The Method of Eliminating Micro-crack Defects on the Edge of Ito Blank During Pressure Grouting

Abstract

Disclosed is a method for eliminating ITO green body edge microcrack defects in the pressure slip casting process. The method comprises the steps that a glass plate is arranged on an inward concave face of a left inner mold and a contact face of a right inner mold, the glass plate is pasted on the inward concave face of the left inner mold at this moment, left long rectangular-ambulatory-plane cavities are formed at the non-pasted positions in the height direction and the length direction at equal intervals, the glass plate is pasted on the contact face of the right inner mold, right long rectangular-ambulatory-plane cavities are formed at the non-pasted positions in the height direction and the length direction at equal intervals, spraying materials are sprayed to the left long rectangular-ambulatory-plane cavities and the right long rectangular-ambulatory-plane cavities respectively to form a left long rectangular-ambulatory-plane spraying band and a right long rectangular-ambulatory-plane spraying band, and a water stopping area is formed by the left long rectangular-ambulatory-plane band and right long rectangular-ambulatory-plane band in mold closing in the forming process; the density gradient and a transition layer of an ITO green body in the forming process are eliminated through the water stopping area, it is guaranteed that the overall density and planeness of the ITO green body are consistent, and then the microcrack defects happening to the edge of the ITO green body are eliminated.

Description

technical field [0001] The invention belongs to the technical field of pressure grouting, and in particular relates to a method for eliminating micro-crack defects at the edge of an ITO green body during pressure grouting. Background technique [0002] ITO is the abbreviated name of Tin-doped Indium Oxide. The meaning of ITO refers to an indium tin oxide material. The ITO body is a body made of indium tin oxide. This article focuses on the edge microcracks of the flat ITO body Cause problem. [0003] The mold used in the molding of the flat ITO green body is as follows: figure 1 As shown, the mold is composed of a mold frame, an outer mold, an inner mold, a cavity, a vacuum channel, a slurry inlet channel 10 and a drainage channel 9, wherein the mold frame is divided into a left mold frame 1 and a right mold frame 2, and the outer mold is divided into The left outer mold 3 and the right outer mold 4, the inner mold is divided into a left inner mold 5 and a right inner mold...

AI Technical Summary

Problems solved by technology

[0007] Finally, after the ITO body is demolded, the edge microcrack defect source is retained. In the subsequent drying process, the water in the ITO body evaporates and causes shrinkage, and because the evaporation rate and shrinkage of the edge area of ​​the ITO body If the amount is larger than the middle area, it is prone to substantial micro-crack defects, resulting in unqualified ITO blanks

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