Article
Chemistry, Physical
Qiang Hu, Dehui Ji, Mingxue Shen, Hui Zhuang, Hailong Yao, Huoping Zhao, Hui Guo, Youliang Zhang
Summary: WC-10Cr(3)C(2)-12Ni coatings were prepared by supersonic flame spraying technology (HVOF) to improve the wear resistance of ball mill liners. Reciprocating sliding tests were conducted under various WC particle size conditions, and the tribological behavior and three-body abrasive wear mechanism of the coatings were investigated. The results showed that the coatings exhibited significantly higher nanohardness and lower coefficient of friction compared to steel. The wear mechanism of the coating primarily involved fatigue and oxidative wear, and the particle size directly affected the wear of the coating.
Article
Engineering, Mechanical
Xiang Ding, Qun Wang, Yinghao Tian, Changchun Yang, Chengqing Yuan, Chidambaram Seshadri Ramachandran
Summary: Rare earth elements are widely used in material manufacturing to enhance properties. In this study, CeO2-modified WC-10Co4Cr coatings were prepared and investigated for their microstructure, mechanical properties, and abrasive wear performance. The addition of CeO2 inhibited the formation of certain phases and resulted in a decrease in porosity and an increase in undissolved Cr-rich areas. However, the CeO2 modification also led to a decrease in abrasive wear resistance due to the preferential removal of Cr-rich areas.
Article
Engineering, Mechanical
S. F. Gnyusov, E. A. Fedin, S. Yu Tarasov
Summary: The relationship between wear behavior and structural-phase state of HSS M2 electron beam cladded coating rubbed against AISI52100 or AISIO7 counterbodies has been established. The wear rate increased with the normal load when rubbing against the AISIO7 counterbody, while the coefficient of friction decreased. The effect of the counterbody on wear and friction at higher speeds was related to the generation of mechanically mixed layers composed of iron tungstate, carbide fragments, and transferred metal.
TRIBOLOGY INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Sheng Hong, Jiyue Qin, Jinran Lin, Yuping Wu, Jiahui Li, Yuan Zheng
Summary: The effects of sand concentrations and flow velocities on the hydro-abrasive erosion behavior of carbide-based cermet coatings were studied. The WC-Cr3C2-Ni coating exhibited better resistance to hydro-abrasive erosion compared to the Cr3C2-NiCr coating. Higher sand concentrations and flow velocities caused more severe hydro-abrasive degradation for both coatings, with flow velocity having a greater influence on erosion resistance than sand concentration.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Ceramics
Sheng Hong, Dongcheng Mei, Jianhua Wu, Jinran Lin, Yuping Wu, Jiahui Li, Yuan Zheng
Summary: This study investigates the responses of a high-velocity oxygen-fuel (HVOF) sprayed WC-10Ni coating to hydro-abrasive erosion (HAE) and cavitation-silt erosion (CSE) in different multiphase flow conditions. The results show that the WC-10Ni coating has higher resistance to HAE and CSE compared to 1Cr18Ni9Ti stainless steel. Increasing flow velocity and sand concentration intensify the degradation of both the WC-10Ni coating and 1Cr18Ni9Ti stainless steel. Cavitation erosion is a significant factor influencing material degradation in relation to flow velocity and sand concentration. The HAE process of the WC-10Ni coating involves the pull-out of hard phase grains, micro-cutting and scoring of the soft binder matrix, and the fracturing of hard phase grains. With higher flow velocity and sand concentration, the WC-10Ni coating experiences the CSE process of erosion pits, scoring of the soft binder matrix, fracturing of hard phase grains, crater formation, coating spalling, and isolation of hard phase grains.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Coatings & Films
Digvijay G. Bhosale, Walmik S. Rathod
Summary: The study shows that tungsten-carbide coatings help reduce gear failures caused by wear in harsh environments. Experimental results indicate that contact pressure and hardness of the counter body significantly influence friction and wear, while the relationship between contact surface temperature and debris adhesion to the surface is also studied.
