Journal of the Australian Ceramic Society
·
2023
·Vol. 59
·期 4
·915-922
·
IF 1.9
Zhang Jianxiong
ZrO 2 is widely used. However, surface hydrophilicity is harmful to waterproof devices. In this work, epoxy-based polyhedral oligomeric silsesquioxane (POSS) was chemically bonded to ZrO 2 sheet surface for weather-resistant hydrophobicity and anti-adherence property. First, ZrO 2 sheet was modified with hydroxyls, followed by amino modification. Then, surface POSS modification was performed via ring-opening addition. Next, composition and micro-morphology of POSS-treated sheet were clarified. Ultimately, the dependence of water contact angle of POSS-modified sheet on POSS solution treating time was researched, and the highest contact angle of 132.6° was gained by 24-h treating. Acid corrosion, alkali corrosion, and ultraviolet radiation for 48 h were employed to verify good weather resistance with contact angles over 120°. POSS-modified sheet had good anti-adherence capacity. Cooperation of POSS and ZrO 2 was utilized to obtain low surface energy and high surface roughness. This work might help to obtain hydrophobic ceramics as catalyst supports for oil-phase reactions.
研究领域:
材料科学
·
表面化学
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Lin Wang,Liguang Yang,Dehua Ma,Chonghe Xu,Xiaojing Liu,Xinzhu Gan,Pinghui Ge,Luyi Zhu,Gaocheng Zhang
In this study, grooved TiO 2 /ZrO 2 ceramic fibers were prepared via coaxial electrospinning, which exhibit enhanced thermal insulation and superior mechanical properties. The fibers were architected with a distinctive core-shell structure, comprising a TiO 2 shell that serves as an effective radiation shield and a ZrO 2 core that maintains mechanical robustness. The interdiffusion of Zr and Ti atoms at the interface facilitated a seamless transition between TiO 2 and ZrO 2 , effectively inhibiting TiO 2 grain coarsening and substantially enhancing the tensile strength of the fibers, exemplified by the 1.47 ± 0.08 MPa achieved in the TZ-5 sample. Through control of the injection rate during electrospinning, we optimized the fibrous morphology to attain a synergistic balance of strength, flexibility and thermal insulation. The fibers showcased exceptional thermal insulation properties with thermal conductivity values ranging from 0.0294 to 0.0278 W m −1 K −1 and an average infrared reflectance exceeding 87 %. Practical thermal insulation tests confirmed the superior insulation performance of the TiO 2 /ZrO 2 fibrous membranes.
研究领域:
材料科学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2022
·
IF 6.364
Qin Sun,Ludong Yang,Wanchun Yang,Hongjun Ji,Mingyu Li,Yufeng Li
Ceramics and metal joinings have been widely employed in aerospace, dental implants , and the electronic packaging industry for fabricating multifunctional components. In this study, the 35Bi 2 O 3 -50B 2 O 3 -15ZnO (mol.%) glass has been employed for joining the ZrO 2 ceramic and Ti-6Al-4V alloy. The effect of brazing temperature on the microstructure evolution, mechanical properties , and bonding mechanism of brazed joints has been analyzed. The microstructure of the ZrO 2 /glass/Ti-6Al-4V joints and the content of Bi 4 B 2 O 9 , Bi 2 O 3 and Bi 24 B 2 O 39 precipitated crystals in glass were found to be dependent on the brazing temperature. The reaction product of Bi 4 Ti 3 O 12 was identified in the glass/Ti-6Al-4V interface because of the chemical reaction between the oxidized layer of Ti-6Al-4V alloy and glass. A maximum shear strength as high as 48.8 ± 5.2 MPa was obtained. Our work, thus, demonstrates that the 35Bi 2 O 3 -50B 2 O 3 -15ZnO glass is an effective bonding material for joining ZrO 2 ceramic and Ti-6Al-4V alloy under low temperature in an ambient atmosphere.
研究领域:
材料科学
·
焊接工程
✓ 已验证
产品关联
DOI
高影响因子
Materials Express
·
2021
·Vol. 11
·期 9
·1594-1601
·
IF 0
Sun Yonggen,Fei Yanhan,Wang Yanchun,Jin Yuhui,Du Lanjun,Cheng Yuansheng,Du Zhiming
ZrO2-5CrMnMo composites were fabricated by ceramic injection molding in this research. The hardness and wear properties of ZrO2 ceramic layer and 5CrMnMo substrate were investigated. Moreover, physical properties and microstructures of ZrO2 ceramic coatings
were studied and the interfaces of composite samples were observed. The results illustrated that the interface was smooth and properly bonded, and it was concluded that the 5CrMnMo substrate ceramic layer could be provided effectively by ZrO2 ceramic coating. Thermal insulation
and thermal shock cycle tests were carried out. The heat insulating property of ZrO2 ceramic coating was remarkable, and even better at a high temperature. The composite samples prepared at 1200 °C did not failed until after more than 68 thermal shocks. The main reasons of limiting
the application of this composites so far were still the physical and thermodynamic mismatch between ceramics and steel. But the composite samples fabricated by ceramic injection molding showed excellent thermal shock resistance and high bonding strength in this work.
