JPWO2018116532A1 - 耐食部材 - Google Patents
耐食部材 Download PDFInfo
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
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- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/092—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising epoxy resins
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
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Abstract
Description
基材16として、A6061−T6からなり、直径が10mm、長さが50mmである中実軸体の表面に鏡面研磨を施したものを選定した。この基材16に対して、中間層22及びDLC皮膜18を合計厚さが2.0〜2.2μmとなるように形成した。DLC皮膜18表面の平均ビッカース硬さは1350HVであった。なお、平均ビッカース硬さは、JIS Z 2244の試験方法に従って測定したものであり、荷重を10gfとした場合の3点平均値である。以下に示す平均ビッカース硬さについても同じである。
コーティング材20を形成するための樹脂材料として、エポキシ樹脂を5〜20質量%、酸化チタンを1〜10質量%、カーボンブラックを1〜10質量%、キシレンを5〜15質量%、メチルエチルケトンを15〜25質量%、酢酸2−エトキシエチルを5〜15質量%、トルエンを10〜20質量%、エチレングリコールモノブチルエーテルを1〜10質量%の割合で含有するものを選定したこと、及びコーティング層20aの厚さを21.0〜25.0μmとしたことを除いて、実施例1と同様にして耐食部材10を得た。これを実施例2の試験部材とする。すなわち、実施例2の試験部材は、酸化チタン及びカーボンブラックを含有するコーティング材20を備える。なお、実施例2のコーティング層20a表面の平均ビッカース硬さは50HVであった。
樹脂材料として、エポキシ樹脂を5〜20質量%、酸化第2クロムを1〜10質量%、1,2ジ−クロロエタンを15〜25質量%、メチルイソブチルケトンを5〜15質量%、メチルエチルケトンを5〜15質量%、ジアセトンアルコールを10〜20質量%、エタノールを10〜20質量%の割合で含有するものを選定したこと、及びコーティング層20aの厚さを25.0〜30.0μmとしたことを除いて、実施例1と同様にして耐食部材10を得た。これを実施例3の試験部材とする。すなわち、実施例3の試験部材は、酸化クロムを含有するコーティング材20を備える。なお、実施例3のコーティング層20a表面の平均ビッカース硬さは20HVであった。
基材16の材料としてA2017を選定したことを除いて、実施例1と同様にして得た耐食部材10を実施例4の試験部材とする。基材16の材料としてA2017を選定したことを除いて、実施例2と同様にして得た耐食部材10を実施例5の試験部材とする。基材16の材料としてADC12を選定したことを除いて、実施例2の試験部材と同様にして得た耐食部材10を実施例6の試験部材とする。
比較のため、実施例1と同一の基材16のみからなる試験部材を比較例1とした。すなわち、比較例1の試験部材は、中間層22、DLC皮膜18、コーティング材20の何れも備えていない。
コーティング材20を設けていないことを除いて、実施例1と同様に作製した試験部材を比較例2とした。すなわち、比較例2の試験部材では、DLC皮膜18がコーティング材20によって封孔されていない。
実施例1と同一の基材16に対して陽極酸化処理を施して、厚さ13.0〜16.0μmの陽極酸化皮膜(Al2O3)を形成した試験部材を比較例3とした。比較例3の試験部材の陽極酸化皮膜を、実施例1と同一のコーティング材20で封孔するとともに被覆して、厚さが22.0〜26.0μmのコーティング層20aを形成し、これを比較例4の試験部材とした。実施例2と同一のコーティング材20を選定したことを除いて、比較例4と同様にして比較例5の試験部材を得た。なお、比較例3〜5の試験部材における陽極酸化皮膜表面の平均ビッカース硬さは320HVであった。
コーティング材20を設けていないことを除いて、実施例4と同様に作製した試験部材を比較例6とした。すなわち、比較例6の試験部材は、DLC皮膜18がコーティング材20によって封孔されていない。
Claims (13)
- アルミニウム又はアルミニウム合金からなる基材(16)と、
前記基材(16)の表面に形成されるアモルファスカーボン(a−C)又は水素化アモルファスカーボン(a−C:H)からなるダイヤモンドライクカーボン皮膜(18)と、
少なくとも前記ダイヤモンドライクカーボン皮膜(18)の開気孔(24)に充填されエポキシ樹脂を含有するコーティング材(20)と、を備えることを特徴とする耐食部材(10)。 - 請求項1記載の耐食部材(10)において、
前記コーティング材(20)は、酸化チタンと、カーボンブラックとをさらに含有することを特徴とする耐食部材(10)。 - 請求項2記載の耐食部材(10)において、
前記コーティング材(20)は、質量比で、エポキシ樹脂:酸化チタン:カーボンブラック=5:1:1〜20:10:10であることを特徴とする耐食部材(10)。 - 請求項1記載の耐食部材(10)において、
前記コーティング材(20)は、酸化クロムをさらに含有することを特徴とする耐食部材(10)。 - 請求項4記載の耐食部材(10)において、
前記コーティング材(20)は、質量比で、エポキシ樹脂:酸化クロム=5:1〜20:10であることを特徴とする耐食部材(10)。 - 請求項1記載の耐食部材(10)において、
前記ダイヤモンドライクカーボン皮膜(18)は、アルミニウムと、前記ダイヤモンドライクカーボン皮膜(18)を構成するアモルファスカーボン(a−C)又は水素化アモルファスカーボン(a−C:H)とを含有する中間層(22)を介して前記基材(16)の表面に形成されることを特徴とする耐食部材(10)。 - 請求項1〜6の何れか1項に記載の耐食部材(10)において、
前記コーティング材(20)は、前記ダイヤモンドライクカーボン皮膜(18)の少なくとも一部を覆うコーティング層(20a)を形成することを特徴とする耐食部材(10)。 - 請求項7記載の耐食部材(10)において、
前記開気孔(24)に前記コーティング材(20)が充填された状態で、前記ダイヤモンドライクカーボン皮膜(18)の表面を、前記コーティング層(20a)から露呈させた摺動面(26)を有することを特徴とする耐食部材(10)。 - 請求項8記載の耐食部材(10)において、
前記摺動面(26)は、相手材(12)と摺動し、
前記相手材(12)の材料は、ステンレス鋼、ポリアセタール樹脂、ポリテトラフルオロエチレンの何れかであることを特徴とする耐食部材(10)。 - 請求項9記載の耐食部材(10)において、
前記相手材(12)の材料となるステンレス鋼は、SUS304、SUS303、SUS316の何れかであることを特徴とする耐食部材(10)。 - 請求項9記載の耐食部材(10)において、
前記摺動面(26)と前記相手材(12)との間に、フッ素系グリス(28)が介在することを特徴とする耐食部材(10)。 - 請求項9に記載の耐食部材(10)において、
前記相手材(12)を軸受部材とする軸部材であることを特徴とする耐食部材(10)。 - 請求項1記載の耐食部材(10)において、
飲料又は食品を扱う装置を構成することを特徴とする耐食部材(10)。
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