FIN WITH SURFACE HAVING ANTIFUNGAL ACTION, HEAT EXCHANGER HAVING FIN, AND METALLIC COMPONENT WITH SURFACE HAVING BACTERICIDAL ACTION

• Main Authors: NAKAHARA TAKAHIRO, YAMADA YOSHIO, KUSUMOTO KOJI, MINOURA KIYOSHI
• Format: Patent
• Language: English; Japanese
• Published: 22.02.2018
• Subjects: APPARATUS THEREFOR; BLASTING; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES; CHEMISTRY; DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OFGENERAL APPLICATION; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; ELECTROFORMING; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; HEAT EXCHANGE IN GENERAL; HEATING; HUMAN NECESSITIES; HYGIENE; LIGHTING; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES; MECHANICAL ENGINEERING; MEDICAL OR VETERINARY SCIENCE; METALLURGY; METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL; PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS; WEAPONS

PROBLEM TO BE SOLVED: To provide a fin with a surface having antifungal action, a heat exchanger having a fin, and a metallic component with a surface having bactericidal action.SOLUTION: In a fin having a metal base 12 and a porous anode oxidation layer 14 formed on the metal base, the surface of the porous anode oxidation layer includes a plurality of recesses 14Ap having a two-dimensional size larger than 100 nm and smaller than 500 nm as a view from a normal direction of the surface, the surface has a projection 15 formed between a plurality of adjacent recesses, the projection has a ridge line 14r formed by crossing of side faces of the plurality of adjacent recesses, and the surface has antifungal action.SELECTED DRAWING: Figure 2 【課題】表面が防カビ作用を備えたフィン、フィンを有する熱交換器、および殺菌作用を備えた表面を有する金属部材を提供する。【解決手段】フィンは、金属基材１２と、金属基材上に形成されたポーラス陽極酸化層１４とを有し、ポーラス陽極酸化層の表面は、表面の法線方向から見たときの２次元的な大きさが１００ｎｍ超５００ｎｍ未満である複数の凹部１４Ａｐを含み、表面は、隣接する複数の凹部の間に形成された突起部１５を有し、突起部は、隣接する複数の凹部の側面が交わることにより形成された稜線１４ｒを有し、表面が防カビ作用を有する。【選択図】図２