Low-friction sliding mechanism, low-friction agent composition and method of friction reduction
First Claim
1. A low-friction sliding mechanism wherein a low-friction agent composition is interposed between sliding surfaces of a DLC coated sliding member (A) and a sliding member (B), whereinthe DLC coated sliding member (A) is formed by coating diamond-like carbon having a hydrogen content of 20 atomic percent or less on a base material;
- the sliding member (B) is formed of at least one kind of material selected from a group consisting of a metal material, a non-metal material and a coated material obtained by coating a thin film on a surface of the metal material or the non-metal material; and
the low-friction agent composition contains an oxygen-containing organic compound (C), the oxygen-containing organic compound (C) being at least one kind selected from a group consisting of alcohols, esters, ethers, ketones, aldehydes, carbonates and derivatives thereof,wherein the oxygen-containing organic compound (C) is contained in the range of 0.05 to 3.0% mass relative to a total mass amount of the low-friction agent composition.
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Abstract
The invention provides a low-friction sliding mechanism, a low-friction agent composition, a friction reduction method, a manual transmission and a final reduction gear unit that can exert very excellent low friction characteristics to sliding surfaces present under various applications, and, in particular, that have more excellent low friction characteristics than that of a combination of an existing steel material and an organic Mo compound.
The low-friction sliding mechanism has an oxygen-containing organic compound or an aliphatic amine compound interposed between sliding surfaces that a DLC coated sliding member and a sliding member form.
The low-friction agent composition contains an oxygen-containing organic compound or an aliphatic amine compound.
The friction reduction method includes supplying the low-friction agent composition between sliding surfaces that a DLC coated sliding member and a sliding member form.
The manual transmission includes, as at least one of sliding members, a DLC coated sliding section.
The final reduction gear unit includes, as at least one of sliding members, a DLC coated sliding section.
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Citations
14 Claims
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1. A low-friction sliding mechanism wherein a low-friction agent composition is interposed between sliding surfaces of a DLC coated sliding member (A) and a sliding member (B), wherein
the DLC coated sliding member (A) is formed by coating diamond-like carbon having a hydrogen content of 20 atomic percent or less on a base material; -
the sliding member (B) is formed of at least one kind of material selected from a group consisting of a metal material, a non-metal material and a coated material obtained by coating a thin film on a surface of the metal material or the non-metal material; and the low-friction agent composition contains an oxygen-containing organic compound (C), the oxygen-containing organic compound (C) being at least one kind selected from a group consisting of alcohols, esters, ethers, ketones, aldehydes, carbonates and derivatives thereof, wherein the oxygen-containing organic compound (C) is contained in the range of 0.05 to 3.0% mass relative to a total mass amount of the low-friction agent composition. - View Dependent Claims (2, 3, 4, 5)
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6. A method of reducing a friction, comprising:
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supplying a low-friction agent composition containing an oxygen-containing organic compound (C) on sliding surfaces of a DLC coated sliding member (A) and a sliding member (B), wherein the DLC coated sliding member is formed by coating diamond-like carbon having a hydrogen content of 20 atomic percent or less on a base material, wherein the sliding member (B) is formed of at least one kind of material selected from a group consisting of a metal material, a non-metal material and a coated material obtained by coating a thin film on a surface of the metal material or the non-metal material so as to lubricate the sliding surfaces, wherein the oxygen-containing organic compound (C) is at least one kind selected from a group consisting of alcohols, esters, ethers, ketones, aldehydes, carbonates and derivates thereof, wherein the oxygen-containing organic compound (C) is contained in the range of 0.05 to 3.0% mass relative to a total mass amount of the low-friction agent composition. - View Dependent Claims (7)
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8. A low-friction sliding mechanism comprising a low-friction agent composition interposed between sliding surfaces of a DLC coated sliding member (A) and a sliding member (B), wherein:
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the DLC coated sliding member (A) is formed by coating diamond-like carbon having a hydrogen content of 10 atomic percent or less on a base material, the sliding member (B) is formed of at least one kind of material selected from a group consisting of a metal material, a non-metal material and a coated material obtained by coating a thin film on a surface of the metal material or the non-metal material, the low-friction agent composition contains an oxygen-containing organic compound (C), the oxygen-containing organic compound (C) being at least one kind selected from a group consisting of alcohols, esters, ethers, ketones, aldehydes, carbonates and derivatives thereof, and, the oxygen-containing organic compound (C) is contained in the range of 0.05 to 3.0% mass relative to a total mass amount of the low-friction agent composition.
