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liulp2008木虫 (小有名气)
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[求助]
麻烦英语高手帮忙翻译下，谢谢！
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| For the seeded growth preparation, nanometer sized zeolite particles are used in suspension to cast seed films. These films are prepared using dip coating, film casting, and electrostatic deposition. The seed films show a high degree of orientation with the[h00] planes of the seed crystals aligned parallel to the substrate surface. A higher degree of orientation where the particles are deposited in a hexagonal packed array can be achieved using dip coating with extremely slow withdrawal rates (~1cm/hr). These seed films are then subjected to a secondary growth process to eliminate the interzeolitic pores and form continuous zeolite layers. This has been achieved with clear solutions or gels resulting in continuous films 0.5 to 7μm thick with a high degree of orientation. The regrowth mechanism was investigated and results indicate that the growth of zeolite A films proceeds by multiple processes including epitaxial growth of the seeds and deposition of particles from solution. |
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liulp2008
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2楼2012-05-21 17:08:56