Article
Materials Science, Coatings & Films
Huixia Guo, Qinshuo Sun, Dapeng Zhou, Miao Yu, Yongxin Wang, Qiong Wang, Xiaojing Li
Summary: CrN, CrAlN, and CrAlN/CrN multilayer coatings were deposited on Ti6Al4V substrates using Multi-arc Ion Plating technique. The hardness, elastic modulus, and fracture toughness of the nitride coatings were characterized using nano-indentation and micro-cantilever test. Gas-solid erosion test was conducted to evaluate the erosion performance of the coatings, and the erosion resistance of the tested coatings was analyzed. The interface in the multilayer coating effectively hindered crack propagation, leading to enhanced erosion resistance. Erosion resistance was positively correlated with hardness and fracture toughness, with the CrAlN/CrN multilayer coating showing the best erosion resistance.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Hairui Ma, Qiang Miao, Gaohui Zhang, Wenping Liang, Yang Wang, Ziwang Sun, Hao Lin
Summary: Nitride coatings have been widely used on light alloys like titanium and aluminum to enhance their hardness, thermal stability, and wear resistance. In this study, TiAlSiN/TiN multilayered coating and TiAlSiN single-layer coating were applied on TC18 alloy, with the multilayered coating showing better adhesion, hardness, and wear resistance properties compared to the single-layer coating.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Shahid Anwar, Sheeba Sonali, Sharmistha Anwar
Summary: In this study, AlSi nanocomposite coating was deposited on float glass substrate by RF magnetron sputtering in Ar/N2 reactive atmosphere. The effect of deposition time on microstructure, mechanical and optical properties was investigated. The XRD analysis revealed the formation of h-AlN phase in the film deposited for 2 h, indicating a transition from amorphous to polycrystalline structure. The coating thickness increased with deposition time, as confirmed by stylus profiler. The coating exhibited high optical transparency (>90%) and low surface roughness (Ra < 2 nm). The maximum hardness of the coating was 31 GPa with an elastic recovery of 92%.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Hoe-Kun Kim, Sung-Min Kim, Sang-Yul Lee
Summary: The thickness of the CrZrN/CrZrSiN multilayer coatings was found to have significant effects on their mechanical properties and thermal stability. The coatings exhibited high hardness and elastic modulus, with low friction coefficient. Decreasing the bilayer period improved the adhesion strength and critical load of the multilayer coatings, while maintaining high hardness values at elevated temperatures.
Article
Materials Science, Coatings & Films
Jiaojiao Wu, Mingli Shen, Wei Wang, Yuxian Cheng, Shenglong Zhu
Summary: Thick Cr2N hard coating was obtained using high power arc ion plating to improve the oxidation and wear resistance of Ti6Al4V at medium high temperatures. The coating formed a 1 μm thick Cr2O3 scale after 500 hours of oxidation, while a non-protective TiO2-based scale of 8 μm in thickness was formed on the Ti6Al4V. The Cr2N-coated Ti6Al4V exhibited a significantly reduced wear rate.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Materials Science, Coatings & Films
Haisheng Lin, Chengyong Wang, Zhiwei Lai, Tongchun Kuang, Mohamed Abdou Djouadi
Summary: HfBx coatings were deposited on cemented carbide substrates using DCMS and HiPIMS. The deposition conditions, including temperature, bias voltage, and gas pressure, were analyzed for their effect on the crystal structure and mechanical properties of the coatings. The results showed that DCMS-deposited HfBx had random orientations of HfB2 crystals, while HiPIMS-deposited HfBx had fewer random orientations and a higher intensity in the HfB2(001) direction. Higher temperature, bias voltage, and lower gas pressure favored a stronger HfB2(001)-preferred orientation in the HfBx coatings. DCMS-deposited coatings had a columnar microstructure and rough surface morphology, while HiPIMS-deposited coatings had a dense microstructure and smooth surface due to high ion bombardment. HiPIMS-deposited HfBx coatings exhibited superhardness and high Young's modulus, while DCMS-deposited HfBx coatings had lower hardness. Additionally, the HfBx coatings exhibited excellent adhesion on cemented carbide substrates, attributed to chemical diffusion and mechanical locking at the interface.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Materials Science, Coatings & Films
