KR20070026144A - Swash plate for use in swash plate compressor and swash plate compressor - Google Patents

Abstract

A swash plate and an inclined type compressor for a swash plate type compressor is provided to use for a long period of time in a swash plate type compressor using carbon dioxide as a cooling medium by coating the metallic swash plate with materials with abrasive resistance and adhesive property. A swash plate and a swash plate type compressor for an inclined plate type compressor comprises a housing, a rotating shaft, a shoe, and a lubricant coating. The housing is charged with a cooling medium. The rotary shaft passes through the housing. A swash plate(3) is mounted on the rotary shaft in angle, or is mounted on the rotary shaft by coupling members. The shoe is installed between the swash plate and a piston to convert the rotational motion to a reciprocal motion of the piston for alternatively compress and expand the cooling medium within the housing. The swash plate contains metal plate, and on the surface of the metal plates which slides to the shoe is coated with lubricant coating(11). The lubricant coating is made of fluororesin, heat resistant resin, and metallic oxide powder. The lubricant coating contains 100 parts by weight of fluororesin, 100 to 150 parts by weight of heat resistant resin, and 5 to 20 parts by weight of metallic oxide powder. The metallic oxide powder is made from iron oxide powder. A porosity middle layer(10a) is installed between the metal plate and the lubricant coating.

Description

Inclined Plate Compressor and Inclined Plate Compressor {SWASH PLATE FOR USE IN SWASH PLATE COMPRESSOR AND SWASH PLATE COMPRESSOR}

1 is a vertical sectional view of an inclined plate compressor according to a first embodiment of the present invention.

2 is a cross-sectional view of the inclined plate of FIG.

3 is a cross-sectional view of the inclined plate for the inclined plate compressor according to the second embodiment of the present invention.

TECHNICAL FIELD This invention relates to the inclination plate for inclination plate type | mold compressors used for an air conditioner (air conditioner), for example, and this inclination plate compressor.

The inclined plate compressor includes a housing filled with a refrigerant, a rotating shaft extending through the housing, and an inclined plate mounted directly to the rotating shaft to extend at an angle with respect to the rotating shaft or indirectly mounted to the rotating shaft through a coupling member. The rotational movement of the swash plate is converted into reciprocating motion of the piston through a shoe in sliding contact with the swash plate to expand and compress the refrigerant. The piston used in such a gradient plate compressor is a double head piston or a single head piston. If a double head piston is used, the refrigerant is expanded and compressed by the two heads of each piston on both sides of the swash plate. If a single head piston is used, the refrigerant is expanded and compressed by a single head of each piston on one side of the swash plate. The shoe is provided on only one side of the inclined plate or on both sides of the inclined plate.

Immediately after the operation of the inclined plate compressor, the inclined plate and the shoe made of metal are brought into sliding contact with each other between the inclined plate and the shoe in the absence of lubricant before the lubricant flows into the housing. Therefore, seizure tends to occur between the inclined plate and the shoe. To prevent this squeeze, a metal coating of copper or aluminum is formed by flame spraying on the surface of the metal inclined plate in sliding contact with the shoe, and the lead coating layer, tin on the thermally sprayed metal layer Forming a coating or lead-tin coating layer or a polytetrafluoroethylene (PTFE) coating, a coating made of molybdenum disulfide or a mixture of molybdenum disulfide and graphite (Japanese Patent Laid-Open No. 8-199327A; Document 1), which is a thermosetting resin Forming a sliding layer comprising polyamide-imide (PAI) resin and PTFE and comprising a solid lubricant solidified to PAI (Japanese Patent Laid-Open No. 2003-138287A; Document 2), or mainly tin, copper or metal phosphate Sliding contact layer comprising an intermediate layer consisting of a thermosetting resin and at least one solid lubricant selected from molybdenum disulfide and graphite (Japanese Patent Laid-Open No. 11-13638; Document 3) has been proposed.

In the case of inclined plate type compressors using carbon dioxide gas, which is currently being developed, as a refrigerant, the pressure in the compressor rises as high as 10 MP, and as a result, the sliding pressure between the inclined plate and the shoe tends to be higher. Therefore, for the coating formed on the metal substrate of the inclined plate, high adhesion to the substrate and high wear resistance are required.

