铝镁合金的瓷质氧化法

Porcelain oxidation method of aluminium magnesium alloy

Abstract

本发明涉及一种铝镁合金的瓷质氧化法,其特征在于将铝材经过机械抛光、化学除油及腐蚀、清洗、中和、清洗、化学氧化、清洗、热水烫(50℃)、压缩空气吹干、烘干后,即可在铝材表面成瓷质膜;其中化学氧化步骤所采用的氧化液成分如下:硫酸 1-10g/L、草酸  1-5g/L、硼酸 0.1-1g/L、硫酸镍1-5g/L、硫酸铵0.1-1g/L;化学氧化步骤所采用的工艺参数如下:电流强度 0.5-1A/dm2、温度:40-55℃,时间:40-50min、电压:20-40V。本发明适用于铝镁合金,获得的膜呈银灰色,膜厚度为5-15微米,膜层的结合力良好,硬度和耐磨性高,绝热性、电绝缘性和抗蚀性良好。
The invention relates to a porcelain oxidation method of aluminium magnesium alloy, which is characterized in that the method comprises the following steps: performing mechanical polishing, chemical oil removal, corrosion, cleaning, neutralization, cleaning, chemical oxidation, cleaning, hot water scalding (50 DEG C), blow-drying with compressed air, and oven drying of an aluminium material to form a porcelain film on the aluminium material surface; wherein the oxidation liquid adopted in the chemical oxidation steps comprises the following components: 1-10 g/L of sulfuric acid, 1-5 g./L of oxalic acid, 0.1-1 g/L of boric acid, 1-5 g/L of nickel sulfate, 0.1-1 g/L of ammonium sulfate; the process parameters adopted in the chemical oxidation steps are that: current strength of 0.5-1 A/dm2 of, temperature of 40-55 DEG C, time of 40-50 min, and voltage of 20-40 V. The invention is applicable to aluminium magnesium alloy; the obtained film is silver gray; the film thickness is 5-15 microns; the film has good binding force, high hardness and wear resistance, and good thermal insulation, electrical insulation, and corrosion resistance.

Claims

Description

Topics

Download Full PDF Version (Non-Commercial Use)

Patent Citations (5)

    Publication numberPublication dateAssigneeTitle
    CN-1262344-AAugust 09, 2000哈尔滨三利亚实业发展有限公司Plasma intensified electrochemical surface-porcelainizing process and its products
    US-4252620-AFebruary 24, 1981Setsuo TomitaProcess for forming an anodized film over the surface of aluminum substrates
    US-4567067-AJanuary 28, 1986Design & Manufacturing CorporationMethod of surface treatment of aluminum killed steel in preparation for porcelain coating
    US-6180222-B1January 30, 2001Cerdec Aktiengesellschaft Keramische FarbenGold-containing nanoporous aluminum oxide membranes a process for their production and their use
    US-6180222-B2December 31, 1969

NO-Patent Citations (1)

    Title
    张允诚等: "《电镀手册》", 31 January 2007, article "电镀手册第三版"

Cited By (2)

    Publication numberPublication dateAssigneeTitle
    CN-103374740-AOctober 30, 2013靖江先锋半导体科技有限公司Low-dust surface anodizing process for aluminum-magnesium alloy
    CN-103374742-AOctober 30, 2013靖江先锋半导体科技有限公司铝镁合金的增强型阳极氧化表面处理工艺