杨建锋
金属材料及陶瓷材料
个性化签名
- 姓名:杨建锋
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学术头衔:
博士生导师,
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学科领域:
材料科学基础学科
- 研究兴趣:金属材料及陶瓷材料
杨建锋,男,于1965年出生于山西省太原市。1981年考入西安交通大学机械系金属材料及热处理专业。1985年毕业后,被免试推荐攻读硕士研究生,于1988年获工学硕士学位。其后留校任助教,从事金属材料及陶瓷材料的研究和教学。1990年晋升为讲师。1995年4月至1999年3月在日本大阪大学产业科学研究所做研究并在化学系物质化学专攻读博士学位,1999年3月获工学博士学位。1999年3月获日本科技振兴事业团青年特别研究员,进入通产省名古屋工业技术研究所(现独立行政法人产业技术综合研究所),参加了日本国家重大研究项目「协同(Synergy)陶瓷的研究及开发」。2002年3月起为产业技术综合研究所协同材料研究中心的研究员。2003年底,回西安交大工作,并于2004年5月破格提升教授。2004年11月至2005年10月在德国汉堡工业大学以洪堡学者身份作合作研究。近年内参加了日本通商产业省产官学共同研究项目、科技部“十五”863项目、教育部重点项目、国家自然科学基金项目等10余项,主持陕西省科技攻关项目、教育部新世纪优秀人才培养计划项目。发表论文:在国内外发表论文80余篇,SCI检索60余篇,论文他引120余次,申请日本专利6项。主要研究方向为先进陶瓷及复合材料,包括:(1) 新型陶瓷制备工艺;(2)组织、界面、性能及强化机制;(3) 陶瓷基纳米复合材料的增强增韧机理研究;(4)多孔陶瓷材料的气孔尺寸、形态及力学性能控制;(5) 陶瓷-金属复合材料的设计和性能;(6) 应用研究。
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1259
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成果数
20
杨建锋, Jian-Feng Yang*, † and Tatsuki Ohji*, Koichi Niihara*
J. Am. Ceram. Soc., 83 [8] 2094-96 (2000),-0001,():
-1年11月30日
The present study investigates the influence of the content of Y2O3-Al2O3 sintering additive on the sintering behavior and microstructure of Si3N4 ceramics. The Y2O3:Al2O3 ratio was fixed at 5:2, and sintering was conducted at temperatures of 1300°-1900℃. Increased sintering-additive content enhanced densification via particle rearrangement; however, phase transformation and grain growth were unaffected by additive content. After phase transformation was almost complete, a substantial decrease in density was identified, which resulted from the impingement of rodlike b-Si3N4 grain growth. Phase transformation and grain growth were concluded to occur through a solution-reprecipitation mechanism that was controlled by the interfacial reaction.
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杨建锋, G.J. Zhang a, *, M. Ando a, J.F. Yang b, T. Ohji b, S. Kanzaki b
Journal of the European Ceramic Society 24 (2004) 171-178,-0001,():
-1年11月30日
Using boron carbide (B4C) and boron nitride (here refers to hexagonal BN) as reactants, a series of boride-containing ceramic composites, mainly in the present work zirconium diboride-containing composites including zirconium diboride-zirconium carbide (ZrB2-ZrC), zirconium diboride-zirconium nitride (ZrB2-ZrN), zirconium diboride-silicon carbide (ZrB2-SiC) and zirconium diboride-aluminum nitride (ZrB2-AlN) were prepared by in situ reactive hot pressing. The features and the development mechanisms of the composite microstructures were characterized and modeled. The obtained zirconium diboride-containing composites demonstrated high bending strength. In addition, some general problems such as transformation between B4C and BN and thermodynamics of using B4C and BN as reactants were also briefly discussed.
