JPS62283258A - Piston ring - Google Patents
Piston ringInfo
- Publication number
- JPS62283258A JPS62283258A JP12466986A JP12466986A JPS62283258A JP S62283258 A JPS62283258 A JP S62283258A JP 12466986 A JP12466986 A JP 12466986A JP 12466986 A JP12466986 A JP 12466986A JP S62283258 A JPS62283258 A JP S62283258A
- Authority
- JP
- Japan
- Prior art keywords
- piston ring
- metal
- chrome
- titanium
- nitride
- 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
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 27
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 claims abstract description 14
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 229910052804 chromium Inorganic materials 0.000 claims description 20
- 239000011651 chromium Substances 0.000 claims description 20
- 238000007733 ion plating Methods 0.000 claims description 13
- SJKRCWUQJZIWQB-UHFFFAOYSA-N azane;chromium Chemical compound N.[Cr] SJKRCWUQJZIWQB-UHFFFAOYSA-N 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 19
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 18
- 229910052751 metal Inorganic materials 0.000 abstract description 18
- 239000002184 metal Substances 0.000 abstract description 18
- 229910001873 dinitrogen Inorganic materials 0.000 abstract description 12
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 abstract description 10
- 239000010936 titanium Substances 0.000 abstract description 10
- 229910052719 titanium Inorganic materials 0.000 abstract description 10
- 238000001704 evaporation Methods 0.000 abstract description 7
- 230000008020 evaporation Effects 0.000 abstract description 6
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 3
- -1 chrome nitride Chemical class 0.000 abstract 2
- 238000004299 exfoliation Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 19
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- CXOWYMLTGOFURZ-UHFFFAOYSA-N azanylidynechromium Chemical compound [Cr]#N CXOWYMLTGOFURZ-UHFFFAOYSA-N 0.000 description 6
- 239000010949 copper Substances 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 3
- 239000012298 atmosphere Substances 0.000 description 2
- 239000010953 base metal Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 206010040844 Skin exfoliation Diseases 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001879 copper Chemical class 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Description
【発明の詳細な説明】 ３、発明の詳細な説明 （発明の属する技術分野） この発明は、イオンプレーティング法により。[Detailed description of the invention] 3. Detailed description of the invention (Technical field to which the invention pertains) This invention uses the ion plating method.
耐摩耗性、耐焼付性に僅れた皮膜が形成されているピス
トンリングに関する。This invention relates to a piston ring formed with a coating having low wear resistance and seizure resistance.
（従来技術と問題点）
耐摩耗性に優れ、且つ相手シリンダ材の摩耗の少ない硬
質クロムめっきが、ピストンリングの表面処理方法とし
て従来から多く使われている。しかし、近年エンジンの
高出力化や高性能化に伴い、ピストンリングに要求され
る条件はますます過酷なものとなり、従来の硬質クロム
めっきでは対応できない場合があり、更に優れた耐摩耗
性、耐焼付性を有するピストンリングが望まれていた。(Prior Art and Problems) Hard chrome plating, which has excellent wear resistance and causes less wear on the mating cylinder material, has been widely used as a surface treatment method for piston rings. However, in recent years, with the increase in engine output and performance, the conditions required for piston rings have become increasingly severe, and conventional hard chrome plating may not be able to meet the requirements. A piston ring with seizure resistance has been desired.
このような要求に対して、イオンプレーティング法によ
り、摺動面に金属窒化物や金属炭化物などの皮膜を形成
したピストンリングが提案されている。なかでも、窒化
チタンは皮膜の硬度が高く。In response to such demands, piston rings have been proposed in which a coating of metal nitride, metal carbide, or the like is formed on the sliding surface by an ion plating method. Among these, titanium nitride has a highly hard film.
耐摩耗性、耐焼付性に優れているため、最近特に注目さ
れはじめている。しかし、窒化チタンの皮膜は、それ自
体が硬質であるため柔軟性に欠け、皮膜が薄いとピスト
ンリング母材との硬度の違いや熱膨張率の違いから運転
中に剥離を生ずる恐れがあった。また、窒化チタンは生
成の速度が遅く、厚い皮膜を得るのに長時間を要するな
どの問題点があった。Due to its excellent wear resistance and seizure resistance, it has recently begun to attract particular attention. However, since the titanium nitride film itself is hard, it lacks flexibility, and if the film is thin, there is a risk of peeling during operation due to the difference in hardness and coefficient of thermal expansion from the piston ring base material. . Further, titanium nitride has problems such as its slow production rate and the need for a long time to obtain a thick film.
