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Journal of Wuhan University of Technology(Materials Science) 2013年第2期28卷 396-399页

作者：王敏白轶 YANG Hui ZOU Haixiao 夏海斌王贻宁 Key Laboratory for Oral Biomedicine of Ministry of Education School and Hospital of Stomatology Wuhan University Department of Implantology School and Hospital of Stomatology Wuhan University Department of Stomatology Shanghai Punan Hospital Department of Prosthodotics School and Hospital of Stomatology Wuhan University

To investigate the bacterial colonization on zirconium oxide and titanium surfaces in vivo quantitatively using a confocal laser scanning microscope （CLSM）. Ten samples of zirconium oxide ceramic and commercially pure titanium were fabricated and polished using silicon carbide abrasive paper. One sample from each group was evaluated topographic pattern under a scanning electron microscope. One sample from each group was to evaluate roughness using a profilometer. Eight volunteers were selected. The samples were cemented at the buccal surfaces of upper first molars. All samples were removed after 48 hours, immersed in SYTO-9 and propidium iodide fluorescent to stain for adherent bacteria and obseIved with CLSM. Fewer bacteria were observed in zirconia group than titanium group. However, there was no statistical difference between two groups. The experimental results demonstrate that zirconium oxide may be considered as a promising material for dental implant abutments.

关键词： dental implant abutment zirconium oxide bacterial colonization confocal laser scanning microscope

zirconium oxide ceramic foam: a promising supporting biomaterial for massive production of glial cell line-derived neurotrophic factor

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2014年第12期15卷 1013-1022页

作者： Zhong-wei LIU Wen-qiang LI Jun-kui WANG Xian-cang MA Chen LIANG Peng LIU Zheng CHU Yong-hui DANG Department of Cardiology the Third Affiliated Hospital of Xi’an Jiaotong University School of Astronautics Northwestern Polytechnic University Department of Psychiatry the First Affiliated Hospital of Xi'an Jiaotong University Department of Neurosurgery the First Affiliated Hospital of Xi'an Jiaotong University College of Medicine & Forensics Xi'an Jiaotong University Health Science Center Key Laboratory of the Health Ministry for Forensic Medicine Health Science CenterXi'an Jiaotong University MOE Key Laboratory of Environment and Genes Related to Diseases Health Science CenterXi’an Jiaotong University

This study investigated the potential application of a zirconium oxide （ZrO2） ceramic foam culturing system to the production of glial cell line-derived neurotrophic factor （GDNF）. Three sets of ZrO2 ceramic foams with different pore densities of 10, 20, and 30 pores per linear inch （PPI） were prepared to support a 3D culturing system. After primary astrocytes were cultured in these systems, production yields of GDNF were evaluated. The biomaterial bio- compatibility, cell proliferation and activation of cellular signaling pathways in GDNF synthesis and secretion in the culturing systems were also assessed and compared with a conventional culturing system. In this study, we found that the ZrO2 ceramic foam culturing system was biocompatible, using which the GDNF yields were elevated and sustained by stimulated cell proliferation and activation of signaling pathways in astrocytes cultured in the system. In conclusion, the ZrO2 ceramic foam is promising for the development of a GDNF mass production device for Parkinson＇s disease treatment.

关键词： zirconium oxide Ceramic foam Glial cell line-derived neurotrophic factor (GDNF) Parkinson's disease

Preparation and properties of ZrO_(2)-strengthened porous mullite insulation materials using Y_(2)O_(3) additive

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Journal of Iron and Steel Research International 2024年第6期31卷 1514-1521页

作者： Wang-zhi Yu Yi-hong Shi Ping Liu Yong-wan Wu Cheng-hao Song Xian-gong Deng Xiang Ding Song-lin Ran Yi Zhang Hai-jun Zhang Hai-liang Deng Advanced Ceramics Research Center School of Materials Science and EngineeringAnhui University of TechnologyMa'anshan 243002AnhuiChina The State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and TechnologyWuhan 430081HubeiChina

ZrO_(2)-strengthened porous mullite insulation materials were prepared by foaming technology utilizing ZrSiO_(4) and Al_(2)O_(3) as primary materials and Y_(2)O_(3) as an *** effects of Y_(2)O_(3) contents on the phase composition,microstructure,mechanical properties,and heat conductivity of the porous mullite insulation materials were investigated.A suitable Y_(2)O_(3) content could promote phase transition of monoclinic ZrO_(2)(m-ZrO_(2))to tetragonal ZrO_(2)(t-ZrO_(2)),reduce pore size,and improve the strengths of as-prepared *** cold crushing strength and bending strength of as-prepared specimens with a 119µm spherical pore size using 6 wt.%Y_(2)O_(3) were 35.2 and 13.0 MPa,respectively,with a heat conductivity being only 0.248 W/(m K).

