溅射纳米晶Ni20Cr涂层的高温氧化行为  

High-Temperature Oxidation Behavior of Sputtered Ni20Cr Nanocrystalline Coating

作　　者：张洋[1,2] 宗广霞 王福会[2] 

机构地区：[1]浙江省舟山普陀海洋高科技园区,舟山316100 [2]中国科学院金属研究所金属腐蚀与防护国家重点实验室,沈阳110016 [3]上海海隆防腐技术工程有限公司,上海200949

出　　处：《腐蚀与防护》2011年第6期422-425,共4页Corrosion & Protection

基　　金：国家自然科学基金项目(No.50671115)

摘　　要：利用溅射法在Ni20Cr合金表面制备相同成分的纳米晶涂层,研究了该合金与纳米晶涂层在空气中1000℃的恒温氧化和抗循环氧化行为。结果表明,纳米晶涂层恒温氧化时生成单层连续氧化膜,氧化产物以Cr2O3为主,有少量的NiCr2O4存在。经1000℃循环氧化,纳米晶涂层生成的氧化物致密且颗粒细小,氧化膜相对较完整。溅射纳米晶涂层的抗循环氧化性能优于合金。A sputtered Ni20Cr nanocrystalline coating was prepared by means of magnetron sputtering. The isothermal oxidation and cyclic oxidation behaviors of the Ni20Cr nanocrystalline coating were investigated at 1000 ℃ in air. The results showed that a continuous oxide scale was formed on the surface of the nanocrystalline coating at 1000 ℃, and the scale consisted mainly of Cr2O3 with a little NiCr2O4. No obvious cracks were observed on the nanocrystalline coating, and a fine-grain structured and compact scale was formed on the nanocrystalline coating after 100 cycles of oxidation at 1000 ℃, indicating that the cyclic oxidation resistance of the sputtered nanocrystalline coating is better than that of Ni20Cr alloy.

关 键 词：溅射涂层 纳米晶 恒温氧化 循环氧化 

分 类 号：TG174.444[金属学及工艺—金属表面处理]