用化学和热加工等方法在黑色金属零件上制取氧化膜的工艺 ,称氧化处理或发黑。由于其氧化膜具有一定的防蚀能力 ,弹性好 ,膜层薄 ,没有氢脆 ,色泽美观 ,润滑性好 ,所以被广泛应用于机械零件、弹簧、武器、光学仪器等。目前 ,很多常温、快速发兰的新工艺得到了推广应用 ,但航空 With chemical and thermal processing methods such as black metal parts in the preparation of oxide film process, said oxidation or blackening. Because of its oxide film has a certain anti-corrosion ability, good elasticity, thin film, no hydrogen embrittlement, beautiful color, good lubrication, it is widely used in mechanical parts, springs, weapons, optical instruments. At present, many room temperature, fast hair blue new technology has been applied, but aviation