Papers by Author: Zhi Yang Lian

Abstract: Micro-composite sol-gel coating was introduced into bio-limited forming technology for the first time, and the feasibility of the micro-composite sol-gel coating on microorganism was verified. The composite coated microorganism was observed by using optical microscopy. The results showed that the micro-particles of carbonyl iron could remain being fixed on the surface of cells of spirulina platensis by sol-gel process after repeated washings and collections and by using second sol-gel process the micro structures of microorganism would be kept well after drying. The co-deposition mechanism of the composite coating was also discussed.

Abstract: The nano-composite electroless coating was introduced into bio-limited forming technology for the first time, and the feasibility of the nano-composite electroless coating on microorganism was verified. The composite coated microorganism was analyzed by using optical microscopy, scanning electron microscopy (SEM) and energy dispersive spectrometer (EDS). The results showed that stirring method would make significant effect on the content of nano-particles in the composite coating. And compared with mechanical stirring, the magnetical stirring makes the content of Fe in the composite coating increase almost twice. The co-deposition mechanism of the composite coating was also discussed.

Abstract: Helical structure plays an important role in many fields and the machining quality is important for its applications. In this paper, a kind of functional hollow lightweight metallic micro-helixes based on cells of spirulina was manufactured by bio-limited forming. Then the impurity degree and the un-metallization degree, two important parameters to evaluate the machining quality of the functional micro-helixes in the application to chiral microwave absorbing material were investigated. Numeric models were established and the regularities were researched on how the two parameters are influenced by metallization technology factors. The results showed that the values of these two parameters could be reduced by adjusting the volume of the original deposition solution for 1g filtered wet activated cells, the diluted multiples of the original deposition solution, the temperature of reaction and the time of reaction so as to improve the machining quality.