Article
Materials Science, Coatings & Films
Jun Heo, Jaewoo Lee, Sungwoo Kim, Akram Alfantazi, Sung Oh. Cho
Summary: The corrosion resistance of austenitic stainless steel (SS) has been significantly improved by the cathodic plasma electrolytic oxidation (CPEO) process, which forms a protective oxide layer. This process creates two distinct layers on the SS surface: a porous outer layer of Fe oxides and a compact inner layer of Cr oxides. The thicknesses of the outer and inner layers are approximately 7 μm and 12 μm, respectively, and the oxide layers are fabricated in a short time of less than 30 seconds. Potentiodynamic polarization analysis showed a 65% decrease in corrosion current after the formation of the protective oxide layer, confirming the effectiveness of the CPEO treatment. Electrochemical impedance spectroscopy revealed that the outer layer captured corrosive species due to its porous structure, while the compact structure of Cr oxides in the inner layer provided high resistance to reactions with corrosive species. Additionally, a Rockwell C indentation test demonstrated the strong mechanical property and bonding strength of the protective oxide layer to the substrate.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Rui Feng, Weichao Zhao, Kefu Gan, Min Feng, Zongheng Li, Yaokun Pan, Zhaorong Sun, Jiaquan Li
Summary: This paper presents a systematic study on the microstructure and properties of copper/304 stainless steel fabricated by explosive welding. The interface between the two metals exhibits a wavy structure with vortex regions, diffusion layers, and melting layers. The nanohardness and flexural strength show specific trends along the interface.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Mohaddese Nabizadeh, Clement Boissy, Kitty Baert, Steven Goderis, Heidi Ottevaere, Herman Terryn, Tom Hauffman
Summary: This research proposed a mechanistic model for the formation of the thermal oxide film on low Cr stainless steel, and investigated the effects of kinetically and thermodynamically driven phenomena on the growth of a Fe-Cr complex oxide film at 950 degrees C. It was also found that fluoride ions can enter the oxide film and form a complex with Fe, preferentially dissolving hematite islands through a complexation mechanism.
Article
Chemistry, Analytical
Junfeng He, Zan Wang, Wenjie Zhou, Yue Jian, Li Zhou
Summary: This study investigated the electrochemical properties of SS304 with PAM and PAM-NaOH as electrolytes for microstructure machining. The use of mixed electrolyte (PAM-NaOH) was shown to improve the processing accuracy of masked ECM for SS304, combining the advantages of a non-Newtonian fluid with the ability to dissolve processing products.
Article
Environmental Sciences
Junke Zhang, Peidong Su, Lin Li
Summary: This study introduced microbial induced carbonate precipitation (MICP) to immobilize chromium in stainless steel pickling sludge. The results showed that both bacteria lysis liquor (BLL)-based MICP and bacteria-based MICP process effectively trapped the chromium in mineral lattices, reducing the potential environmental risk. The BLL-based MICP demonstrated better immobilization performance, while the addition of calcium enhanced the immobilization performance of bacteria-based MICP. pH-dependent leaching tests revealed that the leaching of chromium was controlled by Cr(OH)(3) and Cr2O3.
Article
Materials Science, Multidisciplinary
Jiang Yu, Rongmao Du, Yanlong Fan, Hongtao Zhang
Summary: A large-area Al/steel resultant welded joint was successfully obtained by unbalanced thermal field assisted thermo-compensated resistance brazing welding. Increasing the auxiliary welding current improved the overall temperature field and promoted the interdiffusion of Al and Fe elements, gradually increasing the connection area between Al alloy and steel. The maximum thickness of the Al diffusion layer and Fe2Al5 layer reached 5.25 mm and 0.86 mm when the auxiliary current was 0.3 kA. The ultimate load of the joint with an auxiliary current of 0.3 kA was approximately three times higher than that of joints without auxiliary current.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Physical
Ashwini Pol, Suchitra Sapakal, Ayesha Khan, Anamika V. Kadam
Summary: Deposition of nickel oxide (NiO) films on 304-grade stainless steel (304SS) substrate by a simple hydrothermal method is studied for water splitting. The NiO on 304SS shows excellent oxygen evolution reaction (OER) with good stability, low overpotential, and suitable Tafel slope.
