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Ceramic ball and manufacture method thereof

A technology of ceramic balls and ball mills, applied in the field of ceramic materials, can solve the problems of toughness, poor strength, low mechanical properties of silicon nitride ceramics, etc.

Pending Publication Date: 2017-09-22
FUJIAN HUAQING ELECTRONICS MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a kind of ceramic ball and its preparation method, the technical problem to be solved is: silicon nitride ceramics has defects such as low mechanical properties; and toughness, strength are relatively poor

Method used

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  • Ceramic ball and manufacture method thereof

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Effect test

Embodiment 1

[0025] A ceramic ball, in parts by weight, the raw material is composed of 74 parts of silicon nitride powder, 2 parts of aluminum oxide powder, 7 parts of aluminum dihydrogen phosphate powder, 1 part of rare earth and 6 parts of nickel slag; wherein The nickel slag is composed of SiO 2 5 parts, MgO 1 part, Fe 2 o 3 0.5 parts, the balance being the oxides of Na, Ca, Cr and Ni; the powder diameter of the silicon nitride powder is 0.5 μm, the powder diameter of the aluminum oxide powder is 0.6 μm, and the powder diameter of the aluminum dihydrogen phosphate powder is 0.4 μm. μm.

[0026] Adding rare earth in this embodiment can effectively optimize the microstructure, thereby significantly improving the toughness and strength of silicon nitride ceramics; adding nickel slag can reduce production costs, comprehensively utilize nickel slag, and the prepared silicon nitride ceramics have mechanical properties High performance.

[0027] refer to figure 1 , a preparation method ...

Embodiment 2

[0033] A ceramic ball, in parts by weight, the raw material is composed of 65 parts of silicon nitride powder, 5 parts of aluminum oxide powder, 12 parts of aluminum dihydrogen phosphate powder, 2 parts of rare earth and 8 parts of nickel slag; The nickel slag is composed of SiO 2 3 parts, MgO 2 parts, Fe 2 o 3 1 part, the balance is the oxide of Na, Ca, Cr and Ni; The powder diameter of described silicon nitride powder is 1.5 μ m, the powder diameter of aluminum oxide powder is 1.2 μ m, the powder diameter of aluminum dihydrogen phosphate powder is 0.7 μm.

[0034] Adding rare earth in this embodiment can effectively optimize the microstructure, thereby significantly improving the toughness and strength of silicon nitride ceramics; adding nickel slag can reduce production costs, comprehensively utilize nickel slag, and the prepared silicon nitride ceramics have mechanical properties High performance.

[0035] Its preparation method comprises the following steps:

[003...

Embodiment 3

[0041] A ceramic ball, in parts by weight, the raw material is composed of 70 parts of silicon nitride powder, 3 parts of aluminum oxide powder, 10 parts of aluminum dihydrogen phosphate powder, 1.5 parts of rare earth and 7 parts of nickel slag; The nickel slag is composed of SiO 2 4 parts, MgO 1.5 parts, Fe 2 o 30.8 parts, the balance being the oxides of Na, Ca, Cr and Ni; the powder diameter of the silicon nitride powder is 1 μm, the powder diameter of the aluminum oxide powder is 0.8 μm, and the powder diameter of the aluminum dihydrogen phosphate powder is 0.5 μm .

[0042] Adding rare earth in this embodiment can effectively optimize the microstructure, thereby significantly improving the toughness and strength of silicon nitride ceramics; adding nickel slag can reduce production costs, comprehensively utilize nickel slag, and the prepared silicon nitride ceramics have mechanical properties High performance.

[0043] Its preparation method comprises the following st...

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Abstract

The invention relates to a ceramic ball and a manufacture method thereof. The ceramic ball comprises the following raw materials, by weight part, 65-74 parts of silicon nitride powder, 2-5 parts of alumina powder, 7-12 parts of aluminium dihydrogen phosphate powder, 1-2 parts of rare earth and 6-8 parts of nickel residue. Rare earth in the ceramic ball can effectively optimize the microstructure, so that the toughness and strength of silicon nitride ceramics are obviously improved. Through addition of the nickel residue, the manufacture cost is reduced. The nickel residue undergoes comprehensive utilization, so that the manufactured silicon nitride ceramics has excellent performance, such as mechanical properties.

Description

technical field [0001] The invention relates to the technical field of ceramic materials, and relates to a ceramic ball and a preparation method thereof. Background technique [0002] Porous aluminum phosphate (AlPO 4 )—Silicon Nitride (Si 3 N 4 ) Ceramic balls are widely used in industrial production, and can be used as catalyst carriers, chemical fillers, heat preservation and refractory materials, etc. When used as a photocatalyst carrier and other liquid-phase reaction catalyst carrier, as well as an adsorbent for toxic substances in water, in order to ensure high catalytic effect and (or) adsorption efficiency, porous ceramic balls are often required to be in a suspended state in water, which is There is a need to prepare a lightweight porous ceramic ball. In the prior art, "A Preparation Method for Lightweight Porous Aluminum Phosphate-Silicon Nitride Ceramic Balls" with application number 201610283606.X, the content includes silicon nitride powder, alumina powder,...

Claims

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Application Information

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IPC IPC(8): C04B38/00C04B35/584C04B35/626C04B35/645
CPCC04B35/584C04B35/6261C04B35/62695C04B35/645C04B38/0022C04B38/009C04B2235/3201C04B2235/3206C04B2235/3208C04B2235/3217C04B2235/3241C04B2235/3272C04B2235/3279C04B2235/3418C04B2235/40C04B2235/447C04B2235/6562C04B2235/6567C04B2235/658
Inventor 杨大胜施纯锡
Owner FUJIAN HUAQING ELECTRONICS MATERIAL TECH
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