JPH04168295A - Plain bearing - Google Patents
Plain bearingInfo
- Publication number
- JPH04168295A JPH04168295A JP29271690A JP29271690A JPH04168295A JP H04168295 A JPH04168295 A JP H04168295A JP 29271690 A JP29271690 A JP 29271690A JP 29271690 A JP29271690 A JP 29271690A JP H04168295 A JPH04168295 A JP H04168295A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- sliding bearing
- boundary layer
- surface layer
- alloy
- 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.)
- Granted
Links
- 239000010410 layer Substances 0.000 claims abstract description 54
- 239000002344 surface layer Substances 0.000 claims abstract description 28
- 229910018956 Sn—In Inorganic materials 0.000 claims abstract description 18
- 239000006104 solid solution Substances 0.000 claims description 17
- 229910000846 In alloy Inorganic materials 0.000 claims description 8
- 229910045601 alloy Inorganic materials 0.000 abstract description 9
- 239000000956 alloy Substances 0.000 abstract description 9
- 229910052718 tin Inorganic materials 0.000 abstract description 5
- 238000002485 combustion reaction Methods 0.000 abstract description 3
- 239000007787 solid Substances 0.000 abstract 2
- 239000000463 material Substances 0.000 description 10
- 238000007747 plating Methods 0.000 description 7
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- 238000009792 diffusion process Methods 0.000 description 6
- 229910000765 intermetallic Inorganic materials 0.000 description 6
- 230000004888 barrier function Effects 0.000 description 5
- 238000005204 segregation Methods 0.000 description 5
- 239000002356 single layer Substances 0.000 description 5
- 238000009713 electroplating Methods 0.000 description 4
- 229910052738 indium Inorganic materials 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000002441 X-ray diffraction Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000000694 effects 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
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005496 eutectics Effects 0.000 description 2
- NNFCIKHAZHQZJG-UHFFFAOYSA-N potassium cyanide Chemical compound [K+].N#[C-] NNFCIKHAZHQZJG-UHFFFAOYSA-N 0.000 description 2
- DDFHBQSCUXNBSA-UHFFFAOYSA-N 5-(5-carboxythiophen-2-yl)thiophene-2-carboxylic acid Chemical compound S1C(C(=O)O)=CC=C1C1=CC=C(C(O)=O)S1 DDFHBQSCUXNBSA-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229920001353 Dextrin Polymers 0.000 description 1
- 239000004375 Dextrin Substances 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- 229910004039 HBF4 Inorganic materials 0.000 description 1
- 229910020220 Pb—Sn Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000000573 anti-seizure effect Effects 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 235000019425 dextrin Nutrition 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- PSCMQHVBLHHWTO-UHFFFAOYSA-K indium(iii) chloride Chemical compound Cl[In](Cl)Cl PSCMQHVBLHHWTO-UHFFFAOYSA-K 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
Ａ０発明の目的
（１）産業上の利用分野
本発明はすべり軸受、特に、ライニング層上に、境界層
を介してＰｂ−３ｎ−Ｉｎ合金よりなる表面層を有する
すべり軸受の改良に関する。Detailed Description of the Invention A0 Object of the Invention (1) Industrial Application Field The present invention relates to a sliding bearing, particularly a sliding bearing having a surface layer made of a Pb-3n-In alloy on a lining layer with a boundary layer interposed therebetween. Regarding improvements to bearings.
この種すべり軸受は、主として内燃機関におけるクラン
クシャフトのジャーナル部、コンロッドの大端部等に適
用される。This type of sliding bearing is mainly applied to a journal portion of a crankshaft, a large end portion of a connecting rod, etc. in an internal combustion engine.
（２）従来の技術
従来、前記すべり軸受の製造に当っては、例えばライニ
ング層上に、Ｐｂ−Ｓｎ合金層とＩｎ単体層（またはＩ
ｎ−３ｎ合金層）とを電気メンキにより順次形成して軸
受素材を製作し、次いで、その素材に熱拡散処理を施す
、といった方法が採用されている。(2) Prior Art Conventionally, in manufacturing the above-mentioned sliding bearing, for example, a Pb-Sn alloy layer and an In single layer (or an I
A method has been adopted in which a bearing material is manufactured by sequentially forming a bearing material (n-3n alloy layer) by electric polishing, and then the material is subjected to a thermal diffusion treatment.
