Article
Materials Science, Coatings & Films
Ramesh S. Bhat, P. Nagaraj, Sharada Priyadarshini
Summary: The corrosion performance of Zinc-Nickel monolayer and compositionally modulated multilayer alloy coatings on mild steel was studied, and the efficiency of the deposits against corrosion was optimized by adjusting the switched cathode current density and the number of layers. Under optimized conditions, the Zn-Ni multilayer alloy coatings showed significantly higher corrosion resistance compared to single layer alloy coatings of the same thickness, and scanning electron microscopy was used to investigate coating formation and surface morphology before and after corrosion studies.
SURFACE ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Akshatha R. Shetty, A. Chitharanjan Hegde
Summary: This paper presents the production of Ni-Zn multilayer alloy coating for improving the anticorrosive behavior of mild steel. The study investigates the effect of current densities on the anticorrosive behavior of Ni-Zn and optimizes the current densities to obtain multilayer coatings with different degrees of layering. Results show that the multilayer Ni-Zn alloy coating exhibits significantly higher anticorrosive behavior compared to the monolayer coating. Among all coatings, the (Ni-Zn)(1/3/300) multilayer coating shows the lowest corrosion rate.
Article
Materials Science, Coatings & Films
Yue Guo, Aleksey Rogov, Alexander Hird, Beatriz Mingo, Allan Matthews, Aleksey Yerokhin
Summary: This study investigated the formation of Mg2SiO4 coatings on cp-Mg using Plasma Electrolytic Oxidation (PEO) with sawtooth anodic current pulses. The results showed that the application of sawtooth pulses allowed for control over coating morphology and microdischarge characteristics. Additionally, it was found that the use of anodic sawtooth pulses with a negative ramp facilitated defect healing during coating formation, resulting in more uniform coatings with lower porosity and slower degradation rate of the magnesium substrate.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Jae-Hyeok Park, Kyoung-Pil Ko, Takeshi Hagio, Ryoichi Ichino, Myeong-Hoon Lee
Summary: A novel Zn/Zn-Mg/Zn multilayer coating is prepared on steel plate, and the effect of Zn-Mg interlayer on corrosion resistance is discussed. The coating shows improved corrosion resistance due to the formation of a porous Mg corrosion product layer that permeates chloride ions and helps the coating transform into a protective phase.
Article
Materials Science, Multidisciplinary
Shiyu Huang, Luning Wang, Yufeng Zheng, Lijie Qiao, Yu Yan
Summary: A novel Zn-Cu-Li alloy with layered CuZn4 structure exhibited promising corrosion resistance and mechanical properties in simulated body fluid, particularly in terms of hardness and tensile strength. The Cu element in the alloy not only improved corrosion potential and film properties, but also formed the CuZn4 phase in solid solution state, providing a physical barrier against corrosion.
MATERIALS & DESIGN
(2021)
Article
Materials Science, Multidisciplinary
Andre Barros, Clarissa Cruz, Amauri Garcia, Noe Cheung
Summary: The study focuses on the role of microstructure features in the corrosion behavior of an Al-10wt.%Sn-5wt.%Zn alloy. The results show relatively high electrochemical activity of the alloy and a slight tendency towards improved corrosion resistance with coarsening in microstructure.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Multidisciplinary
Meng Li, Zhang-Zhi Shi
Summary: This study investigated the morphology of nano-scale ZnO corrosion products and their orientation relationship with Zn matrix using TEM. A small volumetric strain of 0.63% was determined to achieve a low energy interfacial structure between the two phases. The method for quickly finding low energy interface under TEM by satisfying multiple Delta g//g in reciprocal space was proposed.
MATERIALS CHARACTERIZATION
(2021)
Article
Engineering, Manufacturing
Tian-Jun Bian, Heng Li, Chao Lei, Chang-Hui Wu, Li-Wen Zhang
Summary: Electrically assisted creep aging (ECA) is a promising forming technology for integral panels, which can achieve a three-step aging process (RRA) to tailor the needed properties balance.
ADVANCES IN MANUFACTURING
(2022)
Article
Materials Science, Multidisciplinary
Ramesh Sooryanarayana Bhat, Manjunatha Krishna Balakrishna, Poornesh Parthasarathy, Ampar Chitharanjan Hegde
Summary: Single-layer and multilayer alloy deposits were electroplated onto a mild steel substrate, consisting of Zn and Fe alloys with different compositions. The corrosion resistance of these deposits was evaluated using potentiodynamic polarization method, while their surface morphology, crystal structure, and Fe content were characterized using scanning electron microscopy, X-ray diffraction, colorimetry, and energy-dispersive X-ray spectroscopy, respectively. The microhardness of the coatings was measured using a Vickers indenter. It was found that the Zn-Fe multilayer coatings showed significantly improved corrosion resistance compared to the single-layer coating, making them crucial for the automotive industry and steel-based vehicle parts.
Article
Materials Science, Multidisciplinary
Yifu Jiang, Siyang Xu, Shuang Gao
Summary: The influence of initial alloy temper on corrosion resistance for Al-Zn-Mg-Cu alloy was investigated. The results showed that specimens after pre-ageing and simulated baking treatment exhibited high strength and improved inter-granular corrosion resistance.
