陶瓷复合钢管──燃烧合成涂层技术的应用

Ceramic-Steel Composite Pipe-The Practical Application of the SHS Coating

燃烧合成技术充分利用了化学反应所释放出来的能量。铝热反应Ｆｅ_２Ｏ_３＋２Ａｌ→２Ｆｅ＋Ａｌ_２Ｏ_３产生的热量使生成物处于熔融状态，在离心力的作用下， Ｆｅ和 Ａｌ_２Ｏ_３发生分离，从而形成陶瓷复合钢管。陶瓷层厚 ＞ ２ｍｍ，主要由α－Ａｌ_２Ｏ_３组成其网状结构改善了陶瓷层的力学性能。陶瓷复合钢管有极好的耐磨性能，在耐磨损领域有光明的应用前景。目前己具工业规模地应用在矿山、电力、冶金等工业部门。

Combustion synthesis technology uses the energy released by chemical reaction efficiently. The aluminithermic reaction Fe_2O_3+Al-Fe+Al_2O_3 can produce melting products of Fe and Al_2O_3 which can be separated under centrifugal force to form ceramic--steel composite pipe. The main component of the ceramic layer is a--Al_2O_3, whose thickness is more than 2mm. The network structure of the ceramic layer improves its mechanical properties. The composite pipes have a great potential application in the field of resisting serious wear. Now, the pipes have been applied on an industrial scale in mines, power plants, and metallurgical industry.