JP2008180138A - Sliding member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lightweight sliding member having both high strength and slidability. <P>SOLUTION: This sliding member is composed of a porous member 10 composed of foam metal or form ceramics, and a resin part 20 hardened by impregnating resin into a pore of at least a surface layer part 11 of the porous member 10, and is characterized in that a surface of the surface layer part 11 slidingly contacts with a mating material, or is composed of the porous member composed of the foam metal or the foam ceramics, and the resin part hardened by impregnating the resin into the pore of at least the surface layer part of the porous member and covering a surface of the surface layer part, and is characterized in that a surface of the resin part slidingly contacts with the mating material, and is lightweight by using the foam metal or the foam ceramics having porosity higher than a sintered body as the porous member. The foam metal and the foam ceramics are also superior in impregnating ability of the resin since the porosity is high and a pore diameter is large. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a sliding member used for a movable part of various devices such as a compressor.

  As an example of a sliding member used for a movable part of various devices, there is a hemispherical shoe having an outer surface that is disposed between a swash plate and a piston of a swash plate compressor and is in sliding contact with the piston and the swash plate. Patent Document 1 (see paragraph [0017], for example) discloses a metal shoe made of a base material made of an aluminum alloy having an entire outer surface plated with nickel. Since the base material of this shoe is made of an aluminum alloy, it is relatively light and has high rotational stability during driving. However, in recent years, there has been a demand for further downsizing and weight reduction of a swash plate compressor, and there is a need for a lightweight shoe capable of stable rotation control even when the swash plate is driven with high rotational torque. Not only the shoe but also the weight reduction of the sliding member is one of the important factors that lead to the improvement of the performance of the apparatus.

  Resin sliding parts that are reduced in weight by using resin instead of metal are also used. For example, Patent Document 2 discloses a resin sliding member made of a molded body of polybutylene naphthalene dicarboxylate resin containing graphite, molybdenum sulfide, polytetrafluoroethylene and the like. Advantages of using a resin for the sliding member include not only weight reduction of parts, but also a large degree of freedom in shape, excellent corrosion resistance, and quietness. However, since resin has low heat dissipation compared to metal materials, heat is not radiated well at sliding parts that generate heat by sliding, such as shoes of a swash plate compressor, and the sliding member itself is deformed. There is a risk that the sliding characteristics may deteriorate.

Patent Document 3 discloses a resin-coated sliding comprising a porous metal sintered layer deposited on a back metal, and a surface resin layer deposited and impregnated in the porous metal sintered layer. A material is disclosed. This sliding material is a composite material of a metal and a resin, and exhibits characteristics suitable as a sliding material, which are different from the properties of the metal and the resin as a single substance. In addition, since this sliding material has a porous metal sintered layer, it is excellent in heat dissipation. However, since the porosity of the sintered body is about 20 to 50% by volume, the weight of the composite material is reduced. The effect of is small. Furthermore, when the pore diameter is about 0.1 to 40 μm, the resin impregnation property is not good when the resin viscosity is high or the resin is a fiber reinforced resin. If the resin impregnation is not good, the pores of the sintered body may not be sufficiently impregnated, or depending on the type of fiber reinforced resin, the reinforcing fiber may not be impregnated into the sintered body. The characteristics cannot be obtained.
JP 2003-138287 A JP 05-117677 A JP 2000-141544 A

  As already described, the composite material of metal and resin has excellent characteristics desirable as a sliding member. However, in a composite material of a metal sintered body and a resin, the use of the sintered body may cause the problems described above, so that desired characteristics may not be obtained.

  In view of the above problems, an object of the present invention is to provide a sliding member that has a novel structure, is lightweight, and has high strength and slidability.

  That is, the sliding member of the present invention comprises a porous member made of a foam metal or a foam ceramic, and a resin portion formed by impregnating and curing a resin in the pores of at least the surface layer portion of the porous member, The surface of the surface layer portion is in sliding contact with the counterpart material.

  Further, the sliding member of the present invention includes a porous member made of foam metal or ceramic foam, and at least a surface layer portion of the porous member is impregnated with a resin and cured, and covers the surface of the surface layer portion. And the surface of the resin portion is in sliding contact with the mating member.

  In the sliding member of the present invention, the foam metal and the foam ceramic are different from a sintered body obtained by simply forming and sintering a raw material powder made of metal or ceramic.