前記熱拡散処理によって、Ｐｂ−３ｎ−Ｉｎ合金よりな
る表面層が形成され、その際、ＩｎおよびＳｎの偏析に
よって境界層が形成される。A surface layer made of a Pb-3n-In alloy is formed by the thermal diffusion treatment, and a boundary layer is formed by segregation of In and Sn.
（３）発明が解決しようとする課題
本発明者等は前記境界層について種々検討を加えた結果
、その境界層は表面層の耐剥離性、強度等に直接影響を
与える重要なファクタであり、その境界層の構成要素で
あるＳｎ−Ｉｎ偏析物の金属組織的形態の如何によって
、すべり軸受の耐焼付き性が大いに左右されることを究
明した。(3) Problems to be Solved by the Invention The present inventors have conducted various studies regarding the boundary layer, and have found that the boundary layer is an important factor that directly affects the peeling resistance, strength, etc. of the surface layer. It has been found that the seizure resistance of a plain bearing is greatly influenced by the metallographic form of Sn-In segregation, which is a component of the boundary layer.
本発明はこのような観点よりなされたもので、前記境界
層の構成要素であるＳｎ−Ｉｎ偏析物の金属組織的形態
を特定することによって、耐焼付き性を大幅に向上させ
得るようにした前記すべり軸受を提供することを目的と
する。The present invention has been made from this point of view, and by specifying the metallographic form of the Sn-In segregation that is a component of the boundary layer, it is possible to significantly improve the seizure resistance. The purpose is to provide sliding bearings.
Ｂ０発明の構成
（１）課題を解決するための手段
本発明は、ライニング層上に、境界層を介してＰｂ−３
ｎ−Ｉｎ合金よりなる表面層を有するすべり軸受におい
て、前記境界層の少なくとも前記表面層との界面側を、
５２重量％以上のＳｎを含有するＳｎ−Ｉｎ固溶体より
構成したことを特徴とする。B0 Structure of the Invention (1) Means for Solving the Problems The present invention provides Pb-3 on the lining layer via the boundary layer.
In a sliding bearing having a surface layer made of an n-In alloy, at least the interface side of the boundary layer with the surface layer,
It is characterized by being composed of a Sn--In solid solution containing 52% by weight or more of Sn.
（２）作 用
前記のように、境界層の少なくとも表面層との界面側を
特定量のＳｎを含有するＳｎ−Ｉｎ固溶体より構成する
と、そのＳｎ−Ｉｎ固溶体が表面層との密着性が良いこ
とに起因して表面層の耐剥離性が高められる。またＳｎ
−Ｉｎ固溶体は表面層を構成するＰｂ−３ｎ−Ｉｎ合金
の組成バランスを崩すことがないので、表面層の強度、
耐食性等の低下が回避される。(2) Effect As mentioned above, when at least the interface side of the boundary layer with the surface layer is composed of a Sn-In solid solution containing a specific amount of Sn, the Sn-In solid solution has good adhesion with the surface layer. Due to this, the peeling resistance of the surface layer is improved. Also Sn
-In solid solution does not disturb the compositional balance of the Pb-3n-In alloy that constitutes the surface layer, so the strength of the surface layer
Deterioration of corrosion resistance etc. is avoided.
これにより、すべり軸受の耐焼付き性を大幅に向上させ
ることが可能である。Thereby, it is possible to significantly improve the seizure resistance of the sliding bearing.
た＼し、Ｓｎ−Ｉｎ固溶体におけるＳｎ含有量が５２重
量％未満になると、そのＳｎ含有量が共晶点である４９
％に近似するため、Ｓｎ−Ｉｎ固溶体の耐熱性が低下し
て、結果的にすべり軸受の耐焼付き性が悪化する。However, when the Sn content in the Sn-In solid solution is less than 52% by weight, the Sn content is at the eutectic point49
%, the heat resistance of the Sn-In solid solution decreases, and as a result, the seizure resistance of the sliding bearing deteriorates.
