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Preparation method of zirconia ceramic rod for flame spraying

A technology of zirconia ceramics and flame spraying, which is applied in the field of ceramic preparation, can solve the problems of unsatisfactory industrial production, increased processing costs, and low qualified rate of finished products, so as to save drying and sieving, reduce scrap rate, and good mechanics performance effect

Active Publication Date: 2012-11-07
六安皖智知识产权运营有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The obtained oxide ceramic rod has good spraying performance, and the ceramic coating formed after spraying has good mechanical properties, and also has good heat insulation, insulation, corrosion resistance, etc., but this patented process There are the following deficiencies: 1. Agate balls and alcohol media are added during the ball milling, so that the balls are more evenly milled, but at the same time, the original edges and corners of each raw material are ground away, and the cohesion between the materials is reduced. When sintered at high temperature, it is easy to deform, which reduces the pass rate and increases the processing cost;
[0004] 2. When degumming and high-temperature sintering, the hanging sintering method is adopted. This sintering method has strict requirements on the specific gravity of the main raw material. For the main raw material, zirconia ceramic rods with too large specific gravity or aluminum oxide with too light specific gravity / Titanium dioxide ceramic rod material, large specific gravity is easy to fall and break when hanging and firing, and light specific gravity is easy to deform when hanging and firing, resulting in extremely low qualified rate of finished products, very low production efficiency and high scrap rate, which cannot meet the needs of industrial production.

Method used

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  • Preparation method of zirconia ceramic rod for flame spraying
  • Preparation method of zirconia ceramic rod for flame spraying

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Embodiment Construction

[0033] The selected formula is: 89.108% ZrO 2 + 2.42%Al 2 o 3 +3.715%SiO2 2 + 0.027% Fe 2 o 3 +0.8%TiO 2 + 3.93%CaO 2 Weigh the ingredients, put them into the ball mill tank and carry out dry mixing for 4 hours directly. After the mixed powder is discharged, it is directly added to the high-temperature box-type electric furnace, and it is sintered at 1600°C for 23 hours at a high temperature, and then it is crushed out of the furnace and passed through 280°C. mesh vibrating sieve; mix 75 parts of deionized water with 5 parts of allyloxy hydroxypropyl sodium sulfonate and 6.5 parts of polyethylene glycol 200, stir at high speed until the emulsification is sufficient, then heat up in a water bath until the temperature rises to 75 °C , add 18 parts of styrene, 8 parts of hydroxyethyl methacrylate and 0.4 parts of sodium persulfate completely dissolved in 5 parts of acrylic acid and 25 parts of deionized water, then raise the temperature to 88°C, keep it warm for about o...

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Abstract

The invention discloses a preparation method of a zirconia ceramic rod for flame spraying. The method comprises the steps of: first, weighing and proportioning a ceramic raw material; grinding and drying the raw material to obtain a mixed powder; then adding a modified styrene-acrylic emulsion into the mixed powder; conducting mixing and pugging; placing plastic clay into a vacuum extruder, and extruding for molding; using a horizontal burning method; heating for a degumming treatment; and finally sintering at a certain temperature to obtain the zirconia ceramic rod provided by the invention.The invention has the advantages of simple process, high rate of qualified products, greatly reduced production cost and improved efficiency, and is suitable for industrialized production; the produced ceramic rod has good spraying performance; and a ceramic coating formed after spraying has good mechanical properties, good thermal insulation, insulation and corrosion resistance, etc. The zirconia ceramic rod has good application prospects in the fields of tank, armored vehicle and aerospace.

Description

technical field [0001] The invention relates to the field of ceramic preparation, in particular to a zirconia ceramic rod for flame spraying and a preparation method thereof. Background technique [0002] With the development of science and technology, ceramic printing technology has gradually been widely used. At present, the relatively mature ceramic spraying technology mainly includes plasma spraying and flame spraying technology. Among them, the application of the plasma spraying method in the industry is limited due to reasons such as complex process equipment, high price, inconvenient maintenance, and troublesome operation. Flame spraying technology has simple equipment, strong versatility, and simple process methods, so it has been widely used. According to the different spraying raw materials used, flame spraying technology is divided into powder flame spraying and ceramic rod flame spraying. For powder flame spraying, since the ceramic powder particles are heated...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/622C04B35/634C04B35/48C08F212/08C08F220/28C08F220/06
Inventor 许太昌
Owner 六安皖智知识产权运营有限公司
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