Dynamic properties of polymethylvinylsiloxane (PMVS) filled with surface-treated silica (SiO2) were studied using an advanced rheometric expansion system (ARES). The results revealed that the coupling agent, bis (3-t...Dynamic properties of polymethylvinylsiloxane (PMVS) filled with surface-treated silica (SiO2) were studied using an advanced rheometric expansion system (ARES). The results revealed that the coupling agent, bis (3-triethoxysilylpropyl) tetrasulfane (TESPT) exerted a pronounced effect on the storage modulus (G'), and the effect of TESPT involved a frequency-dependent relation.展开更多
Titamum oxide coatings were formed on me titanium net surface by micro-arc oxidation （MAO） in Na3PO4 solution using an AC power supply. Then the titanium oxide coatings were treated by La （NO3）3 soaking to improve...Titamum oxide coatings were formed on me titanium net surface by micro-arc oxidation （MAO） in Na3PO4 solution using an AC power supply. Then the titanium oxide coatings were treated by La （NO3）3 soaking to improve the activity. The structures and photocatalytic ability of titanium oxide coatings before and after surface La （NO3）3 treatment were characterized and evaluated by XRD, SEM, EDX and photocatalytic decoloration of acid brilliant scarlet dye aqueous solution, respectively. The results show that the titanium oxide film is mainly consisted of anatase. After the La（NO3）3 treatment, the sodium ions on TiO2/ Ti film surface are replaced by lanthanum. It is found that the photocatalytic activity of the titanium oxide coatings is enhanced after La（NO3）3 treatment. When La（NO3）3 aqueous concenuration is 0.1 mol·L^-1 and soak time is 12 h, the TiO2/Ti films photocatalytic decoloration rate increases from 15% to 34.8%.展开更多
Severe plastic deformation of Ti-10V-2Fe-3Al alloy in the surface region was caused by shot peening at air pressure of 0.6 MPa with processing time ranging from 1 to 45 min.The results showed that the thickness of sur...Severe plastic deformation of Ti-10V-2Fe-3Al alloy in the surface region was caused by shot peening at air pressure of 0.6 MPa with processing time ranging from 1 to 45 min.The results showed that the thickness of surface deformation layer was proportio nal to the processing time,the microhardness of the shot-peened surface in creased from 280 to 385 HV,and the depth of highly hardening layers arrived at 200μm.It was worth noting that a grain size gradient from nanocrystalline on the surface toward coarse grain in the matrix was obtained during the shot peening process and the minimum grain size in the top surface after shot peening was about 100-200 nm.展开更多
R. K. Jain and R. C. Lind measured large third-order optica1 nonlinear susceptibility andultrafast carrier combination time in the semiconductor microcrystallite-doped filter glass in1983. From then on, semiconductor ...R. K. Jain and R. C. Lind measured large third-order optica1 nonlinear susceptibility andultrafast carrier combination time in the semiconductor microcrystallite-doped filter glass in1983. From then on, semiconductor nanoparticles as a new type of nonlinear opticalmaterial have attracted great attention.展开更多
文摘Dynamic properties of polymethylvinylsiloxane (PMVS) filled with surface-treated silica (SiO2) were studied using an advanced rheometric expansion system (ARES). The results revealed that the coupling agent, bis (3-triethoxysilylpropyl) tetrasulfane (TESPT) exerted a pronounced effect on the storage modulus (G'), and the effect of TESPT involved a frequency-dependent relation.
文摘Titamum oxide coatings were formed on me titanium net surface by micro-arc oxidation （MAO） in Na3PO4 solution using an AC power supply. Then the titanium oxide coatings were treated by La （NO3）3 soaking to improve the activity. The structures and photocatalytic ability of titanium oxide coatings before and after surface La （NO3）3 treatment were characterized and evaluated by XRD, SEM, EDX and photocatalytic decoloration of acid brilliant scarlet dye aqueous solution, respectively. The results show that the titanium oxide film is mainly consisted of anatase. After the La（NO3）3 treatment, the sodium ions on TiO2/ Ti film surface are replaced by lanthanum. It is found that the photocatalytic activity of the titanium oxide coatings is enhanced after La（NO3）3 treatment. When La（NO3）3 aqueous concenuration is 0.1 mol·L^-1 and soak time is 12 h, the TiO2/Ti films photocatalytic decoloration rate increases from 15% to 34.8%.
基金The authors thank Professor Yongxiang Hu for the ns-LSP experiment on Mg-3Gd alloy and his useful discussion.The research was supported by the National Key R&D Program of China(2017YFA0303700)the National Natural Science Foundation of China(NSFC)(11574208).
基金the National Natural Science Foundation of China(Grant No.51361026)the Natural Science Foundation of Jiangxi Province(Grant No.20171BAB206006)+1 种基金the Key Project of Science and Technology Project of Jiangxi Provincial Education Department(Grant No.GJJ160678)Open Foundation of National Defense Key Discipline Laboratory of Light Alloy Processing Science and Technology,Nanchang Hangkong University(GF201501004).
文摘Severe plastic deformation of Ti-10V-2Fe-3Al alloy in the surface region was caused by shot peening at air pressure of 0.6 MPa with processing time ranging from 1 to 45 min.The results showed that the thickness of surface deformation layer was proportio nal to the processing time,the microhardness of the shot-peened surface in creased from 280 to 385 HV,and the depth of highly hardening layers arrived at 200μm.It was worth noting that a grain size gradient from nanocrystalline on the surface toward coarse grain in the matrix was obtained during the shot peening process and the minimum grain size in the top surface after shot peening was about 100-200 nm.
基金The Chimbing Program-National Key Project for Fundamental Research in China
文摘R. K. Jain and R. C. Lind measured large third-order optica1 nonlinear susceptibility andultrafast carrier combination time in the semiconductor microcrystallite-doped filter glass in1983. From then on, semiconductor nanoparticles as a new type of nonlinear opticalmaterial have attracted great attention.