B4C, BN, Ceramic composites, Reaction synthesis, TiB2, ZrB2
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杨建锋, Aranzazu Diazw, z and Stuart Hampshire*, Jian-Feng Yang, y, * Tatsuki Ohji, * and Shuzo Kanzaki*
J. Am. Ceram. Soc., 88 [3] 698-706 (2005),-0001,():
-1年11月30日
Three different series of porous silicon nitride ceramics with volume fraction porosities in the range 0–0.5 were fabricated using different preparation routes: (i) partial sintering, (ii) the addition of fugitive inclusions, and (iii) partial hot pressing. The use of different sintering additives and firing conditions, depending on the preparation route, gives rise to different materials within a certain porosity range with variations in terms of microstructure and grain boundary phase. Mechanical properties, elastic moduli, and strength have been evaluated separately for each series of materials. Porosity dependences of Young's modulus, shear modulus, Poisson's ratio, and fracture strength have been assessed and a comparison of the different materials is made and discussed in relation to their microstructural features.
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杨建锋, Jian-Feng Yang a, c, *, Zhen-Yan Deng b, Tatsuki Ohji c
Journal of the European Ceramic Society 23 (2003) 371-378,-0001,():
-1年11月30日
Porous Si3N4 ceramics were fabricated by liquid-phase sintering with a Yb2O3 sintering additive, and the microstructure and mechanical properties of the ceramics were investigated, as a function of porosity. Low densification was achieved using a lower Yb2O3 additive content. Fibrous β-Si3N4 grains developed in the porous microstructure, and the grain morphology and size were affected by different sintering conditions. A high porosity, ~40-60%, with b-Si3N4 grain development, was obtained by adjusting the additive content. Superior mechanical properties, as well as strain tolerance, were obtained for porous ceramics with a microstructure of fine, fibrous grains of a bimodal size distribution.
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杨建锋, Jian-Feng Yang*, †, Guo-Jun Zhang* and Tatsuki Ohji*
J. Am. Ceram. Soc., 84 [7] 1639-41 (2001),-0001,():
-1年11月30日
Successful net-shape sintering offers a significant advantage for producing large or complicated products. Porous Si3N4 ceramics with very low shrinkage were developed, in the present investigation, by the addition of a small amount of carbon. Carbon powders (1-5 vol%) of two types, with different mean particle sizes (13nm and 5mm), were added to a-Si3N4-5 wt% Y2O3 powders. SiC nanoparticles formed through reaction of the added carbon with SiO2 on the Si3N4 surface or with the Si3N4 particles themselves. Such reactionformed SiC nanoparticles apparently had an effective reinforcing effect, as in nanocomposites. Sintered Si3N4 porous ceramics with a high porosity of 50%-60%, a very small linear shrinkage of ~2%-3%, and a strength of ~100MPa were obtained.
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杨建锋, Jian-Feng Yang, Ji-Hong She, Guo-Jun Zhang, Naoki Kondo and Tatsuki Ohji
key Engineering Materials Vol.247 (2003) pp. 227-230,-0001,():
-1年11月30日
Increasing the porosity of porous ceramics is desirable for application as permeable materials. In this paper, we demonstrate a technique that utilizes the reactions between Si3N4 ceramics was obtained by a small amount of carbon addition (1-5vol%) and 5wt% Y2O3. Increasing the carbon content, porous Si3N4/SiC nanocomposites were obtained. High porous SiC ceramics were fabricated employing pressureless sintering of powder compacts of alpha Si3N4 and carbon powder (Si3N4: C=1:3 by mol), with Y2O3 and Al2O3 as the sintering aids. The shrinking can be greatly restrained by the reaction bonding, this method can be referred to be restraineed sintering by reaction bonding (RSRB). Densification, porosity, pore size, mechanical properties was investigated.
Ceramics,, Porous,, Reaction,, Silicon Carbide,, Silicon Nitride,, Sintering
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【期刊论文】High-Strength Porous Silicon Carbide Ceramics by an Oxidation-Bonding Technique
杨建锋, Jihong She, * Jian-Feng Yang, * Naoki Kondo, * Tatsuki Ohji, * and Shuzo Kanzaki*, Zhen-Yan Deng
J. Am. Ceram. Soc., 85 [11] 2852-54 (2002),-0001,():
-1年11月30日
Porous silicon carbide (SiC) ceramics were fabricated by an oxidation-bonding process in which the powder compacts are heated in air so that SiC particles are bonded to each other by oxidation-derived SiO2 glass. Because of the crystallization of amorphous SiO2 glass into cristobalite during sintering, the fracture strength of oxidation-bonded SiC ceramics can be retained to a relatively high level at elevated temperatures. It has been shown that the mechanical strength is strongly affected by particle size. When 0.6m SiC powders were used, a high strength of 185MPa was achieved at a porosity of 31%. Moreover, oxidation-bonded SiC ceramics were observed to exhibit an excellent oxidation resistance.
