MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION
·
2019
·Vol. 70
·期 6
·1044-1055
·
IF 1.458
Junwei Sheng,Xixun Shen,Yaxue Wang,Qunjie Xu,Xiaoxue Zhang
In this paper, the pure Zn coating and Zn-TiN composite coatings containing four different concentrations of TiN particles were prepared on the carbon steel by direct current electrodeposition. The X-ray diffraction and scanning electron microscopy were used to study the crystal size, preferred orientation, and surface morphology of these coatings. The results show that the incorporation of TiN particles refines the crystal size of the Zn coating and results in the formation of a special surface morphology with papillary-shaped clusters structure that preferentially grows along the (100) crystallographic plane. Such a surface provides better hydrophobicity for the Zn-TiN composite coatings. The corrosion behavior of these coatings was evaluated by potentiodynamic polarization, electrochemical impedance spectroscopy and the long-term immersion test. The results show that the incorporation of TiN nanoparticles leads to a significant increase in corrosion resistance of the Zn coating and there is an optimal addition of TiN nanoparticles to provide a best corrosion resistance for the composite coatings. Additionally, the microhardness of prepared coatings was also evaluated.
研究领域:
材料科学
·
表面工程
·
腐蚀与防护
·
金属功能涂层
·
电化学
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2023
·
IF 6.6
Yuhua Dong,Xueyan Du,Yutong Xie,Kexin Wu,Qiong Zhou
A quaternary composite of Ti 3 C 2 /TiO 2 /TiN/polyaniline was synthesized by doping TiN nanoparticles on the calcined Ti 3 C 2 MXene nanosheets , and then polyaniline was deposited through chemical oxidation . The bandgap and flat band potential of composite were determined by X-ray diffraction and ultraviolet–visible spectroscopy. In order to prepare photoanode and photocathodic protective coating, the quaternary composite was added to the polyvinyl alcohol solution and epoxy resin to. Photoelectrochemical results indicated that photoanode and relevant photocathodic protective coating had similar photocurrent with about 5 μA cm −2 , but open circuit potential of the photocathodic protective coating was more negative than that of photoanode. The R ct of photoanode with illumination was 5.5 kΩ, while that of photocathodic coating was 136 kΩ. The 304 stainless steel could be well protected by the photoanode and photocathodic protective coating whether illumination or not, due to synergistic effect of local surface plasmonic resonance of TiN, “electron pool” of polyaniline and non-interfacial contact of TiO 2 and MXene. Moreover, the epoxy resin in the photocathodic coating could act as a kind of physical barrier in the dark environment. Additionally, results of long-term protection test indicated that the photocathodic protective coating under intermittent illumination had better protection property than that of the coating without illumination.
研究领域:
材料科学
·
电化学
·
防腐蚀工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Yupeng Shi,Dan Li,Haoxu Si,Yuping Duan,Chunhong Gong,Jingwei Zhang
Dielectric ceramics composites are potential high-temperature microwave absorption materials (MAMs), and the critical challenge is to achieve high-efficiency and temperature insensitive absorption characteristics suitable for wide temperature and frequency range. Herein, the electromagnetic attenuation properties of TiN/Fe 2 Ni 2 N/SiO 2 composites are studied in detail. The magnetic ceramic composites proposed exhibited stable attenuation behaviors at a wide temperature range (293–873 K). Notably, the optimal reflection loss (RL) value had reached −32.4 dB with a thickness of 2.8 mm at 373 K, and the effective absorption bandwidth (EAB) covered 3.89 GHz at 873 K. The excellent high-temperature attenuation capacity is attributed to the balancing strategy of dielectric and magnetic losses, as well as multiple polarization loss behaviors. The results showed that introducing magnetic components to form magnetic ceramic composites might shed light on the development of the TiN ceramic family for promising MAMs at a wide temperature range.
