Method for raising volume density of sintered body magnesium oxide target material

A technology of bulk density and magnesium oxide, applied in the field of fine chemical industry, can solve the problems of difficult to control product quality, high energy consumption, low yield, etc., and achieve the effect of remarkable product performance and reduction of sintering temperature and sintering time.

Inactive Publication Date: 2011-10-26
LIAONING ZHONGDA SUPERCONDUCTING MATERIAL
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Problems solved by technology

This method has low yield and high energy consumption, and the product quality is difficult to control

Method used

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Embodiment 1

[0022] Taking silica as the sintering agent as an example, take 0.66 kg of magnesia and 2 g of silica, that is, the proportion of sintering agent is 0.3%; the sintering temperature is 1500°C, the constant temperature time is 2 hours, and the sintering atmosphere is atmospheric atmosphere.

[0023] After the implementation of the present invention, the bulk density of the sintered magnesium oxide target is changed from the original 2.82 g / cm 3 Increased to 3.25 g / cm 3 (Compared with the same sintering system but without sintering agent), the sintering cost is reduced by 10% (compared with the energy consumption when reaching the same density).

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Abstract

The invention provides a method for raising the volume density of a sintered body magnesium oxide target material, comprising the following steps of: Step A, a wet material mixing stage: taking a silicon-containing oxide, hydroxide or an organic matter as a sintering agent, and uniformly mixing the sintering agent with a high-purity magnesium raw material; Step B, a sintering stage: sintering the mixed material produced from Step A at the sintering temperature of 1450-1750 DEG C for 2-15 hours of constant temperature time. According to the invention, the technical method is integrated into the whole technology engineering with no need to prolong the technology process and add additional equipment; in addition, the sintering temperature and the sintering time can be greatly reduced. The method provided by the invention has remarkable competitive advantages and profit space in aspects of manufacturing cost, product performance and the like.

Description

technical field [0001] The invention belongs to the technical field of fine chemicals, and relates to a technology for increasing the density of a sintered body magnesium oxide target, in particular to a technical method for increasing the density of a sintered body target for PDP. Background technique [0002] In order to increase the productivity of evaporation, it is necessary to automatically supply samples to the evaporation source one by one. Therefore, the samples are not lumpy, but granular materials are widely used. [0003] Sample particles include single crystals, polycrystals, sintered bodies, and the like. Single crystal is obtained by heating and melting the refined raw material by arc discharge, then slowly cooling to obtain single crystal ingot, and then mechanically pulverized into granular form. The advantage of this single crystal is that it usually has a high purity of more than 99.9%. And it is very dense, and hardly absorbs impurity molecules such as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/04C04B35/622
Inventor 林宇王宁会穆卓艺潘忠艺张百平
Owner LIAONING ZHONGDA SUPERCONDUCTING MATERIAL
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