贾德昌
主要从事先进陶瓷及基复合材料的优化设计、制备、性能评价和损伤机制等方面的科研和教学工作
个性化签名
- 姓名:贾德昌
- 目前身份:
- 担任导师情况:
- 学位:
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学术头衔:
“973”、“863”首席科学家, 博士生导师, 教育部“新世纪优秀人才支持计划”入选者
- 职称:-
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学科领域:
材料科学基础学科
- 研究兴趣:主要从事先进陶瓷及基复合材料的优化设计、制备、性能评价和损伤机制等方面的科研和教学工作
1987.08~1991.07 西北工业大学金属材料及热处理专业 获得学士学位;1991.08~1994.03 哈尔滨工业大学金属材料及热处理专业 获得硕士学位;1994.04~1997.06 哈尔滨工业大学材料学专业 获得博士学位;1997.06~1999.07 哈尔滨工业大学材料科学与工程系 讲师;1999.07~2002.06 哈尔滨工业大学材料科学与工程系 副教授;2002.06~目前 哈尔滨工业大学材料科学与工程系 教授;2003.06~目前 哈尔滨工业大学 博士生导师;2005.11~2006.11 美国伊利诺伊大学国家公派访问学者
中国机械工程学会工程陶瓷专业委员会常务理事;中国硅酸盐学会会员,陶瓷分会理事;美国陶瓷学会会员。2004年国家教育部首批新世纪优秀人才基金获得者,2005年国防科委优秀博士学位获得者,2006年哈尔滨工业大学首批优秀科技创新团队带头人,2007年中国硅酸盐学会和黑龙江省青年科技奖获得者。
主要从事先进陶瓷及基复合材料的优化设计、制备、性能评价和损伤机制等方面的科研和教学工作。完成包括国家自然科学基金、863、国家高新工程、总装备部和国防科工委等各类科研课题20余项;发表论文140余篇(SCI收录60余篇,EI收录80余篇);编撰专著/教材2本(编著《电子材料》版权被台湾沧海书局购买,并已在台湾出版发行);申报国家专利13项(已授权2项)。获国家技术发明二等奖1项,航天工业总公司、国防科工委和教育部科技进步一、二等奖4项。
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826
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成果数
20
【期刊论文】Stacking faults formation mechanism of in situ synthesized TiB whiskers
贾德昌, Haibo Feng, Yu Zhou, Dechang Jia, Qingchang Meng
Scripta Materialia 55(2006)667-670,-0001,():
-1年11月30日
In situ TiB whiskers have a hexagonal shape in the transverse section and grow along the [010]TiB direction. The crystallographic planes of the TiB whiskers in the transverse section are always (100), (101) and (101). The stacking faults in TiB are typically with a stacking fault plane of (100)TiB. The locations of boron atoms and the lattice mismatch energy between TiB and Ti matrix play key roles in the formation of stacking faults.
In situ, TiB, Whisker, Stacking faults
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【期刊论文】Crystallization and Nanograin Growth in SrBi2Ta2O9 Synthesized by a Novel Sol–Gel Process
贾德昌, H. KE, Y. ZHOU, D.C. JIA, W. WANG, X.Q. XU, F. YE
Journal of Sol-Gel Science and Technology 34, 131-136, 2005,-0001,():
-1年11月30日
A novel sol–gel process has been successfully developed for preparing strontium bismuth tantalite (SrBi2Ta2O9, known as SBT) with ethylene alcohol as a solvent and acetic acid as a catalyst. The size of phase-pure SBT nanoparticles could be 4 nm in diameter by avoiding the formation of the fluorite phase at the low temperatures (550–600◦C). The behavior of the crystallization in SBT is investigated by XRD, TG-DTA, FT-IR and TEM. The nanoparticle size as a function of the annealing temperature is also investigated. By fitting the Arrhenius curve, we obtain the crystalline and vitreous growth activation energies, i.e, Ea1 = 0.709 eV and Ea2 = 0.093 eV. The two other fitting parameters, transition temperature T0 = 814 K (541◦C) and transition width △= 0.022, directly show the behavior of the phase transition from vitreous phase to crystalline phase.