SURFACES AND INTERFACES
(2023)
Article
Nuclear Science & Technology
Marino Corrado, Silvio Cao, Sabrina Grassini, Leonardo Iannucci, Laura Savoldi
Summary: This paper discusses the decontamination of stainless-steel surfaces in Light Water Reactors components and presents a chemical method for the removal of thin surface layers from AISI 304 stainless steel samples. The optimization of the oxidation phase is also explored, considering factors such as solution pH, [KMnO4]/[H+] ratio, and immersion time. Experimental results demonstrate that multiple oxidation cycles followed by cleaning in oxalic acid can effectively dissolve metal from the surface, despite the localized corrosion attack.
NUCLEAR ENGINEERING AND DESIGN
(2023)
Article
Engineering, Environmental
Xudong Zhao, Chengwei Zhang, Baosheng Liu, Huifang Zhao, Xinli Gao, Yuanyang Wang, Yuezhong Zhang, Dahuan Liu, Chong-Chen Wang
Summary: Conversion of wastewater to MOFs provides a feasible method for reducing MOFs cost and effectively reusing industrial wastewater. The obtained products exhibit excellent performance and adsorption capacity.
RESOURCES CONSERVATION AND RECYCLING
(2023)
Article
Materials Science, Multidisciplinary
Dan Li, Feifei Huang, Xin Lei, Ying Jin
Summary: The present study investigated the localized corrosion of 304 stainless steel triggered by MnS in a 3.5 wt% NaCl solution using various analytical techniques. The dissolution of MnS was found to start from the boundary areas and release elemental sulfur. The reoccurrence and disappearance of elemental sulfur during MnS dissolution suggested continuous consumption and conversion. Copper-containing compounds were observed deposited on residual MnS in the corrosion pit, while a thin Cr2O3 film covered the pit and thickened over time. Based on the evidence obtained, a more comprehensive MnS-induced localized corrosion mechanism was proposed.
Article
Materials Science, Multidisciplinary
Kangkang Zheng, Peize Cheng, Longlin Lei, Xiangyu Wang, Pei He, Yangting Sun, Jin Li, Yiming Jiang
Summary: By conducting experiments to study the corrosion inhibition mechanism of tin in alloyed ferrite stainless steel, it was found that the inhibition effect is influenced by the concentration of Sn2+ and the polarization potential. Utilizing the principle of under-potential deposition, the inhibition mechanism of tin was successfully explained and the corrosion process of tin-containing stainless steel was clearly described.
Article
Engineering, Mechanical
Menghao Liu, Zhuoyan Ni, Cuiwei Du, Zhiyong Liu, Meihui Sun, Endian Fan, Qiuyu Wang, Xiaojia Yang, Xiaogang Li
Summary: The investigation revealed that the failure of a heavily cracked geothermal water convection tube was caused by stress corrosion cracking induced by chloride in the service environment and sensitization of the matrix. Additionally, residual stress arising from the manufacturing process also promoted the failure process.
ENGINEERING FAILURE ANALYSIS
(2021)
Article
Nanoscience & Nanotechnology
X. C. Cai, S. J. Ding, S. B. Jin, L. D. Xu, G. Y. Liu, B. R. Sun, T. D. Shen
Summary: The NC-304 austenitic stainless steel with low Si content shows superior high-temperature oxidation resistance compared to steels with excessive Si addition. The unique nanocrystalline microstructure and distribution feature of Si in NC-304 accelerate the formation of a continuous SiO2 healing layer, effectively reducing the oxidation rate at least up to 1000 degrees C.
SCRIPTA MATERIALIA
(2021)
Article
Chemistry, Analytical
Yuanlong Chen, Xiang Li, Jinyang Liu, Yichi Zhang, Xuehui Chen
Summary: In this study, a simulation model for nanosecond-pulsed laser surface remelting of stainless steel was established to investigate the evolution of the Marangoni force in the molten pool. Experimental results showed that the viscosity of the liquid metal in the molten pool increased with the scanning speed. The remelting width decreased and roughness increased with increasing scanning speed. The presence of an oxide film on the surface, mainly composed of cr and Fe oxides, improved the corrosion resistance of the remelted layer.
