JPH11106877A - Self-lubricative wear resistant material and its production as well as sliding part - Google Patents
Self-lubricative wear resistant material and its production as well as sliding partInfo
- Publication number
- JPH11106877A JPH11106877A JP26530897A JP26530897A JPH11106877A JP H11106877 A JPH11106877 A JP H11106877A JP 26530897 A JP26530897 A JP 26530897A JP 26530897 A JP26530897 A JP 26530897A JP H11106877 A JPH11106877 A JP H11106877A
- Authority
- JP
- Japan
- Prior art keywords
- solid lubricant
- fluoride
- self
- alkaline earth
- earth metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000463 material Substances 0.000 title claims abstract description 41
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 5
- 239000000314 lubricant Substances 0.000 claims abstract description 20
- 239000007787 solid Substances 0.000 claims abstract description 20
- 239000000843 powder Substances 0.000 claims abstract description 15
- 229910000997 High-speed steel Inorganic materials 0.000 claims abstract description 14
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims abstract description 12
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims abstract description 7
- 150000001342 alkaline earth metals Chemical class 0.000 claims abstract description 7
- 229910001618 alkaline earth metal fluoride Inorganic materials 0.000 claims description 2
- 239000011159 matrix material Substances 0.000 claims description 2
- 239000011812 mixed powder Substances 0.000 claims description 2
- 238000002844 melting Methods 0.000 abstract description 8
- 230000008018 melting Effects 0.000 abstract description 8
- 238000005461 lubrication Methods 0.000 abstract description 4
- 239000007769 metal material Substances 0.000 abstract description 2
- 229910001632 barium fluoride Inorganic materials 0.000 abstract 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 abstract 1
- 229910001634 calcium fluoride Inorganic materials 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- 238000002407 reforming Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 239000000460 chlorine Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 4
- 229910052801 chlorine Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910004261 CaF 2 Inorganic materials 0.000 description 3
- 150000002222 fluorine compounds Chemical group 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910016036 BaF 2 Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 238000009689 gas atomisation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 238000007733 ion plating Methods 0.000 description 1
- 229910052976 metal sulfide Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000005240 physical vapour deposition Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Landscapes
- Valve-Gear Or Valve Arrangements (AREA)
- Rotary Pumps (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は自己潤滑性にすぐれ
た金属系耐摩耗材料、その製造方法及び摺動部品に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal-based wear-resistant material having excellent self-lubricating properties, a method for producing the same, and a sliding part.
【０００２】[0002]
【従来の技術】たとえば、家庭用及び自動車用エアコン
のコンプレッサーでは、オゾン層破壊の問題から、従来
の塩素を含むいわゆる特定フロンに変わり、塩素を含ま
ないＨＦＣタイプのフロンが使用されるようになってき
た。従来のコンプレッサーでは摺動部材に局所的な過荷
重や油切れが起きた場合には、フロンに含まれる塩素が
摺動面に吸着・反応したとえば、塩化鉄を生じる事によ
り、塩化鉄の潤滑作用により部品の焼き付きや、摩耗が
防止されていた。ところが塩素を含まない代替フロンで
は、このような作用は生じないため、部品の摩耗や焼き
付きによる寿命低下が問題となっている。2. Description of the Related Art For example, in the compressors of home and automobile air conditioners, HFC-type HFCs containing no chlorine have been used instead of conventional so-called specific CFCs containing chlorine due to the problem of ozone layer destruction. Have been. In a conventional compressor, when local overload or oil shortage occurs on sliding members, chlorine contained in Freon is adsorbed and reacts on the sliding surface, for example, iron chloride is generated, and lubrication of iron chloride occurs. The effect prevented seizure and wear of the parts. However, such an effect does not occur in the alternative fluorocarbon containing no chlorine, and thus, there is a problem that the life is shortened due to wear and seizure of parts.
