http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
C. G. Garay-Reyes,S. E. Hernández-Martínez,J. L. Hernández-Rivera,J. J. Cruz-Rivera,E. J. Gutiérrez-Castañeda,H. J. Dorantes-Rosales,J. Aguilar-Santillan,R. Martínez-Sánchez 대한금속·재료학회 2017 METALS AND MATERIALS International Vol.23 No.2
According to Lifshitz, Slyozov, and Wagner (LSW) and Trans-Interface Diffusion-Controlled (TICD) theoreticalmodels, this paper reports the microstructure and its coarsening behavior of γ' metastable-coherentprecipitates in concentration gradient of Ni-13.75Ti (at%)/Ni generated by diffusion couple. The coarseningof precipitates was evaluated in two different Ti contents (R1-11.4Ti (at%) and R2-13Ti (at%)) generated alongthe concentration gradient and includes average size, size distributions and growth rate. The solvus andmetastable-coherent bimodal lines as determined at 850 °C of 9.16 (at%) and 9.92Ti (at%) respectively byscanning electron microscopy. This paper suggests that elastic strains produced by the matrix/precipitate latticemismatch caused significant deviations between the experimental results and those predicted by the LSW or TIDCtheories. Activation energies for TIDC (Qi) and LSW (Qr) are Qr: 219.69 and 172.61 kJ mol-1for R1 and R2regions, respectively, and Qi: 218.46 and 164.56 kJmol-1for R1 and R2 regions, respectively. A concentration gradientallows the study of various alloys with different concentration and volume-fraction in a single sample.
Synthesis of highly carboxylated latex particles using a power feed process
R. Santilla´n,M. Corea,E. Nieves,C.P. Alejandre,C. Gomez-Yanez,J.M. del Rı´o,H. Dorantes-Rosales,M.E. Navarro-Clemente 한국공업화학회 2013 Journal of Industrial and Engineering Chemistry Vol.19 No.4
Two series of highly carboxylated latex particles were synthesized via a power feed process. The concentration carboxylic groups were varied inside the particles and a gradient in the concentration from the interior to the surface was created. The power feed process, proposed by Bassett et al., was used for the synthesis of the functionalized materials and a mathematical model was proposed for this process and theoretical predictions for the concentration of carboxylic groups inside the particles were corroborated with experimental results. A methodology based on thermodynamic formalism is proposed to study the response of these materials to ion exchange.