（問題点を解決するための手段）
この発明は、ピストンリングの少なくとも外周摺動面に
、イオンプレーティングによる皮膜層が形成されていて
、該皮膜層が金属クロムと窒化クロムからなる下地層と
、該下地層の上に窒化チタンの耐摩耗層が形成されてい
ることを特徴とするピストンリングを提供することで上
記のような問題点を解決している。(Means for Solving the Problems) This invention has a coating layer formed by ion plating on at least the outer peripheral sliding surface of a piston ring, and the coating layer is a base layer made of metallic chromium and chromium nitride. The above-mentioned problems are solved by providing a piston ring characterized in that a wear-resistant layer of titanium nitride is formed on the base layer.
（作用）
本発明の皮膜層は、窒素ガスの存在する減圧雰囲気中で
、クロムおよびチタンを蒸発材として、反応性イオンプ
レーティング法によって得ることができる。窒素ガス雰
囲気中でこのようなイオンプレーティングを行うと、ク
ロムおよびチタンのガスは窒素と反応して、それぞれ窒
化クロム、窒化チタンとなる。(Function) The film layer of the present invention can be obtained by a reactive ion plating method using chromium and titanium as evaporators in a reduced pressure atmosphere in the presence of nitrogen gas. When such ion plating is performed in a nitrogen gas atmosphere, chromium and titanium gases react with nitrogen to form chromium nitride and titanium nitride, respectively.
以下に、下地層について述べる。The base layer will be described below.
真空容器内へ窒素ガスを導入する前にクロムを蒸発材と
してイオンプレーティングを行うと、ピストンリング母
材に金属クロム層が形成される。If ion plating is performed using chromium as an evaporator before introducing nitrogen gas into the vacuum chamber, a metallic chromium layer is formed on the piston ring base material.
この金属クロム層は、熱膨張率がピストンリング母材に
近く、熱応力の影響を受けにくいため、ピストンリング
母材との密着性は良く、シかも柔軟性にも富む。金属ク
ロム層が所定の厚さになったところで徐々に窒素ガスを
導入してイオンプレーティングを続けると、蒸発したク
ロムの一部は窒化クロムに転換する。この金属クロムと
窒化クロムの下地層は、′Ｅｆ１度も高く、柔軟性にも
富み、しかもチタンなどに比べると形成の速度は５〜１
０倍速く、短時間に厚い皮膜を得ることができる。This metallic chromium layer has a coefficient of thermal expansion close to that of the piston ring base material and is less susceptible to thermal stress, so it has good adhesion to the piston ring base material and is highly flexible. When the metal chromium layer reaches a predetermined thickness, nitrogen gas is gradually introduced and ion plating is continued, and a portion of the evaporated chromium is converted to chromium nitride. This underlying layer of metallic chromium and chromium nitride has a high Ef of 1 degree, is highly flexible, and has a formation rate of 5 to 1% compared to titanium.
It is 0 times faster and can obtain a thick film in a short time.
第１表に、母材温度を４００°Ｃとし、種々の窒素ガス
分圧でイオンプレーティングを行ったとき、形成される
皮膜の組織と硬度の関係を示した。Table 1 shows the relationship between the structure and hardness of the film formed when ion plating was performed at a base material temperature of 400°C and various nitrogen gas partial pressures.
窒素ガスの分圧が低いときは転換の割合は少なく、窒素
ガスの分圧が次第に高くなるにつれて、金属クロムが消
失し、単体の窒化クロムとなり、硬度も大きくなること
がわかる。It can be seen that when the partial pressure of nitrogen gas is low, the conversion rate is small, and as the partial pressure of nitrogen gas gradually increases, metallic chromium disappears and becomes chromium nitride, which increases in hardness.
次に、チタンを蒸発材として反応性イオンプレーティン
グを続けると、下地層の上に、耐摩耗性。Next, reactive ion plating with titanium as an evaporator is applied to the base layer to create wear-resistant properties.
耐焼付性に優れた窒化チタンの皮膜を得ることができる
。A titanium nitride film with excellent seizure resistance can be obtained.
（実施例）
本発明に使用したＨＣＤ型イオンプレーティング装置の
概要を第２図に示す。(Example) FIG. 2 shows an outline of the HCD type ion plating apparatus used in the present invention.
母材１を母材保持具２で保持し、ヒーター３で母材１を
所定の温度に加熱する。母材１は図示しないモーターに
より回転する。母材１の下方には。A base material 1 is held by a base material holder 2, and a heater 3 heats the base material 1 to a predetermined temperature. The base material 1 is rotated by a motor (not shown). Below base material 1.
