一、引言粉末冶金中所用的金属粉末,用途最广而用量最大的首推铁粉,举凡铁基含油轴承、过滤器、密致的机械零件、粉铁心及有机合成的触媒等,往往以铁粉为主要原料。铁粉的装备方法不外下列五种:一、还原法,二、电解法,三、羰基法,四、喷雾法,五、机械粉碎法。其中以电解法的成本较高,因此用途受到一定的限制,还原法是目前应用得最广泛的方法。还原法的优点是:可以利用工业废料如铁磷及酸浸沉泥或高品位的铁矿等作为原料。氧化铁很脆,破碎容易,工业上便可从控制氧化铁的粗细来控制铁粉的粒度。还原铁粉柔 I. INTRODUCTION Metal powder used in powder metallurgy, the most versatile and the largest amount of dedication, such as iron-based oil bearing, filter, dense mechanical parts, powder iron core and organic synthesis catalyst, often with iron Powder as the main raw material. Iron and steel equipment, but no more than the following five: First, the reduction method, two, electrolysis, three, carbonyl method, four, spray method, five, mechanical grinding method. Among them, the cost of electrolysis is high, so the use is subject to certain restrictions. Reduction method is the most widely used method. Reduction method has the advantage of: You can use industrial waste such as iron and phosphorus and acid leaching mud or high-grade iron ore as raw materials. Iron oxide is very brittle, broken easily, the industry can control the thickness of iron oxide from the control of the size of iron powder. Reduced iron powder soft