JPH09313662A - Sled and manufacture therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the lubricity of a sliding surface and to eliminate the need of periodical maintenance for maintaining the lubricity or to hardly require it by forming a carbon film with wear resistance and the iubricity on the sliding surface of a sled base body. SOLUTION: At the time of manufacturing this sled, the sled base body S is carried into a vacuum chamber and arranged on a lower electrode while turning the sliding surface S1 toward an upper electrode and the inside of the chamber is evacuated as prescribed first. Then, one or more kinds of gas containing fluorine, gaseous hydrogen and gaseous oxygen is introduced into the chamber as the gas for a pre-processing, high frequency power is supplied to the lower electrode, the gas for the pre-processing is plasmatized and the surface processing of the sliding surface S1 is performed. Then, after evacuating the inside of the chamber again as needed, gaseous hydrocarbon compound is introduced as raw material gas for forming a film, the high frequency power is supplied to the lower electrode and the carbon film F with the wear resistance and the lubricity is formed on the sliding surface S1 of the base body S under plasma.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sled for use on snow such as skis, snowboards and bobsled sleds, and a sled for use on natural or artificial grass such as grass skis, and the like. A method of manufacturing such a sled.

[0002]

2. Description of the Related Art Skis such as skis, snowboards, bobsled sleds, and glass skis usually have a skid surface with a wax in order to improve sliding with snow and grass. At that time, melt the wax and apply it to the gliding surface,
After the wax is solidified, the coated surface is polished and smoothed.

[0003]

However, the sled having the wax coated on the sliding surface has a problem that the sliding surface is covered with snow during use.
Since the wax film is scratched or partially peeled off by rubbing against grass, sand, etc., the wax must be removed and reapplied periodically, which is troublesome. Therefore, it is an object of the present invention to provide a sled that has excellent lubricity on a sliding surface and does not require or requires almost regular maintenance for maintaining the lubricity, and a method for manufacturing the sled.

[0004]

In order to solve the above-mentioned problems, the present invention provides a sled having a carbon film having abrasion resistance and lubricity formed on the sliding surface of a sled base. . The present invention also provides a method for manufacturing a sled, which comprises the step of forming a carbon film having wear resistance and lubricity on the sliding surface of the sled base.

The sled in the present invention includes skis, snowboards, bobsled sleds, etc. for sliding on snow, grass skis, etc. for sliding on natural or artificial grass, etc. . The sled according to the present invention has a carbon film having wear resistance and lubricity formed on the sliding surface of the sled substrate, and therefore has good slidability with snow, grass (including artificial grass), etc. You can glide smoothly on the top. Further, since the carbon film is less likely to be abraded by friction with snow, grass (including artificial grass), sand, etc., it does not require regular maintenance to maintain the lubricity of the sliding surface, or hardly requires it.

The material of the sled base in the present invention, in particular, the sliding surface on which the film is to be formed may be one that is usually adopted as the material of the sled sliding surface, and one or more materials such as wood and resin can be used. In addition, for those consisting of the sliding part and other parts such as the riding part such as bobsled, the carbon film is formed on the sled sliding surface of the sliding part, so the material of the film-formed sliding surface of the sliding part substrate May be something like this.

When the film-forming sliding surface is made of resin, the thermosetting resin may be phenol / formaldehyde resin, urea resin, melamine / formaldehyde resin, epoxy resin, furan resin, xylene resin, unsaturated polyester resin, or silicone. Examples thereof include resins and diallyl phthalate resins. Further, as thermoplastic resins, vinyl resins (polyvinyl chloride, polyvinyl dichloride, polyvinyl butyrate, polyvinyl alcohol, polyvinyl acetate, polyvinyl formal, etc.), polyvinylidene chloride, chlorinated polyether, polyester resins (polystyrene) , Styrene-acrylonitrile copolymer, etc.), ABS, polyethylene, polypropylene, polyacetal, acrylic resin (polymethylmethacrylate, modified acrylic, etc.),
Polyamide resin (nylon 6, 66, 610, 11
Etc.), cellulosic resins (ethyl cellulose, cellulose acetate, propyl cellulose, acetic acid / butyrate cellulose,
Examples thereof include cellulose nitrate and the like, polycarbonate, phenoxy resin, fluorine resin (ethylene trifluoride, tetrafluoroethylene, tetrafluoroethylene and hexafluoropropylene, vinylidene fluoride, etc.), polyurethane and the like.

The carbon film in the present invention is typically considered to be a DLC (Diamond Like Carbon) film. The DLC film has good lubricity and is less likely to wear due to friction with snow, grass (including artificial grass), sand, etc.
Also, by adjusting the thickness thereof, it is a carbon film having an appropriate hardness such that the flexibility of the sled substrate covered with the film is not impaired, and can be formed at a relatively low temperature. The film can be easily formed.