（３）実施例
第１．第２図において、すべり軸受１は、エンジンにお
けるクランクシャフトのジャーナル部、コンロンドの大
端部等に通用されるもので、第１および第２半体Ｉ１．
１□よりなる。両半体１゜、１□は同一構造を有し、裏
金２の相手部材との摺動面倒に順次、ライニング層３、
Ｎｉメツキバリヤ層４、境界層５および表面層６を形成
したものである。必要に応じて、裏金２およびライニン
グ層３間にはＣｕメツキ層が形成され、またライニング
層３および境界層５間のＮｉメツキバリヤ層４を省くこ
ともある。(3) Example 1. In FIG. 2, a sliding bearing 1 is commonly used in a journal part of a crankshaft, a large end part of a connecting rod, etc. in an engine, and is used in first and second halves I1.
Consists of 1□. Both halves 1° and 1□ have the same structure, and are sequentially coated with lining layers 3,
A Ni plating barrier layer 4, a boundary layer 5 and a surface layer 6 are formed. If necessary, a Cu plating layer is formed between the back metal 2 and the lining layer 3, and the Ni plating barrier layer 4 between the lining layer 3 and the boundary layer 5 may be omitted.
裏金２は圧延鋼板より構成され、その厚さはすべり軸受
１の設定厚さにより決められる。ライニング層３はＣｕ
、Ｃｕ合金、Ａｊ！、Ａ１合金等より構成され、その厚
さは５０〜５００μｍ、通常は３００μｍ程度である。The backing metal 2 is made of a rolled steel plate, and its thickness is determined by the set thickness of the sliding bearing 1. Lining layer 3 is Cu
, Cu alloy, Aj! , A1 alloy, etc., and its thickness is 50 to 500 μm, usually about 300 μm.
境界層５はＳｎ−Ｉｎ偏析物より構成され、その厚さは
２μｍ以下である。また表面層６はＰｂ−３ｎ−Ｉｎ合
金より構成され、その厚さは５〜５０μｍ、通常は２０
μｍ程度である。The boundary layer 5 is composed of Sn--In segregation and has a thickness of 2 μm or less. The surface layer 6 is made of a Pb-3n-In alloy and has a thickness of 5 to 50 μm, usually 20 μm.
It is about μm.
表面層６を構成するＰｂ−３ｎ−Ｉｎ合金は、２〜１２
重量％のＳｎ、１〜１０重量％のＩｎおよび残部ｐｂと
いった組成を有する。The Pb-3n-In alloy constituting the surface layer 6 is 2 to 12
It has a composition of % Sn by weight, 1-10% In by weight, and the balance PB.
この種すべり軸受１、したがって半体１．．１２の製造
に当っては、第３図に示すようにライニング層３上に、
Ｎｉメツキバリヤ層４を介してＰｂ−３ｎ合金層７と、
Ｉｎ単体層８とを電気メツキにより順次形成して軸受素
材１゜を製作し、次いでその素材１゜に熱拡散処理を施
すものである。This type of plain bearing 1 and hence the half body 1. ．． 12, on the lining layer 3, as shown in FIG.
Pb-3n alloy layer 7 via Ni plating barrier layer 4,
A 1° bearing material is manufactured by sequentially forming In single layers 8 by electroplating, and then the material 1° is subjected to a thermal diffusion treatment.
Ｐｂ−３ｎ合金層７を形成するためのメツキ液としては
、
ホウフッ化鉛Ｐｂ（ＢＦ４）ｚ ・・・・・・・・・
１５０ｇ’＃２ホウフッ化スズＳｎ（ＢＦ４）ｚ・・・
・・・・・・・・・２５ ｇ／Ｊ２ホウフッ酸ＨＢＦ４
・・・・・・・・・・・・・・・・・・・・・・・・５
０ｇ／ｌハイドロキノン ・・・・・・・・・・・・・
・・・・・・・・・・・・・・２ ｇ／４２ゼラチン
・・・・・・・・・・・・・・・・・・・・・・・・・
・・１ｇ／２ベ ブ ト ン ・・・・・・
・・・・・・・・・・・・・・・・・・・・・ １ ｇ
７ｉβ−ナフトール ・・・・・・・・・・・・・・・
・・・・・・・・・・・・１ ｇ＃！よりなる溶液が用
いられ、電気メツキにおける電流密度は１〜ＩＯＡ／ｄ
ｎ？に設定される。The plating solution for forming the Pb-3n alloy layer 7 is lead borofluoride Pb(BF4)z...