Rumana Akhter, Avi Bendavid, Paul Munroe
Summary: This study investigates the effects of different substrate bias voltages on the scratch adhesion strength and wear resistance of TiNiN coatings. The results show that the coating prepared at a bias voltage of -100 V exhibits the best scratch adhesion strength, and the wear resistance of the coatings improves as the bias voltage increases. The failure mechanisms of the coatings were also studied through observation of crack patterns and residual stress values.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Guoqing Wu, Xiaoping Chen, Xuanyu Xie, Pu Zhang, Shenyu Ge, Wei Chen, Xian Zeng, Ruoye Wang
Summary: This paper investigates the application of nano SiO2 particle-modified organic silane coatings on deep-sea optical windows. The results indicate that adding an appropriate amount of nano SiO2 particles can enhance the hydrophobicity, hardness, and adhesion of the coating, while maintaining good transparency. However, excessive addition leads to performance degradation. The optimal coating is obtained by adding 0.5 wt% nano SiO2 particles, which exhibits excellent water scouring resistance and microorganism attachment rate.
APPLIED SCIENCES-BASEL
(2022)
Article
Materials Science, Multidisciplinary
Y. Liu, H. D. Liu, Vasiliy Pelenovich, Q. Wan, J. L. Guo, Y. M. Chen, J. Zhang, L. J. Xue, Z. G. Li, B. Yang
Summary: By fabricating multilayer AlTiSiN/AlCrSiN coatings with different modulation periods (Lambda) and systematically investigating the effects of Lambda on the coatings, this study found that the coating at Lambda = 60 nm exhibited optimized hardness and elastic modulus, while the coating at Lambda = 25 nm possessed the highest adhesion strength and lowest coefficient of friction.
Article
Materials Science, Multidisciplinary
Shahid Anwar, Sharmistha Anwar, Barsha Priyadarshini
Summary: In this study, AlSiN ternary coatings were deposited by radio frequency magnetron sputtering in Ar/N-2 reactive atmosphere. The effect of different Ar:N2 ratio on microstructure, mechanical and optical property were investigated using various characterization techniques. The results showed that the composition and ratio of Ar:N-2 influenced the structure and properties of the coatings, with the 20:6 ratio resulting in a nanocrystalline structure and the highest hardness.
Article
Materials Science, Multidisciplinary
Haiqiang Bai, Ling Kang, Pengcheng Zhang, Jing Bai, Jianbo Liu, Baowei Cao, Yunhua Xu
Summary: An effective strategy of in-situ solid-phase diffusion method is proposed to fabricate a TiC-Fe gradient coating with high hardness and interfacial adhesion strength on cast iron. The coating consists of equiaxed TiC particles and alpha-Fe phase, with a high TiC volume fraction of 95%. The phase interface and coating/substrate interface show excellent interfacial bonding at the atomic scale.
Article
Materials Science, Coatings & Films
Shiming Xie, Songsheng Lin, Qian Shi, Wei Wang, Chen Song, Wei Xu, Mingjiang Dai
Summary: In this study, MCrAlY coatings with different microstructures were prepared by arc ion plating to investigate their mechanical and thermal shock properties. The results indicate that the microstructure of the coating significantly impacts its thermal shock properties. A columnar structure exhibited poor thermal shock resistance, while a dense and laminar structure was found to be ideal. Increasing bias voltage during coating preparation can achieve the desired structure but may reduce oxidation resistance.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Engineering, Mechanical
Ke Liu, Fuliang Ma, Ming Lou, Minpeng Dong, Yebiao Zhu, Yongxin Wang, Xuedong Wu, Xiang Liu, Jinlong Li
Summary: In this study, TiAlCN coatings with different aluminum contents were prepared on Ti-6Al-4V alloys using reactive co-sputtering. The coatings exhibited a nanocomposite structure and the hardness decreased with increasing aluminum content. The coating with low aluminum content showed better tribocorrosion performance than those with high aluminum content.
