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Method for preparing mixture of alumina based amorphous and solid solution ceramic micron powder by high temperature melt quenching method

An alumina-based, high-temperature melt technology, which is applied in the field of preparing alumina-based amorphous and solid solution ceramic micropowder mixtures by high-temperature melt quenching method, can solve the problems of high cost, low ceramic conversion rate, and long time, and achieve improvement performance effect

Pending Publication Date: 2018-11-16
HARBIN INST OF TECH
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  • Claims
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Problems solved by technology

[0019] The purpose of the present invention is to solve the problems of low ceramic conversion rate, long time, low output and high cost in the current preparation method of ceramic amorphous, which are not suitable for industrial production, and provide a high-temperature melt quenching method to prepare oxide Method for Aluminum-Based Amorphous and Solid Solution Ceramic Micropowder Mixture

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  • Method for preparing mixture of alumina based amorphous and solid solution ceramic micron powder by high temperature melt quenching method
  • Method for preparing mixture of alumina based amorphous and solid solution ceramic micron powder by high temperature melt quenching method
  • Method for preparing mixture of alumina based amorphous and solid solution ceramic micron powder by high temperature melt quenching method

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specific Embodiment approach 1

[0040] Specific embodiment one: In this embodiment, a method for preparing alumina-based amorphous and solid solution ceramic micropowder mixture by high-temperature melt quenching method is carried out according to the following steps:

[0041] 1. Dry Al 2 o 3 and diluent powder, respectively, to obtain dry Al 2 o 3 and diluent powder;

[0042] Second, the dried Al 2 o 3 The powder and diluent powder are mixed evenly to obtain a uniform Al 2 o 3 base powder;

[0043] Third, the uniform Al 2 o 3 The base powder is put into the crucible, the bottom of the crucible communicates with the current-limiting guide tube, the crucible is located in the heating equipment, and the uniform Al 2 o 3 The base powder is heated to melt, and the molten state is maintained for 10-60 minutes to obtain Al 2 o 3 base melt;

[0044] 4. Introduce protective gas to make the pressure in the crucible reach 0.2MPa ~ 5MPa, open the nozzle, Al 2 o 3 The base melt is ejected from the nozzle...

specific Embodiment approach 2

[0056] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the diluent is barium oxide, iron oxide, vanadium oxide, molybdenum oxide, aluminum oxide, zirconium oxide, magnesium oxide, calcium oxide, strontium oxide, scandium oxide, Titanium oxide, chromium oxide, cobalt oxide, nickel oxide, yttrium oxide, niobium oxide, hafnium oxide, tantalum oxide, lanthanum oxide, cerium oxide, praseodymium oxide, neodymium oxide, samarium oxide, europium oxide, gadolinium oxide, terbium oxide, dysprosium oxide , holmium oxide, erbium oxide, thulium oxide, ytterbium oxide, lutetium oxide and silicon oxide or a combination of several. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0057] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: when the diluent contains zirconia, Y 2 o 3 0-20mol% of the molar content of zirconia in the diluent, CeO 2 0~30mol% of the molar content of zirconia in the diluent, MgO is 0~28mol% of the molar content of zirconia in the diluent, CaO is 0~33.45mol% of the molar content of zirconia in the diluent, TiO 2 0-44.41mol% of the molar content of zirconia in the diluent, Sc 2 o 3 It is 0-20 mol% of the molar content of zirconia in the diluent. Others are the same as in the first or second embodiment.

[0058] This embodiment uses Al 2 o 3 / ZrO 2 The high-temperature melting of the base powder combined with the quenching method of rotating iron, copper, and steel discs (or roll equipment) designed a new Al 2 o 3 / ZrO 2 Process for the preparation of amorphous and solid solution powder mixtures. Using micron and nanoscale Al 2 o 3 powder and submicron ZrO 2 Powde...

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Abstract

The invention relates to a method for preparing a mixture of alumina based amorphous and solid solution ceramic micron powder by a high-temperature melt quenching method. The method solves the problems of low conversion rate of ceramic, long time, low output, high cost of ceramic amorphous object and non industrial production in the prior art can be solved; Al2O3 powder and diluent powder are uniformly mixed, the Al2O3 composite powder are fusion by high-temperature heating equipment, after insulation for a while, a quenching apparatus is used for cooling Al2O3 melt, and the Al2O3 melt is crushed to the mixture of alumina based amorphous and solid solution ceramic micron powder. The method has the advantages of simple process and large output, which belongs to the field of ceramic micron powder preparation.

Description

technical field [0001] The invention relates to a method for preparing alumina-based amorphous and solid solution ceramic micropowder mixture by a high-temperature melt quenching method. Background technique [0002] With the rapid development of nanotechnology, materials scholars began to try to combine nano-ZrO 2 Added to micron or submicron alumina powder to prepare ZTA nanocomposite ceramics, further improving the bending strength and fracture toughness of the medium material. However, nano-powder has extremely high activity, is difficult to disperse, and is easy to agglomerate. In order to obtain well-dispersed and uniformly mixed nano-powders, liquid-phase preparation processes, such as co-precipitation, sol-gel, and hydrothermal methods, are generally used to prepare nano-composite powders, and ZrO 2 、Al 2 o 3 In-situ mixing of nanopowders, stabilizers, etc. For the co-precipitation method, the initial particle size of the nano-powder prepared is small and the pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/626C04B35/48C04B35/10
CPCC04B35/10C04B35/48C04B35/62605C04B35/62665C04B2235/96
Inventor 郑永挺于永东郁万军栢跃磊赫晓东
Owner HARBIN INST OF TECH
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