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9. A low-friction sliding mechanism comprising a low-friction agent composition interposed between sliding surfaces of a DLC coated sliding member (A) and a sliding member (B), wherein:
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the DLC coated sliding member (A) is formed by coating diamond-like carbon having a hydrogen content of 0.5 atomic percent or less on a base material, the sliding member (B) is formed of at least one kind selected from a group consisting of a metal material, a non-metal material and a coated material obtained by coating a thin film on a surface of the metal material or the non-metal material, the low-friction agent composition contains an oxygen-containing organic compound (C), the oxygen-containing organic compound (C) being at least one kind selected from a group consisting of alcohols, esters, ethers, ketones, aldehydes, carbonates and derivatives thereof, and, the oxygen-containing organic compound (C) is contained in the range of 0.05 to 3.0% mass relative to a total mass amount of the low-friction agent composition.
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10. A low-friction sliding mechanism comprising a low-friction agent composition interposed between sliding surfaces of a DLC coated sliding member (A) and a sliding member (B), wherein:
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the DLC coated sliding member (A) is formed by coating a-C diamond-like carbon that does not contain hydrogen, the sliding member (B) is formed of at least one kind of material selected from a group consisting of a metal material, a non-metal material and a coated material obtained by coating a thin film on a surface of the metal material or the non-metal material, the low-friction agent composition contains an oxygen-containing organic compound (C), the oxygen-containing organic compound (C) being at least one kind selected from a group consisting of alcohols, esters, ethers, ketones, aldehydes, carbonates and derivatives thereof, and, the oxygen-containing organic compound (C) is contained in the range of 0.05 to 3.0% mass relative to a total mass amount of the low-friction agent composition.
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11. A low-friction sliding mechanism wherein a low-friction agent composition is interposed between sliding surfaces of a DLC coated sliding member (A) and a sliding member (B), wherein:
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the DLC coated sliding member (A) is formed by coating diamond-like carbon having a hydrogen content of 20 atomic percent or less on a base material, the sliding member (B) is formed of at least one kind of material selected from a group consisting of a metal material, a non-metal material and a coated material obtained by coating a thin film on a surface of the metal material or the non-metal material, the low-friction agent composition comprises an ester, the ester comprising at least one kind selected from the group consisting of glycerin monooleate, glycerin dioleate, sorbitan monooleate, sorbitan dioleate, and any combination of these, and the ester is contained in the range of 0.05 to 3.0% mass relative to a total mass amount of the low-friction agent composition.
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12. A manual transmission comprising a low-friction sliding mechanism wherein a low-friction agent composition is interposed between sliding surfaces of a DLC coated sliding member (A) and a sliding member (B), wherein
the DLC coated sliding member (A) is formed by coating diamond-like carbon having a hydrogen content of 20 atomic percent or less on a base material; -
the sliding member (B) is formed with at least one kind of material selected from a group consisting of a metal material, a non-metal material and a coated material obtained by coating a thin film on a surface of the metal material or the non-meta material; and the low-friction agent composition contains an oxygen-containing organic compound (C), the oxygen-containing organic compound (C) being at least one selected from a group consisting of alcohols, esters, ethers, ketones, aldehydes, carbonates and derivatives thereof, wherein the oxygen-containing organic compound (C) is contained in the range of 0.05 to 3.0% mass relative to a total mass amount of the low friction agent composition, wherein the DLC coated sliding member is an input shaft of the manual transmission, the input shaft being formed by coating diamond-like carbon having a hydrogen content of 20 atomic percent or less on a base material.
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13. A final reduction gear unit comprising a low-friction sliding mechanism wherein a low-friction agent composition is interposed between sliding surfaces of a DLC coated sliding member (A) and a sliding member (B), wherein
the DLC coated sliding member (A) is formed by coating diamond-like carbon having a hydrogen content of 20 atomic percent or less on a base material; -
the sliding member (B) is formed with at least one kind of material selected from a group consisting of a metal material, a non-metal material and a coated material obtained by coating a thin film on a surface of the metal material or the non-metal material; and the low-friction agent composition contains an oxygen-containing organic compound (C), the oxygen-containing organic compound (C) being at least one selected from a group consisting of alcohols, esters, ethers, ketones, aldehydes, carbonates and derivatives thereof, wherein the oxygen-containing organic compound (C) is contained in the range of 0.05 to 3.0% mass relative to a total mass amount of the low-friction agent composition, wherein the DLC coated sliding member is a member selected from the group consisting of a roller of a side bearing, a differential case, a pinion mate shaft, a pinion mate gear, a washer and a roller of a roller bearing for supporting a drive shaft, the selected member being formed by coating diamond-like carbon having a hydrogen content of 20 atomic percent or less on a base material, wherein the coated material of the sliding member (B) is obtained by coating diamond-like carbon having a hydrogen content of 20 atomic percent or less on the surface of the metal material or the non-metal material. - View Dependent Claims (14)
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Specification