SrBi2Ta2O9, sol–gel process, grain growth, fluorite phase, crystallization
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【期刊论文】Rapid synthesis of Ti alloy with B addition by spark plasma sintering
贾德昌, Haibo Feng, Yu Zhou, Dechang Jia, Qingchang Meng
Materials Science and Engineering A390(2005)344-349,-0001,():
-1年11月30日
The in situ TiB/Ti–4.0Fe–7.3Mo composites were fabricated by plasma spark sintering (SPS) technique using mechanical alloying of Ti, Fe65Mo and B powder. The effects of sintering temperature on densification of the composites and microstructure of the in situ synthesized TiB were investigated using scanning electron microscope (SEM) and transmission electron microscope (TEM). A dense composite was obtained after sintering at 1000 ◦C for 5 min. Under proper ball milling and SPS conditions in situ TiB reinforced Ti–4.0Fe–7.3Mo composites have been prepared. The in situ TiB showed a typical needle shape grow along [010] direction. The transverse cross-section of TiB grain is a hexagonal shape with the planes of (100), (101) and (101). The stacking faults in the (100) plane were observed in the TiB needles.
Spark plasma sintering, In situ, TiB, Microstructure
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贾德昌, Haibo Feng , Yu Zhou, Dechang Jia, Qingchang Meng
Composites Science and Technology 64(2004)2495-2500,-0001,():
-1年11月30日
The in situ synthesized TiB reinforced titanium matrix composites have been prepared by spark plasma sintering at 800–1200 ℃ under 20 MPa for 5 min. The effects of sintering temperature and reinforcement volume fraction on flexural strength, Young’s modulus and fracture toughness of the composites are investigated. The titanium matrix consists of α-Ti and β-Ti phases, and the volume fraction of β-Ti increases with increasing sintering temperatures. The in situ synthesized TiB reinforcements are distributed randomly and uniformly in matrix. The transverse section of TiB has a hexagonal shape aligned along [010] direction, and the crystallographic planes of the TiB needles are always of the type (100); (101) and (101). The 10 vol% TiB reinforced composite sintered at 1000 ℃ exhibits excellent mechanical properties. The flexural strength, Young’s modulus and fracture toughness of this composite are 1560 MPa, 137 GPa and 8.64 MPa·1/2, respectively.
Metal matrix composites (, A), , Particle-reinforced composites (, A), , Mechanical properties (, B), , Microstructure (, B), , Spark plasma sintering
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贾德昌, Ye Sun, Qingchang Meng, Dechang Jia, Liangjun Huang
Materials Letters 58(2004)2057-2060,-0001,():
-1年11月30日
Silicon nitride (Si3N4) ceramics incorporated various amount of titanium diboride (TiB2) were fabricated by hot pressing at 1800℃ for 1 h. The influence of TiB2 on the microstructure and mechanical properties of Si3N4 ceramic was investigated. When a small amount of TiB2 (2vol.%) was added, the mechanical properties of Si3N4 were improved significantly, whereas they began to degrade when more TiB2 (>4vol.%) was introduced. The reaction between TiB2 and Si3N4 matrix is responsible for the variation in mechanical properties of the TiB2/Si3N4 composites.
Titanium diboride, Microstructure, Mechanical properties, Silicon nitride
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【期刊论文】Sintering Behavior of Gehlenite, Part II. Microstructure and Mechanical Properties
贾德昌, Dechang Jia, Waltraud M. Kriven
J. Am. Ceram. Soc. , 90[9]2766-2770(2007),-0001,():
-1年11月30日
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【期刊论文】Thermal Shock Resistance of SiC Whisker Reinforced Si3N4 Ceramic Composites
贾德昌, D. C. Jia, Y. Zhou, T. C. Lei
Ceramics International 22(1996)107-112,-0001,():
-1年11月30日
Thermal shock resistance of hot-pressed SiCw/Si3N4(w=whisker) composites was investigated by thermal shock resistance parameters and water quenching test. The results showed that the thermal shock resistance to fracture initiation and crack-stable repropagation deteriorated with increasing SiCw content in spite of the improvement of fracture toughness, K1C. This could be attributed to the great decrease of strength, σand the considerable increase of Young’s modulus, E, and thermal expansion coefficient, α,resulting from the addition of SiC whiskers. The curves of the residual strength, σ,after water quenching versus thermal shock temperature difference, △T, e.g. σ1-△T, showed good relationships with the calculated thermal stress fracture resistance parameter, R, and thermal stress crack stability parameter, Rst. The crack propagation of SiC whisker reinforced Si3N4 occurred primarily in a quasi-static manner, and it could be mainly attributable to SiC whiskers’ pulling-out and bridging toughening effects.