150g'#2 Tin borofluoride Sn (BF4)z...
・・・・・・・・・25 g/J2 borofluoric acid HBF4
・・・・・・・・・・・・・・・・・・・・・・・・5
0g/l hydroquinone ・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・2 g/42 gelatin
・・・・・・・・・・・・・・・・・・・・・・・・
・・1g/2beton ・・・・・・
・・・・・・・・・・・・・・・・・・・・・ 1 g
7iβ-naphthol ・・・・・・・・・・・・・・・
・・・・・・・・・・・・1 g#! The current density in electroplating is 1 to IOA/d.
n? is set to
Ｉｎ単体層８を形成するためのメンキ液としては、
ホウフッ化インジウムＩｎ（ＢＦ４）ユ ・・・２００
ｇ／ｆｆｉホウフフ化アンモニウムＮＨ，ＢＦ４・・
・・・・３５ｇ／ｌホ ウ 酸 Ｈ，ＢＯ，・
・・・・・・・・・・・・・・・・・・・・ ２０ｇ／
ｌホウフッ酸（ＨＢＦ、） ・・・・・・・・・・・
・・・・・・・・・・２０ ｇ ／ Ｉ！。As the Menki liquid for forming the In single layer 8, indium borofluoride In (BF4)...200
g/ffi ammonium fluoride NH, BF4...
・・・35g/l boric acid H, BO,・
・・・・・・・・・・・・・・・・・・・・・ 20g/
lBorofluoric acid (HBF, ) ・・・・・・・・・・・・
・・・・・・・・・20 g/I! .
よりなる溶液が用いられ、電気メツキにおける電流密度
は５〜ＩＯＡ／ｄｒｒｒに設定される。The current density in electroplating is set at 5 to IOA/drrr.
またＩｎ単体層８を形成するための他のメツキ液として
は、アルカリシアンメツキ液である、塩化インジウムＩ
ｎＣｌ！、、・・・・・・・・・・・・５０ ｇ／ｊ２
シアン化カリウムＫＣＮ・・・・・・・・・・・・１５
０ ｇ／１２水酸化カリウムＫＯＨ・・・・・・・・・
・・・・・・４０ ｇ／ｊ２デキストリン ・・・・・
・・・・・・・・・・・・・・・・・・・・・・３０ｇ
／ｌよりなる溶液が用いられ、電気メツキにおける電流
密度は１〜ＩＯＡ／ｄｒｄに設定される。Other plating solutions for forming the In single layer 8 include alkaline cyan plating solution, indium chloride I
nCl! ,,・・・・・・・・・50 g/j2
Potassium cyanide KCN・・・・・・・・・・・・15
0 g/12 Potassium hydroxide KOH・・・・・・・・・
・・・・・・40 g/j2 dextrin ・・・・・・
・・・・・・・・・・・・・・・・・・・・・30g
/l solution is used, and the current density in electroplating is set to 1 to IOA/drd.
熱拡散処理は、処理温度１２０〜２００°Ｃ１処理時間
１０〜７０分間の条件下に、軸受素材１゜を保持してＰ
ｂ−３ｎ合金層７およびＩｎ単体層８間に金属相互拡散
を生じさせるもので、この処理によりＰｂ−３ｎ−Ｉｎ
合金よりなる表面層６が形成され、その際ＩｎおよびＳ
ｎの偏析によって境界層５が形成される。この場合、Ｐ
ｂ、Ｓｎ、Ｉｒ＋のライニング層３側への拡散はＮｉメ
ンキバリヤ層４によって阻止される。Thermal diffusion treatment is performed by holding the bearing material at 1° under conditions of a treatment temperature of 120 to 200°C and a treatment time of 10 to 70 minutes.
This process causes metal interdiffusion between the b-3n alloy layer 7 and the In single layer 8, and this process causes the Pb-3n-In
A surface layer 6 made of an alloy is formed, with In and S
A boundary layer 5 is formed by the segregation of n. In this case, P
Diffusion of B, Sn, and Ir+ toward the lining layer 3 is prevented by the Ni barrier layer 4.