In the configuration of Document 1, it is necessary to thermally spray on the surface of the metal substrate to form a metal layer of copper or aluminum, and then form a coating layer or a coating layer on the thermally sprayed metal layer. This significantly increases the number of manufacturing steps of the inclined plate, thereby increasing its manufacturing cost. When the inclined plate is used in a compressor in which carbon dioxide gas is used as a refrigerant, a resin coating such as a PTFE coating formed on a thermally sprayed metal layer does not have sufficient adhesion and wear resistance to the substrate.

In the configuration of Document 2, the inclined plate can be manufactured with fewer manufacturing processes. However, by simply adding a solid lubricant comprising PTFE, the PAI forming the sliding layer is not abrasion resistant enough for use in inclined plate compressors where carbon dioxide gas is used as the refrigerant. In addition, the inclined plate disclosed in Document 3, which includes an intermediate layer and a sliding contact layer, also does not have sufficient adhesion and wear resistance for use in an inclined plate compressor in which carbon dioxide gas is used as a refrigerant.

SUMMARY OF THE INVENTION An object of the present invention is to provide an inclined plate for use in an inclined plate compressor, the inclined plate comprising a metal substrate and a coating layer formed on the substrate having excellent resistance to seizure, adhesion and wear resistance. The present invention provides an inclined plate that can be used for a sufficiently long time in an inclined plate compressor in which carbon dioxide gas is used as a refrigerant.

According to the present invention, a housing filled with a refrigerant, a rotating shaft extending through the housing, an inclined plate, a piston, a housing mounted directly to the rotating shaft so as to extend obliquely with respect to the rotating shaft, or indirectly mounted to the rotating shaft through a coupling member. In order to alternately compress and expand the refrigerant, there is provided an inclined plate compressor comprising an shoe disposed between the inclined plate and the piston so as to slide in contact with the inclined plate such that the rotational movement of the inclined plate is converted into the reciprocating motion of the piston through the shoe. The inclined plate is composed of a metal substrate and a lubricating coating formed on the surface of the metal substrate which is made of fluororesin, heat resistant resin, and metal oxide powder and is in sliding contact with the shoe.

Since the fluororesin has a low frictional force, the fluororesin can impart adhesion to the lubrication coating. The fluororesin must have sufficient heat resistance to withstand the temperature generated at the sliding contact between the lubricating coating and the shoe, and can be made of PTFE (melting point θ _M : 327 ° C .; continuously usable temperature θ _A : 260 ° C.) Hexafluoropropylene copolymer (θ _M : 270 ° C .; θ _A : 200 ° C.), tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer (θ _M : 310 ° C .; θ _A : 260 ° C.), tetrafluoroethylene-ethylene air Coalesced (θ _M : 270 ° C .; θ _A : 150 ° C.), polychlorotrifluoroethylene (θ _M : 210 ° C .; θ _A : 120 ° C.) or ethylene-chlorotrifluoroethylene copolymer (θ _M : 240 ° C .; θ _A : 150 ° C.) or copolymers or terpolymers thereof.

Among these, PTFE containing a repeating unit of —CF ₂ CF ₂ — has a sufficiently high melting viscosity of 10 ¹⁰ to 10 ¹¹ Pa · s at 340 to 380 ° C., so it is less likely to flow even at a temperature higher than the melting point, Among the fluororesins, the heat resistance is the highest. In addition, it exhibits excellent sliding characteristics at room temperature. Among these PTFEs, lubricant grade PTFE powders are particularly preferred. Commercially available lubricant grade PTFE powders include POLYFLON M15 and LUBRON L-2 (both manufactured by Daikin Kogyo Co., Ltd.), TEFLON TLP-10 (manufactured by DuPont), and FLUON G163 (Asahi Glass Co., Ltd.). Manufactured by). Lubricant grade PTFE powders are prepared by irradiating PTFE, which is produced by heating and grinding PTFE, or PTFE, which has reduced molecular weight of PTFE with gamma rays. Commercially available gamma-irradiated PTFE powder contains KT400H (manufactured by Kitamura Co., Ltd.).

The PTFE powder may be in the form of a powder for molding or a fine powder for a solid lubricant, and the average diameter of these fine particles is 0.1-20 탆, preferably 0.2-10 탆. Within this range, the PTFE powder is less likely to agglomerate in the coating agent and therefore uniformly dispersed in the coating.

The heat resistant resin is strongly adhered to the metal substrate without the thermal sensitivity of the lubricating coating, and also binds the fluororesin powder particles or the metal oxide powder particles together. Heat resistant resins include polyimide resins, epoxy resins, phenolic resins, and silicone resins. Of these, polyimide resins are the highest in terms of heat resistance and adhesion.

