Fabrication and characterization of rutile-TiO2 coatings on metallic alloy subst

2019-08-14 09:00:13

alloys alloy coating metallic rutile

责任者: Sun, Y.;Siva, D.;Krishna, Rama 单位: Sch. of Mat. Eng., Nanyang Technol. Univ., Singapore 639798, Singapore 来源出处: Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment,2004,25(5):862-865 摘要: In the present work, attempts have been made to extend the use of the tribological and chemical properties of rutile-TiO2 to metallic alloy systems, by forming a rutile coating on the metallic substrates. Two metallic alloys were selected in this study, including AISI 316L austenitic stainless steel and aluminium alloy. The rutile-based coatings were fabricated by magnetron sputter deposition of a pure titanium coating first, and then thermal oxidation of the coated specimens to partially convert the titanium coating to rutile oxide and to promote interfacial reactions which can significantly enhance the coating-substrate adhesion strength. The structures and properties of the coating-substrate systems were characterized by a variety of analytical and experimental techniques, including X-ray diffraction, glow discharge spectrometry, high resolution SEM, nanoindentation, microscratch, friction and wear testing, as well as electrochemical testing. The results show that the friction and wear properties, as well as the corrosion resistance of the metallic alloys can be significant enhanced by surface engineering with rutile-TiO2. 关键词: Protective coatings;Titanium dioxide;Stainless steel;Aluminum alloys;Oxidation;Corrosion resistance;Wear resistance;Stainless steel AISI 316L;Aluminum alloy AA6061;Thermal oxidation;Rutile