摘要
氧化是NiTi形状记忆合金表面改性的重要手段,常用的氧化工艺包括热氧化、微弧氧化、阳极氧化和化学氧化。虽然四种工艺都依靠合金自身的Ti元素在合金表面原位生成以晶态或非晶态TiO2为主的氧化膜,但四种氧化工艺的原理及所制备的膜层形貌、结构等均不相同。本文评述了四种表面改性工艺的优势和缺陷,并对NiTi合金表面改性的发展方向进行了展望。
Oxidation is an important surface modification technique for NiTi shape memory alloys,and the commonly used oxidation methods include thermal oxidation,micro-arc oxidation,anodic oxidation and chemical oxidation.Although the four met-hods all utilize the element Ti in the alloy to generate an in-situ oxide coating that mainly consists of crystalline or amorphous TiO 2 on the alloy surface,they have diverse principles,coating morphology and coating structures.This paper reviews the advantages and disadvantages of these four methods and sketches out the development trend of the surface modification technique of NiTi shape memory alloy.
作者
邵明增
崔春娟
杨洪波
SHAO Mingzeng;CUI Chunjuan;YANG Hongbo(School of Metallurgical Engineering,Xi’an University of Architecture and Technology,Xi’an 710055)
出处
《材料导报》
EI
CAS
CSCD
北大核心
2018年第7期1181-1186,共6页
Materials Reports
基金
国家自然科学基金联合基金项目(U1460104)
西安建筑科技大学青年科技基金(QN1725)
