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A method for surface grinding of boride ceramic material

A ceramic material and boride technology, applied in the field of surface grinding of boride ceramic materials, can solve problems such as low grinding efficiency, achieve the effects of low grinding efficiency, improve grindability, and reduce material surface roughness

Active Publication Date: 2016-08-17
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of low grinding efficiency in the traditional grinding method of boride ceramic materials, and provide a method for surface grinding of boride ceramic materials

Method used

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  • A method for surface grinding of boride ceramic material

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specific Embodiment approach 1

[0012] Specific implementation mode one: this implementation mode is a method for surface grinding of boride ceramic materials, which is specifically completed according to the following steps:

[0013] 1. Ultrasonic cleaning: use absolute ethanol as a cleaning agent to ultrasonically clean boride ceramic materials for 5 minutes to 60 minutes to obtain boride ceramic materials after cleaning;

[0014] 2. Surface heating and oxidation: place the cleaned boride ceramic material in a muffle furnace, heat it from room temperature to 400-1500°C, heat and keep it at 400-1500°C for 1min-120min, and cool to room temperature to obtain surface oxidation post-boride ceramic materials;

[0015] 3. Grinding: The surface oxidized boride ceramic material is placed on a polishing machine, the abrasive is diamond particles or boron carbide particles, the grinding medium is water, and the polishing machine disc rotates at a speed of 100 rpm to 1000 rpm. Grinding treatment, that is, to achieve ...

specific Embodiment approach 2

[0018] Embodiment 2: The difference between this embodiment and Embodiment 1 is that in Step 1, the boride ceramic material is ultrasonically cleaned with absolute ethanol as a cleaning agent for 20 minutes to 40 minutes to obtain the cleaned boride ceramic material. Others are the same as the first embodiment.

specific Embodiment approach 3

[0019] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the volume ratio of the cleaning agent in step 1 to the boride ceramic material is (4-10):1. Others are the same as those in Embodiment 1 or 2.

[0020] In this embodiment, the purpose of determining the volume ratio of the cleaning agent to the boride ceramic material is to ensure that the boride ceramic material is cleaned.

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Abstract

The invention provides a method for grinding surfaces of boride ceramic materials, and relates to a method for grinding the boride ceramic materials. The method aims to solve the problem that a traditional method for grinding the boride ceramic materials is low in grinding efficiency. The method includes the steps that (1) ultrasonic cleaning is conducted, and the cleaned boride ceramic materials are obtained; (2) surface heating and oxidization are conducted, and the boride ceramic materials obtained after surface oxidization is conducted are obtained; (3) grinding treatment is conducted on the boride ceramic materials obtained after surface oxidization is conducted through a polishing machine, and surface grinding of the boride ceramic materials is achieved. The method has the advantages that the grinding processing efficiency is improved by 50% to 300%, and the grinding material consumption is reduced by 20% to 60%. The method is mainly applied to surface grinding of the boride ceramic materials.

Description

technical field [0001] The invention relates to a grinding method for boride ceramic materials. Background technique [0002] With the continuous improvement of the performance of aircraft, the key thermal parts of the aircraft must be able to serve in extreme aerodynamic thermal environments and at the same time meet the strict requirements of the aircraft for the structural integrity of the thermal protection system, which poses a severe challenge to thermal protection materials. Ultra-high temperature ceramic materials are regarded as a very promising non-ablative structural material, and ZrB 2 , HfB 2 The representative boride ceramic material is the main research direction of ultra-high temperature ceramic materials. Boride ceramic materials have extremely high melting point, high high temperature strength, excellent oxidation resistance and ablation resistance and chemical corrosion resistance. Due to its outstanding comprehensive performance, boride ceramic materia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24B1/00
CPCB24B1/00
Inventor 张幸红李宁韩文波胡平高家兴安玉民桂凯旋
Owner HARBIN INST OF TECH
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