  In the sliding member of the present invention, the porosity of the porous member is preferably 55 to 98% by volume, more preferably 80 to 98% by volume. The pore diameter of the porous member is preferably 50 μm to 3 mm, more preferably 100 μm to 3 mm.

  The porous member preferably has independent pores. The porous member may have continuous pores, and the resin part is preferably impregnated in the entire porous member.

  The sliding member of the present invention is a shoe of a swash plate compressor, and the porous member has a spherical surface portion in which one of the outer surfaces forms a convex spherical surface and a flat surface portion in which the other forms a substantially flat surface. A spherical crown shape is desirable.

  The sliding member of the present invention is lightweight because a foam metal or foam ceramic having a higher porosity than the sintered body is used as the porous member. In addition, since the foam metal and the foam ceramic have a high porosity and a large pore diameter, they have excellent resin impregnation properties.

  The sliding member of the present invention exhibits high strength because the cured resin exists in at least the pores of the surface layer portion of the porous member. On the other hand, the strength of the sliding member of the present invention tends to decrease as the porosity of the porous member increases. When a porous member having a high porosity is used, the strength of the sliding member is maintained by impregnating the entire porous member with resin. If the pores of the porous member are continuous pores (open pores), the entire porous member can be impregnated with resin. If only the surface layer portion of the porous member is impregnated with the resin, the pores of the porous member may be independent pores (closed pores).

  In the sliding member of the present invention, the surface of the surface of the porous member in which the pores are impregnated with the resin, or the surface of the resin portion that covers the surface of the surface layer is the sliding surface in sliding contact with the mating member. . This sliding surface is excellent in wear resistance and exhibits low friction. In addition, the portion (resin coating layer) that covers the surface of the surface portion of the resin portion is continuous with the resin that has been impregnated into the pores that open on the surface of the porous member and has been cured, and therefore has good adhesion to the porous member. Excellent.

  The sliding member of the present invention is suitable for a sliding portion of a swash plate compressor, particularly a shoe, because it has sufficient strength, is lightweight, and exhibits excellent heat dissipation.

  Hereinafter, the sliding member of the present invention will be described in detail with reference to FIGS. 1 to 4 are cross-sectional views each schematically showing an example of the sliding member of the present invention. FIG. 5 is a cross-sectional view schematically showing an example of the manufacturing method of the sliding member of the present invention.

  The sliding member of the present invention comprises a porous member and a resin portion formed by impregnating a resin in the pores of the porous member and curing.

  The porous member is made of foam metal or foam ceramic. Foam metal and ceramic foam have a high porosity and a large pore diameter among porous materials. In the sliding member of the present invention, the porosity of the porous member is preferably 55% by volume or more, more preferably 80% by volume or more. In addition, the porosity of the porous member is preferably 98% by volume or less from the viewpoint of the strength of the sliding member. The pore diameter of the porous member is preferably 50 μm or more, more preferably 100 μm or more, from the impregnation property of the resin impregnated in the pores. If the pore diameter is 50 μm or more, the resin is satisfactorily impregnated in the pores of the porous member even when the reinforcing fibers and solid lubricant described later are contained in the resin. As the porous member has a larger pore diameter, the impregnation property is improved, but the pore diameter is preferably 3 mm or less. When the pore diameter exceeds 3 mm, it is not preferable from the viewpoint of the strength of the sliding member. The porosity and pore diameter are calculated by, for example, mercury porosimetry pore distribution measurement (JIS R 1655).

  The pores of the porous member may be independent pores (closed pores) or continuous pores (open pores). In the case of independent pores, the resin is mainly impregnated into pores that open to the surface of the porous member. In the case of continuous pores, the resin may be impregnated only in the pores of the surface layer portion of the porous member, or may be impregnated not only in the pores of the surface layer portion but also the entire porous member. Therefore, in order to give strength to the sliding member, it is preferable to impregnate the whole porous member having continuous pores as small as possible in porosity.

  The porous member described above can be produced by a general method for producing foam metal and foam ceramic. For example, a method of blowing gas into the molten metal, a method of adding a foaming agent into the molten metal and foaming, a method of removing the plastic part after plating on the foamed plastic, a material with a low density such as a foam material or a hollow material Examples thereof include a method of compounding with metal or ceramics, a method of mixing a foaming agent with a raw material powder made of metal or ceramics, and sintering after the molding at a temperature near the gas generation temperature of the foaming agent.