SURFACE TOPOGRAPHY-METROLOGY AND PROPERTIES
(2021)
Article
Materials Science, Multidisciplinary
Matthias Gsellmann, Thomas Kluensner, Christian Mitterer, Martin Krobath, Michael Wurmshuber, Harald Leitner, Werner Ecker, Stefan Marsoner, Verena Maier-Kiener, Daniel Kiener, Gerald Ressel
Summary: Knowledge about the adhesion of protective hard coatings on tool materials is crucial in understanding failure mechanisms in metalworking. The study focused on investigating the interfacial strength and adhesion of TiN deposited on different constituents of high speed steels, providing a ranking of interface strength from high to low values.
MATERIALS & DESIGN
(2021)
Article
Materials Science, Coatings & Films
Jie Liu, Xiangyu Zhang, Xiaomei Zeng, Zechang Xiong, Yan Liu, Yan Lei, Bing Yang
Summary: (AlCrNbSiTi)N coatings were prepared by arc ion plating at bias voltage from -50 to -200 V. The coatings exhibited a face-centred cubic structure with columnar crystals, where Si3N4 acted as a network separating the grains into fine grains. The Si3N4 was present in a crystalline state and grew coherently with surrounding grains, forming a nc-(AlCrNbTi)N/nc-Si3N4 nanocomposite structure. The coating with the best mechanical characteristics was obtained at -200 V, with a hardness of 34.76, elastic modulus of 425 GPa, and wear rate of 0.82 x 10(-9) mm(3) N-1 m(-1). The excellent mechanical performance suggests a wide range of potential applications for the (AlCrNbSiTi)N protective coating.
SURFACE ENGINEERING
(2023)
Article
Chemistry, Physical
Elyorjon Jumaev, Sung Hwan Hong, Jeong Tae Kim, Hae Jin Park, Young Seok Kim, Sang Chul Mun, Jun-Young Park, Gian Song, Jong Kook Lee, Byung Ho Min, Taegyu Lee, Ki Buem Kim
JOURNAL OF ALLOYS AND COMPOUNDS
(2019)
Article
Materials Science, Ceramics
J. T. Kim, S. H. Hong, Y. S. Kim, H. J. Park, T. Maity, N. M. Chawake, K. G. Prashanth, J. M. Park, K. K. Song, W. M. Wang, J. Eckert, K. B. Kim
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2019)
Article
Chemistry, Physical
Young Seok Kim, Hae Jin Park, Sang Chul Mun, Elyorjon Jumaev, Sung Hwan Hong, Gian Song, Jeong Tae Kim, Young Koon Park, Kwang Sik Kim, Se Il Jeong, Young Hyeok Kwon, Ki Buem Kim
JOURNAL OF ALLOYS AND COMPOUNDS
(2019)
Article
Materials Science, Multidisciplinary
Young Seok Kim, Hae Jin Park, Ki Seong Lim, Sung Hwan Hong, Ki Buem Kim
Article
Materials Science, Multidisciplinary
Hae Jin Park, Young Seok Kim, Sang Chul Mun, Sung Hwan Hong, Wei-Min Wang, Ki Buem Kim
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2020)
Article
Materials Science, Multidisciplinary
Sang Chul Mun, Gyeol Chan Kang, Yeon Beom Jeong, Hae Jin Park, Young Seok Kim, Sung Hwan Hong, Gian Song, Ki Buem Kim
Summary: Novel lightweight Al alloys were designed to achieve diverse color range and enhanced mechanical properties by controlling microstructural attributes. The different colors between constitutive phases, their spatial arrangement/dimension, and fraction play a critical role in determining the chromatic characteristic of the alloys. The research demonstrates the feasibility of the current color alloy design concept for ultra-light aluminum-magnesium-silicon alloys.
