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Preparation method for yttrium aluminium garnet nano-powder

A technology of yttrium aluminum garnet and nano powder, which is applied in the field of materials, can solve the problems of many control variables, complicated process, unfavorable industrial production of YAG powder, etc., and achieves lowering sintering temperature, simplifying process operation flow, and reducing process control parameters. Effect

Inactive Publication Date: 2013-01-30
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] In the above articles and patents, in the process of preparing YAG powder by co-precipitation method, it is necessary to accurately control the parameters such as dropping rate and pH value, and also need to assist some special processes to obtain YAG powder. The process is complicated and variables need to be controlled. Many, not conducive to the industrial production of YAG powder

Method used

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  • Preparation method for yttrium aluminium garnet nano-powder
  • Preparation method for yttrium aluminium garnet nano-powder
  • Preparation method for yttrium aluminium garnet nano-powder

Examples

Experimental program
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Effect test

Embodiment 1

[0046] Accurately weigh a certain mass of Al(NO 3 ) 3 9H 2 O, Y (NO 3 ) 3 ·6H 2 O and NH 4 HCO 3 Prepare a solution with deionized water, the concentrations are [Y 3+ ]=0.09mol / L, [Al 3+ ]=0.15mol / L, [NH 4 HCO 3 ]=1.92mol / L; Measure 250ml Al(NO 3 ) 3 , Y(NO 3 ) 3 Mix the solution evenly, seal it, place it in an ice bath at 0°C, stir and pre-cool to a constant temperature, and keep stirring for use; measure 250ml of NH 4 HCO 3 solution, and adding dodecylbenzenesulfonic acid (C 18 h 30 SO 3 ), stir well and set aside; NH 4 HCO 3 with C 18 h 30 SO 3 Inject the homogeneous solution of the yttrium and aluminum nitrate homogeneous solution that is stirred vigorously at one time, and continue to stir vigorously in an ice bath for 4 hours after sealing, and age to form a milky white colloidal precipitation solution; continue to obtain the milky white colloidal precipitation solution Ultrasonic treatment for 1 h; vacuum filter the precipitated solution after ult...

Embodiment 2

[0048] Accurately weigh a certain mass of Al(NO 3 ) 3 9H 2 O, Y (NO 3 ) 3 ·6H 2 O and NH 4 HCO 3 Prepare a solution with deionized water, the concentrations are [Y 3+ ]=0.09mol / L, [Al 3+ ]=0.15mol / L, [NH 4 HCO 3 ]=1.92mol / L; Measure 250ml Al(NO 3 ) 3 , Y(NO 3 ) 3 solution, seal it at room temperature (about 25°C), stir and mix evenly, and keep stirring for use; measure 250ml of NH 4 HCO 3 solution, and adding dodecylbenzenesulfonic acid (C 18 h 30 SO 3 ), stir well and set aside; NH 4 HCO 3 with C 18 h 30 SO 3 The homogeneous solution is injected into the vigorously stirred yttrium and aluminum nitrate homogeneous solution at one time, after sealing, continue to vigorously stir for 4 hours, and age to form a milky white colloidal precipitation solution; continue to ultrasonicate the obtained milky white colloidal precipitation solution for 1 hour; Vacuum filter the precipitated solution after ultrasonic treatment, and rinse with deionized water and ethan...

Embodiment 3

[0050] Accurately weigh a certain mass of Al(NO 3 ) 3 9H 2 O, Y (NO 3 ) 3 ·6H 2 O and NH 4 HCO 3 Prepare a solution with deionized water, the concentrations are [Y 3+ ]=0.09mol / L, [Al 3+ ]=0.15mol / L, [NH 4 HCO 3 ]=1.92mol / L; Measure 250ml Al(NO 3 ) 3 , Y(NO 3 ) 3 Mix the solution evenly, seal it, place it in a water bath at 50°C, stir and preheat to a constant temperature, and keep stirring for use; measure 250ml of NH 4 HCO 3 solution, and adding dodecylbenzenesulfonic acid (C 18 h 30 SO 3 ), stir well and set aside; NH 4 HCO 3 with C 18 h 30 SO 3 Inject the homogeneous solution of yttrium and aluminum nitrate that is stirred vigorously into the homogeneous solution of nitrate of yttrium and aluminum at one time, and continue to stir vigorously in the water bath for 4 hours after sealing, and age to form a milky white colloidal precipitation solution; continue to ultrasonicate the obtained milky white colloidal precipitation solution Treat for 1 h; vacu...

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Abstract

The invention discloses a preparation method for yttrium aluminium garnet nano-powder, which relates to the material technology. The preparation method for the yttrium aluminium garnet nano-powder comprises the following steps of: 1) configuring Al(NO3)3.9H2O water solution, Y(NO3)3.6H2O water solution and NH4HCO3 water solution; 2) respectively weighing the nitrate solution containing yttrium and aluminium of the equal volume, and evenly mixing; 3) weighing the NH4HCO3 solution which has the equal volume with the aluminium nitrate solution in step 2), adding dodecylbenzene sulfonic acid which accounts for 0.1-1.0wt% of total material mass ratio as dispersing agent, and evenly stirring for standby; 4) injecting mixed precipitating agent solution obtained in step 3) into the mixed raw material solution in step 2), and violently stirring while injecting; 5) continuously violently stirring reaction solution obtained in step 4) for 2-6 hours, and ageing to form milk white colloidal precipitation solution; 6) carrying out ultrasonic treatment; 7) pumping, filtering and flushing in vacuum; 8) drying, grinding and screening; and 9) calcining. According to the preparation method for the yttrium aluminium garnet nano-powder, the technical control parameter is reduced so as to simplify a technical operation flow and improve the efficiency.

Description

technical field [0001] The present invention relates to materials technology. Background technique [0002] Yttrium aluminum garnet (referred to as YAG, chemical formula Y 3 Al 5 o 12 ), belonging to the cubic crystal system, is widely used in the fields of laser and luminescent matrix materials due to its good optical uniformity, good light transmission in the visible and infrared bands, and stable physical and chemical properties. YAG transparent ceramics prepared from YAG nanopowder have excellent optical properties comparable to YAG single crystals, and compared with single crystals, they have high doping concentration and good uniformity, low production cost, and large degree of shape freedom And other advantages, it is possible to replace single crystal as the next generation laser host material. At the same time, Eu 3+ 、Ce 3+ and Tb 3+ Plasma-doped YAG powder is also a phosphor material with excellent performance, and has broad application prospects in cathode ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/626C04B35/50
Inventor 曹林洪马飞
Owner SOUTHWEAT UNIV OF SCI & TECH
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