and then the metal substrate To form a wear-resistant coating member on the metal substrate by solidifying above, and the wear-resistant coating member is formed in a matrix made of an aluminum alloy in which a part of Si is 3% by weight or more. The balance of Si is fine particles and the average particle size is 0.01μ
A method for producing a wear-resistant member, characterized in that it is dispersed in a range of m or more and less than 10 μm. 9. The method for manufacturing a wear resistant member according to claim 8, wherein the metal substrate is an aluminum substrate.