【０００３】また、自動車エンジンにおける動弁部品で
は、可変動弁機構の採用や、フリクション低減のための
潤滑油の低粘度化等により、摺動環境が過酷になってき
ており、従来の材料では焼き付きや摩耗の問題から部品
の寿命が低下し、対策が求められている。[0003] Further, in the valve operating parts of an automobile engine, the sliding environment has become severe due to the adoption of a variable valve operating mechanism and a reduction in the viscosity of lubricating oil for reducing friction. Due to the problem of seizure and wear, the life of parts is shortened, and measures are required.
【０００４】このような材料ニーズに対応するため、使
用する部品の材料グレードを上げたり、イオンプレーテ
ィング等の表面改質により対応がとられていた（「まて
りあ」Ｖｏｌ３６（１９９７）Ｎｏ．８，第７７８〜７
７９頁参照）。しかしながら、セラミック、金型用鋼を
初めとする高耐摩耗材料は、プレス成形や加工が困難で
あり、表面改質においては処理のための形状の制約や、
処理時の母材の変質、改質層と母材との密着性等の問題
があり、価格面、信頼性の面で充分ではなかった。[0004] In order to meet such material needs, measures have been taken to improve the material grade of the parts to be used and to improve the surface by ion plating or the like ("Materia" Vol 36 (1997) No. 8, 778-7
See page 79). However, high wear-resistant materials such as ceramics and mold steels are difficult to press-form and process.
There were problems such as deterioration of the base material during the treatment and adhesion between the modified layer and the base material, and the price and reliability were not sufficient.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、このような
状況に鑑み金属材料に自己潤滑性を持たせることによ
り、材質置換や特殊な表面改質を行うことなく、安価で
高い性能を持つ材料並びに、その材料を用いた製品を提
供することを目的としている。SUMMARY OF THE INVENTION In view of such circumstances, the present invention provides a metal material with self-lubricating properties, thereby achieving high performance at low cost without material replacement or special surface modification. The purpose is to provide materials and products using the materials.
【０００６】[0006]
【課題を解決するための手段】本発明は、固体潤滑剤と
してアルカリ土類金属の弗化物を高速度鋼粉末基地中に
分散したことを特徴とする自己潤滑性耐摩耗材料を提供
する。本発明は粉末材料を原料とする高速度鋼（いわゆ
る焼結ハイス材）において、固体潤滑剤としてアルカリ
土類金属の弗化物が均一に分布している自己潤滑性耐摩
耗材料であって、その固体潤滑剤がＣａＦ2、ＢａＦ2 等
のアルカリ土類金属の弗化物であることを特徴とする材
料である。SUMMARY OF THE INVENTION The present invention provides a self-lubricating wear-resistant material characterized by dispersing an alkaline earth metal fluoride as a solid lubricant in a high-speed steel powder matrix. The present invention is a self-lubricating wear-resistant material in a high-speed steel (a so-called sintered high-speed material) made of a powder material, in which a fluoride of an alkaline earth metal is uniformly distributed as a solid lubricant. A material characterized in that the solid lubricant is a fluoride of an alkaline earth metal such as CaF 2 or BaF 2 .