Specific polyimide resins usable in the present invention include polyimide (PI), polyamide-imide (PAI), polyesterimide and polyesteramide-imide and the like. Among them, PI and PAI are preferable, and aromatic polyimide and aromatic polyamide-imide in which imide bonds or amide bonds are bonded together through an aromatic group are particularly preferable.

PI is a polyimide precursor obtained by ring-opening polyaddition reaction of acid dianhydride and diamine in an aprotic polar solvent such as, for example, N-methyl-2-pyrrolidone (NMP) or dimethylacetamide (DMAC) Obtained by heat cyclization and dehydration cyclization of the polyamide carboxylic acid. PI can be used mixed with polyamide carboxylic acid therein.

PAI is a resin having an imide bond and an amide bond. Imide linkages of aromatic polyamide-imides are, for example, precursors of polyamide acids, closed imide rings, or mixtures thereof. Some of these aromatic polyamide-imide resins are produced from aromatic primary diamines (such as diphenylmethanediamine) and aromatic tribasic acid anhydrides (such as monoacyl or diacyl halogen derivatives of trimellitate anhydride), The remainder of the aromatic polyamide-imide resins are produced from aromatic disocyanate compounds (such as diphenylmethane disocyanate) and aromatic tribasic acid anhydrides. Among the PAIs containing imide bonds in a higher proportion than the amide bonds, there are aromatic, aliphatic or alicyclic disocyanate compounds, aromatic tetrabasic acids resulting from dianhydrides and aromatic tribasic acid anhydrides. All of the aforementioned PAIs can be used in the present invention.

The metal oxide powder serves to improve the wear resistance of the lubricating coating, and may be a powder of iron oxide, titanium oxide, magnesium oxide, or aluminum oxide.

Lubricating coatings can be formed by applying the above-mentioned composition to the surface of a metal substrate, for example by dipping, spray coating, brush coating or powder coating, and heating the applied coating. If a spray coating is used to apply the coating, it is possible to control the thickness of the coating with high precision since the coating is adhered to the surface of the metal substrate in the form of fine particles.

Except for powder coating, the coating agent is obtained by dispersing or dissolving fluororesin, thermosetting resin and metal oxide powder in a solvent. Suitable solvents include ketones such as acetone and methyl ethyl ketone, esters such as methyl acetate and ethyl acetate, aromatic hydrocarbons such as toluene and xylene, organic halogenated compounds such as methylchloroform, trichloroethylene and trichlorotrifluoroethane, and NMP, DMAC , Aprotic polar solvents such as methylisopyrrolidone (MIP) and dimethylformamide (DMF). No solvent is used for powder coating.

The thickness of the coating layer formed on the metal powder is 5 to 40 mu m, preferably 10 to 30 mu m after heating. If the thickness is less than 5 μm, the coating may be partially worn if the shoe contacts the coating unevenly. If the thickness exceeds 40 mu m, the coating tends to wear.

Appropriate heating temperature (calcining temperature) of the coating layer is 200 to 350 ℃ although it varies depending on the type of heat-resistant resin to form a coating agent. If the heating temperature is less than 200 ° C., the imide reaction of the polyamic acid as a precursor is not sufficient, and thus the adhesion of the coating layer to the metal substrate may not be sufficient. If the heating temperature exceeds 350 ° C., the fluororesin is heated to a temperature above its melting point and starts to decompose. If the metal substrate is made of a light cast alloy such as an aluminum alloy, the coating layer is heated below 250 ° C. since the metal substrate tends to degrade due to heat deformation if it is heated above 250 ° C. desirable.

In the case where the heat resistant resin is PAI, an appropriate heating temperature of the coating layer is 180 to 280 ° C. If it is less than 180 ° C., the curing of the PAI is not sufficient, so that the adhesion of the coating layer to the metal layer is not sufficiently achieved. If it exceeds 280 ° C, the fluororesin is heated to a temperature above its melting point and starts to decompose. In order to save heating energy as well, the coating layer should be heated below 280 ° C since the adhesion of PAI to the metal substrate is in equilibrium near 280 ° C.