研究领域:
材料科学
·
电磁学
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2023
·Vol. 13
·期 13
·1984
·
IF 5.3
Wanting Wang,Yuanting Wu,Long Chen,Chenggang Xu,Changqing Liu,Chengxin Li
Plasmonic effect-enhanced Z-type heterojunction photocatalysts comprise a promising solution to the two fundamental problems of current TiO2-based photocatalysis concerning low-charge carrier separation efficiency and low utilization of solar illumination. A plasmonic effect-enhanced TiN@anatase-TiO2/rutile-TiO2Z-type heterojunction photocatalyst with the strong interface of the N–O chemical bond was synthesized by hydrothermal oxidation of TiN. The prepared photocatalyst shows desirable visible light absorption and good visible-light-photocatalytic activity. The enhancement in photocatalytic activities contribute to the plasma resonance effect of TiN, the N–O bond-connected charge transfer channel at the TiO2/TiN heterointerface, and the synergistically Z-type charge transfer pathway between the anatase TiO2(A-TiO2) and rutile TiO2(R-TiO2). The optimization study shows that the catalyst with a weight ratio of A-TiO2/R-TiO2/TiN of approximately 15:1:1 achieved the best visible light photodegradation activity. This work demonstrates the effectiveness of fabricating plasmonic effect-enhanced Z-type heterostructure semiconductor photocatalysts with enhanced visible-light-photocatalytic activities.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Physical Chemistry C
·
2024
·
IF 3.3
Han Liu,Zhiyuan Li,Xiaofeng Zhang,Hao Chen,Shijun Xu,Yi Fan,Qing Yuan,Yi Sun,Xiangshan Hou,Yi He
In this paper, a pulse electrodeposition technique is employed to introduce superhard nanoscale titanium nitride (TiN) particles into the Ni–W–P coating. Moreover, the work extensively examined the impact of varying TiN nanoparticle concentrations on the Ni–W–P coating’s performance. The findings reveal that the introduction of TiN effectively fills the crevices and other imperfections present on the pristine plating layer’s surface, improving the aggregation of grains. The incorporation of TiN nanoparticles, owing to their “labyrinthine effect” and grain refinement capability, notably enhanced the mechanical performance and corrosion resistance of the pure coating. Optimal results are achieved, showcasing superior mechanical attributes and corrosion defense, when the TiN concentration in the bath reaches 4 g/L. Vickers microhardness testing unveils that the Ni–W–P/TiN composite coating, at a TiN loading of 4 g/L, observes its microhardness escalating from 496.6 HV for the pure Ni–W–P coating to 847.6 HV. In a reciprocating friction assessment, the mean friction coefficient diminishes, plummeting from 0.663 for Ni–W–P to 0.325. Regarding corrosion tolerance, the Ni–W–P/TiN (4 g/L) composite coating demonstrates the greatest capacitive arc radius, alongside a corrosion current density diminishing from 26.0 μA/cm2 (Ni–W–P coating) to 11.93 μA/cm2 compared to the unaugmented Ni–W–P coating. Additionally, the self-corrosion potential shifts positively, going upward from −0.536 V for the Ni–W–P coating to −0.323 V. It is further established that the Ni–W–P/TiN composite at 4 g/L surpasses the Ni–W–P coating in corrosion resistance capabilities.
研究领域:
材料科学
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2018
·Vol. 22
·期 7
·1971-1981
·
IF 2.509
Gao Pingping,Xie Zhiyong,Ouyang Chun,Tao Tao,Wu Xiaobo,Huang Qizhong
The Ni-P/TiN/PTFE (poly tetra fluoroethylene) composite coatings were prepared by electroless plating method on Ti plate, which was used as bipolar plates of proton exchange membrane fuel cells (PEMFCs). The morphology, crystallographic texture, electrochemical corrosion, contact resistance, and hydrophobic property of the Ti bipolar plates with coatings were investigated. The results revealed that Ni-P/TiN/PTFE coating had a dense surface morphology, uniform distribution of composite particles. Ti with coating showed 0.48 μA cm 2 of corrosion current in the simulated solution of PEMFCs and 6 mΩ cm 2 of interfacial contact resistance (ICR). The hydrophobicity test showed that the coating interface was flat and the wetting angle was 112.4°. In conclusion, The Ni-P/TiN/PTFE composite coatings exhibit superior improvement in corrosion resistance, interface hydrophobicity, and conductivity to Ni-P, Ni-P/TiN, and Ni-P/PTFE coatings. The Ni-P/TiN/PTFE coating was suited for bipolar plate surface modification of bipolar plates.