MATERIALS & DESIGN
(2021)
Article
Materials Science, Multidisciplinary
Sung Hwan Hong, Hae Jin Park, Gian Song, Peter K. Liaw, Ki Buem Kim
Summary: Metallic glasses have been used to develop nano- or ultrafine-structured alloys, but controlling crystallization mechanisms can be challenging due to the high glass-forming ability required in multicomponent systems. This study successfully designed an intermetallic-type metallic glass precursor that crystallized into ultrafine-structured single-phase shape memory alloy. The shape memory alloys exhibited excellent superelastic and shape memory effects, with crystallization kinetics and grain size strongly dependent on isothermal annealing temperatures.
APPLIED MATERIALS TODAY
(2021)
Review
Materials Science, Multidisciplinary
Sung Hwan Hong, Sang Chul Mun, Gyeol Chan Kang, Hae Jin Park, Yeon Beom Jeong, Gian Song, Ki Buem Kim
Summary: This study reviews the strategy of tailoring the intrinsic color characteristics of metallic materials, including single-phase solid-solution alloys and multiphase alloys with specific chromatic phases. Modulation of optical properties in chromatic alloys depends on the transition energy of the solid solution phase, which can be significantly influenced by additional alloying elements. Microstructural design based on multiphase forming alloy system effectively improves chromaticity of the alloys.
PROGRESS IN MATERIALS SCIENCE
(2022)
Article
Chemistry, Physical
Jong Woo Choi, Jeong Tae Kim, Je Hyung Park, Sung Hwan Hong, Hae Jin Park, Taek Jib Choi, Ki Buem Kim
Summary: This study evaluated the microstructure and mechanical properties of as-cast non-equiatomic medium entropy alloys, showing that MEAs with 10% Cr content exhibited the highest yield strength and excellent plastic strain. Abnormal deformation behaviors, such as double-yielding phenomenon, were observed in the stress-strain curve, which was related to phase transformation during compressive loading as confirmed through TEM analysis.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Hae Jin Park, Hee Jin Lee, Tae Kyung Kim, Sung Hwan Hong, Wei-Min Wang, Taek Jib Choi, Ki Buem Kim
Summary: This study focuses on the design and synthesis of tunable metallic glass for functional applications. The unique properties of the Ti-Cu-Ni-Sn metallic glass, determined by the varying oxygen affinities of the constituent elements, enable the homogeneous nucleation and uniform formation of metal oxides. The alloy design and hydrothermal synthesis play a crucial role in determining the characteristics of the metal oxides and the resulting nanostructures and photoelectrode properties. These findings provide a promising roadmap for the application of metallic glasses in photoelectrochemical solar water splitting and other potential areas.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Sung Hwan Hong, Hae Jin Park, Gyeol Chan Kang, Young Seok Kim, Gian Song, Ki Buem Kim
Summary: The designed AB intermetallic compound type high-entropy metallic glass precursor shows high thermal stability and polymorphic crystallization behavior, leading to the formation of nanocrystalline single-phase high-entropy alloy. The nucleation and growth rates for crystallization strongly depend on the annealing temperature. This discovery provides an effective way to develop nanocrystalline single-phase high-entropy alloys by designing intermetallic compound type high-entropy metallic glass precursors.
SCRIPTA MATERIALIA
(2022)
Article
Green & Sustainable Science & Technology
GyeolChan Kang, SangChul Mun, Hae Jin Park, Sung Hwan Hong, SeYoung Oh, Kyo Chul Lee, Ki Buem Kim
Summary: This study focuses on addressing both environmental and consumer demand issues through recycling metal waste materials and developing ecofriendly metal materials that do not use paint or resin.
JOURNAL OF SUSTAINABLE METALLURGY
(2022)
Article
Materials Science, Multidisciplinary
Yeon Beom Jeong, Hee Ra Jo, Hae Jin Park, Hidemi Kato, Ki Buem Kim
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2020)
Article
Materials Science, Multidisciplinary
Min Jung Kim, Gyeol Chan Kang, Sung Hwan Hong, Hae Jin Park, Sang Chul Mun, Gian Song, Ki Buem Kim
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2020)