Article
Chemistry, Physical
M. Ramaprakash, Y. Deepika, C. Balamurugan, N. Nagaganapathy, R. Sekar, Subhendu K. Panda, N. Rajasekaran
Summary: Nano-crystalline Ni-W alloy films with variable tungsten compositions were deposited on mild steel substrate using pulse electrodeposition method. The influence of pulse parameters on composition, crystal structure, microhardness and corrosion properties were studied. Tungsten composition in Ni-W alloys affected crystal structure, crystallite size, microhardness, and corrosion resistance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Mechanical
Lavakumar Bathini, M. J. N. V. Prasad, Nitin P. Wasekar
Summary: Ni-W multilayer coatings consisting of alternate soft and hard layers with varying individual layer thickness were deposited using pulse reverse current electrodeposition. These coatings showed reduced residual stresses and maintained high hardness. The soft Ni-W layers effectively accommodated the generated residual stresses. The Ni-W multilayer coating with a specific thickness exhibited improved sliding wear resistance due to low residual stresses and effective thermal diffusion.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Chemistry, Physical
Yumeng Peng, Changang Lai, Ming Zhang, Xianbin Liu, Yanhong Yin, Yesheng Li, Ziping Wu
Summary: A novel zinc-stannum (Zn-Sn) alloy electrode was prepared to solve the dendrite growth and corrosion problems of zinc electrode during cycling. The optimized Zn-Sn10 alloy electrode showed lower voltage hysteresis and non-dendritic topography compared to pure zinc foil electrode, and exhibited improved corrosion resistance in alkaline electrolyte. The assembled Zn-air battery based on this alloy anode electrode showed satisfactory power density, rate properties and cycling life.
JOURNAL OF POWER SOURCES
(2022)
Article
Materials Science, Multidisciplinary
Cui Liu, Yike Li, Qiqi Ge, Zhixian Liu, Aike Qiao, Yongliang Mu
Summary: In this study, a Zn-5wt.%Al alloy tube was prepared, showing high elongation to failure and medium strength. The superplasticity of the alloy is attributed to its unique microstructure. Additionally, the extruded alloy exhibited a higher corrosion rate in the corrosion test.
Article
Chemistry, Physical
Jifei Sun, Xinhua Zheng, Ke Li, Gang Ma, Ting Dai, Boyuan Ban, Yuan Yuan, Mingming Wang, Mingyan Chuai, Yan Xu, Zaichun Liu, Taoli Jiang, Zhengxin Zhu, Jian Chen, Hanlin Hu, Wei Chen
Summary: The HEC of the Zn anode in the acidic electrolyte can be effectively inhibited by alloying it with Al, which improves the cycle performance and discharge voltage of the electrolytic MnO2/Zn-Al battery.
ENERGY STORAGE MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Sandhya Shetty, A. Chitharanjan Hegde
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
(2017)
Article
Chemistry, Physical
Liju Elias, A. Chitharanjan Hegde
JOURNAL OF ALLOYS AND COMPOUNDS
(2017)
Article
Chemistry, Analytical
Sandhya Shetty, M. Mohamed Jaffer Sadiq, D. Krishna Bhat, A. Chitharanjan Hegde
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2017)
Article
Materials Science, Multidisciplinary
Revanna Kullaiah, Liju Elias, Ampar Chitharanjan Hegde
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2018)
Article
Materials Science, Multidisciplinary
Liju Elias, A. Chitharanjan Hegde
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2018)
Article
Chemistry, Multidisciplinary
Sandhya Shetty, M. Mohamed Jaffer Sadiq, D. Krishna Bhat, A. Chitharanjan Hegde
NEW JOURNAL OF CHEMISTRY
(2018)
Article
Chemistry, Multidisciplinary
Jenice Jean Goveas, Sandhya Shetty, Naveen Praveen Mascarenhas, Ampar Chitharanjan Hegde, Richard Adolf Gonsalves
NEW JOURNAL OF CHEMISTRY
(2018)
Article
Polymer Science
Sharmila Muthukrishnan, Akhilesh Tanwar, Sharankumar G. Shetty, Pradeep Singh, Yogesha Subbaiah, Arun Sikder, Radha Kamalakaran, Bander Al-Farhood
POLYMER SCIENCE SERIES A
(2018)
Article
Materials Science, Multidisciplinary
Sangita Nandi, Yogesha Subbaiah, Ravinath Manchana, Susanta Mitra
JOURNAL OF ELASTOMERS AND PLASTICS
(2019)
Article
Chemistry, Analytical
Subbaiah Yogesha, Kumar Arun, Sharankumar G. Shetty, Hegde Ravi, Narayana Ramesh
JOURNAL OF SEPARATION SCIENCE
(2019)
Article
Materials Science, Multidisciplinary
C. Shamitha, Akshatha R. Shetty, A. Chitharanjan Hegde, S. Anandhan
MATERIALS RESEARCH EXPRESS
(2019)
Article
Materials Science, Multidisciplinary
Yogesha Subbaiah, Qua Eng Hau, Ghazai Miqad Al Otaibi
Summary: The present study analyzed trimodal high-density polyethylene samples and found challenges in generating repeatable and reproducible data in the slurry phase polymerization reactors, which could be attributed to different detection modes and the instability of HDPE reactor grades. Among the various instrumentation and detection modes investigated, HT-GPC with IR5 MCT detection showed reliable results.
JOURNAL OF ELASTOMERS AND PLASTICS
(2023)
Article
Chemistry, Inorganic & Nuclear
B. Sachin Kumar, Kartick Tarafder, Akshatha R. Shetty, A. Chitharanjan Hegde, Visweswara C. Gudla, Rajan Ambat, Sreeram K. Kalpathy, S. Anandhan
DALTON TRANSACTIONS
(2019)
Proceedings Paper
Physics, Applied
Akshatha R. Shetty, Ampar Chitharanjan Hegde
ADVANCES IN MECHANICAL DESIGN, MATERIALS AND MANUFACTURE
(2018)
Proceedings Paper
Materials Science, Multidisciplinary
Liju Elias, A. Chitharanjan Hegde
MATERIALS TODAY-PROCEEDINGS
(2018)