研究领域:
材料科学
·
电化学
·
燃料电池技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2019
·Vol. 54
·期 7
·5743-5756
·
IF 3.442
Jiang Wenqi,Fu Qingge,Wei Hengyong,Yao Aihua
We have developed TiN nanoparticles (NPs) as a novel near-infrared-activated photothermal agent. The effect of nitridation temperature on the optical property and photothermal performance of the TiN NPs were investigated. The nanoparticles nitrided at 1000 °C presented a significant absorption along the whole biological spectral range (i.e., for wavelengths above 700 nm). After coated with polystyrene sulfonate (PSS) and poly(diallyldimethylammonium chloride) (PDDA), they exhibited well-defined spherical morphology with average size of ~ 50 nm. We also demonstrated their therapeutic efficacy against SW1990 pancreatic cancer cells. The results indicated that the PSS/PDDA-coated TiN NPs offered several advantages including high photothermal conversion efficiency (44.6%), high photothermal stability, broad spectral tunability, low cytotoxicity and facile synthesis process. These features make TiN NPs promising alternative for use as a photothermal agent in cancer photothermal treatment.
研究领域:
生物医学工程
·
肿瘤学
·
纳米医学
✓ 已验证
DOI
高影响因子
Lubricants
·
2025
·Vol. 13
·期 2
·61
·
IF 2.9
Tiancheng Ye,Kai Le,Ganggang Wang,Zhenghao Ren,Yuzhen Liu,Liwei Zheng,Hui Tian,Shusheng Xu
To improve the friction performance and service life of protective coatings in humidity-fluctuating environments, porous hard titanium nitride (TiN)–molybdenum disulfide (MoS2) composite coatings were prepared by using direct current magnetron sputtering (DCMS) with the mode of oblique angle deposition (OAD) and chemical vapor deposition (CVD) technologies. The structure and chemical component were characterized by field emission scanning electron microscopy (FESEM), energy dispersive spectrometer (EDS), grazing incidence X-ray diffraction (GIXRD), atomic force microscopy (AFM), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy. The tribological properties of these TiN–MoS2composite coatings were investigated. The results indicate that the porous TiN–MoS2composite coating exhibited outstanding friction performance and long service life under humidity-fluctuating environments. At the initial 20% relative humidity (RH) stage, the MoS2on the porous TiN–MoS2composite coating surface worked as an effective lubricant; thus, the coating demonstrated excellent lubrication performance, and the friction coefficient (COF) was about 0.05. As the humidity was alternated to 70% RH, the lubrication effect diminished due to the production of molybdenum oxide (MoO3), and the COF was about 0.2, which was attributed to the degradation of MoS2on the wear track and the release of fresh MoS2from the porous TiN matrix. After the environmental conditions shifted from 70% to 20% RH, the MoO3was removed, and the lubrication effect was restored. In summary, TiN–MoS2porous composite coating offers a promising approach for lubrication in humidity-fluctuating environments.
研究领域:
材料科学
·
表面工程
·
摩擦学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Mue Tang,Yujie Wang,Laizheng Luo,ShiYu Lu,Xiaoyan Liu,Jun Zhang
The development of low-cost and high-efficient electrocatalysts for oxygen reduction reaction (ORR) is a severe challenge for the commercial application of fuel cells. Herein, a durable acidic ORR electrocatalyst composed of carbon nanoparticles decorated on a mesoporous structure of TiN hollow spheres (H-TiN/NC-x) is fabricated for the first time through a hydrothermal-calcination strategy. By moderately adjusting carbon content, the H-TiN/NC-1.00 catalyst exhibits remarkable ORR performance in 0.1 M HClO 4 electrolyte with a half-wave potential of 0.80 V, which is close to commercial Pt/C catalyst (0.83 V). Meanwhile, the catalyst reveals a high selectivity for the four-electron pathway with lower H 2 O 2 yield (7 %) and superior tolerance ability to methanol crossover. More importantly, the H-TiN/NC-1.00 catalyst exhibits a higher stability with negligible activity decay than Pt/C catalyst (ΔE 1/2 = −80 mV) after 10,000 potential cycles. This outstanding ORR performance for H-TiN/NC-1.00 is attributed to the synergistic effect of unique hollow nanostructure and multiple active sites, which can improve electron transfer and ion diffusion/penetration, maintain the structural stability of hollow spheres for exposing more active sites (H-TiN and NC). Our work demonstrates that manipulating surface state and composition of TiN material is a superior method for optimizing ORR performance in fuel cells applications.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2020
·
IF 3.784
Shahid Khan,Shengnan Chen,Yecheng Ma,Mahmood ul Haq,Youduo Li,Mohammad Nisar,Rashid Khan,Yong Liu,Jianxun Wang,Gaorong Han
An ultrasonic assisted spraying method was proposed to prepare TiN films in friendly conditions. The particle size effects of the nano-TiN suspensions upon the film structure, morphology, and optical properties were investigated. The results show that the larger particles (170 nm) form a porous structure, while the smaller ones (60 nm) form a dense structure. Both the films display good thermal stability under 700 °C vacuum annealing. The dense film shows a metal-like behavior of abnormal dispersion in the range over 550 nm, and the annealing process increases the carrier concentration by presenting the red shift of the plasma absorption. The water contact angles of porous films are about 0° and 153° respectively, before and after the annealing process. Such a variation could be attributed to the emerging of TiNO x that reduces the surface activity. The above-stated results demonstrate a promising potential to prepare TiN films by ultrasonic spray method and their applications as super hydrophilic or hydrophobic coatings by control annealing process.