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【期刊论文】Synthesis and properties of sol–gel SBT powder and film
贾德昌, W. Wang, D.C. Jia, Y. Zhou, J.C. Rao, F. Ye
Ceramis International 28(2002)609-615,-0001,():
-1年11月30日
Nanocrystalline powder with particle size 50 nm and thin film with thickness 2 μm of SrBi2Ta2O9 (SBT) were successfully prepared by the sol–gel method, using strontium acetate semihydrate [Sr(CH3COO)2.1/2H2O] and bismth subnitrate [BiO(NO3)], and tantalum ethoxide [Ta(OCH2CH3)5] as source materials, glacial acetic and ethylene glycol as solvents. The XRD and TEM results indicated that SBT layer-perovskite phase powder obtained has to be single phase, Pt layer had a (100) predominate orientation, and the (115), (200) of SBT thin film formed after being annealed at 800 ℃ for 1 min. The typical hysteresis loop of SBT thin film on Pt/Ti/SiO2/Si was obtained, and the measured Pr and Ps values of the SBT thin film were 5.5 and 8.8 μC/cm2, respectively.
A., Sol–gel technique, C., Ferroelectric properties, SrBi2Ta2O9, Thin film
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【期刊论文】Spark plasma sintering reaction synthesized TiB reinforced titanium matrix composites
贾德昌, Haibo Feng, Dechang Jia, Yu Zhou
Composites : Part A 36(2005)558-563,-0001,():
-1年11月30日
The in situ TiB particle reinforced titanium metal matrix composites were prepared using MA followed by park plasma sintering (SPS) with a heating rate of 50℃/min. The in situ TiB were synthesized by chemical reaction between TiB2 and Ti during the SPS process. The microstructure of the composites sintered at 800, 1000 and 1200℃ were investigated. TiB whiskers are needle-shape and uniformly dispersed in the titanium matrix. The interface between the in situ TiB needles and the titanium matrix is singular and faceted. The composite sintered at 1000℃ has a maximum value of relative density of 99.6%, and good mechanical properties with a flexural strength of 1007 MPa, Young’s modulus of 146 GPa and fracture toughness of 8.64 MPa·m1/2, respectively. The fractographs of all composites exhibit a predominantly brittle cleavage fracture mechanism. The elastic modulus of synthesized TiB was estimated.
A., Metal–matrix composites (, MMCs), , A., Particle-reinforcement, B., Microstructure, B., Mechanical properties, Spark plasma sintering
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【期刊论文】Microstructure and mechanical properties of Al-12Ti-6Nb prepared by mechanical alloying
贾德昌, D. C.Jia, Y. Zhou, T. C. Lei
Materials Science and Engineering A232(1997)183-190,-0001,():
-1年11月30日
An alloy Al-12wt.% Ti-6wt.% Nb was prepared by mechanical alloying (MA) process and its microstructure, mechanical properties and thermal stability were investigated. It was shown that the MA Al-12Ti-6Nb is an Al matrix composite with uniformly distributed intermetallic Al3Ti dispersoids and single phase Nb flakes as well as fine equiaxed Al2O3 and rod-shaped Al4C3 phases. In most of the Al3Ti particles, especially the large ones, island-shaped α-Ti cores are normally retained. After exposure at 550℃ in air for 200h, the Al3Ti dispersoids coarsen slowly and their α-Ti cores disappear, while the single phase Nb remains. Compared with the MA Al-12Ti fabricated in the same way, the MA Al-12Ti-6Nb shows much more excellent mechanical properties and thermal stability, which can be attributed to the more effective reinforcement of Al3Ti dispersoids and Nb flakes due to the alleviation of their thermal expansion mismatch with the Al matrix by the addition of Nb.
Microstructure, Mechanical properties, Al-12Ti-6Nb, Mechanical alloying
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