SURFACE ENGINEERING
(2021)
Article
Materials Science, Ceramics
Lei Qiao, Yuping Wu, Sheng Hong, Weiyang Long, Jie Cheng
Summary: The study found that the WC-CoCr coating exhibited the highest microhardness and the best abrasive wear resistance. Increasing applied load or sediment concentration led to higher wear rates for all coatings.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Wenxiao Ma, Yun Ge, Lixin Zhang, Fei Chen, Yijiang Zheng, Zhuhui Qi
Summary: In this study, 65Mn steel was used as the matrix with WC-10Co-4Cr and WC-10Co-4Cr+CeO2 coatings prepared using the HVOF process to improve surface hardness and reduce porosity, enhancing the surface wear resistance of key parts of agricultural machinery.
Article
Materials Science, Multidisciplinary
Ziyu Wei, Dandong Cui, Zheng Wei, Sheng Hong
Summary: In this study, WC-Cr3C2-Ni and WC-Ni coatings were applied to steel surfaces using HVOF spray. The corrosion behaviors of these coatings in 3.5 wt% NaCl solution with varying Na2S concentrations were investigated. Electrochemical tests were conducted to measure the corrosion resistances of the coatings, while SEM and XPS analysis were used to study their morphologies and corrosion products. It was found that the passivation of the coatings played a key role in their corrosion resistances, with sulphide concentration negatively affecting the integrity of passive films. The WC-Cr3C2-Ni coating exhibited better corrosion resistance due to its stable structure and higher tendency for repassivation.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Jiyue Qin, Zheng Wei, Ziyu Wei, Kailin Wang, Sheng Hong
Summary: Through the study of the effect of sealing treatments on the coating, it was found that all four sealing methods can improve the corrosion resistance of the coating. The vacuum impregnation sealing process can effectively remove residual air, while the aluminum phosphate sealant can create defects due to thermal stress. The vacuum impregnation sealing with silicone resin showed the best performance in improving the corrosion resistance of the coating.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Tribhuwan Kishore Mishra, Arbind Kumar, S. K. Sinha
Summary: This study conducted experimental and comparative investigations on HVOF sprayed coatings under different loads, with the WC-12Co coating showing the best sliding wear resistance and microhardness. The results suggest that the stability of the transfer layer plays a significant role in stable wear, with various aspects and mechanisms of improvements discussed in the paper.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2021)
Article
Materials Science, Characterization & Testing
Halil Kilic, Cenk Misirli, Ibrahim Mutlu, Mustafa Timur
Summary: This research examines the tribological characteristics of a new brake disc created with thermal sprayed WC-10Co4Cr coating, comparing it to a reference disc. The WC-10Co4Cr coating significantly improves the hardness and wear resistance of the brake disc, reducing wear by about 85%. The inclusion of hard phases in the coating improves sliding wear resistance.
Article
Chemistry, Physical
Marzanna Ksiazek, Ilona Nejman, Lukasz Boron
Summary: The HVOF-sprayed WC-Co + Cr coating exhibits a coating with low porosity, compact structure, and good adhesion to the substrate, with a typical lamellar structure composed of fine molten Cr particles and finely fragmented WC grains embedded in a Co matrix. The addition of Cr particles to the WC-Co powder, which causes hardening of the binder phase, is a key influence on increased mechanical and wear properties in the studied system. Due to the construction of nanostructured coatings, suitable proportion of hard and soft phases, the HVOF coatings have advantageous properties such as high density and good slurry erosion resistance.