研究领域:
材料科学
·
机械工程
✓ 已验证
产品关联
DOI
Materials Research Express
·
2024
·Vol. 11
·期 7
·076520
·
IF 1.8
Yuanhang Fang,Tingbian Zhan,Xiaojun Li,Changyou Xie,Xinggao Zhang,Weizhan Wang,Xiansong Jiang
A W-Zr alloy doped with ceramic powder W54.5Zr35-xNi6.7Fe3.3Mo0.5 (ZrO2) x was prepared by powder metallurgy. The effects of the ceramic content on the dynamic and static compressive mechanical behavior and energy release properties of the alloy were studied. The results showed that the addition of ceramics enhanced the energy release characteristics of the W-Zr alloy, and made the alloy break more thoroughly and the fragment cloud distribute evenly. The reaction delay time was shorter and the energy release reaction was more complete. However, the maximum temperature of the alloy reaction decreased. In addition, the addition of ceramics improves the mechanical properties of the material, and its compressive strength is much higher than that of traditional W-Zr alloys.(ZrO2)1 exhibited good mechanical behavior and energy release characteristics. The aftereffect damage performance was further verified using a ballistic gun experiment. Ballistic gun test results showed that (ZrO2) 1 can penetrate A92124 aluminum targets with a thickness of 2 mm at a speed of 809.3 m s−1 and ignite post-target absorbent cotton, with both penetration and post-target damage capabilities.
研究领域:
材料科学
·
力学
·
能源材料
✓ 已验证
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2021
·Vol. 104
·期 8
·3855-3861
·
IF 3.784
Jun Chen,Wan-Qing Xue,Chang-Ming Xu,Pai-Feng Luo,Ji-Gui Cheng,Ying-Wei Lu
Monodisperse ZrO 2 ceramic beads with size larger than 1 mm have been prepared by an improved micro-droplet spray forming process, through which a compressor and a dispenser were employed to produce droplets continuously. Furthermore, the slurry recipe and drying temperature have been optimized to enhance the sphericity and smoothness of the beads. The sintered ZrO 2 ceramic beads present promising mechanical performance, including a relative density of 84.6%, a crush strength of 256.2 ± 36.6 N as well as a Vickers hardness of 1344.4 ± 58.3 HV. Such procedure reveals great potential in mass production of ceramic beads.
研究领域:
材料科学
·
陶瓷工程
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2018
·
IF 3.057
Hongli Liu,Guoqing An,Hongyan Li,Zhong Chen,Jing Li,Yajing Li
The SiBCN-ZrO 2 hybrid ceramic aerogels were fabricated by pyrolysis of preceramic aerogels prepared from Polyborosilane/Zirconium 5n-butoxide /Divinylbenzene (PSNB/ZBO/DVB) combining a simple hydrosilylation reaction with CO 2 supercritical drying. The micromorphology and pore structure parameters of the preceramic hybrid aerogels were investigated. Structural evolution of the ceramic hybrid aerogels and the crystallization behavior were studied by scanning electron microscope (SEM), X-ray diffraction (XRD) and transmission electron microscopy (TEM). The results showed that all the preceramic hybrid aerogels had a typical mesoporous structure. The neck region between the particles of SiBCN-ZrO 2 ceramic hybrid aerogels was gradually increased when the sintering temperatures increased from 750 °C to 1550 °C. After heat treatment at 1550 °C, the specific surface area and pore volume for the samples were drastically reduced down to 108.85 m 2 g −1 and 0.49 cm 3 g −1 , respectively. The ZrO 2 nanocrystals were well-distributed in amorphous SiBCN network backbone, the final crystalline phases were composed of hexagonal BN, β-SiC crystals and monoclinic ZrO 2 .
研究领域:
材料科学
·
无机化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2022
·
IF 6.364
Mao chen,Fan Zhang,Hailong Wang,Gang Shao,Bingbing Fan,Rui Zhang,Hongxia Li,Yongqiang Chen
The dense h-BN/ZrO 2 (30 wt%) composites without additives were rapidly fabricated by spark plasma sintering . The relative density, apparent porosity, fracture toughness, flexural strength , phase composition and microstructure of h-BN/ZrO 2 composites were systematically investigated. Besides, the corrosion resistance of h-BN/ZrO 2 composites in molten steel was also studied in detail. Especially, the h-BN/ZrO 2 composites were sintered at 1800 °C exhibiting a relative density of 96.6% and the flexural strength of ≈ 157 MPa. The corrosion of h-BN/ZrO 2 composites was mainly due to the oxidative decomposition of BN, and the corrosion process was clarified by a parabolic law. The excellent corrosion resistance of the h-BN/ZrO 2 composites was attributed to ZrO 2 residual layer formed at the interface. The corrosion thickness of h-BN/ZrO 2 composites was only ∼116 µm even using the longest corrosion time (80 min). The composites could be a promising candidate material applied to fabricated thin strip continuous casting side sealing plates.