In order to maximize the adhesion of the coating layer to the substrate and its wear resistance, the lubricating coating preferably comprises 100 parts by weight of fluororesin, 100 to 150 parts by weight of heat resistant resin, and 5 to 20 parts by weight of metal oxide powder. If the content of the heat resistant resin is less than 100 parts by weight based on 100 parts by weight of the fluororesin, the adhesive force tends to be low. If it exceeds 150 parts by weight, the sliding property is deteriorated and the adhesion is increased. If the content of the metal oxide powder is less than 5 parts by weight based on 100 parts by weight of the fluororesin, the wear resistance tends to be insufficient. If it exceeds 20 parts by weight, the adhesive force becomes too low.

By selecting the iron oxide powder as the metal oxide powder, wear resistance is improved. In addition, iron oxide powder has advantages in that it is easily available and inexpensive.

As the iron oxide powder, iron (II) oxide, diiron trioxide, triiron tetraoxide, or the like can be used. The iron oxide powder may be spherical, scaly, or needle-shaped particles. These average particle diameters are not limited, but may be, for example, in the range of about 0.1 to 10 mu m. However, it is preferable that these average particle diameters exist in the range of 0.1-1 micrometer, and it is more preferable to exist in the range which is 0.2-0.5 micrometer. If the average particle diameter is less than 0.1 mu m, the powder particles tend to aggregate and the probability of uniform distribution becomes low. If it exceeds 1 mu m, the abrasion resistance of the coating tends to be somewhat heterogeneous. The average particle diameter of the iron oxide powder can be measured by the BET method, but can also be measured by other methods.

By forming a porous intermediate layer between the metal substrate and the lubricating coating, the resin forming the lubricating coating can partially penetrate into the pores of the intermediate layer, and therefore, due to the anchoring effect of the resin constituting the lubricating coating in the pores, The adhesion of the lubricating coating on the substrate increases. The porous interlayer can be made of metal or ceramic material. However, in the case where the lubricating coating is worn and the intermediate layer is in direct frictional contact with the shoe, the intermediate layer is preferably made of metal, since the metal intermediate layer has a higher resistance to attack from the shoe. In particular, the intermediate layer may be made of Cu, Sn, Al, Ni, Mo, Fe or an alloy thereof. Among these, soft metals, that is, Cu, Sn, Al, Ni, and Mo, are preferable because they have a higher resistance to impact from the shoe.

The porous interlayer is preferably a sintered porous layer or a thermally sprayed porous layer in order to improve the uniformity of the pores, thereby increasing the fixing effect and further improving the adhesion of the lubricating coating to the substrate. Such porous interlayers can be formed at low cost.

According to another embodiment of the present invention, there is provided an inclined plate compressor including the above-mentioned inclined plate.

Even if carbon dioxide gas is used as the refrigerant of the inclined plate compressor and the pressure in the compressor reaches 10 MPa, the inclined plate can be used for a long time because the lubricating coating of the inclined plate is sufficiently high in adhesion and wear resistance to the metal substrate.

The inclined plate used in the inclined plate compressor according to the present invention includes a metal substrate and a lubrication coating formed on the surface of the metal substrate in sliding contact with the shoe of the compressor. Lubrication coatings include fluororesins, heat resistant resins, and metal oxide powders. Fluorine resins guarantee adhesion. The heat resistant resin sufficiently ensures the adhesion of the coating to the metal substrate. Metal oxide powders ensure wear resistance. Therefore, the metal substrate of the inclined plate can be coated with a coating layer having adhesion, adhesion and wear resistance.

(Preferred embodiment)

The objects and other features of the present invention will become apparent from the following description with reference to the accompanying drawings.

Referring to the drawings, FIG. 1 shows a first embodiment of an inclined plate compressor. The inclined plate compressor is directly fixed to the housing 1 filled with the carbon dioxide gas, the rotating shaft 2 extending through the housing 1, and the rotating shaft 2 extending obliquely with respect to the rotating shaft 2. Inclined plate 3. When the rotating shaft 2 rotates, the inclined plate 3 reciprocates the piston 5 via the shoe 4 which is slidably provided on both sides of the inclined plate 3. The housing 1 is formed with a plurality of cylinder bores 6 arranged at equal intervals in the circumferential direction. Each piston 5 has a head at both ends. Each head slides in each bore 6 as the piston 5 reciprocates, alternately compressing and expanding the refrigerant in the bore 6. The rotating shaft 2 rotating at high speed is radially supported by the needle roller bearing 7 and axially supported by the thrust needle roller bearing 8.