前記と同一構成の複数の軸受素材１゜を製作し、熱拡散
処理における処理温度を１５０°Ｃに設定すると共に処
理時間を種々変えてすべり軸受Ｉ〜■を得た。A plurality of bearing materials 1° having the same configuration as above were manufactured, and the treatment temperature in the heat diffusion treatment was set at 150°C, and the treatment time was varied to obtain sliding bearings I to ①.
表Ｉは、各すべり軸受■〜■における前記処理時間と境
界層５を構成するＳｎ−Ｉｎ偏析物との関係を示す。こ
の場合の境界層５の厚さは０．５μｍである。Table I shows the relationship between the processing time and the Sn--In segregated substances constituting the boundary layer 5 for each of the sliding bearings (1) to (2). The thickness of the boundary layer 5 in this case is 0.5 μm.
表中、ＩｎｚＮｔｚおよびＩｎＳｎｎは金属間化合物で
ある。In the table, InzNtz and InSnn are intermetallic compounds.
表 ■
表■はすべり軸受■、■、■のＸ線回折結果を示す。こ
の結果は、ＪＣＰＤＳ （ジヨイント・コミンティ・パ
ウダ・デイフラクト・スタンダーズ）による。Table ■ Table ■ shows the X-ray diffraction results of sliding bearings ■, ■, and ■. This result is based on JCPDS (Joint Committee Powder Defect Standards).
表 ■
すべり軸受■の境界層５は、表■よりＳｎ−Ｉｎ固溶体
より構成され、またすべり軸受■の境界層５は、表■よ
りＳｎ−Ｉｎ固溶体と金属間化合物Ｉｎ３Ｎｉ、とより
構成され、さらにすべり軸受■の境界層５は、表■より
二種の金属間化合物ＩｎＳｎ４およびＩｎｚＮｉｚより
構成されることが判る。第４図はすべり軸受■における
境界層５のＸ線回折図である。From Table ■, the boundary layer 5 of the sliding bearing ■ is composed of a Sn-In solid solution, and from the Table ■, the boundary layer 5 of the sliding bearing ■ is composed of a Sn-In solid solution and the intermetallic compound In3Ni, Furthermore, it can be seen from Table 1 that the boundary layer 5 of the sliding bearing 1 is composed of two types of intermetallic compounds InSn4 and InzNiz. FIG. 4 is an X-ray diffraction diagram of the boundary layer 5 in the sliding bearing (2).
表■は、各すべり軸受１〜■のテスト結果を示す。Table (2) shows the test results for each sliding bearing 1 to (2).
実機テストは、各すべり軸受を、４サイクル内燃機関に
おけるコンロッドの大端部に適用し、機関回転数をゼロ
から８０００ｒｐ−まで上昇させ、これを１０回繰返す
ことにより行われた。The actual machine test was conducted by applying each sliding bearing to the large end of a connecting rod in a four-stroke internal combustion engine, increasing the engine speed from zero to 8000 rpm, and repeating this 10 times.
単体テストは、回転軸に各すべり軸受を摺擦させ、その
すべり軸受に対する負荷荷重を漸次増加させることによ
り行われた。The unit test was conducted by sliding each sliding bearing on the rotating shaft and gradually increasing the load applied to the sliding bearing.
単体テスト条件は次の通りである。回転軸の材質 ＪＩ
Ｓ ５４８Ｃ材に窒化処理を施したもの、回転軸の回
転数 ６００Ｏｒｐｍ、給油温度 １２ｏ ”ｃ、給油
圧力 ３ ｋｇ／ｃｄ、負荷荷重 １ｋｇ／ｓｅｃ。The unit test conditions are as follows. Rotating shaft material JI
Nitrided S548C material, rotating shaft rotation speed 600 rpm, oil supply temperature 12o''c, oil supply pressure 3 kg/cd, applied load 1 kg/sec.
表■の単体テストにおける数値は、すべり軸受■の焼付
き発生面圧を１００として表わしである。The numerical values in the unit test in Table (2) are expressed with the surface pressure at which seizure occurs in the sliding bearing (2) as 100.
表 ■
第５図は、単体テストを行った場合の各すべり軸受１〜
■における境界層５のＳｎ含有量と焼付き発生面圧との
関係を示す。Table ■ Figure 5 shows the results of each sliding bearing 1 to 1 when performing a unit test.