Article
Materials Science, Multidisciplinary
Hugo Perez, Gregorio Vargas, Coraquetzali Magdaleno, Rodolfo Silva
Summary: AISI 304 SS has good corrosion resistance but poor wear resistance. Oxy-nitriding in plasma electrolytic conditions using urea solutions can significantly increase wear resistance. A concentration of 20% urea in the electrolyte is considered sufficient for a threefold increase in wear resistance.
Article
Materials Science, Multidisciplinary
Zhichao Shang, Xiaoping Cai, Farshid Pahlevani, Yan Zheng, Akbar Hojjati-Najafabadi, Xinran Gao, Baojing Zhang, Peizhong Feng
Summary: High porosity Co-Al-Fe intermetallics with 3D-microstructures were successfully synthesized in one step via a thermal explosion reaction. The link between pore structure and permeability was investigated using 3D-XRM technology. The corrosion resistance of the samples with different Fe contents was studied at 900 degrees C under an oxygen/sulphur atmosphere for up to 120 h. The results showed that the samples maintained stable pore structure and intact internal matrices, attributed to the formation of a thin protective layer on the surface. In addition, inward diffusion of S resulted in the formation of FeS nodules.
Article
Materials Science, Multidisciplinary
Lian Ma, Hain Yang, Daquan Zhang, Wei Wu
Summary: In this study, an environmentally friendly volatile corrosion inhibitor, lysine salts (LA), was prepared between graphene oxide (GO) layers using an in situ intercalation technique. The corrosion inhibition effect of LA was evaluated, and it was found that LA-GO2 achieved a 99.3% corrosion inhibition efficiency after composition optimization. The inhibition of the electrochemical anodic process on the surface of mild steel was the main reason for the high corrosion inhibition efficiency of LA-GO2. The properties of the surface film on the corroded steel were also characterized in detail to understand the corrosion inhibition mechanism of LA-GO2.
Article
Materials Science, Multidisciplinary
Running Wang, Jiaping Zhang, Bing Liu, Jie Fei, Qiangang Fu
Summary: By introducing a tailored SiC-C interphase, the carbon fiber can be effectively protected, improving the mechanical and ablation properties of leading edge shaped C/C-ZrC-SiC composites.
Article
Materials Science, Multidisciplinary
Zihua Wang, Chijia Wang, Ruitao Wang, Jiapeng Deng, Kun Zhang, Yanji Zhu, Huaiyuan Wang
Summary: A robust anti-corrosive coating has been developed using functional fly ash, which demonstrates excellent corrosion resistance and improved mechanical properties. The coating achieves these enhancements through molecular cross-linking design and surface augmentation techniques, resulting in a significantly improved impedance modulus compared to pure polyurea coatings.
Article
Materials Science, Multidisciplinary
Haofei Sun, Meifeng Li, Hao Zhang, Jing Liu
Summary: The oxidation behavior of FeCrNi medium entropy alloy was investigated through experimental observations and density functional theory (DFT) calculations. The study found that at 900 degrees C, the alloy forms a desirable and continuous oxide layer, while at 1000 degrees C, the oxide layer becomes discontinuous with penetration of oxide. These observations highlight the significant role of phase structure in promoting the formation of protective oxide scales and influencing oxidation resistance.
Article
Materials Science, Multidisciplinary
Yang Li, Ke Ma, Jingjun Xu, Jingjing Li, Yueming Li, Yi Zhang, Jun Zuo, Meishuan Li
Summary: Cr2AlC diffusion barrier effectively blocks the diffusion of Ti, enhancing the stability and spalling resistance of the Al2O3 scales between NiCrAlY coating and TiAl alloy.
Article
Materials Science, Multidisciplinary
Weiyi Wang, Qinglin Pan, Xiangdong Wang, Bing Liu
Summary: By adding Ce, Sc, Y and Zr elements to Al-Mg-Si alloy, the microstructure of the alloy can be regulated, and the corrosion and heat resistance of the materials can be improved.