The piston 5 has a recess 5a surrounding the radially outer end of the inclined plate 3. The shoe 4 is a hemispherical member seated on a hemispherical sheet 9 formed in an axially facing wall in the recess 5a. The shoe 4 serves to smoothly convert the rotational movement of the inclined plate 3 into the reciprocation of the piston 5.

FIG. 2 shows the swash plate 3 of the compressor shown in FIG. 1. The inclined plate 3 has a substrate 3a made of aluminum alloy AC8C. On each side surface of the substrate 3a, a porous sintered layer 10a of copper alloy is formed. On each porous sintered layer 10a, a coating 11 containing PTFE as a fluororesin, PAI as a heat resistant resin, and iron oxide or titanium oxide as a metal oxide powder is further formed.

Each porous sintered layer 10a was degreased on the surface of the substrate 3a and plated with copper, followed by copper alloy powder containing 95 mass% Cu and 5 mass% Sn (# 100 mesh Pass but do not pass # 200 mesh) is formed by uniformly dispersing on the plated surface and heating and pressurizing the substrate (3a).

The coating 11 is prepared by dissolving PAI in an NMP solvent to prepare a resin solution, adding PTFE and iron oxide powder or titanium oxide powder to the resin solution to prepare a uniform composition, and preparing the composition with NMP, DMF, and xylene. And diluting ethyl acetate with a mixed solvent to prepare a coating containing about 23% by mass of solids, which is applied to the porous sintered layer 10 of copper alloy by spray coating, and dried thereafter, to a maximum. Bake at a temperature of 240 ° C. The thickness of the coating 11 is about 20 μm.

Example A

Example A is a disk-shaped test piece which is all made of aluminum alloy AC8C. As shown in Table 1, Examples 1 to 3 of the present invention each have a lubricating coating including PTFE, PAI and iron oxide powder on one side thereof, in which the iron oxide content is different. Example 4 of the present invention has a lubricating coating comprising PTFE, PAI and titanium oxide powder on one side thereof. Comparative Example 1 and Comparative Example 2 each contain one of the metal oxide powders used in Examples 1 to 4 of the present invention, that is, molybdenum disulfide (MoS ₂ ) and bronze powder instead of iron oxide or titanium oxide on one side thereof. It has a lubricating coating formed from the coating agent in the same manner as in the case of the lubricating coating of Examples 1 to 4 of the present invention. The figures in Table 1 are parts by weight based on 100 parts by weight of PTFE.

In order to measure the depth of wear of each of the test pieces, a wear resistance test was performed on the test pieces of the Examples and Comparative Examples of the present invention using a 3-ball-on tester under the following conditions.

Load: 5kgf

Rotational Speed: 200rpm

Lubrication Condition: Dry

Experiment time: 2 minutes

The results of the wear test are shown in Table 1. In the case of Examples 1 to 4 of the present invention having a lubricating coating containing a metal oxide powder, the wear depth is small, which means that the lubricating coatings of Examples 1 to 4 of the present invention all have sufficient wear resistance. . The wear depth is the smallest for Example 3 with a lubricating coating comprising 100 parts by weight PTFE, 150 parts by weight PAI and 15 parts by weight iron oxide. In the case of Examples 1 and 2 in which iron oxide was used as the metal oxide powder, the wear depth thereof was evaluated in Table 1 in the same manner as in Example 4 in which titanium oxide was used, but slightly smaller than in Example 4. In contrast, the wear depths of Comparative Examples 1 and 2 using the coating containing no metal oxide powder are so large that sufficient wear resistance cannot be secured.

FIG. 3 shows an inclined plate 3 used in an inclined plate compressor according to a second embodiment of the present invention. This inclined plate 3 is basically the same as the inclined plate of the first embodiment, but the metal substrate 3a is made of steel S45C, and copper is formed on each of the opposing surfaces of the substrate 3a, which is brought into sliding contact with the shoe 4. The difference is that the porous thermal sprayed layer 10b of the alloy is formed. On each porous thermal spray layer 10b, a lubricating coating 11 comprising PTFE, PAI and iron oxide or titanium oxide is formed like the lubricating coating of the first embodiment.