蒸発源の金属クロムの５８、および金属チタンの５ｂを
収容する水冷銅ルツボ６が設置しである。A water-cooled copper crucible 6 containing metal chromium 58 and metal titanium 5b as evaporation sources is installed.
この銅ルツボ６は、回転可能になっていて、金属クロム
の５ａ、と金属チタンの５ｂの位置を入れ替えることが
できる。真空容器４の側壁には、窒素ガス供給口１ｏと
ＨＣＤ型電子銃８が取り付けてあり、電子銃８には、プ
ラズマ用アルゴンガスの導入管９が設けである。水冷銅
ルツボ６と電子銃８の間には、集束コイル７があって、
電子銃８から射出された電子ビームを集束して蒸発源の
金属クロム５ａに照射する。真空容器４内は、図示しな
い真空ポンプにより減圧されるようになっている。This copper crucible 6 is rotatable, and the positions of the metal chromium 5a and the metal titanium 5b can be exchanged. A nitrogen gas supply port 1o and an HCD type electron gun 8 are attached to the side wall of the vacuum container 4, and the electron gun 8 is provided with an introduction tube 9 for plasma argon gas. There is a focusing coil 7 between the water-cooled copper crucible 6 and the electron gun 8.
The electron beam emitted from the electron gun 8 is focused and irradiated onto the metal chromium 5a serving as the evaporation source. The pressure inside the vacuum container 4 is reduced by a vacuum pump (not shown).
真空容器４内にアルゴンガスを導入しｌＸ１０−”ｔｏ
ｒｒ程度に減圧してボンバードにより。Introduce argon gas into the vacuum container 4 and
Reduce the pressure to about rr and bombard it.
母材１の表面のクリーニングを行う。The surface of the base material 1 is cleaned.
つぎに、３Ｘ１０−’ｔｏｒｒ程度に減圧した後。Next, after reducing the pressure to about 3X10-'torr.
ＨＣＤ型電子銃８により蒸発源の金属クロムを加熱し、
蒸発させる。金属クロム層が所定の厚さになったところ
で、真空容器４内に窒素ガスを徐々に導入する。蒸発し
た金属クロムは容器内の窒素と反応して母材１に金属ク
ロムと窒化クロムからなる下地層を形成する。Metal chromium as an evaporation source is heated by an HCD type electron gun 8,
Evaporate. When the metal chromium layer reaches a predetermined thickness, nitrogen gas is gradually introduced into the vacuum container 4. The evaporated metallic chromium reacts with nitrogen in the container to form a base layer on the base material 1 consisting of metallic chromium and chromium nitride.
この下地層が所定の厚さになったところで、ルツボ６を
回転し、金属チタン５ｂを蒸発させて下地層の上に窒化
チタンの皮膜を形成させる。When the base layer reaches a predetermined thickness, the crucible 6 is rotated to evaporate the metal titanium 5b to form a titanium nitride film on the base layer.
呼び径Ｘ幅×厚さが、φ８６ ａｎ Ｘ ２ Ｘ ３の
５ＫＤ−６１材のピストンリングを複数本重ねて母材１
として、以下の条件で反応性イオンプレーティングを実
施した。Multiple piston rings made of 5KD-61 material with a nominal diameter x width x thickness of φ86 an x 2 x 3 are stacked to form the base material 1.
Reactive ion plating was carried out under the following conditions.
母材温度： ４００”Ｃ
ビーム出カニ ３０Ｖ−３００Ａ収束電流：
１５０Ａ
窒素ガス分圧： Ｏ〜３Ｘ１０−’ｔｏｒｒ蒸発源
二 金属クロム、金属チタン処理時間＝
６０分
この処理しこより、ピストンリングの外周摺動面に、金
属クロムと窒化クロムからなる厚さが３０μｍの下地層
と、厚さが１０μｍの窒化チタンの皮膜が得られた。Base material temperature: 400”C Beam output crab 30V-300A convergence current:
150A Nitrogen gas partial pressure: O~3X10-'torr Evaporation source 2 Metallic chromium, metal titanium treatment time =
After this treatment for 60 minutes, a 30 μm thick base layer made of metal chromium and chromium nitride and a 10 μm thick titanium nitride film were obtained on the outer peripheral sliding surface of the piston ring.
（効 果）
本発明によるピストンリングは、ピストンリングの母材
に近い部分に金属クロムを多くして、母材との密着性を
高め、さらに、厚い皮膜を短時間で形成し、摺動面部分
には、硬度の高い窒化チタンを形成して耐摩耗性、耐焼
付性を向上させている。(Effects) The piston ring according to the present invention has a large amount of metallic chromium in the part near the base material of the piston ring to improve adhesion to the base material, and also forms a thick film in a short time, which improves the smoothness of the sliding surface. The parts are made of highly hard titanium nitride to improve wear resistance and seizure resistance.