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杨建锋, Jian-Feng Yang a, b, *, Shao-Yun Shan a, Rolf Janssen b, Gerold Schneider b, Tatsuki Ohji c, Shuzo Kanzaki c
Acta Materialia 53 (2005) 2981-2990,-0001,():
-1年11月30日
Porous Si3N4 ceramics with a fibrous interlocking microstructure were synthesized directly by carbothermal nitridation (CT/N) of SiO2. Carbon black was used as the carbon source and a-Si3N4 was used as seed. The cold-pressed samples of powder mixtures were heated at nitrogen pressures above 0.6 MPa and temperatures exceeding 1600℃. The addition of the a-Si3N4 to the initial powder mixtures had important effects on the microstructure and mechanical properties of the porous Si3N4. Fine elongated fibrous b-Si3N4 grains were developed in the seeded samples with stoichiometric C-SiO2 ratio and Y2O3 as the sintering additive, when sintered at 1700-1750℃. A sample of outstanding strength resulted, five times stronger than the seed-free samples. Such a technique offers the possibility of synthesizing highly porous and strong Si3N4 materials at considerably lower cost than at present.
Porous materials, Nitride, Sintering, Mechanical properties
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杨建锋, Jian-Feng Yang, *, †, ‡, Guo-Jun Zhang, §, Ji-Hong She, ¶, Tatsuki Ohji, **, † and Shuzo Kanzaki**
J. Am. Ceram. Soc., 87 [9] 1714-1719 (2004),-0001,():
-1年11月30日
Addition of Y2O3 as a sintering additive to porous β-SiAlON (Si6-zAlzOzN8-z, z=0.5) ceramics has been investigated for improved mechanical properties. Porous SiAlON ceramics with 0.05-0.15 wt% (500-1500 wppm) Y2O3 were fabricated by pressureless sintering at temperatures of 1700°, 1800°, and 1850℃. The densification, microstructure, and mechanical properties were compared with those of Y2O3-free ceramics of the same chemical composition. Although this level of Y2O3 addition did not change the phase formation and grain size, the grain bonding appeared to be promoted, and the densification to be enhanced. There was a significant increase in the flexural strength of the SiAlON ceramics relative to the Y2O3-free counterpart. After exposure in 1M hydrochloric acid solution at 70℃ for 120h, no remarkable weight loss and degradation of the mechanical properties (flexural and compression strength) was observed, which was attributed to the limited grain boundary phase, and with the minor Y2O3 addition the supposed formation of Y-α-SiAlON.
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【期刊论文】Microstructure and Mechanical Properties of Silicon Nitride Ceramics with Controlled Porosity
杨建锋, Jian-Feng Yang*, †, Tatsuki Ohji* and Shuzo Kanzaki*, Aranzazu Díaz and Stuart Hampshire*
J. Am. Ceram. Soc., 85 [6] 1512-16 (2002),-0001,():
-1年11月30日
Porous silicon nitride ceramic with a porosity from 0-0.3 was fabricated by partial hot-pressing of a powder mixture of -Si3N4 and 5 wt% Yb2O3 as sintering additive. Irrespective of the porosity, the samples exhibited almost the same microstructural features including grain size, grain aspect ratio, and pore size. Porosity dependences of Young's modulus, flexural strength, and fracture toughness (KIC) were investigated. All these properties decreased with increasing porosity. However,because of the fibrous microstructure, the decreases of flexural strength and fracture toughness were moderate compared with the much greater decrease of Young's modulus. Thus, the strain tolerance (fracture strength/Young's modulus) increased with increasing porosity. The critical energy release rate also increased slightly with an increasing volume fraction of porosity to 0.166 and remained at the same level with that of the dense sample when the porosity was 0.233. They decreased as porosity increased further.
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