VEHICULAR HEAT INSULATION COMPONENT AND HEAT INSULATION FILM AS WELL AS METHOD OF MANUFACTURING VEHICULAR HEAT INSULATION COMPONENT

• Main Authors: YAMANOI RYOKO, TAGUCHI YOSUKE, MIYAMOTO KEISHI
• Format: Patent
• Language: English; Japanese
• Published: 23.06.2022
• Subjects: APPARATUS THEREFOR; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES; BLASTING; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; COMBUSTION ENGINES; CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; DIFFUSION TREATMENT OF METALLIC MATERIAL; ELECTROFORMING; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; LIGHTING; MECHANICAL ENGINEERING; METALLURGY; PERFORMING OPERATIONS; PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TRANSPORTING; WEAPONS

To provide a heat insulation film that does not peel and the like even if formed on a top surface of a piston and used in a severe environment such as the inside of a combustion chamber of an engine, and a vehicular heat insulation component provided with the heat insulation film.SOLUTION: A vehicular heat insulation component in the present invention is given a heat insulation property by forming a heat insulation film 1 on at least a part of a surface of a heat insulation target component 2 such as a piston of an engine. The heat insulation film 1 includes at least an inorganic compound layer 10 with a Vickers hardness (HV) of 50 to 100, in which one or more kinds of scaly inorganic particles 12 selected from a group of mica, talc, and wollastonite are scattered in an inorganic compound 11 formed from alkoxide. The inorganic compound layer 10 is baked by emitting light with a wavelength of 500 nm or less, thereby improving the hardness of the inorganic compound layer 10 to the aforementioned HV50-100 while suppressing a temperature rise of the heat insulation target component 2.SELECTED DRAWING: Figure 1 【課題】ピストンの頂面に形成されてエンジンの燃焼室の内部等の過酷な環境で使用される場合であっても剥離等することのない遮熱膜及び該遮熱膜が形成された車両用遮熱部品を提供する。【解決手段】本発明の車両用遮熱部品は，エンジンのピストンなどの遮熱対象部品２の表面の少なくとも一部に遮熱膜１を形成して遮熱性を付与したもので，この遮熱膜１は，アルコキシドから形成された無機化合物１１中に，マイカ，タルク，及びウォラストナイトの群より選択された１又は複数種類の鱗片状の無機粒子１２が分散された，ビッカース硬度（ＨＶ）で５０～１００の硬度を有する無機化合物層１０を少なくとも含む。無機化合物層１０を５００nm以下の波長の光の照射によって焼成することで，遮熱対象部品２の温度上昇を抑制しつつ，無機化合物層１０の硬度を前掲のＨＶ５０～１００に高めることができる。【選択図】図１