Method of preparing lanthanum lead zirconium titanate transparent photoelectric ceramic

A technology of optoelectronic ceramics and lanthanum zirconate titanate, which is applied in the field of low-cost preparation of lanthanum lead zirconate titanate transparent ceramics, can solve problems such as high manufacturing costs, and achieve the effects of low equipment requirements, simple process flow, and low production costs

Inactive Publication Date: 2004-10-20
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to overcome the shortcomings of the existing preparation method of lanthanum lead zirconate titanate transparent optoelectronic ceramics such as high manufacturing cost, the present invention provides a method for preparing transparent optoelectronic ceramics of lead zirconate titanate, which can not only be prepared under normal pressure Lead lanthanum zirconate titanate transparent ceramics with excellent photoelectric properties, and do not use oxygen atmosphere

Method used

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  • Method of preparing lanthanum lead zirconium titanate transparent photoelectric ceramic
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  • Method of preparing lanthanum lead zirconium titanate transparent photoelectric ceramic

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Embodiment 1

[0020] Embodiment 1, earlier use the plumbous oxide of analysis pure (99.9%) level, lanthanum trioxide, zirconium dioxide and titanium dioxide reagent, be (Pb 1-x La x )[(Ti 1-y Zr y ) 1-x / 4 V Bx / 4 ] carry out weighing batching, promptly add-4wt% excessive lead oxide during batching, will add the batching of excessive lead oxide and put into ball mill tank and add the dehydrated alcohol ball mill of 1: 1 5 hours, after drying at 200 ℃, Pre-fired at 900°C for 2 hours, ball milled for 24 hours, dried, sieved, and cold isostatic pressed at 100MPa to make raw culture products with a thickness of 0.3mm and a diameter of 10mm. 3 Sintering at 1200°C for 8 hours under atmosphere protection conditions. After natural cooling, the section of the raw culture product is ground and polished with 1 micron alumina abrasive.

Embodiment 2

[0021] Embodiment 2, earlier use the plumbous oxide of analysis pure (99.9%) grade, lanthanum trioxide, zirconium dioxide and titanium dioxide reagent, be (Pb 1-x La x )[(Ti 1-y Zr y ) 1-x / 4 V Bx / 4 ] carry out weighing batching, promptly add the excessive plumbous oxide of 0wt% during batching, put the batching that adds excessive aluminum oxide into ball mill tank and add the dehydrated alcohol ball mill of 1: 1 for 5 hours, after drying at 200 ℃, in Pre-fired at 900°C for 2 hours, ball milled for 24 hours, dried, sieved, and cold isostatic pressed at 100MPa to make raw culture products with a thickness of 0.3mm and a diameter of 10mm. 3 Sintering at 1200°C for 8 hours under atmosphere protection conditions. After natural cooling, the section of the raw culture product is ground and polished with 1 micron alumina abrasive.

Embodiment 3

[0022] Embodiment 3, earlier use the plumbous oxide of analysis pure (99.9%) grade, lanthanum trioxide, zirconium dioxide and titanium dioxide reagent, be (Pb 1-x La x )[(Ti 1-y Zr y ) 1-x / 4 V Bx / 4 ] carry out weighing batching, promptly add the excess lead oxide of 4wt% during batching, will add the batching of excessive lead oxide and put into ball mill jar and add the dehydrated alcohol ball mill of 1: 1, after drying at 200 ℃, in Pre-fired at 900°C for 2 hours, ball milled for 24 hours, dried, sieved, and cold isostatic pressed at 100MPa to make raw culture products with a thickness of 0.3mm and a diameter of 10mm. 3 Sintering at 1200°C for 8 hours under atmosphere protection conditions. After natural cooling, the section of the raw culture product is ground and polished with 1 micron alumina abrasive.

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Abstract

A process for preparing the transparent photoelectric lanthanum lead zirconate titanate ceramics includes such steps as proportionally mixing lead oxide, La2O3, ZrO2 and TiO2 while adding excesive lead oxide, adding absolute alcohol, ball grinding for 4-6 hr, baking at 200 deg.C, precalcining at 900 deg.C for 2 hr, ball grinding for 18-24 hr, baking, sieving, cold isostatic pressing under 100 MPa for shaping, sintering in PbZrO3 atmosphere at 1200 deg.C for 0.5-12 hr, natural cooling, and polishing by 1-micron alumina p-type adrasive material. It has high optical transmission percentage up to 70%.

Description

technical field [0001] The invention relates to a method for preparing lanthanum lead zirconate titanate transparent photoelectric ceramics, especially a method for preparing transparent ceramics with low cost. Background technique [0002] At present, the known methods for preparing lanthanum lead zirconate titanate transparent optoelectronic ceramics include hot pressing sintering method and oxygen atmosphere sintering method. Literature [G·H.Heartling and C.E.Land, "Hot Pressed(Pb, La)(Zr, Ti)O 3 Ferroelectric Ceramics for Electrooptic Application", J.Amer.Ceram.Soc., 54[1], (1971)] introduces the preparation of lanthanum lead zirconate titanate transparent optoelectronic ceramics by hot pressing sintering method, which needs to be applied in the heating system High pressure makes the process complicated and the equipment is expensive. In addition, the forming mold made of zirconia material by hot pressing sintering method cannot be reused after high temperature and hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/49C04B35/491C04B35/622
Inventor 樊慧庆
Owner NORTHWESTERN POLYTECHNICAL UNIV
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