【０００７】固体潤滑剤は、一般に、金属と金属の間に
おいて膜として存在して摩擦と摩耗を小さくする硫化
物、グラファイト、フッ素樹脂などの物質である。固体
潤滑剤を、高速度鋼粉末の中に均一に分散させるために
は、ＨＩＰインゴットや焼結材料を製造する過程で、分
解や反応により変質しては目的の特性が得られないた
め、熱的・化学的に安定な材料である必要がある。硫化
物系固体潤滑剤は数百℃の温度で分解し、より結合しや
すい母材の鉄の硫化物を作るため、本来の特性を得るこ
とができない。また軟質金属の鉛、亜鉛等も融点が低い
ため、母材の焼結が進行する以前に溶融し、表面張力に
より粗大化して微細に分散できなかったり、母材の鉄と
の金属間化合物を作り、本来の特性を得ることができな
い問題がある。グラファイトも同様に分解や母材の鉄材
との反応の問題がある。これに対し、従来一般的でなか
った弗化物は熱的・化学的に安定であり、変質させるこ
となく微細に分散することができ、さらに摺動特性は上
記固体潤滑剤よりは若干劣るものの広い温度範囲で安定
している。弗化物と高速度鋼粉末を結合するため熱によ
り弗化物が溶融し若干粗大化するのを防ぐためには、融
点の高い弗化物を使用することが好ましく、それに適し
ているものはＣａＦ2 （融点：１４０２℃）、ＭｇＦ2
（融点：１２６６℃）、ＳｒＦ2 （融点：１１９０
℃）、ＢａＦ2 （融点：１３２０℃）等のアルカリ土類
金属の弗化物である。これらの弗化物は、程度の差はあ
るがいずれも同様の作用を持つので、いずれのものでも
単独もしくは複合して使用して差し支えないが、複合し
て使用する場合は、共融により融点が低下するので、そ
の融点がＨＩＰ処理以下にならないようにすることが好
ましい。[0007] The solid lubricant is generally a substance such as sulfide, graphite, and fluororesin which exists as a film between the metals and reduces friction and wear. In order to uniformly disperse the solid lubricant in the high-speed steel powder, in the process of manufacturing the HIP ingot and the sintered material, the properties cannot be obtained by decomposing or reacting to obtain the desired properties. The material must be stable chemically and chemically. The sulfide-based solid lubricant decomposes at a temperature of several hundred degrees Celsius to form a base metal sulfide which is more easily bonded, and thus cannot obtain the original characteristics. Also, since the melting points of soft metals such as lead and zinc are low, they melt before the sintering of the base material progresses, become coarse due to surface tension and cannot be finely dispersed, or form intermetallic compounds with iron of the base material. There is a problem that the original characteristics cannot be obtained. Graphite also has problems of decomposition and reaction with the base material iron. On the other hand, fluoride, which has not been generally used in the past, is thermally and chemically stable, can be finely dispersed without deteriorating, and has a wider sliding property, though slightly inferior to the above-mentioned solid lubricant. Stable over temperature range. To prevent the slight coarsening fluoride is melted by heat for bonding the fluoride and high speed steel powder, it is preferable to use a high melting point fluorides, CaF 2 (melting point which is suitable to it 1402 ° C.), MgF 2
(Melting point: 1266 ° C.), SrF 2 (melting point: 1190)
C.), BaF 2 (melting point: 1320 ° C.) and the like. All of these fluorides have similar effects, albeit with varying degrees, so that any of them may be used alone or in combination. Therefore, it is preferable that the melting point does not fall below the HIP treatment.
【０００８】固体潤滑剤の量は１Ｖｏｌ％未満ではその
効果が充分でなく、また２０Ｖｏｌ％を越えると材料の
強度が低下すると共に、インゴットを押出し・引抜き加
工をする際に、割れが発生しやすくなるため好ましくな
い。そこで好ましい添加量は１〜２０Ｖｏｌ％とした。
また、固体潤滑剤の粒径は、見掛けの径で１００μｍ以
上となると、使用時に割れ脱落しやすくなるので、上限
は１００μｍが好ましい。下限については特に規定しな
いが、下記に示す実施例で使用したものでは、粒径１μ
ｍ程度の微粉が含まれていた。粒度分布としては５〜２
０μｍにピークを持つものが、押出し・引抜き加工をし
易く好ましい。When the amount of the solid lubricant is less than 1% by volume, its effect is not sufficient, and when it exceeds 20% by volume, the strength of the material is reduced, and cracks are easily generated when the ingot is extruded or drawn. Is not preferred. Therefore, a preferable addition amount is 1 to 20 Vol%.
Further, if the apparent particle diameter of the solid lubricant is 100 μm or more, the solid lubricant is liable to crack and fall off during use. Therefore, the upper limit is preferably 100 μm. Although the lower limit is not particularly specified, the particles used in the following examples have a particle diameter of 1 μm.
m of fine powder was contained. 5-2 as particle size distribution
Those having a peak at 0 μm are preferable because they can be easily extruded and drawn.