  In addition, there is no limitation on the type of metal and ceramic, and if it is a metal, noble metal, noble metal alloy, aluminum, copper, nickel, titanium, molybdenum, tungsten, iron, cobalt, aluminum-based material, copper-based material, nickel-based material , Titanium materials, molybdenum materials, tungsten materials, iron materials, cobalt materials, magnetic alloys, cemented carbides, corrosion resistant alloys, heat resistant alloys, conductive alloys, superconducting alloys, sliding alloys, bearing alloys, anti-corrosion At least one selected from iron-based materials such as vibration alloys, hydrogen storage alloys, shape memory alloys, electrode alloys, intermetallic compounds, stainless steel, carbon steel, alloy steel, magnet steel, tool steel and high speed steel For seeds and ceramics, metal carbides and metal oxides, specifically silica, silica-alumina, silica-magnesia, silica-titania, silicon K-zirconia, alumina, alumina-magnesia, alumina-titania, alumina-boria, alumina-zirconia, alumina-phospha, titania, zirconia, boria, quartzite, quartz sand, kaolin, bentonite, magnesite, dolomite, feldspar, ceramic And at least one selected from stone, zeolite, silicon carbide, chromium carbide, tungsten carbide, lead zirconate titanate (PZT), and magnetic ceramics. Among these, from the viewpoint of strength improvement and weight reduction, if it is a metal, iron, an iron-based material containing iron, aluminum, an aluminum-based material containing aluminum, nickel or a nickel-based material containing nickel, and the like are preferable. For example, alumina, chromium carbide, tungsten carbide and the like are preferable.

  The resin portion is formed by impregnating a resin into the pores of at least the surface layer portion of the porous member and curing. The surface layer portion impregnated with the resin may be at least the surface layer portion on the sliding surface side, but the surface layer portion including the entire surface of the porous member may be impregnated with the resin. In any case, the resin is impregnated in the pores of at least the surface layer portion of the porous member. That is, as shown in FIG. 1, only the surface layer portion 11 of the porous member 10 may be impregnated with the resin R and cured to form the resin portion 20, or as shown in FIG. The resin portion 20 ′ may be formed by impregnating the resin R with the resin R as a whole. Alternatively, the resin part is formed by impregnating a resin in at least pores of the surface layer part of the porous member and curing the resin part, and covering the surface of the surface layer part. That is, as shown in FIG. 3, a resin portion 20 having a resin coating layer 21 in which the surface layer portion 11 of the porous member 10 is impregnated with the resin R and cured, and the resin R covers the surface of the surface layer portion 11. As shown in FIG. 4, a resin coating layer 21 formed by impregnating and curing the resin R on the entire porous member 10 and coating the surface of the surface layer portion 11 with the resin R is provided. A resin portion 20 ′ may be formed.

  In the sliding member of the present invention, the surface of the surface portion of the porous member or the surface of the resin coating layer becomes a sliding surface and slides with the counterpart material. When the surface of the surface layer portion of the porous member is a sliding surface, the wear resistance is excellent. On the other hand, when the surface of the resin coating layer is a sliding surface, the friction is lower and the opponent attack is low. Further, even when the resin coating layer is worn, the surface of the surface layer portion of the porous member becomes a sliding surface and can continue to slide.

  The resin impregnated in the porous member is preferably a heat-resistant resin having high heat resistance. Moreover, it is preferable that it is resin with the desired mechanical strength by itself. In particular, as long as the sliding member is used in a compressor such as a shoe, it is preferable to use an engineering plastic having high mechanical strength and excellent heat resistance or a super engineering plastic having higher heat resistance. Among them, examples of the heat-resistant resin having excellent slidability include polyetheretherketone resin, polyamide resin, polyimide resin, polyamideimide resin, polyphenylene sulfide resin, phenol resin, and copna resin. These can be used alone or in combination.

  The resin part preferably contains a solid lubricant and / or reinforcing fibers held by the resin. The resin part containing a solid lubricant exhibits excellent slidability. Further, the strength of the resin part obtained by impregnating and curing the fiber reinforced resin in at least the surface layer part of the porous member is improved because the reinforced fiber is held in the resin matrix. As described above, in the sliding member of the present invention, since the resin is impregnated into a porous member made of a foam metal or foam ceramic having a high porosity and a large pore diameter, a solid lubricant or a reinforcing fiber is used. Even if the resin is contained, the porous member is satisfactorily impregnated.