Further, the thickness of the carbon film should be within a range in which the carbon film can be formed on the sled substrate with good adhesion, the original flexibility of the sled substrate is not impaired, and the carbon film can sufficiently function as a protective film for the sled substrate. Good. In the method of the present invention,
Prior to the carbon film formation, as a pretreatment, the sliding surface of the sled substrate is exposed to plasma of at least one gas selected from fluorine (F) -containing gas, hydrogen (H ₂ ) gas and oxygen (O ₂ ) gas. It is possible. In this case, in the sled of the present invention, the sled base body has been subjected to such pretreatment.

As the fluorine-containing gas, fluorine (F
₂ ) gas, nitrogen trifluoride (NF ₃ ) gas, sulfur hexafluoride (SF ₆ ) gas, carbon tetrafluoride (CF ₄ ) gas, silicon tetrafluoride (SiF ₄ ) gas, disilicon hexafluoride ( Si ₂
F ₆ ) gas, chlorine trifluoride (ClF ₃ ) gas, hydrogen fluoride (HF) gas and the like. By exposing the film-forming sliding surface of the sled substrate to the plasma of the pretreatment gas, the sliding surface is cleaned or the roughness of the surface is further improved. These contribute to improving the adhesion of the carbon film,
A highly adherent carbon film can be obtained.

When the fluorine-containing gas plasma is adopted, the film-deposited sliding surface is terminated with fluorine, and when the hydrogen gas plasma is adopted, the film-deposited sliding surface is terminated with hydrogen. Since the fluorine-carbon bond and the hydrogen-carbon bond are stable, the carbon atom in the film stably forms a bond with the fluorine atom or the hydrogen atom in the portion of the sliding surface on which the film is formed by terminating as described above. From these facts, it is possible to improve the adhesion between the carbon film to be subsequently formed and the sled base. Further, when oxygen gas plasma is adopted, stains such as organic substances adhering to the surface on which the film is to be formed can be removed particularly efficiently, and for this reason, the adhesion between the carbon film to be formed later and the sled substrate can be improved. You can

In the present invention, the pretreatment of the surface to be film-formed by plasma, which is performed prior to the formation of the carbon film, may be performed a plurality of times using the same type of plasma or different types of plasma. For example, when the sliding surface is exposed to oxygen gas plasma, and then exposed to fluorine-containing gas plasma or hydrogen gas plasma, and a carbon film is further formed thereon, after cleaning the sliding surface, the surface is terminated with fluorine. Alternatively, the adhesion between the carbon film, which is terminated with hydrogen and subsequently formed, and the sled base body sliding surface becomes very good.

As the carbon film forming method in the present invention, a plasma CVD method can be used as a method capable of forming a film in a temperature range that does not cause thermal damage to a sled base made of a material having relatively poor heat resistance such as wood and resin. The sputtering method, the ion plating method and the like can be mentioned. Especially when the plasma CVD method is used, the pretreatment of the sled substrate with plasma and the carbon film formation can be performed in the same apparatus.

A carbon film is formed by the plasma CVD method.
In this case, the plasma source gas is generally used for carbon film formation.
Methane used (CH_Four), Ethane (C_TwoH₆),
Lopin (C_ThreeH₈), Butane (C_FourH_Ten),acetylene
(C_TwoH_Two), Benzene (C ₆H₆) Hydrocarbon compounds such as
Gas and, if necessary, these hydrocarbon compounds
Mixed with hydrogen gas and inert gas as carrier gas
Can be used.

Although the carbon film of the present invention is formed on the sliding surface of the sled substrate, it may be formed over part or all of the other portions in addition to the sliding surface, if necessary.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a schematic configuration of a film forming apparatus that can be used for manufacturing a sled according to the present invention. FIG. 2 is a side view of an example of a sled (ski) according to the present invention. The apparatus of FIG. 1 has a vacuum chamber 1 to which an exhaust device 11 is attached, and inside the chamber 1, an electrode 2 and an electrode 3 are installed at a position facing the electrode 2. The electrode 3 is grounded, and a high frequency power supply 23 is connected to the electrode 2 via a matching box 22. Further, the electrode 2 is provided with a heater 21 for heating the deposition target substrate S which is in contact therewith and supported to a deposition temperature. Further, the chamber 1 is provided with a gas supply unit 4 so that a plasma source gas can be introduced therein. Gas supply unit 4
1 and 2 connected via mass flow controllers 411, 412 ... And valves 421, 422.
Gas sources 431, 432 ...
Is included.