このように、硬質の窒化チタン層が、密着性、柔軟性に
富む下地層の上に形成されているため、運転中しこ剥離
することもない。本発明のピストンリングは、耐摩耗性
、耐焼付性にすぐれたピストンリングとして、エンジン
の耐久性を向上させるうえで顕著な効果を示す。In this way, since the hard titanium nitride layer is formed on the highly adhesive and flexible base layer, it will not peel off during operation. The piston ring of the present invention exhibits a remarkable effect in improving the durability of an engine as a piston ring with excellent wear resistance and seizure resistance.
第１図に、本発明のピストンリングを示す。
図中 １・・・ピストンリング
２・・・下地層
３・・・窒化チタン層
第２図に１本発明の実施例のＨＣＤ型イオンプレーティ
ング装置の概要を示す。
図中 １・・・母材（ピストンリング）２・・・母材保
持具
３・・・ヒーター
４・・・真空容器
５矢、５し・・蒸発源の金属
６・・・水冷銅ルツボ
７・・・収束コイル
８・・電子銃
９・・・アルゴンガス導入口
１０・・・窒素ガス導入口FIG. 1 shows a piston ring of the present invention. In the figure: 1... Piston ring 2... Base layer 3... Titanium nitride layer FIG. 2 shows an outline of an HCD type ion plating apparatus according to an embodiment of the present invention. In the figure 1...Base metal (piston ring) 2...Base metal holder 3...Heater 4...Vacuum container 5Arrow, 5...Evaporation source metal 6...Water-cooled copper crucible 7 ...Convergence coil 8...Electron gun 9...Argon gas inlet 10...Nitrogen gas inlet
Claims (1)
ーティングによる皮膜層が形成されていて、該皮膜層が
金属クロムと窒化クロムからなる下地層と、該下地層の
上に窒化チタンの耐摩耗層が形成されていることを特徴
とするピストンリングA film layer is formed by ion plating on at least the outer peripheral sliding surface of the piston ring, and the film layer includes a base layer made of metallic chromium and chromium nitride, and a wear-resistant layer of titanium nitride on the base layer. A piston ring characterized by being formed
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12466986A JPS62283258A (en) | 1986-05-31 | 1986-05-31 | Piston ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12466986A JPS62283258A (en) | 1986-05-31 | 1986-05-31 | Piston ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62283258A true JPS62283258A (en) | 1987-12-09 |
Family
ID=14891124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12466986A Pending JPS62283258A (en) | 1986-05-31 | 1986-05-31 | Piston ring |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62283258A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2660939A1 (en) * | 1990-04-17 | 1991-10-18 | Riken Kk | WEAR RESISTANT COATING AND MANUFACTURING METHOD THEREOF. |
| WO2015186790A1 (en) * | 2014-06-06 | 2015-12-10 | 株式会社リケン | Piston ring |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54139891A (en) * | 1978-04-24 | 1979-10-30 | Nagaoka Kk | Specific work metal material and its manufacturing method |
| JPS5757868A (en) * | 1980-09-19 | 1982-04-07 | Toyota Motor Corp | Piston ring |
| JPS5765837A (en) * | 1980-10-08 | 1982-04-21 | Teikoku Piston Ring Co Ltd | Piston ring |
| JPS6191354A (en) * | 1984-10-11 | 1986-05-09 | Canon Inc | Wear resistant multi-layered film |
-
1986
- 1986-05-31 JP JP12466986A patent/JPS62283258A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54139891A (en) * | 1978-04-24 | 1979-10-30 | Nagaoka Kk | Specific work metal material and its manufacturing method |
| JPS5757868A (en) * | 1980-09-19 | 1982-04-07 | Toyota Motor Corp | Piston ring |
| JPS5765837A (en) * | 1980-10-08 | 1982-04-21 | Teikoku Piston Ring Co Ltd | Piston ring |
| JPS6191354A (en) * | 1984-10-11 | 1986-05-09 | Canon Inc | Wear resistant multi-layered film |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2660939A1 (en) * | 1990-04-17 | 1991-10-18 | Riken Kk | WEAR RESISTANT COATING AND MANUFACTURING METHOD THEREOF. |
| WO2015186790A1 (en) * | 2014-06-06 | 2015-12-10 | 株式会社リケン | Piston ring |
| JP2015230086A (en) * | 2014-06-06 | 2015-12-21 | 株式会社リケン | Piston ring |
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