尽管铸铝发动机机体重量仅为类似铸铁机体重量的一半,但铝不如铁耐磨,若不采用某种工艺提高其耐久性,那么铝机体会很快磨损。 Sandia国家实验室和GM公司的研究人员合作研究出了一种使铝机体具有耐久性的经济方法,即向缸壁喷涂耐磨涂层。根据合作研究与开发的协议,他们对采用温度超过1650℃的超声速氧-可燃料小射流沉积耐磨材料的喷涂方法所进行的试验一直持续至今。 Although cast aluminum engines weigh only as much as half the weight of a cast iron body, aluminum is less durable than iron and can wear out quickly if not by a process that increases durability. Sandia National Laboratories and GM researchers work together to develop an economical, durable aluminum body that is coated with a wear-resistant coating on the cylinder wall. According to a cooperative research and development agreement, they have experimented with spraying methods using supersonic oxygen-fuel jetlet-less abrasion resistant materials with temperatures in excess of 1650 ° C.