In manufacturing the sled according to the present invention using this apparatus, the sled substrate S is supported by the sled substrate tray T and carried into the vacuum chamber 1, and the sliding surface S of the sled substrate is supported.
1 is placed on the electrode 2 with the tray facing the electrode 3, and the exhaust device 11 is operated to bring the inside of the chamber 1 to a predetermined vacuum degree. Then, at least one of fluorine-containing gas, hydrogen gas and oxygen gas is introduced as a pretreatment gas from the gas supply unit 4 into the chamber 1, and a high frequency power is supplied from the high frequency power supply 23 to the electrode 2 via the matching box 22. Electric power is supplied, whereby the introduced pretreatment gas is made into plasma, and the surface of the sliding surface S1 of the sled base S is surface-treated under the plasma. It is desirable to perform this surface treatment (pretreatment), but it is not always necessary.

Then, after the chamber 1 is evacuated again if necessary, a hydrocarbon compound gas is introduced into the chamber 1 from the gas supply unit 4 as a film forming raw material gas, and a high frequency power is supplied from the high frequency power supply 23 to the electrode 2. Electric power is supplied, whereby the introduced hydrocarbon compound gas is turned into plasma, and the carbon film F is formed on the sliding surface S1 of the substrate S under the plasma.

In the above surface treatment and carbon film forming treatment, the sled substrate S is appropriately moved together with the tray T by the substrate driving means (not shown) to form the film-forming sliding surface S1 of the substrate S.
The surface treatment and carbon film formation should be performed uniformly on the entire surface. In this way, as shown in FIG.
A carbon film-covered sled (here, a ski) in which the carbon film F is formed on the sliding surface S1 is obtained.

Next, using the apparatus shown in FIG. 1, DL is formed on the surface corresponding to the sliding surface of the test piece made of the same material as the ski base body made of wood.
An example in which the C film is formed will be described. Experimental Example 1 Without pretreatment of the test piece with the pretreatment gas plasma,
A DLC film was formed directly on the surface of the test piece.

Test piece material Wood size 10 cm × 30 cm × thickness 1 cm High frequency electrode 2 size 40 cm × 40 cm Film forming conditions Membrane source gas methane (CH ₄ ) 100 sccm High frequency power frequency 13.56 MHz, 300 W Film forming vacuum degree 0.1. 1 Torr Film forming speed 500Å / min Film forming time 20 min Experimental Example 2 In Experimental Example 1, the test piece was pretreated with hydrogen gas plasma under the following conditions prior to film formation. The film forming conditions were the same as in Experimental Example 1 above.

Pretreatment Condition Hydrogen for Pretreatment Hydrogen (H ₂ ) 100 sccm High Frequency Power Frequency 13.56 MHz, 300 W Processing Vacuum Degree 0.1 Torr Processing Time 5 min Experimental Example 3 In Experimental Example 1, the test piece was formed before film formation. Pretreatment with a fluorine compound gas plasma was performed under the following conditions.
The film forming conditions were the same as in Experimental Example 1 above.

Pretreatment Conditions Pretreatment Gas Sulfur Hexafluoride (SF ₆ ) 100 sccm High Frequency Power Frequency 13.56 MHz, 300 W Treatment Vacuum Degree 0.1 Torr Treatment Time 5 min Experimental Example 4 In Experimental Example 1, prior to film formation, The test piece was subjected to a first pretreatment with oxygen gas plasma under the following conditions, and a second pretreatment with hydrogen gas plasma. The film forming conditions were the same as in Experimental Example 1 above.

First Pretreatment Condition Pretreatment Gas Oxygen (O ₂ ) 100 sccm High Frequency Power Frequency 13.56 MHz, 300 W Treatment Vacuum Degree 0.1 Torr Treatment Time 5 min Second Pretreatment Condition Pretreatment Gas Hydrogen (H ₂ ) 100 sccm High-frequency power Frequency 13.56 MHz, 300 W Processing vacuum degree 0.1 Torr Processing time 5 min Experimental Example 5 In Experimental Example 1, the test piece was subjected to a first pretreatment with oxygen gas plasma under the following conditions prior to film formation, Further, a second pretreatment with a fluorine compound gas plasma was performed. The film forming conditions were the same as in Experimental Example 1 above.

First pretreatment condition Pretreatment gas Oxygen (O ₂ ) 100 sccm High frequency power frequency 13.56 MHz, 300 W Treatment vacuum degree 0.1 Torr Treatment time 5 min Second pretreatment condition Pretreatment gas Sulfur hexafluoride (SF ₆ ) 100 sccm high frequency power, frequency 13.56 MHz, 300 W processing vacuum degree 0.1 Torr processing time 5 min Next, D obtained by the above Experimental Examples 1, 2, 3, 4, and 5
LC film-covered test piece, untreated similar test piece not having a DLC film formed thereon (Comparative Example 1), and the same test piece were coated with a commercially available wax, solidified, and then the coated surface was polished. Regarding (Comparative Example 2), the coefficient of friction with the aluminum material and the wear characteristics with the diamond material on the surface corresponding to the sliding surface were evaluated. In addition, the adhesion between the DLC film and the test piece was evaluated for each of the DLC film-coated test pieces obtained in Experimental Examples 1, 2, 3, 4, and 5. The wax film adhesion of the wax film-coated test piece obtained in Comparative Example 2 was also evaluated.

