摘要
用热压法制备了3种成分的Ni-Fe-X基合金,并在1 000℃和1 200℃进行了大气氧化试验。XRD,SEM,EDX和金相分析表明,Ni-11Fe-10Cu-6Al-3Sn(其中数据为质量分数)的氧化层最致密,主要由深色、浅色2种不同形貌和成分的混合氧化物组成,合金中的Cu具有较强的抗氧化性能,氧化铝的存在有效改善了氧化物结构。Fe-Ni合金氧化膜疏松,抗热震性弱,氧化膜与基体间有明显的裂纹,氧化膜主要是铁氧化物。
Oxidation-resistance property of Ni-Fe-X alloys made by hot pressing is studied under 1 000℃ and 1 200℃. Through X-ray, SEM, EDX and metallographic analyses, it is concluded that oxidation film of Ni-Fe-Cu-Al-Sn is dense and thin. Elements in the alloy distributes uniformly. The film is mainly made up of two kinds of oxide mixture with different color and component. Copper in alloy has good oxidation-resistance. Content of aluminum, zinc and tin changes with content of iron in direct proportion. Oxides of aluminum, zinc and tin improve oxide film microstructure. Oxide of Fe-Ni alloy is loose and made up of iron oxide, which has poor shock-resistance. There is a gap and transition stratum between matrix and oxide film.
出处
《粉末冶金材料科学与工程》
EI
2003年第1期68-74,共7页
Materials Science and Engineering of Powder Metallurgy
作者简介
周涛,通信地址:湖南省长沙市中南大学粉末冶金研究院
李宇春,通信地址:湖南省长沙市中南大学粉末冶金研究院
李志友,通信地址:湖南省长沙市中南大学粉末冶金研究院
刘咏,通信地址:湖南省长沙市中南大学粉末冶金研究院
周科朝,通信地址:湖南省长沙市中南大学粉末冶金研究院