The relationship between the Sn content of the boundary layer 5 and the surface pressure at which seizure occurs in (2) is shown.
表■および第５図より、すべり軸受■〜■は優れた耐焼
付き性を示すことが明らかであり、このような好結果を
得るためには境界層５の少なくとも表面層６側を、５２
重量％以上のＳｎを含有するＳｎ−Ｉｎ固溶体より構成
することが必要である。It is clear from Table 1 and FIG.
It is necessary to constitute the Sn--In solid solution containing Sn in an amount of at least % by weight.
その理由は、特定量のＳｎを含有するＳｎ−Ｉｎ固溶体
は表面層６との密着性が良いため表面層６の耐剥離性が
高められ、またＳｎ−Ｉｎ固溶体は表面層６を構成する
Ｐｂ−３ｎ−Ｉｎ合金の組成バランスを崩すことがない
ので、表面層６の強度、耐食性等の低下が回避されるか
らである。The reason for this is that the Sn-In solid solution containing a specific amount of Sn has good adhesion with the surface layer 6, which increases the peeling resistance of the surface layer 6, and the Sn-In solid solution has good adhesion to the surface layer 6. This is because the compositional balance of the -3n-In alloy is not disturbed, so deterioration of the strength, corrosion resistance, etc. of the surface layer 6 is avoided.
耐焼付き性向上の観点より、Ｓｎ−Ｉｎ固溶体における
Ｓｎ含有量の上限値は６８重量％に設定され、好ましい
Ｓｎ含有量は５４重量％以上、６６重量％以下である。From the viewpoint of improving seizure resistance, the upper limit of the Sn content in the Sn-In solid solution is set to 68% by weight, and the preferable Sn content is 54% by weight or more and 66% by weight or less.
すべり軸受■の境界Ｎ５は金属間化合物！ｎｘＮ１□を
含んでいるが、表面層６との界面側はＳｎ−Ｉｎ固溶体
より構成され、一方、ＩｎゴＮｉ２はＮｉメンキバリヤ
層４の界面側に形成されている、この金属間化合物Ｉｎ
ｚＮｉｚはすべり軸受の耐焼付き性には同等影響を与え
ない。Boundary N5 of sliding bearing ■ is an intermetallic compound! nxN1□, but the interface side with the surface layer 6 is composed of a Sn-In solid solution, while IngoNi2 is formed on the interface side of the Ni barrier layer 4. This intermetallic compound In
zNiz does not have the same effect on the seizure resistance of plain bearings.
すべり軸受Ｉの境界層５はＳｎ−Ｉｎ固溶体より構成さ
れているが、その固溶体におけるＳｎ含有量は５０重量
％であって共晶点４９重量％に近似しており、その結果
、すべり軸受■は境界層５におけるＳｎ含有量の不足に
起因して耐熱性が低く、結果的にすべり軸受■〜■に比
べて耐焼付き性が劣る。The boundary layer 5 of the sliding bearing I is composed of a Sn-In solid solution, and the Sn content in the solid solution is 50% by weight, which is close to the eutectic point of 49% by weight, and as a result, the sliding bearing I The heat resistance is low due to the insufficient Sn content in the boundary layer 5, and as a result, the seizure resistance is inferior to the plain bearings ① to ②.
すべり軸受Ｖ〜■の境界層５においては、Ｓｎ含有量が
６８重量％を上回っており、それに起因して金属間化合
物ＩｎＳｎ４が生成され、その■ｎＳｎ４が表面層６の
密着性を弱め、また表面層６を構成するＰｂ−３ｎ−Ｉ
ｎ合金の組成バランスを崩して表面層６の強度、耐食性
等を低下させている。その結果、すべり軸受Ｖ〜■の耐
焼付き性が悪化するのである。In the boundary layer 5 of the sliding bearings V to ■, the Sn content exceeds 68% by weight, and as a result, an intermetallic compound InSn4 is generated, which weakens the adhesion of the surface layer 6, and Pb-3n-I constituting the surface layer 6
This disrupts the compositional balance of the n-alloy and reduces the strength, corrosion resistance, etc. of the surface layer 6. As a result, the anti-seizure properties of the sliding bearings V to (2) deteriorate.