The friction coefficient was 20 when a load of 10 g was applied to a pin-shaped article made of aluminum on the surface of the test piece.
The value when the sample was moved at a speed of mm / sec was measured, and the abrasion property was 20 mm / sec when a pin-shaped article made of diamond was applied on the surface of the test piece under a load of 200 g.
Evaluation was performed by moving the sample at a speed of 1 and measuring the worn thickness per unit time. The film adhesion is obtained by bonding the columnar member to the film surface using an adhesive, pulling the columnar member in a direction perpendicular to the film, and separating the film from the test piece main body. It was evaluated by the tensile method for measurement.

The results are shown in the following table. Friction coefficient Abrasion characteristics (μm / h) Film adhesion strength (kg / mm ² ) Experimental example 1 1.5 1.2 2 Experimental example 2 1 1.1 3 Experimental example 3 1 1.1 3 Experimental example 4 1 0.8 4 Experimental Example 5 1 0.8 4 Comparative Example 1 8 9.5 − Comparative Example 2 2 5.3 1 As described above, in the test pieces of Experimental Examples 1 to 5 coated with the DLC film, friction with the aluminum material was observed. The coefficient is smaller than that of the test piece of Comparative Example 1 in which the DLC film is not formed, and it can be seen that the lubricity is improved by coating the sled base body sliding surface with the DLC film. In addition, the wear characteristic value between the diamond material and the diamond material is the same as that of Comparative Example 1 and Comparative Example 2 in which wax is applied.
It was significantly smaller than the test piece.

The adhesion strength of each DLC film to the test piece of Experimental Examples 1 to 5 was the same as in Examples 2 to 5 in which the surface of the test piece was pretreated with plasma prior to the formation of the DLC film.
The test piece of No. 1 was larger than the test piece of Experimental Example 1 not subjected to the pretreatment. From the above, it can be seen that the sled having the carbon film (in particular, the DLC film) formed on the sliding surface of the sled substrate has excellent slidability and wear resistance. Since the slidability between the carbon film and snow or grass is better than the slidability with aluminum, the sled of the present invention is considered to have excellent slidability against snow or grass. Further, it can be seen that the carbon film formed by performing the pretreatment has excellent adhesion.

[0029]

As described above, according to the present invention, there is provided a sled having excellent lubricity of the sliding surface and requiring no or almost no periodic maintenance for maintaining the lubricity, and a method of manufacturing the sled. it can.

[Brief description of drawings]

FIG. 1 is a diagram showing a schematic configuration of a film forming apparatus that can be used for manufacturing a sled according to the present invention.

FIG. 2 is a side view of an example of a sled according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vacuum chamber 11 Exhaust device 2 High frequency electrode 21 Heater 22 Matching box 23 High frequency power supply 3 Grounding electrode 4 Plasma raw material gas supply section S Film-forming sled substrate S1 Film-forming sliding surface of substrate S F Carbon film

Claims (10)

[Claims] 1. A sled characterized in that a carbon film having wear resistance and lubricity is formed on a sliding surface of a sled base. 2. A film-forming surface of the sled base is exposed to plasma of at least one gas selected from a fluorine (F) -containing gas, hydrogen (H ₂ ) gas and oxygen (O ₂ ) gas. The sled according to claim 1, wherein 3. The sled according to claim 1, wherein the carbon film is formed by a plasma CVD method. 4. The method according to claim 1, wherein the carbon film is a DLC film.
The sled according to 2 or 3. 5. The sled according to claim 1, 2, 3 or 4, wherein the film-forming sliding surface of the sled base is made of at least one material selected from wood and resin. 6. A method of manufacturing a sled, comprising the step of forming a carbon film having wear resistance and lubricity on the sliding surface of the sled base. 7. Prior to the carbon film formation, as a pretreatment, at least one selected from a fluorine (F) -containing gas, hydrogen (H ₂ ) gas and oxygen (O ₂ ) gas on the sliding surface of the sled base. The method for manufacturing a sled according to claim 6, wherein the sled is exposed to plasma of the gas. 8. The method for manufacturing a sled according to claim 6, wherein the carbon film is formed by a plasma CVD method. 9. The carbon film is a DLC film, 6.
7. The method for manufacturing a sled according to 7 or 8. 10. The method for producing a sled according to claim 6, 7, 8 or 9, wherein the film-forming sliding surface of the sled base is made of at least one material selected from wood and resin.