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Concave-convex structure composite fluorescent ceramic for laser illumination and preparation method of concave-convex structure composite fluorescent ceramic
The invention discloses concave-convex structure composite fluorescent ceramic for laser illumination and a preparation method of the concave-convex structure composite fluorescent ceramic. The composite fluorescent ceramic is formed by buckling a fluorescent ceramic body and an Al2O3 ceramic body in a concave-convex mode and tightly bonding the fluorescent ceramic body and the Al2O3 ceramic body in a co-firing mode, the composition of the fluorescent ceramic body is (Re1-xCex) 3Al5O12, Re is one or more of Y and Lu, and x is larger than or equal to 0.005 and smaller than or equal to 0.01; the fluorescent ceramic and the Al2O3 ceramic are cylindrical, the diameter of the bottom surface is 18-22 mm, the height is 1-3 mm, a groove is formed in the cylindrical middle of the fluorescent ceramic, the groove is also cylindrical, the diameter of the cross section is 2-8 mm, and the height is 0.5-1.5 mm; and a convex part corresponding to the groove is arranged in the middle of the cylinder of the Al2O3 ceramic. The preparation method comprises the following steps: preparing a fluorescent ceramic biscuit by adopting a gel casting method, wrapping the periphery of the fluorescent ceramic biscuit with Al2O3 ceramic powder, carrying out dry pressing molding, and carrying out vacuum sintering, air annealing and surface polishing treatment to obtain the composite fluorescent ceramic. The composite ceramic prepared by the invention realizes high-brightness white light emission under the excitation of a blue light LD chip with the wavelength of 455nm, and can bear the excitation power of 10W-12W, the luminous efficiency of 210-270lm/W and the thermal conductivity of 22-28Wm <-1 > k <-1 >.
本发明公开了一种激光照明用凹凸结构复合荧光陶瓷及其制备方法。该复合荧光陶瓷由荧光陶瓷和Al2O3陶瓷凹凸扣合，采用共烧紧密粘合组成，所述荧光陶瓷的组成为(Re1‑xCex)3Al5O12，Re为Y、Lu中的一种或多种，0.005≤x≤0.01；荧光陶瓷和Al2O3陶瓷均呈圆柱形，底面直径18～22mm，高度1～3mm，荧光陶瓷的圆柱形中间设有凹槽，凹槽也呈圆柱形，橫截面直径2～8mm，高度0.5～1.5mm；所述Al2O3陶瓷的圆柱形中间设有与凹槽对应的凸部。先采用凝胶注模法制备荧光陶瓷素坯，再在荧光陶瓷素坯四周包裹Al2O3陶瓷粉体，干压成型，经真空烧结、空气退火、表面抛光处理后得到复合荧光陶瓷。本发明制备的复合陶瓷的在波长为455nm蓝光LD芯片激发下，实现高亮白光发射，可承受激发功率为10W～12W，发光效率210～270lm/W，其热导率为22～28Wm‑1k‑1。
Concave-convex structure composite fluorescent ceramic for laser illumination and preparation method of concave-convex structure composite fluorescent ceramic
The invention discloses concave-convex structure composite fluorescent ceramic for laser illumination and a preparation method of the concave-convex structure composite fluorescent ceramic. The composite fluorescent ceramic is formed by buckling a fluorescent ceramic body and an Al2O3 ceramic body in a concave-convex mode and tightly bonding the fluorescent ceramic body and the Al2O3 ceramic body in a co-firing mode, the composition of the fluorescent ceramic body is (Re1-xCex) 3Al5O12, Re is one or more of Y and Lu, and x is larger than or equal to 0.005 and smaller than or equal to 0.01; the fluorescent ceramic and the Al2O3 ceramic are cylindrical, the diameter of the bottom surface is 18-22 mm, the height is 1-3 mm, a groove is formed in the cylindrical middle of the fluorescent ceramic, the groove is also cylindrical, the diameter of the cross section is 2-8 mm, and the height is 0.5-1.5 mm; and a convex part corresponding to the groove is arranged in the middle of the cylinder of the Al2O3 ceramic. The preparation method comprises the following steps: preparing a fluorescent ceramic biscuit by adopting a gel casting method, wrapping the periphery of the fluorescent ceramic biscuit with Al2O3 ceramic powder, carrying out dry pressing molding, and carrying out vacuum sintering, air annealing and surface polishing treatment to obtain the composite fluorescent ceramic. The composite ceramic prepared by the invention realizes high-brightness white light emission under the excitation of a blue light LD chip with the wavelength of 455nm, and can bear the excitation power of 10W-12W, the luminous efficiency of 210-270lm/W and the thermal conductivity of 22-28Wm <-1 > k <-1 >.
本发明公开了一种激光照明用凹凸结构复合荧光陶瓷及其制备方法。该复合荧光陶瓷由荧光陶瓷和Al2O3陶瓷凹凸扣合，采用共烧紧密粘合组成，所述荧光陶瓷的组成为(Re1‑xCex)3Al5O12，Re为Y、Lu中的一种或多种，0.005≤x≤0.01；荧光陶瓷和Al2O3陶瓷均呈圆柱形，底面直径18～22mm，高度1～3mm，荧光陶瓷的圆柱形中间设有凹槽，凹槽也呈圆柱形，橫截面直径2～8mm，高度0.5～1.5mm；所述Al2O3陶瓷的圆柱形中间设有与凹槽对应的凸部。先采用凝胶注模法制备荧光陶瓷素坯，再在荧光陶瓷素坯四周包裹Al2O3陶瓷粉体，干压成型，经真空烧结、空气退火、表面抛光处理后得到复合荧光陶瓷。本发明制备的复合陶瓷的在波长为455nm蓝光LD芯片激发下，实现高亮白光发射，可承受激发功率为10W～12W，发光效率210～270lm/W，其热导率为22～28Wm‑1k‑1。
Concave-convex structure composite fluorescent ceramic for laser illumination and preparation method of concave-convex structure composite fluorescent ceramic
一种激光照明用凹凸结构复合荧光陶瓷及其制备方法
ZHANG LE (author) / WANG JINHUA (author) / SANG PENGFEI (author) / LIU XUANCHU (author) / SHI CHAOFAN (author) / KANG JIAN (author) / ZHOU CHUNMING (author) / ZHOU TIANYUAN (author) / CHEN HAO (author)
2024-04-09
Patent
Electronic Resource
Chinese
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