公开(公告)号：US4066806A

公开(公告)日：1978-01-03

申请号：US698752

申请日：1976-06-22

申请人： Kenneth K. Speirs ,  Robert P. Bradley

发明人： Kenneth K. Speirs ,  Robert P. Bradley

IPC分类号： C23C10/50 ,  C23C11/02

CPC分类号： C23C10/50 ,  Y10T428/12757 ,  Y10T428/12965

摘要： A process is provided for the pack diffusion coating of ferrous metal articles with aluminum, wherein a small but effective amount of an energizer, aluminum chloride, is employed associated with a small but effective amount of a halide selected from the group consisting of an ammonium halide and an anhydrous metal chloride mixed in a pack containing particulate aluminum metal mixed with an inert material, e.g. refractory oxide, in which the ferrous article to be coated is embedded, the process being characterized by the fact that substantial outgassing of aluminum chloride is inhibited during the coating process by controlling in combination the total amount of halides employed not to exceed about 1 - 1/2% of the pack.

摘要翻译： 提供了一种用于具有铝的黑色金属制品的包装扩散涂层的方法，其中使用少量但有效量的活化剂氯化铝与少量但有效量的选自卤化铵的卤化物 和混合在包含与惰性材料混合的颗粒状铝金属的包装中的无水金属氯化物， 耐火氧化物，其中待涂覆的黑色金属制品被包埋，该方法的特征在于，在涂覆过程中通过组合控制卤化物的总量不超过约1 -1，氯化铝的实质性除气被抑制 / 2％的包装。