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| 1 | Effect of Heat Treatment on the Microwave Electromagnetic Properties of Carbonyl Iron/Epoxy-Silicone Resin Coatings显示文摘Microwave absorbing properties of the carbonyl iron particles filled epoxy-silicone resin coatings showed visible degression when the coatings were heat treated at 300 ℃ with different time.The complex permittivity and permeability of the coatings before and after heat treatment were measured.After heat treatment at 300 ℃,the real part of permittivity of the coatings increased with increasing treatment time and showed frequency dependence dielectric response.The complex permeability showed remarkable variation while the resonance frequency of the coatings heat treated at 300 ℃ shifted from 7 to 12 GHz.The electromagnetic results indicated that microwave absorbing properties of the coatings showed more dependent on the complex permeability.The results showed that the difference of the electromagnetic and microwave absorbing properties before and after heat treatment was mainly attributed to the crystalline state transition of carbonyl iron particles. | Yuchang Qing,Wancheng Zhou,Shu Jia,Fa Luo and Dongmei Zhu State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xi an 710072,China | 2010 | Journal of Materials Science & Technology2010，26，11： | 6 |
| 2 | Dielectric Properties of Porous Reaction-boned Si_3N_4 Ceramics with Controlled Porosity and Pore Size显示文摘这篇论文论述反应的微波电介质性质有变体孔和毛孔的结合的多孔的氮化矽陶艺缩放粉末,它被增加形成毛孔的代理人谷物进硅准备。绝缘的常数和样品的绝缘的损失与在样品增加孔显然减少的试验性的结果表演。当孔是不变的时,当毛孔尺寸增加,绝缘的常数和陶艺的绝缘的损失显然减少。在所有获得的样品之中,最小的绝缘的常数是大约 2.4。 | Jie XU Dongmei ZHU Fa LUO Wancheng ZHOU Peng LI | 2008 | Journal of Materials Science & Technology2008，24，2： | 3 |
| 3 | Preparation and Dielectric Properties of Nonstoichiometric β-SiC Powder by Combustion Synthesis显示文摘The nonstoichiometric β-SiC powders were synthesized via combustion reaction of Si and C system in a 0.1 MPa nitrogen atmosphere, using Teflon as the chemical activator. The prepared powders were invistigated by XRD and Raman spectra. The results indicates that the cell parameters of all the prepared β-SiC powder are smaller than the standard value of β-SiC because of generation of CSi defects. The complex permittivity of prepared products was carried out in the frequency range of 8.2-12.4 GHz. It shows that the dielectric property of prepared β-SiC powder decrease with increasing PTFE content. The effect of CSi defects on dielectric property of β-SiC powder has been discussed. | Xiaolei Su Wancheng Zhou Zhimin Li Fa Luo Dongmei Zhu | 2009 | Journal of Materials Science & Technology2009，25，3： | 2 |
| 4 | Application of low-emissivity Pt layer on Ni alloy to high temperature显示文摘Platinum films were sputter-deposited on two groups of nickel alloy substrates,in which the first group was the samples with rough surface,and the other group with polished surface.The platinum thin-films were applied to serve as the low-emissivity layers to reflect thermal radiation.Then,the platinum-coated samples were heated in air at 600℃ for 200 h to explore the effect of high-temperature environment on the emissivity of coated platinum film.After annealing,the average IR emissivity(at the wavelength of 3-14 μm) of the platinum film was only about 0.1 for polished sample and 0.45 for rough sample.The diffusion between platinum and the nickelalloy elements at 600℃ had been also discussed. | Zhibin HUANG Wancheng ZHOU Xiufeng TANG | 2010 | Acta Metallurgica Sinica(English Letters)2010，23，1： | 2 |
| 5 | Microwave electromagnetic properties of carbonyl iron particles and Si/C/N nano-powder filled epoxy-silicone coating显示文摘 | Yuchang Qing Wancheng Zhou Fa Luo Dongmei Zhu | 2009 | Physica B: Physics of Condensed Matter2009，，4： | 1 |
| 6 | Perovskite lithium and bismuth modified potassium-sodium niobium lead-free ceramics for high temperature applications 显示文摘 | DU Hongliang ZHOU Wancheng LUO Fa | 2007 | Appl Phys Lett2007，91，18： | 1 |