关键词： Porous mullite insulation material zirconium oxide Y_(2)O_(3) Mechanical property Heat conductivity

Formation process of composite plasma electrolytic oxidation coating containing zirconium oxides on AM50 magnesium alloy

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Transactions of Nonferrous Metals Society of China 2011年第4期21卷 943-948页

作者：刘锋单大勇宋影伟韩恩厚中国科学院金属研究所金属腐蚀与防护国家重点实验室沈阳110016

The formation processes of a composite ceramic coating on AM50 magnesium alloy prepared by plasma electrolytic oxidation （PEO） in a K 2 ZrF 6 electrolyte solution were studied by scanning electron microscope （SEM） and energy dispersive X-ray spectroscope （EDX）. Electrochemical impedance spectroscopy （EIS） tests were used to study the variation of the corrosion resistance of the coating during the PEO treatment. The results show that the coating formed on Mg alloy is mainly composed of MgO and MgF 2 when the applied voltage is lower than the sparking voltage, and zirconium oxides start to be deposited on Mg substrate after the potential exceeding the sparking voltage. The corrosion resistance of the coating increases with increasing the applied voltage.

关键词： plasma electrolytic oxidation coating zirconium oxide MgO corrosion resistance

Corrosion resistance properties of colored zirconium conversion coating and powder coating on cold-rolled steel

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Rare Metals 2023年第3期42卷 1005-1010页

作者： Ai-Hua Wu Yao-Zu Wang Tong-Kuan Xu Zhi Li Sheng-Ji Luan Feng-Zuo Qu Shenzhen Key Laboratory of Environment Simulation and Pollution Control PKU-HKUST Shenzhen-HongKong InstitutionShenzhen 518057China Faculty of Light Industry and Chemical Engineering Dalian Polytechnic UniversityDalian 116034China

Jiuhe Corporation developed a new surface pretreatment for producing a phosphate-free and colored zirconium conversion coating on cold-rolled steel(CRS).Scanning electron microscopy(SEM)and energy-dispersive spectroscopy(EDS)were applied to study the surface morphology and elemental composition of the golden yellow-colored conversion *** trochemic al impedance spectroscopy(EIS)was used to investigate the electrochemical performance of the conversion coatings with different *** corrosion resistance properties of the powder coatings were characterized using the neutral salt spray test(NSS)and the tape adhesion *** EIS and NSS results demonstrate that the colored zirconium conversion coatings exhibit excellent corrosion resistance properties compared with the bare *** golden yellow-colored conversion coating has a maximum EIS value(748Ω·cm^(2))and achieves 0 mm degree of corrosion,as stipulated by EN ISO *** paper proposes a hypothesis concerning the ZrO_(2)-(β-FeOOH)-polymer conversion reaction to explain the color changes.

关键词： Surface pretreatment Colored conversion coating zirconium oxide Powder coating Corrosion protection

Graded Index 532HR/1064HT Filter by Glancing Angle Deposition

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Chinese Physics Letters 2007年第4期24卷 1029-1031页

作者：沈自才刘世杰黄建兵邵建达范正修 Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai 201800 Graduate School of the Chinese Academy of Sciences Beijing 100049

Glancing angle deposition is a novel method to prepare graded index coatings. By using this method and physical vapour deposition, ZrO2 is used to engineer graded index filter on BK7 glass substrate. Controlling the deposition rate and the periodic oscillation of oblique angle of deposited material, a 10-period graded index ZrO2 filter with high reflection near 532nm and high transmittance at wavelength 1064nm is fabricated. The causes of difference between the theoretical and experimental results are discussed in detail. The material properties and electron gun nonlinearity are possibly the main origins of the difference, which result in the variations in both thickness control and deposition rate of the film material.

关键词： SURFACE coatings PHYSICAL vapor deposition GLASS zirconium oxide

ENHANCED ACTIVITY OF Sn1-xZrxO2 SOLID SOLUTION FOR THE SELECTIVE CATALYTIC REDUCTION OF NO IN THE PRESENCE OF O2

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Chinese Journal of Catalysis 1999年第4期 2-3页

作者： Ma Jun, Wei Wei, Cai Xiaohai, Xie Youchang (Institute of Physical Chemistry, Peking University, Beijing 100871)

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关键词： nitric oxide selective reduction tin oxide zirconium oxide solid solution leanburn

Surface finish effect on dry sliding wear behavior of thermally oxidized commercially pure zirconium

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Transactions of Nonferrous Metals Society of China 2019年第1期29卷 88-97页

作者： A.ALANSARI Y.SUN School of Engineering and Sustainable Development Faculty of Technology De Montfort University