研究领域:
材料科学
·
表面工程
·
物理化学
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Baosong Li,Dandan Li,Jun Zhang,Wei Chen,Weiwei Zhang
The incorporation of TiN and Y 2 O 3 nanoparticles together into Ni-W matrix have been investigated by pulse electrodeposition in present study. The microstructural, surface properties and corrosion resistance of Ni-W/TiN-Y 2 O 3 nanocrystalline coating have been studied. It illustrated that the electrodeposited coatings have dense and nodular structure without defects. Results confirmed that TiN and Y 2 O 3 particles were uniformly embedded in the composites. The embedded particles could improve the hardness and anti-corrosion properties of the obtained coating. The crystallite size calculated based on the preferred orientation (111) plane was of 14–17 nm, illustrating the formation of nanocrystalline structure. The mean R a value was about 84.6 nm. Electrochemical impedance tests revealed that the preferred combination of operating parameters for optimum corrosion resistance was 70%, 1000 Hz, 40 min and 4 A dm −2 . However, the best hardness and anti-wear properties were obtained at parameters of 50%, 500 Hz, 6 Adm −2 and 60 min. The extreme values of hardness and corrosion resistance were not realized simultaneously. The operating parameters should be kept in a certain balance to avoid the formation of inferior properties in any aspects of the coating; then the other performance advantages could be brought into full play. The preferred combination of operating parameters was optimized to be duty cycle of 70%, frequency of 1000 Hz, duration time of 40 min and average current density of 4 Adm −2 , which enabled the electrodeposited coating optimum corrosion resistance and high mechanical properties .
研究领域:
材料科学
·
电化学
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Weiwei Zhang,Shengsong Du,Baosong Li,Tianyong Mei,Yicheng Miao,Hongqiang Chu,Jiajia Wang
In the present work, TiN nanoparticle reinforced Ni-Co alloy coatings have been synthesized by pulse current electrodeposition under the assistance of magnetic and ultrasonic agitation. Various analytical techniques including X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), atomic force microscope (AFM), X-ray photoelectron spectroscopy (XPS) were used to explore the effects of current densities and agitation modes on the coating composition, morphology and structure of the electrodeposits. The corrosion resistance of the composite coating was examined by electrochemical impedance spectroscopy (EIS) in 3.5 wt% NaCl solution. The electrodeposits prepared under magnetic stirring exhibit nodular-protrusion morphology. The ultrasonic-assisted electrodeposited Ni-Co/TiN coatings are flatter, finer, and denser compared to that of magnetic stirring. The agitation mode affects the Co and TiN content in the composite coatings. The preferred orientation was (111) texture, which was gradually changed to (200) plane as the current density increased. The crystallite size was 14–17 nm, 11–14 nm for the magnetic and ultrasonic-assisted electrodeposited Ni-Co/TiN coatings, respectively. The roughness of the samples prepared under ultrasonic agitation was lower than that of magnetic stirring. EIS measurements show that the composite coating prepared at 6 A dm −2 under ultrasonic assistance exhibits the best corrosion resistance with maximum R ct during the whole immersion period. The ultrasonic-assisted electrodeposited Ni-Co/TiN coating has a denser structure and better corrosion resistance than that prepared under mechanical stirring.
研究领域:
材料科学
·
电化学
·
表面工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）