【０００９】基地となる高速度鋼粉末の成分については
特に規定しない。高速度鋼粉末と弗化物粉末を耐摩耗材
料に調製するためには、これらの混合粉末をＨＩＰ（Ho
t Isostatic Press ）又はＣＩＰ(Cold Isostatic Pres
s)により等方的に圧縮することが好ましい。ＣＩＰ又は
ＨＩＰ処理後は、ホットプレス、押出などにより所望の
寸法にさらに成形することができる。さらに、高速度鋼
の特殊炭化物を析出させる焼もどしなどの周知の熱処理
を必要により行うことができる。その後切断、研摩、ろ
う付け、かしめなどの最終加工を行ってロータリーコン
プレッサー用ベーンや、バルブリフター、タペット又は
ロッカーアームパッドなどの動弁機構部品を提供するこ
とができる。The composition of the high-speed steel powder serving as the base is not particularly specified. In order to prepare high-speed steel powder and fluoride powder as wear-resistant materials, these mixed powders are mixed with HIP (Ho
t Isostatic Press) or CIP (Cold Isostatic Pres
It is preferred to compress isotropically according to s). After the CIP or HIP treatment, it can be further formed into desired dimensions by hot pressing, extrusion, or the like. Further, a known heat treatment such as tempering to precipitate a special carbide of the high-speed steel can be performed if necessary. Thereafter, final processing such as cutting, polishing, brazing, and caulking can be performed to provide a rotary compressor vane and a valve operating mechanism component such as a valve lifter, a tappet or a rocker arm pad.
【００１０】[0010]
【作用】それ自身の耐摩耗性がすぐれた高速度鋼基地中
に、耐熱性が良好でありかつ自己潤滑性を有するアルカ
リ土類弗化物を分散させることにより苛酷な潤滑条件で
も焼付を起こし難い、自己潤滑性耐摩耗材料が得られ
た。以下、実施例によりさらに詳しく本発明を説明す
る。[Function] By dispersing an alkaline earth fluoride having good heat resistance and self-lubricating property in a high-speed steel base having excellent wear resistance, seizure hardly occurs even under severe lubricating conditions. Thus, a self-lubricating wear-resistant material was obtained. Hereinafter, the present invention will be described in more detail with reference to examples.
【００１１】[0011]
【実施例】ガスアトマイズ法によるＳＫＨ５１相当の合
金粉（平均粒径１５０μｍ）に固体潤滑剤としてＣａＦ
2 （平均粒径１２μｍ）を５Ｖｏｌ％加え混合したもの
を、軟鋼製のカップ状容器に詰め、内部を真空に減圧
後、封印した。この容器をＨＩＰ装置にて、９５０℃で
１時間予熱後１１７０℃、１５０ＭＰａで加圧加熱を行
いインゴットを作成した。このインゴットを切削加工に
より軟鉄製容器の部分を除去した後、ホットプレスにて
加熱押出しを行い、板材を作製した。この板材よりテス
トピースを切り出し、焼入れ、焼戻し後、ロータリー式
コンプレッサーでの使用を想定した表１に示す条件で評
価試験を行った。この際、比較用として固体潤滑剤を含
まない粉末ハイス製のＳＫＨ５１材についても同様のテ
ストピースを作り評価した。EXAMPLE An alloy powder equivalent to SKH51 (average particle size 150 μm) prepared by gas atomization was used as a solid lubricant with CaF
2 (average particle size: 12 μm) was added and mixed in a volume of 5 Vol%, and the mixture was packed in a mild steel cup-shaped container. The container was preheated at 950 ° C. for 1 hour using a HIP apparatus, and then heated under pressure at 1170 ° C. and 150 MPa to form an ingot. After removing the portion of the soft iron container from the ingot by cutting, the plate was heated and extruded by a hot press to produce a plate material. A test piece was cut out from this plate, quenched, and tempered, and an evaluation test was performed under the conditions shown in Table 1 assuming use in a rotary compressor. At this time, a similar test piece was prepared and evaluated for SKH51 material made of powdered high-speed steel containing no solid lubricant for comparison.