Article
Engineering, Mechanical
Sheng Hong, Ze Wang, Jinran Lin, Jiangbo Cheng, Wei Sun, Yuan Zheng
Summary: This paper investigates the hydro-abrasive erosion behaviors of carbide-based cermet coatings sprayed by high-velocity oxygen-fuel (HVOF) in simulated seawater slurries. The WC-Ni coating exhibits worse corrosion resistance but superior hydro-abrasive erosion resistance compared to the Cr3C2-NiCr coating. The hydro-abrasive erosion resistance of the WC-Ni coating is less affected by flow velocity and sand concentration, while the Cr3C2-NiCr coating is highly influenced by these factors. Higher flow velocity and sand concentration both contribute to the degradation of the coatings' hydro-abrasive erosion resistance, with flow velocity having a greater effect.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Materials Science, Coatings & Films
Larissa Rossi Gehlen, Giovanni Bolelli, Pietro Puddu, Enrico Forlin, Alberto Colella, Giuseppe Pintaude, Luca Lusvarghi
Summary: The potential of NbC-based coatings was investigated, and they were found to have low porosity, high hardness, good sliding wear resistance, and excellent corrosion resistance, especially at 400 degrees C.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Sohail Ahmed, Xiang Ding, Peter P. Murmu, Nina Bao, Rong Liu, John Kennedy, Lan Wang, Jun Ding, Tom Wu, Ajayan Vinu, Jiabao Yi
Article
Materials Science, Coatings & Films
Yuqin Rao, Qun Wang, Daisuke Oka, Chidambaram Seshadri Ramachandran
SURFACE & COATINGS TECHNOLOGY
(2020)
Article
Nanoscience & Nanotechnology
Sohail Ahmed, Xiang Ding, Xueze Chu, Mengyao Li, Dewei Chu, Tianyi Ma, Tom Wu, Ajayan Vinu, Jiabao Yi
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Materials Science, Multidisciplinary
Yingpeng Zhang, Qun Wang, Chidambaram Seshadri Ramachandran
DIAMOND AND RELATED MATERIALS
(2020)
Article
Materials Science, Coatings & Films
Xiang Ding, Yan Huang, Chengqing Yuan, Zhangxiong Ding
SURFACE & COATINGS TECHNOLOGY
(2020)
Article
Engineering, Mechanical
Yan Huang, Xiang Ding, Cheng-Qing Yuan, Zhong-Kun Yu, Zhang-Xiong Ding
TRIBOLOGY INTERNATIONAL
(2020)
Article
Nanoscience & Nanotechnology
Sohail Ahmed, Xiang-Yuan Carl Cui, Xiang Ding, Peter Paul Murmu, Nina Bao, Xun Geng, Shibo Xi, Rong Liu, John Kennedy, Tom Wu, Lan Wang, Kiyonori Suzuki, Jun Ding, Xueze Chu, Sathish Russellraj Clastinrusselraj Indirathankam, Mingli Peng, Ajayan Vinu, Simon Peter Ringer, Jiabao Yi
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Materials Science, Coatings & Films
Yingpeng Zhang, Qun Wang, Gang Chen, Chidambaram Seshadri Ramachandran
SURFACE & COATINGS TECHNOLOGY
(2020)
Article
Chemistry, Physical
Yingpeng Zhang, Qun Wang, Renfeng Ye, Chidambaram Seshadri Ramachandran
Summary: The plasma electrolytic oxidation (PEO) treatment significantly improves the hardness, elastic modulus, and wear resistance of the carbon nanotube-aluminum (CNT-Al) coatings, making them more effective for applications on AZ91 Mg alloy.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Review
Materials Science, Multidisciplinary
Yingpeng Zhang, Qun Wang, Chidambaram Seshadri Ramachandran, Peng Guo, Aiying Wang
Summary: The paper summarizes the current development of high-velocity oxygen-fuel coupled physical vapor deposition (HVOF-PVD) duplex coatings as protective candidates. The fabrication methods for duplex protective coatings are presented, and the relation between structural characteristics and performance is described. It is demonstrated that the duplex coatings show more excellent overall performance than coatings deposited by both HVOF and PVD separately. The protective performance and promising potential of HVOF-PVD duplex coating for applications are summarized, along with the research prospects of challenges in future.
Article
Quantum Science & Technology
Xiang Ding, Xiangyuan Cui, Ahmed Sohail, Peter P. Murmu, John Kennedy, Nina Bao, Jun Ding, Rong Liu, Mingli Peng, Lan Wang, Xueze Chu, Ajayan Vinu, Simon P. Ringer, Jiabao Yi
Summary: Nd-doping at various concentrations induces room-temperature ferromagnetic ordering in MoS2, with 1 at% Nd-doped MoS2 exhibiting extremely high magnetization. The presence of defects coupled with Nd dopants may play a role in inducing ferromagnetic ordering. The study indicates that layered structured materials with defects and rare earth element doping can lead to materials with extremely high magnetization.
ADVANCED QUANTUM TECHNOLOGIES
(2021)