  There are no particular limitations on the type of solid lubricant, and it is desirable to use it in powder form. Solid lubricant powder is composed of layered structures such as graphite and talc, soft metals such as Pb, Ag and Cu and their compounds, fluorine resins such as polytetrafluoroethylene (PTFE), fluorine such as graphite fluoride and calcium fluoride. Any compound or the like that is usually used as a solid lubricant may be used, and at least one of molybdenum disulfide powder, graphite powder, and fluorine compound powder is particularly preferable. In addition, titanium oxide, tungsten carbide, boron nitride, melamine cyanurate, etc. can be used. The solid lubricant preferably has an average primary particle size of 500 μm or less, further 200 μm or less, from the viewpoint of improving the impregnation property and sliding property of the resin to the porous member.

  The reinforcing fiber may be any fiber that is normally used as a dispersion material for fiber-reinforced resin. Therefore, fibers such as boron, silicon carbide, alumina, carbon, aramid, and steel can be used in addition to glass fibers. Especially, glass fiber, carbon fiber, and an aramid fiber are mentioned as a reinforced fiber which does not have a bad influence on slidability, One or more of these can be used individually or used together. The reinforcing fiber is preferably a short fiber from the viewpoint of resin impregnation into the porous member. If the fiber length and fiber diameter of the reinforcing fiber are smaller than the pore diameter of the porous member to be used, the impregnation property does not decrease. Specifically, the fiber length is preferably 0.1 μm to 500 μm, more preferably 1 μm to 200 μm, and the fiber diameter is 0.05 μm to 50 μm, further 0.1 μm to 30 μm. If the fiber length and fiber diameter are in the above ranges, the fiber reinforced resin is satisfactorily impregnated into the porous member while maintaining the reinforcing effect of the reinforcing fibers.

  When the resin part includes a solid lubricant, the resin part is preferably formed by holding 5 to 120 parts by mass of the solid lubricant with respect to 100 parts by mass of the resin. Furthermore, if the blending amount of the solid lubricant is 100 parts by mass or less, it is desirable because the resin and the solid lubricant are satisfactorily impregnated into the porous member. When the resin part includes reinforcing fibers, the resin part preferably includes 150 parts by mass or less of reinforcing fibers and further 10 to 120 parts by mass with respect to 100 parts by mass of resin. Furthermore, if the compounding amount of the reinforcing fiber is 100 parts by mass or less, it is desirable because the partner's aggression on the sliding surface is reduced and the partner material is hardly damaged during sliding. When the resin part includes both the solid lubricant and the reinforcing fiber, the total of the solid lubricant and the reinforcing fiber is preferably 150 parts by mass or less with respect to 100 parts by mass of the resin from the viewpoint of impregnation.

  The sliding member of the present invention is a movable part of various devices and can be used for a sliding part. For example, the sliding member of the present invention is preferably a shoe of a swash plate compressor. The shoe is disposed between the swash plate and the piston, and includes a piston side sliding contact portion having a convex spherical surface that is in sliding contact with the piston, and a swash plate side sliding contact portion having a flat surface that is in sliding contact with the swash plate. Presents. That is, the sliding member of the present invention is a shoe of a swash plate compressor, and the porous member has a spherical surface portion in which one of the outer surfaces forms a convex spherical surface and a flat surface portion in which the other forms a substantially flat surface. It is good that it has a spherical crown shape. 1 to 4 are sectional views of a shoe of a swash plate compressor, which is an embodiment of the sliding member of the present invention. The shoe shown in FIGS. 1 to 4 has a circular recess formed at the top of the piston-side sliding contact portion, and serves as an oil holding groove for holding lubricating oil.

  The swash plate compressor shoe is required to slide under extremely severe conditions in response to recent demands for smaller and lighter compressors, and it is light and seizure and wear even under severe conditions. It is desirable not to cause such. By applying the sliding member of the present invention to the shoe, the conditions required for the swash plate compressor can be sufficiently satisfied.

  The sliding member of the present invention may be used as a swash plate of a swash plate type compressor, a swash plate of a swash plate type compressor, a sliding bearing that supports a drive shaft of the compressor, a piston of a piston type compressor, or the like.

  The manufacturing method of the sliding member of the present invention described in detail above is not particularly limited. Hereinafter, a method for manufacturing a sliding member according to the present invention will be described with reference to FIG. 5, taking a method for manufacturing a shoe of a swash plate compressor as an example. FIG. 5 is a cross-sectional view schematically showing an example of a method for manufacturing a shoe of the swash plate compressor shown in FIG.