研究领域:
材料科学
·
陶瓷工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2020
·Vol. 55
·期 30
·14907-14921
·
IF 3.553
Jia Shaojin,Long Jiating,Li Jiwei,Yang Shaohua,Huang Kaili,Yang Na,Liang Yuhao,Xiao Jun
As one of the components of the lithium ion batteries (LIBs), the separator plays a vital part in the safety and electrochemical performance. In this work, a ZrO 2 -ceramic-coated polyvinylidene fluoride (PVDF) nanofibrous separator for LIBs was successfully prepared by electrospinning, subsequent dopamine hydrophilic modification and biomimetic mineralization process. These preparation processes were environmentally friendly and simple. The ZrO 2 -ceramic coating endows the separator with outstanding electrolyte wettability and thermal stability. To be specific, the separator exhibits higher ionic conductivity (2.261 mS cm −1 ), high porosity (85.1%) and favorable electrolyte wettability (352%), and lower interfacial impedance (220 Ω). Compared with commercial polyolefin separator and PVDF nanofibrous separator, the ZrO 2 -ceramic-coated PVDF nanofibrous separator exhibits excellent rate performance and well cyclic stability. Most importantly the ZrO 2 –PDA/PEI–PVDF separator can still maintain a complete structure even at a high temperature of 300 °C. Compared with commercial separators, it greatly improves the safety of lithium ion batteries at high temperature. Therefore, this separator has far-reaching prospects for improving lithium ion safety and cycle stability.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2019
·
IF 3.45
Xu Rui,Chen Jiansong,Zhao Shijiao,Hao Shaochang,Zhao Xingyu,Li Jianjun,Deng Changsheng,Ma Jingtao
The internal gelation process was combined with a co-axial capillary microfluidic device to prepare monodisperse ZrO 2 ceramic microspheres . Large sized gel microspheres in the range of hundreds of micrometers could be produced with the capillary microfluidic device with co-axial flow structure and the large sized outlet tubing. After drying and sintering, large sized ZrO 2 ceramic microspheres (>200 μm) which had good sphericity and narrow size distribution were prepared.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Applied Ceramic Technology
·
2020
·Vol. 17
·期 5
·2094-2103
·
IF 1.762
Kangkang Yuan,Xiaotong Jin,Xinqiang Wang
In this work, MgO-ZrO 2 and MgO-6YSZ ceramic fibers were prepared with sol-gel method via electrospinning. Polymorph stability and microstructure evolution of zirconia fibers were fully characterized by X-ray diffraction, Raman spectra, X-ray photoelectron spectroscopy, and Scanning electron microscope. The results indicated that tetragonal zirconia for MgO-ZrO 2 was obtained and cubic zirconia could be fully stabilized for MgO-6YSZ with MgO molar fractions varying from 0.1 to 0.5 at 800°C. Monoclinic phase appeared with MgO molar fractions even up to 0.5 for MgO-ZrO 2 system and partially or fully stabilized zirconia could be achieved for MgO-6YSZ at 1000°C and 1200°C. Grain size was gradually decreased with increasing of MgO content at 800°C both for MgO-ZrO 2 and MgO-6YSZ ceramic fibers. The grain size of both systems increased with MgO molar fractions varying from 0.1 to 0.2 and then decreased at higher contents at 1000°C and 1200°C. A discussion on relationship among MgO state and the phase stability and grain size was presented. This work shows surface excess and solid solution of MgO predominantly controlled the phase stability and microstructure evolution of zirconia fibers.
研究领域:
材料科学
·
陶瓷材料
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS CHARACTERIZATION
·
2022
·
IF 4.537
Jianlong Chai,Yabin Zhu,Peng Jin,Tielong Shen,Lijuan Niu,Shufen Li,Minghuan Cui,Zhiguang Wang
SiC-Al 2 O 3 -ZrO 2 ceramic composite with heterointerfaces was prepared by hot pressing and irradiated with 1.2 MeV Si ions at room temperatures. The microstructural evolution and mechanical properties were investigated. The results showed that the phase transformation of zirconia revealed by GIXRD and TEM are associated with the accumulation of oxygen vacancies clusters originated by damage and the size of displacement cascades. Complete amorphization of SiC particles were observed at 5.5 dpa, and developed into collection band at 55 dpa due to the mixture of point defect clusters and extend defects at high damage level. The nanohardness and elastic modulus irradiation decreased with increasing of damage level. The fracture behavior of materials and relative mechanism under ion irradiation were discussed.
研究领域:
材料科学
·
核材料工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）