The effect of surface polishing on the wear behavior of thermally oxidized commercial pure zirconium (CP-Zr) under dry sliding conditions was investigated. Surface ground CP-Zr with a roughness of 0.21 μm (Ra) was thermally oxidized (TO) at 650 °C for 6 h. After TO, some samples were polished to smoothen the surface with a finish of 0.04 μm (Ra). The response of the polished and unpolished TO samples to dry sliding wear was investigated under unidirectional sliding conditions. The results show that surface polishing after TO affects the dry sliding wear behavior of TO CP-Zr in several aspects, including coefficient of friction, wear rate, crack formation and oxide layer breakdown. In particular, it is found that smoothening the TO surface favors the formation of semi-circular cracks in the wear track and accelerates oxide layer breakdown during dry sliding. A slightly rough TO surface helps to reduce the tendency of the oxide layer towards cracking and to increase the wear resistance at high contact loads. The mechanisms involved are discussed in terms of asperity contacts, crack formation, propagation and final fracture.

关键词： zirconium thermal oxidation zirconium oxide surface finish friction wear

Production of Camphene by Isomerization Reaction on Sulfated ZrO2

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Chinese Journal of Chemical Engineering 2000年第1期 68-71页

作者： Nora Alejandra Comelli,Omar Masini,Alfredo Lzaro Carrascull,Esther Natalia Ponzi,Marta Isabel Ponzi INTEQUI(CONICET-UNSL) Facultad de Ingenieriay Ciencias Economico Sociales 25 de Mayo 384 V.Mercedes (SL) Argentina INTEQUI(CONICET-UNSL) Facultad de Ingenieriay Ciencias Economico Sociales 25 de Mayo 384 V.Mercedes (SL) Argentina INTEQUI(CONICET-UNSL) Facultad de Ingenieriay Ciencias Economico Sociales 25 de Mayo 384 V.Mercedes (SL) Argentina INTEQUI(CONICET-UNSL) Facultad de Ingenieriay Ciencias Economico Sociales 25 de Mayo 384 V.Mercedes (SL) Argentina CINDECA(CONICET-UNLP)Calle 47 N°257 1900 La Plata Argentina

Abstract The kinetics of camphene production in liquid phase from α-pinene was experimentally determinedin an isothermal batch *** this end,a sulfated ZrO2catalyst was used and the reaction studied in thetemperature range of *** analyzing the experimental data,second reaction order for α-pinene wasfound.A kinetic model is presented which includes term for the catalyst load *** specific rate constant at393K was 2.19×10-3mol.L-1,min-1,the activation energy being *** Vaues are within the rangeof literature results.

关键词： camphene kinetics a-pinene zirconium oxide superacid catalyst

Difference of adherence, proliferation and osteogenesis of mesenchymal stem cells cultured on different HA/ZrO2 composites

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Chinese Journal of Traumatology 2012年第3期15卷 131-139页

作者： QUAN Ren-fu TANG Yang-hua HUANG Zhong-ming YANG Di-sheng LI Wei XU Jin-wei WU Xiao-chun China 311200 China 310009 China 200072

Objective： To study the adherence, proliferation and osteogenesis of mesenchymal stem cells （MSCs） cultured on different HA/ZrO2 composites. Methods： The simplex and graded HA/ZrO2 compo- sites were prepared using dry-laid method. The surface topography of the composites was observed by scanning electron microscope （SEM）. The MSCs were isolated from rabbits and cultured on experimental groups （simplex HA/ ZrO2 composite, graded HA/ZrO2 composite, pure HA or pure ZrO2 coatings respectively） and control group （ordinary culture plate）. Then, we observed the adherence, proliferation and osteogenesis of the MSCs, detected the cellular alkaline phosphatase （ALP） activities, extracted total RNA and detected the mRNA expression of collagen I, osteocalcin and osteopontin using the reverse transcription and poly- merase chain reaction （RT-PCR） method. Results： The SEM images confirmed that the surface of the simplex HA/ZrO2 composite was coverd by discontiguous HA layer with clear visualization of the partial ZrO2 matrix, while the surface of the graded HA/ZrO2 composite was fairly rough with porosity. X-ray diffraction showed that after high temperature sintering, the ZrO2 phase still remained, while the HA phase was transformed to β-Ca3 （po4）2＇α-Ca3（PO4）2 and CaZrO3 phases on the surface of both composites. Cell culture indicated that the HA/ ZrO2 composites supported cell attachment. Neither ALP expression nor mRNA expression of collagen I, osteocalcin or osteopontin from RT-PCR results showed significant deviation among four groups. Conclusion： Among these four composites, the graded HA]ZrO2 composite promotes the MSCs proliferation and the osteogenic differentiation to a certain extent.

关键词： zirconium oxide Durapatite Mesenchyreal stem cells