Example B

Example B is a disk-shaped test piece all made of steel S45C. As shown in Table 2, Examples 11 to 13 of the present invention are on a porous thermal sprayed layer of a copper alloy containing 90 mass% Cu and 5 mass% Sn on one side thereof, and on the porous thermal sprayed layer, respectively. It has been formed and has a lubricating coating comprising PTFE, PAI and iron oxide powder, in which the iron oxide content is different. In Example 14 of the present invention, a lubricating coating comprising PTFE, PAI, and titanium oxide powder was formed on each porous thermal sprayed layer. Comparative Examples 11 and 12 are not formed through the porous thermal spray layer, respectively, and are used in the metal oxide powders used in Examples 11 to 14 of the present invention, ie, copper powder and molybdenum disulfide (MoS ₂ ) instead of iron oxide or titanium oxide. It has a lubricating coating formed directly on one side in the same manner as in the case of the lubricating coating of Examples 11 to 14 of the present invention from a coating comprising one. The figures in Table 2 are parts by weight based on 100 parts by weight of PTFE.

Two types of friction wear tests (tests 1 and 2) were carried out, and a thrust type tester (3-shoe-on type) in sliding contact with each specimen under the conditions shown in Table 3 of three steel shoes. It carried out with respect to the test piece of the Example and comparative example of this invention. Through this test, the friction coefficient at the sliding part of each test piece was measured at the start of each test and 5 minutes after the start, and the temperature and wear depth of the sliding surface of each test piece were measured at 5 minutes after the start of each test. Measured.

The results of the friction wear test are shown in Table 2. In Examples 11 to 14 of the present invention each comprising a porous thermal spray layer between the metal substrate and the lubricating coating and the lubricating coating contains a metal oxide powder, the wear depth is that the sliding surface is lubricated in a dry state. Not only in test 1, but also in test 2 where the sliding surface pressure is high (ie 10 MPa). This shows that all of the specimens of Examples 11 to 14 of the present invention have sufficient wear resistance. As far as the values in Table 2 are concerned, Examples 11-14 show exactly the same results in friction coefficient and wear depth. However, when visually observing the test piece, the case of Example 13 was the smallest in both the friction coefficient and the wear depth, followed by Example 12, then Example 14, and then Example 11 If it is.

In contrast, in any of Comparative Examples 11 and 12 in which no porous thermal spray layer was formed and the coating contained no metal oxide powder, the wear depth was so large that sufficient wear resistance could not be ensured. In test 2, the lubricating coating of Comparative Example 11 did not peel off from the metal substrate but some interfacial peeling occurred.

In the above embodiment, the inclined plate is used in an inclined plate type compressor including a piston having a head at both ends and a shoe which is in sliding contact with both side surfaces of the inclined plate. However, another type of inclination plate according to the present invention includes a shoe having a head only at one end thereof, and includes a shoe that is in sliding contact with only one side of the inclination plate, and the inclination plate is provided on the rotating shaft through the coupling member. It can also be used for the inclined plate compressor.

According to the present invention, an inclined plate used in an inclined plate compressor includes a metal substrate and a coating layer formed on the substrate and having excellent adhesion resistance, adhesion and abrasion resistance, and carbon dioxide gas is used as a refrigerant. It can be used for a long time enough to be inclined plate compressor.

Claims (7)

In the inclined plate for inclined plate type compressor, Housings filled with refrigerant, A rotating shaft extending through the housing, The inclined plate mounted directly to the rotating shaft or indirectly mounted to the rotating shaft through a coupling member so as to extend obliquely with respect to the rotating shaft, and To alternately compress and expand the refrigerant in the housing, including a shoe disposed between the inclined plate and the piston in sliding contact with the inclined plate such that the rotational movement of the inclined plate is converted into a reciprocating motion of the piston through the shoe, The inclined plate includes a metal substrate and a lubrication coating formed on a surface of the metal substrate in sliding contact with the shoe. The lubricating coating is inclined plate comprising a fluororesin, a heat resistant resin and a metal oxide powder. The inclined plate of claim 1, wherein the lubricating coating comprises 100 parts by weight of the fluororesin, 100 to 150 parts by weight of the heat resistant resin, and 5 to 20 parts by weight of the metal oxide powder. The inclined plate according to claim 1 or 2, wherein the metal oxide powder is iron oxide powder. The inclined plate according to any one of claims 1 to 3, wherein a porous intermediate layer is formed between the metal substrate and the lubricating coating. The inclined plate of claim 4, wherein the porous interlayer is one of a sintered porous layer and a thermally sprayed porous layer. An inclined plate compressor comprising the inclined plate according to any one of claims 1 to 5. 7. An inclined plate compressor according to claim 6, wherein carbon dioxide gas is used as a refrigerant.

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