Ｃ０発明の効果
本発明によれば、ライニング層および表面層間に存する
境界層の構成を前記のように特定することによって、耐
焼付き性を大幅に向上させたすべり軸受を提供すること
ができる。C0 Effects of the Invention According to the present invention, by specifying the structure of the boundary layer existing between the lining layer and the surface layer as described above, it is possible to provide a sliding bearing with significantly improved seizure resistance.
第１．第２図はすべり軸受を示し、第１図は分解平面図
、第２図は第１図■−■線断面図、第３図は第２図に対
応する軸受素材の断面図、第４図はＸ線回折図、第５図
は境界層のＳｎ含有量と焼付き発生面圧との関係を示す
グラフである。
１・・・すべり軸受、３・・・ライニング層、５・・・
境界層、６・・・表面層
特 許 出 願 人 本田技研工業株式会社代理人
弁理士 落 合 健同
仁 木 −明第１図
Ｈ
第３図 第２図
第４図
・： ＩｎＪｉｚ
−一−−−−→−２ｅ1st. Figure 2 shows a plain bearing, Figure 1 is an exploded plan view, Figure 2 is a sectional view taken along the line ■-■ in Figure 1, Figure 3 is a sectional view of the bearing material corresponding to Figure 2, and Figure 4. is an X-ray diffraction diagram, and FIG. 5 is a graph showing the relationship between the Sn content of the boundary layer and the surface pressure at which seizure occurs. 1... Sliding bearing, 3... Lining layer, 5...
Boundary layer, 6...Surface layer patent Applicant Agent for Honda Motor Co., Ltd.
Patent Attorney Kendo Ochiai
InJiz -1 Figure 1 H Figure 3 Figure 2 Figure 4: InJiz -1---→-2e
Claims (2)
Ｉｎ合金よりなる表面層を有するすべり軸受において、
前記境界層の少なくとも前記表面相との界面側を、５２
重量％以上のＳｎを含有するＳｎ−Ｉｎ固溶体より構成
したことを特徴とするすべり軸受。(1) On the lining layer, Pb-Sn-
In a sliding bearing having a surface layer made of In alloy,
At least the interface side with the surface phase of the boundary layer is 52
A sliding bearing characterized in that it is made of a Sn-In solid solution containing at least % by weight of Sn.
値を６８重量％に設定した、第（１）項記載のすべり軸
受。(2) The sliding bearing according to item (1), wherein the upper limit of the Sn content in the Sn-In solid solution is set to 68% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29271690A JP2805543B2 (en) | 1990-10-30 | 1990-10-30 | Plain bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29271690A JP2805543B2 (en) | 1990-10-30 | 1990-10-30 | Plain bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04168295A true JPH04168295A (en) | 1992-06-16 |
| JP2805543B2 JP2805543B2 (en) | 1998-09-30 |
Family
ID=17785390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29271690A Expired - Fee Related JP2805543B2 (en) | 1990-10-30 | 1990-10-30 | Plain bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2805543B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999057448A1 (en) * | 1998-05-01 | 1999-11-11 | Federal-Mogul Corporation | Multi-layer engine bearings and method of manufacture |
| JP2009203504A (en) * | 2008-02-27 | 2009-09-10 | Daido Metal Co Ltd | Sliding member |
| CN101846135A (en) * | 2010-06-23 | 2010-09-29 | 广州市安达汽车零件有限公司 | High-strength tin-indium alloy coating bushing |
-
1990
- 1990-10-30 JP JP29271690A patent/JP2805543B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999057448A1 (en) * | 1998-05-01 | 1999-11-11 | Federal-Mogul Corporation | Multi-layer engine bearings and method of manufacture |
| US6178639B1 (en) | 1998-05-01 | 2001-01-30 | Federal-Mogul World Wide, Inc. | Multi-layer engine bearings and method of manufacture |
| JP2009203504A (en) * | 2008-02-27 | 2009-09-10 | Daido Metal Co Ltd | Sliding member |
| CN101846135A (en) * | 2010-06-23 | 2010-09-29 | 广州市安达汽车零件有限公司 | High-strength tin-indium alloy coating bushing |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2805543B2 (en) | 1998-09-30 |
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