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Forming method for zirconia ceramic products

A technology of zirconia ceramics and zirconia powder, applied in the field of molding zirconia ceramic products, can solve the problems of difficulty in manufacturing large-sized ceramic products, inability to discharge gas products quickly, and general mechanical strength, etc. Operation, high-intensity effect

Active Publication Date: 2016-05-11
DONGGUAN XINBO STRUCTURAL CERAMICS CO LTD
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Problems solved by technology

Since the pores in the injection-molded green body are completely filled with organic binders, which belong to a closed-pore structure, if the temperature rise rate is too fast during thermal degreasing, the gas products inside the green body cannot be discharged quickly, and the increase in air pressure will lead to cracking and bulging. Defects such as bubbles and deformation
Therefore, thermal degreasing often takes tens of hours, is inefficient, and makes it difficult to manufacture large-scale ceramic products
[0005] At present, the mechanical strength of ceramic products made by injection molding process is average, and there is still a technical demand for further improvement

Method used

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  • Forming method for zirconia ceramic products

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Embodiment Construction

[0022] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific implementations disclosed below.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terminology used herein in the description of the present invention is only for the purpos...

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Abstract

The invention discloses a forming method for zirconia ceramic products. The forming method comprises the following steps: weighing yttria-stabilized zirconia powder and a surfactant in a ratio, adding ethanol, carrying out ball-milling mixing, drying, and sieving to obtain a slurry; mixing the slurry with a binder, mixing, and granulating to obtain a feedstock for injection, wherein the binder comprises the following components in parts by mass: 60-65 parts of polyethylene glycol, 15-20 parts of oxidizing high-density polyethylene, 15-20 parts of polyvinyl butyral, and 2-3 parts of stearic acid; carrying out injection forming on the feedstock to obtain green bodies; placing the green bodies in water and carrying out water debinding, and carrying out thermal debinding to obtain blanks; sintering the blanks to obtain semi-finished products; and machining and polishing the semi-finished products to obtain the zirconia ceramic products. The forming method for the zirconia ceramic products, which is disclosed by the invention, is capable of guaranteeing that the obtained ceramic products are high in strength, not liable to break, high in compactness, and uniform in porosity.

Description

technical field [0001] The invention relates to the technical field of zirconia ceramics, in particular to a molding method of zirconia ceramic products. Background technique [0002] As a new type of high-tech ceramics, zirconia ceramics have properties such as high strength, high fracture toughness, high hardness, excellent heat insulation performance and high temperature resistance, and are widely used in the fields of structural ceramics and functional ceramics. In addition, zirconia is non-magnetic, non-conductive, non-rusting, and wear-resistant. It is also widely used in the field of biomedical equipment, props, and tools. Recently, partially stabilized zirconia (TZP) can be used to prepare magnetically shielded watch cases, corrosion-resistant watch parts and other instrument parts by powder metallurgy. In addition to the above applications, TZP is also widely used in decoration, life, medicine, piezoelectric ceramics, sensor ceramics and other fields. [0003] The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28B1/24C04B35/49C04B35/634
CPCB28B1/24C04B35/49C04B35/63488C04B2235/447C04B2235/449C04B2235/483C04B2235/6022C04B2235/616C04B2235/6562C04B2235/6567C04B2235/95
Inventor 利剑肖群顺王高翔陈兰桂孙亮王文利
Owner DONGGUAN XINBO STRUCTURAL CERAMICS CO LTD
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