Article
Materials Science, Multidisciplinary
Andrea Cristoforetti, Javier Izquierdo, Ricardo M. Souto, Flavio Deflorian, Michele Fedel, Stefano Rossi
Summary: This study presents a new approach to studying the mechanism of filiform corrosion in organic coated steel using the scanning vibrating electrode technique (SVET) and micropotentiometry (potentiometric SECM). The electrochemical activity under the coating was evaluated by mapping the ionic current densities coming from artificial defects made in specific locations of the filament. Antimony tips were also used to investigate the pH changes associated with different corrosion reactions at the metal-paint interface. Local pH levels along the filament in the anodic and cathodic regions were determined.
Article
Materials Science, Multidisciplinary
Yang Gao, Dayun Sun, Zhu Liu, Shuo Cong, Rui Tang, Yanping Huang, Lefu Zhang, Xianglong Guo
Summary: The corrosion characteristics of a novel alumina-forming austenitic steel in high-pressure high-temperature water environment were studied. The addition of aluminum has a negative effect on the continuity of the alumina scale.
Article
Materials Science, Multidisciplinary
Negin Madelat, Benny Wouters, Peter Visser, Zahra Jiryaeisharahi, Kristof Marcoen, Shoshan T. Abrahami, Annick Hubin, Herman Terryn, Tom Hauffman
Summary: This work explores the correlation between electrolyte transport properties and the variation of pigment volume concentration (PVC) in organic coatings. An odd random phase electrochemical impedance spectroscopy (ORP-EIS) approach is used to analyze the diffusion of ions independent from water uptake. The results show that a higher PVC leads to a more homogeneous coating structure, resulting in faster diffusion of ions and enhanced water uptake.
Article
Materials Science, Multidisciplinary
Eloa Lopes Maia, Serguei Gavrilov, Valentyn Tsisar, Kitty Baert, Iris De Graeve
Summary: The effect of pre-oxidation in air at 300-500°C on the initiation and development of liquid metal corrosion attack on 316L austenitic steel in static lead-bismuth eutectic (LBE) has been investigated. It was found that pre-formed oxide films can protect the surface against dissolution, while high temperature pre-oxidation leads to localized corrosion.
Article
Materials Science, Multidisciplinary
Baozhuang Sun, Qiuyu Wang, Yue Pan, Zhiyong Liu, Cuiwei Du, Xiaogang Li
Summary: In this study, a non-steady electrochemical model was established to investigate stress corrosion cracking (SCC). The model was verified using 304 SS with various microstructures, confirming its effectiveness in assessing SCC susceptibility.
Article
Materials Science, Multidisciplinary
Xingyu Xiao, Xinhua Liu, Zhilei Wang, Xuexu Xu, Mingying Chen, Jianxin Xie
Summary: The corrosion behavior and mechanisms of Cu-10Ni-X (Al, Fe, Mn, Cr, Sn, Ti, Zn) alloys in a 3.5% NaCl solution were systematically investigated. Both computational and experimental results revealed that except Ti, other elements could enhance the corrosion resistance of Cu2O passivation film.
Article
Materials Science, Multidisciplinary
Gen Zhang, Yan-Ping Huang, E. Jiang, Wei -Wei Liu, Hong Yang, Jing Xiong, Yong-Fu Zhao
Summary: The addition of aluminum has a significant influence on the intermetallic compounds in AFA alloys, particularly increasing the content of B2-NiAl phase. In the SCO2 environment, the oxide scales formed on AFA alloys with aluminum were thinner than on ASS without aluminum, and the structure of the oxide scales changed to a double-layer structure.
Article
Materials Science, Multidisciplinary
Yuxuan He, Guozheng Xiao, Chao Wang, Xuefeng Lu, Liuyuan Li, Shiying Liu, Yusheng Wu, Zhanjie Wang
Summary: The relationship between configurational entropy and lattice distortion in novel rare earth monosilicates was investigated, and the effect of configurational entropy on their properties was studied. The results showed that lattice distortion increased with the increase of configurational entropy, but a highly symmetrical crystal structure was formed when the configurational entropy was large enough, inhibiting the lattice distortion.
