본 발명에 관한 연료 탱크용 강판은, 지철의 편면 또는 양면에 위치하는 Zn-Ni 합금 도금층과, 상기 Zn-Ni 합금 도금층의 상층에 위치하는 무기계 크로메이트프리 화성 피막을 구비하고, 상기 Zn-Ni 합금 도금층은, 해당 Zn-Ni 합금 도금층과 상기 무기계 크로메이트프리 화성 피막의 계면으로부터, 상기 Zn-Ni 합금 도금층과 상기 강판의 계면에 도달하는 크랙을 가지고 있고, 상기 무기계 크로메이트프리 화성 피막의 표면에서의 물 접촉각이, 50도 이상이다.

    A steel sheet for a fuel tank includes: a Zn-Ni alloy plated layer which is placed on one surface or each of both surfaces of a base metal and formed on at least one surface; and an inorganic chromate-free chemical conversion coating film which is placed over the Zn-Ni alloy plated layer. The Zn-Ni alloy plated layer has a crack starting from an interface between the Zn-Ni alloy plated layer and the inorganic chromate-free chemical conversion coating film and reaching an interface between the Zn-Ni alloy plated layer and the steel sheet, and a water contact angle on a surface of the inorganic chromate-free chemical conversion coating film is more than or equal to 50 degrees.


    Access

    Download


    Export, share and cite



    Title :

    연료 탱크용 강판


    Publication date :

    2019-01-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    C23C Beschichten metallischer Werkstoffe , COATING METALLIC MATERIAL / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B65D Behältnisse zur Lagerung oder zum Transport von Gegenständen oder Materialien [Container], z.B. Säcke, Beutel, Fässer, Flaschen, Dosen, Kästen, Büchsen, Schachteln, Packkörbe, Tonnen, Gläser, Flüssigkeitsbehälter, Trichtersilos, Transportbehälter , CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS / C25D Verfahren für die elektrolytische oder elektrophoretische Herstellung von Überzügen , PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS