Manufacturing technique of yttrium zirconium composite nanometre ceramic powder for optical fibre lock pin and ferrule

Abstract

The invention relates to the technical field of ceramic material, in particular to an yttrium zirconium composite nanometre ceramic powder for optical fibre lock pin and ferrule by hydro-thermal method and a manufacturing technique. The invention is characterized in that ammonium hydrogen carbonate releases OH- ions under hydro-thermal circumstances; hydroxide radicals released from pure water form Zr(OH)4 together with zirconium ions in zirconium oxychloride and form Y(OH)3 together with yttrium ions, wherein, the processes are non-reversible; the Zr(OH)4 and Y(OH)3 then spontaneously decompose into Zr4+ and Y3+ which combine with O2- of relatively high concentration in water, thereby forming electrovalent-bond nanometre yttria zirconia composite powder at last. The processes areall non-reversible and spontaneous, thus requiring no manual monitoring and no preparation of precursor followed by hydro-thermal synthesis. The ceramic powder can form a sphere-shaped or sphere-similar structure after spray granulation. Therefore, interior components have compact combination, fine fluidness and excellent conveying property. Thus, the ceramic powder can be directly used for injection moulding optical fibre lock pin and ferrule.

Description

[technical field]

[0001] The invention relates to the technical field of ceramic materials, in particular to a hydrothermal method for preparing yttrium-zirconium composite nano-ceramic powder for optical fiber ferrules and optical fiber sleeves and a production process. [Background technique]

[0002] Yttrium-zirconium composite ceramic powder, zirconia added with yttrium oxide (3mol-5mol content) has toughness and thermal shock resistance that ordinary ceramic materials do not have. It is widely used in structural ceramics, such as valves, pistons, injection plugs, etc. So far, domestic enterprises have adopted the co-precipitation method for production, such as Guangdong Dongfang Zirconium Industry, Jiangxi Fanmeiya Group, and Henan Jiaozuo Weiner Chemical Industry. The product prepared by this method has the disadvantages of low degree of crystallization, excessive particle size, and unstable product performance. These shortcomings greatly restrict the performance of t...