  As the porous member 10, foamed aluminum or the like having continuous pores prepared in a predetermined shape by the manufacturing method already described is prepared. Further, as the resin R impregnated in the porous member 10, an additive material such as a resin composition containing a phenol resin, graphite powder, and glass fiber is prepared. For example, the resin composition and the additive material are melt-kneaded by an extruder and then the extruded material is cut into pellets.

  The shoe is manufactured by, for example, a mold 50 having a cavity 55 having the same shape as the porous member 10. The mold 50 includes an upper mold 51 that mainly molds the piston side sliding contact portion 16 of the shoe and a lower mold 52 that mainly molds the swash plate side sliding contact portion 17. The upper mold 51 communicates with the cavity 55 and has a resin supply path 56 that supplies the resin R in a melted state in the cavity 55. The lower mold 52 has a columnar communication hole 57 that communicates with the cavity 55, and the push pin 53 is slidably inserted into the communication hole 57.

  When manufacturing the shoe, the porous member 10 is placed in the cavity 55, and then the resin R obtained by heating and melting the pellet is supplied into the cavity 55 from the resin supply path 56. Thus, the resin R is fed into the pores of the porous member 10 and impregnated. The impregnated resin R is cooled and solidified in the pores of the porous member 10 to form a resin portion 20 '(FIG. 2). The shoe is released from the lower mold 52 by removing the upper mold 51 and then pushing the push pin 53 upward.

  In the case where the resin coating layer is formed on the surface of the surface layer portion of the porous member, the cavity 55 may be made slightly larger than the porous member 10 depending on the thickness of the resin coating layer. In this case, the protrusion protruding from the inner surface of the cavity is brought into contact with the outer surface (for example, oil retaining groove) of the porous member that does not require the resin coating layer to support the porous member. Thus, the position of the porous member in the cavity may be fixed. In addition, although casting molding using the mold 50 has been described, a method such as compression molding, injection molding, or transfer molding can be appropriately selected and used depending on the shape of the porous member and the shape of the pores. Depending on the type of resin, the porous member may be impregnated with the resin dissolved or dispersed in a solvent.

  A specific example of a swash plate compressor in which the sliding member of the present invention is used as a shoe is shown in FIG. In FIG. 6, a front housing 91 is attached to one end surface (the left end surface in FIG. 6) of the cylinder block 92 in the axial direction, and a rear housing 93 is connected to the other end surface (the right end surface in FIG. 6). It is attached via a plate 94. The front housing 91, the rear housing 93, the cylinder block 92, and the like constitute a swash plate compressor housing.

  A plurality of cylinder bores 95 extending in the axial direction are formed on one circumference around the central axis of the cylinder block 92. In each of the cylinder bores 95, a single-headed piston 96 (hereinafter abbreviated as a piston 96) is disposed so as to be able to reciprocate. A suction chamber and a discharge chamber are formed between the rear housing 93 and the valve plate 94, and are connected to a refrigeration circuit via a suction port and a supply port (not shown). Further, the valve plate 94 is provided with a suction hole, a suction valve, a discharge hole, a discharge valve and the like (not shown).

  A rotation shaft 90 is provided in the housing so as to be rotatable about the central axis of the cylinder block 92 as a rotation axis. The rotating shaft 90 is rotatably supported at both ends by a front housing 91 and a cylinder block 92 via bearings. The end of the rotary shaft 90 on the front housing 91 side is connected to a drive source, and the rotary shaft 90 rotates around the central axis.

  A swash plate 98 is attached to the rotary shaft 90 so as to be relatively movable and tiltable in the axial direction. A through hole passing through the center line is formed in the swash plate 98, and the rotating shaft 90 passes through the through hole. A rotating plate 90 a is fixed to the rotating shaft 90 and is received by the front housing 91 via a thrust bearing. The swash plate 98 rotates integrally with the rotary shaft 90 by the hinge mechanism 90b and can be tilted with movement in the axial direction.

  The piston 96 includes an engaging portion that is engaged with the outer periphery of the swash plate 98 and a head that is provided integrally with the engaging portion and is slidably fitted into the cylinder bore 95. A compression chamber is defined by the head of the piston 96, the cylinder bore 95 and the valve plate 94.

