(哈爾濱工業(yè)大學(xué)433信箱，哈爾濱150001)
摘 要: 研究了A3鋼采用熔劑法熱浸鋁時(shí)，溫度、時(shí)間對(duì)浸鋁層生長(zhǎng)規(guī)律的影響。結(jié)果表明，表面層的生長(zhǎng)過(guò)程具有“凝固溶解期”→“擴(kuò)散增厚期”→“過(guò)渡平衡期”三個(gè)不同階段，過(guò)渡層的生長(zhǎng)符合指數(shù)增長(zhǎng)規(guī)律。根據(jù)生長(zhǎng)規(guī)律曲線提出了耐蝕、耐熱用浸鋁鋼的選擇規(guī)范。
關(guān)鍵字: 熱浸鋁 溫度 時(shí)間 表面層 過(guò)渡層
（P. O. Box 433, Harbin Institute of Technology,Harbin 150001）
Abstract:Hot-dip aluminizing A3 steel has been investigated by optical microscopy, the investigation con-cerned with the affecting of temperature and time to the growth of hot-dip aluminizing coating. After hot-dip by flux method, it showed that the growth process of surface layer experiences three different periods, i.e."solidifi-cation-disolution period"→"diffusion-accretion period"→“transition-equlibrium period", the growth of transition layer coincides with exponent law. In addition,the choice criterion of the hot-dip aluminizing of the steel used in environment of corrosion and oxidation has been proposed in the light of the growth law.
Key words: hot dip aluminizing temperature time surface layer transition layer
