科学技术的飞跃发展,对金属材料提出了崭新的要求,要求它们能在高温、高压、高速运转的条件下坚持工作。就拿火箭来说,它的燃烧室和喷气管都是在温度高达3,000℃的环境下进行工作的。在这种情况下,不要说普通钢,就是我们常说的那些所谓难熔合金,如用钨、镍、钴、铬等制成的无铁“司太立”合金也会发红变软,甚至熔化。因此,如何使金属材料闯过“高温关”,就成了一项十分艰巨的任务。“闯关”为了让金属去闯关,科学家想了一个办法,给金属涂上了一层陶瓷,这样它好象穿上了一身盔甲, The rapid development of science and technology places new demands on metal materials and requires them to work under conditions of high temperature, high pressure, and high-speed operation. Take the rocket for example, its combustion chamber and air-injection pipe work in temperatures up to 3,000°C. In this case, do not say ordinary steel, or those so-called refractory alloys that we often say, such as iron-free “Stellite” alloys made of tungsten, nickel, cobalt, chromium, etc., will also turn red and soft, Even melted. Therefore, how to get the metal material to pass through the “high temperature off” has become a very arduous task. In order to let metal go through, “Shaoguan”, the scientist thought of a way to coat the metal with a layer of ceramic so that it seemed to put on armor.