通过作者查论文: Wan Jiang

文章题目页数

作者: Zhi Xiong, Wan Jiang, Lian Jun Wang, Ying Shi
摘要: Fatigue behaviors of conventional alumina ceramics in cyclic loading with hemisphere and cylinder punches are investigated with modified small punch (MSP) tests. Residual strengths are used to quantify the degree of fatigue damage. The dependences of the residual MSP strength on loading mode, cyclic loading magnitude, frequency, and puncher shape have been discussed in detail. Fatigue behavior studies could be very convenient and effective because MSP tests could perform the cyclic loading and then evaluate the residual strength consistently and effectively.
2426
作者: G. Wang, Wan Jiang, Guang Zhao Bai, Jian Feng Li
91
作者: Jian Ying Gao, Wan Jiang, Gang Wang
摘要: The phase constituent of MoSi2 with 2.0 wt.% La2O3 synthesized by self-propagating high-temperature synthesis (SHS) was studied. It was observed that the addition of La2O3 as a doping agent significantly influences the thermodynamics and kinetics of combustion process when compared with the combustion synthesis of molybdenum disilicide alone. The morphology of the combustion product was investigated using scanning electron microscopy (SEM). The results showed that the addition of La2O3 could obviously decrease the particle size of the combustion product. Hardness and fracture toughness of the material were directly obtained from the sintered product by using micro-indentation technique. The fracture toughness was found to be significantly enhanced with the addition of La2O3.
1623
作者: Shi Ke Zhao, Gang Wang, Wan Jiang, Jing Feng Li, Yong Huang
351
作者: Chao Qin, Lian Jun Wang, Sheng Qiang Bai, Wan Jiang, Li Dong Chen
摘要: Ti5Si3-TiC-Ti3SiC2 composites containing different Ti3SiC2 volume fractions from 0 to 50% were in-situ fabricated by spark plasma sintering using Ti and SiC powders through adjusting the molar ratio of Ti to SiC. The morphologies of the fracture surfaces were analyzed by scanning electron microscopy (SEM). The room temperature mechanical properties of composites including hardness, bending strength and fracture toughness were tested.
1383
作者: Lian Jun Wang, Wan Jiang, Sheng Qiang Bai, Li Dong Chen
摘要: In-situ toughened TiC-Ti5Si3 composites were fabricated using reactive sintering of Ti and SiC via spark plasma sintering (SPS). The focus of this work on the content of TiC in final composites was different. The phase constituents and microstructures of the samples were analyzed by X-ray diffraction (XRD) and scanning electron microscopy (SEM). Fracture toughness at room temperature was also measured by indentation tests. The results showed that the corporation of TiC greatly enhances the fracture toughness of TiC-Ti5Si3 composites.
1885
作者: Guang Zhao Bai, Wan Jiang, Gang Wang
209
作者: Guang Zhao Bai, G. Wang, Wan Jiang, Li Dong Chen, X. Shi
摘要: Thermal conductivity of as-prepared MoSi2/SiC composites has been determined by Laser Flash method. Interfacial thermal conductance for composites with 100nm SiC and with 0.5µm has been determined by using effective medium theory. The results of interfacial thermal conductance exhibit that both the inclusion size and the clustering of the inclusions play an important role in determining composite thermal conductivity.
551
作者: De Gang Zhao, Xiao Ya Li, Yan Hong Cai, Wan Jiang, Li Dong Chen
摘要: Joining of TE material to electrode is the key technique in the construction of TE device for the practical applications. In this study, a suitable alloy electrode was introduced into CoSb3-based element by means of spark plasma sintering (SPS). Finite element analysis showed that the maximum thermal residual stress appeared at the cylindrical surface zone close to the CoSb3/electrode interface. Microstructure of CoSb3/electrode was investigated by EPMA and the intermetallic compound (IMC) layers were found. The shear strength of CoSb3/electrode joints was tested and the results show that the joints have sufficient strength for reliability of TE device. Electrical contact resistance between CoSb3 and electrode was measured by means of four-probe technique. The results show that the contact resistance was minimal and below the 50μΩ.cm2, which meant the joint exhibited a good electrical contact. The high temperature reliability evaluation showed good thermal duration stability of the CoSb3/electrode joints.
313
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