纯白色氧化铝由于熔点高、导热系数低,化学稳定性好,被广泛地用作喷涂材料。根据METCO公司推荐的一组喷涂氧化铝粉末参数,用美国7M等离子喷涂设备喷涂国产氧化铝粉末,涂层沉积效率只有40％,涂层结构疏松,不能满足使用要求。为了解决工程的急需,对氧化铝喷涂工艺进行了改进,使其沉积效率由40％提高到8％,涂层质量也有明显提高。 Pure white alumina due to its high melting point, low thermal conductivity, good chemical stability, is widely used as spray coating material. According to the METCO company recommended a group of sprayed alumina powder parameters, with the United States 7M plasma spraying equipment sprayed domestic alumina powder coating deposition efficiency of only 40%, the coating structure loose, can not meet the requirements. In order to solve the urgent needs of the project, the alumina spraying process has been improved, so that the deposition efficiency increased from 40% to 8%, coating quality has also been significantly improved.