【００１２】[0012]
【表１】 評価試験条件 [Table 1] Evaluation test conditions
【００１３】試験の結果を表２に示す。Table 2 shows the results of the test.
【００１４】[0014]
【表２】 [Table 2]
【００１５】その結果、潤滑条件では差がないものの、
局圧下で潤滑油膜が切れたことを想定した無潤滑での条
件では、比較材は１ｋｍ時点で焼き付きが発生し、摩耗
も多いのに対し、本発明材は焼き付きは発生しなかっ
た。As a result, although there is no difference in lubrication conditions,
Under non-lubricating conditions assuming that the lubricating oil film was broken under the local pressure, the comparative material was seized at 1 km and had much wear, whereas the material of the present invention did not seize.
【００１６】[0016]
【発明の効果】以上説明したように、本発明による耐摩
耗性材料は、潤滑条件が劣悪な条件において優れた耐摩
耗性及び耐焼付性を発揮する。さらに、本発明の耐摩耗
性材料は通常の粉末冶金的方法により製造可能であり、
ＰＶＤのような複雑な機構の装置を必要としないので、
生産性が高い。As described above, the wear-resistant material according to the present invention exhibits excellent wear resistance and seizure resistance under poor lubrication conditions. Further, the wear-resistant material of the present invention can be manufactured by a usual powder metallurgy method,
Since it does not require devices with complicated mechanisms like PVD,
High productivity.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｆ０４Ｃ 18/344 ３５１ Ｆ０４Ｃ 18/356 Ｗ 18/356 Ｂ２２Ｆ 5/00 Ｃ ──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. 6 Identification code FI F04C 18/344 351 F04C 18/356 W 18/356 B22F 5/00 C
Claims (6)
化物を高速度鋼粉末基地に分散したことを特徴とする自
己潤滑性耐摩耗材料。1. A self-lubricating wear-resistant material characterized in that a fluoride of an alkaline earth metal is dispersed in a high-speed steel powder matrix as a solid lubricant.
ある請求項１記載の自己潤滑性耐摩耗材料。2. The self-lubricating wear-resistant material according to claim 1, wherein the amount of the solid lubricant is 1 to 20% by volume.
ルカリ土類金属の弗化物の混合粉末をＣＩＰもしくはＨ
ＩＰ処理することを特徴とする自己潤滑性耐摩耗材料の
製造方法。3. A mixed powder of a high speed steel powder and an alkaline earth metal fluoride as a solid lubricant is mixed with CIP or H
A method for producing a self-lubricating wear-resistant material, characterized by performing IP treatment.
耐摩耗材料を含んでなるロータリーコンプレッサー用ベ
ーン。4. A rotary compressor vane comprising the self-lubricating wear-resistant material according to claim 1.
耐摩耗材料を含んでなる動弁部品用摺動部品。5. A sliding component for a valve train component, comprising the self-lubricating wear-resistant material according to claim 1.
ト又はロッカーアームパッドである請求項５記載の摺動
部品。6. The sliding component according to claim 5, wherein the valve operating component is a valve lifter, a tappet, or a rocker arm pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26530897A JPH11106877A (en) | 1997-09-30 | 1997-09-30 | Self-lubricative wear resistant material and its production as well as sliding part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26530897A JPH11106877A (en) | 1997-09-30 | 1997-09-30 | Self-lubricative wear resistant material and its production as well as sliding part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11106877A true JPH11106877A (en) | 1999-04-20 |
Family
ID=17415401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26530897A Pending JPH11106877A (en) | 1997-09-30 | 1997-09-30 | Self-lubricative wear resistant material and its production as well as sliding part |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11106877A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2006001342A1 (en) * | 2004-06-28 | 2008-04-17 | 松下電器産業株式会社 | Air pump |
-
1997
- 1997-09-30 JP JP26530897A patent/JPH11106877A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2006001342A1 (en) * | 2004-06-28 | 2008-04-17 | 松下電器産業株式会社 | Air pump |
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