| 7 | Microwave electromagnetic property of SiO 2 -coated carbonyl iron particles with higher oxidation resistance显示文摘 | Qing Yuchang Zhou Wancheng Jia Shu Luo Fa Zhu Dongmei | 2010 | Physica B: Physics of Condensed Matter2010，，4： | 1 |
| 8 | Microwave-absorbing and mechanical properties of carbonyl-iron/epoxy-silicone resin coatings显示文摘 | Yuchang Qing Wancheng Zhou Fa Luo Dongmei Zhu | 2008 | Journal of Magnetism and Magnetic Materials2008，，1： | 1 |
| 9 | Preparation and characteristic of NASICON ceramics显示文摘Hot-pressed sintering was employed to prepare the sodium super ionic conductor (Na1+xZr2SixP3-xO12, 1.8≤x≤2.2) ceramics and compare with the sample obtained from normal-press sintering. The phase formation, density, and conductivity of the hot-press sintered and the normal-press sintered samples were investigated in detail. Results show that the density of NASICON ceramics and the degree of crystallization can be improved by hot-press process efficiently. The density of the sample sintered by normal sintering is obviously lower than that sintered by hot press. XRD analysis indicates all the hot press sintered samples contain mainly monoclinic NASICON and no ZrO2 phase was found. The ionic conductivity of normal-press sintered sample is much lower than that of hot-press sintered sample. When the composition is close to Na3Zr2Si2PO12, the dc conductivities of the hot press sintered samples were in the order of 10-3 S·cm-1. The variation of the ac conductivity with frequency in the high frequency region agrees with the power law feature of σ(ω)∝ωn(0 | ZHU Dongmei LUO Fa XIE Zhanglong ZHOU Wancheng | 2006 | Rare Metals2006，25，z1： | 1 |
| 10 | Method for Exploring Glass-forming Regions in New Systems显示文摘 | Zhou Wancheng | 1996 | Non-Cryst Solids1996，201，： | 1 |
| 11 | High per- formance porous Si3 N4 ceramics prepared by coated pore- forming agent method显示文摘 | Li Fangsen Zhou Wancheng Hu Hanjun | 2009 | Ceram Int2009，35，8： | 1 |
| 12 | Temperature dependence of dielectric properties of SiCI/PyC/SiC com- posites显示文摘 | Song Huihui Zhou Wancheng Luo Fa | 2015 | Materials Science and Engineering B2015，195，： | 1 |
| 13 | Mechanical properties and oxidation resistance of SiCf/CVI-SiC com- posites with PIP-SiC interphase 显示文摘 | Donghai Ding Wancheng Zhou Fa Luo | 2012 | Ceramics Internation- al2012，38，： | 1 |
| 14 | Influence of ZnO content and annealing temperature on the dielectric properties of ZnO/A12 03 composite coatings显示文摘 | Zhou Liang Zhou Wancheng Liu Tao | 2011 | Journal of Alloys and Compounds2011，509，19： | 1 |
| 15 | Influence of high temperature heat treatment on the friction properties of carbon/carbon compos ites under wet conditions显示文摘 | Yuan Yidong Luo Ruiying Zhang Fukuan Li Jinsong Liu Tao Zhou Wancheng | 2005 | Materials Science and Engineering A2005，402，12： | 1 |
| 16 | Complex permittivity and microwave absorbing properties of SiC fiber woven fabries显示文摘 | DING Donghai ZHOU Wancheng ZHANG Biao | 2011 | Journal of Materials Science2011，46，8： | 1 |
| 17 | Enhanced mechanical and microwave-absorption properties of SiC f /AlPO 4 composite with PIP–SiC interphase and the MWCNTs filler显示文摘 | Feng Wan Fa Luo Yang Mu Zhiyin Zeng Wancheng Zhou | 2015 | Ceramics International2015，，8： | 1 |
| 18 | Improvement of mechanical and dielectric properties of PIP-SiCf/SiC corn posites by using TiaSiCz as inert filler显示文摘 | Mu Yang Zhou Wancheng Hu Yang | 2015 | Ceramics Inter- national2015，41，2： | 1 |
| 19 | Mechanical properties and oxidation resistance of SiC f /CVI-SiC composites with PIP-SiC interphase显示文摘 | Donghai Ding Wancheng Zhou Fa Luo Malin Chen Dongmei Zhu | 2012 | Ceramics International2012，，5： | 1 |
| 20 | Dip-coating of boron nitride interphase and its effects on mechanical properties of SiC f /SiC composites显示文摘 | Donghai Ding Wancheng Zhou Fa Luo Malin Chen Dongmei Zhu | 2012 | Materials Science & Engineering A2012，，： | 1 |
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