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High-performance ceramic knife and preparation method thereof

A ceramic knife, high-performance technology, applied in the field of ceramic knives, can solve the problems of not having high hardness, brittleness, insufficient toughness, etc., and achieve the effect of high sharpness and durable sharpness, high strength and toughness, and improved toughness

Active Publication Date: 2013-09-18
ZHUHAI LUCKYMAN TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current ceramic knives are often contradictory in terms of hardness and toughness, that is, ceramic knives with high hardness are often not tough enough and are easily broken; ceramic knives with high toughness do not have high hardness.
In addition, the existing ceramic knives are not sharp enough after being sharpened, which is very inconvenient to use, or they become blunt after a few times of use and cannot be used anymore

Method used

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  • High-performance ceramic knife and preparation method thereof

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Embodiment Construction

[0018] In the present embodiment, the raw materials used in the ceramic knife of the present invention are calculated by weight percentage, and it consists of the following components:

[0019] ZrO 2 and HfO 2 The mixture of 93~94wt%; Y 2 o 3 5~6wt%; Al 2 o 3 0.2~1wt%. Specifically, the first scheme is: ZrO 2 and HfO 2 The mixture of 93wt%; Y 2 o 3 6wt%; Al 2 o 3 1wt%. The second option is: ZrO 2 and HfO 2 The mixture of 94wt%; Y 2 o 3 5.5wt%; Al 2 o 3 0.5wt%. The third option is: ZrO 2 and HfO 2 The mixture of 93.5wt%; Y 2 o 3 5.5wt%; Al 2 o 3 1wt%. Of course, there are other specific solutions, such as: ZrO 2 and HfO 2 The mixture of 93.8wt%; Y 2 o 3 5.8wt%; Al 2 o 3 0.4wt%. In short, any ZrO 2 and HfO 2 The content of the mixture is in the range of 93 ~ 94wt%, Y 2 o 3 The content of Al is in the range of 5-6wt%, Al 2 o 3 The content is in the range of 0.2 to 1wt%, all falling within the protection scope of the pres...

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Abstract

The invention aims to provide a high-performance ceramic knife which has high strength and high toughness and has high sharpness after putting the first edge on the knife as well as a method for preparing the ceramic knife. The high-performance ceramic knife comprises the following components in percentage by weight: 93-94 percent of mixture of ZrO2 and HfO2, 5-6 percent of Y2O3 and 0.2-1 percent of Al2O3. The method for preparing the ceramic knife comprises the following steps: (1) preparing a cutter blank; (2) sintering at the first stage; (3) sintering at the second stage; and (4) sintering and forming. According to the ceramic knife prepared by utilizing the method, the bending strength is improved from the original 900MPa to the 1100MPa, toughness is obviously improved, the initial sharpness of the ceramic knife is improved from the original 80mm to 95mm, and the durable sharpness is improved from 1100mm to 1500mm. The method can be applied to the field of manufacturing of ceramic knives.

Description

technical field [0001] The invention relates to a ceramic knife, in particular to a high-performance ceramic knife and a preparation method of the ceramic knife. Background technique [0002] Most of the ceramic knives currently on the market are processed with a nano-material "zirconia". Zirconia powder is used to press 300 tons of heavy pressure with a mold at a high temperature of 2000 ℃ to make a knife blank, and then it is polished with diamond and equipped with a handle to make a finished ceramic knife. However, the current ceramic knives are often contradictory in terms of hardness and toughness, that is, ceramic knives with high hardness often have insufficient toughness and are easily broken; ceramic knives with high toughness do not have high hardness. In addition, the existing ceramic knives are not sharp enough after sharpening, which is very inconvenient to use, or become blunt after several times of use, making them unusable. In view of this, the industry urg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/48C04B35/622
Inventor 吴崇隽向军王洋
Owner ZHUHAI LUCKYMAN TECH CO LTD
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