  In the swash plate compressor shown in FIG. 6, a crown-shaped shoe 99 connects the engaging portion of the piston 96 and the outer peripheral portion of the swash plate 98 so as to be slidable. The shoes 99 are used as a pair with respect to one piston, and sandwich the outer peripheral portion of the swash plate 98. The engaging portion of the piston 96 is engaged with the swash plate 98 via a pair of shoes 99. At this time, the outer peripheral surface 98p of the swash plate 98 and the flat surface 99p of the shoe 99, the sliding surface 96q of the engaging portion of the piston 96, and the convex spherical surface 99q of the shoe 99 abut. The piston 96, the swash plate 98, and the shoe 99 slide between 98p / 99p and 96q / 99q, so that the rotational motion of the swash plate 98 is converted into the reciprocating linear motion of the piston 96 via the shoe 99. .

  As mentioned above, although embodiment of the sliding member of this invention was described, this invention is not limited to the said embodiment. The present invention can be implemented in various forms without departing from the gist of the present invention, with modifications and improvements that can be made by those skilled in the art. For example, any or all of hard particles, extreme pressure agents, surfactants, processing stabilizers, and antioxidants may be added to the resin impregnated in the porous member.

It is sectional drawing which shows the shoes of the swash plate type compressor which is one Embodiment of the sliding member of this invention. It is sectional drawing which shows the shoes of the swash plate type compressor which is one Embodiment of the sliding member of this invention. It is sectional drawing which shows the shoes of the swash plate type compressor which is one Embodiment of the sliding member of this invention. It is sectional drawing which shows the shoes of the swash plate type compressor which is one Embodiment of the sliding member of this invention. It is sectional drawing which shows typically an example of the manufacturing method of the shoes shown in FIG. It is explanatory drawing which shows the swash plate type compressor in which the sliding member of this invention is used as a shoe.

Explanation of symbols

10: Porous member 11: Surface layer portion 16: Piston side sliding contact portion 17: Swash plate side sliding contact portion 20, 20 ', 21: Resin portion (21: Resin coating layer)

Claims (16)

  A porous member made of a foam metal or a foam ceramic, and a resin part formed by impregnating and curing a resin in at least pores of the surface layer part of the porous member, the surface of the surface layer part being slid with the counterpart material. A sliding member characterized by contacting.   A porous member made of a foam metal or a foamed ceramic, and a resin portion formed by impregnating and curing a resin in at least the surface layer portion of the porous member and covering the surface of the surface layer portion, A sliding member, wherein the surface of the resin portion is in sliding contact with a mating member.   The sliding member according to claim 1 or 2, wherein the porosity of the porous member is 55 to 98% by volume.   The sliding member according to claim 1 or 2, wherein the porosity of the porous member is 80 to 98% by volume.   The sliding member according to claim 1, wherein the porous member has a pore diameter of 50 μm to 3 mm.   The sliding member according to claim 1 or 2, wherein the porous member has a pore diameter of 100 µm to 3 mm.   The sliding member according to claim 1, wherein the porous member has independent pores.   The sliding member according to claim 1, wherein the porous member has continuous pores, and the resin portion is impregnated in the entire porous member.   The sliding member according to claim 1 or 2, wherein the foam metal is made of iron, an iron-based material including iron, aluminum, an aluminum-based material including aluminum, nickel, or a nickel-based material including nickel.   The sliding member according to claim 1, wherein the ceramic foam is made of alumina, chromium carbide, or tungsten carbide.   The sliding member according to claim 1, wherein the resin is a heat resistant resin.   The sliding member according to claim 11, wherein the heat-resistant resin is at least one of a polyether ether ketone resin, a polyamide resin, a polyimide resin, a polyamideimide resin, a polyphenylene sulfide resin, a phenol resin, and a copna resin.   The sliding member according to claim 1, wherein the resin portion includes a solid lubricant and / or a reinforcing fiber held by the resin.   The sliding member according to claim 13, wherein the solid lubricant is at least one of molybdenum disulfide powder, graphite powder, and fluorine compound powder.   The sliding member according to claim 13, wherein the reinforcing fiber is at least one of glass fiber, carbon fiber, and aramid fiber.   2. The shoe of a swash plate compressor, wherein the porous member has a spherical crown shape having a spherical surface portion in which one of the outer surfaces forms a convex spherical surface and a flat surface portion in which the other surface forms a substantially flat surface. Or the sliding member of 2.

Images