Reaction spraying preparation method of oxide eutectic ceramic amorphous powder
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A technology of eutectic ceramics and amorphous powder is applied in the field of preparation of oxide amorphous powder, which can solve the problems of high cost, unsuitable for industrial production, low ceramic conversion rate, etc., and achieves improved performance, short preparation period and rapid reaction process. Effect
Active Publication Date: 2014-12-10
HARBIN JEHOT ADVANCED MATERIALS CO LTD
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[0017] The present invention aims to solve the problems of low ceramic conversion rate, high cost and unsuitability for industrialized production in the existing ceramic amorphous preparation method, and the preparation method of ultra-high temperature eutectic ceramic amorphous powder is blank in this field, and provides a Oxide eutectic ceramic amorphous powder reaction spraying preparation method
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specific Embodiment approach 1
[0035] Specific implementation mode 1: The reaction spraying preparation method of an oxide eutectic ceramic amorphous powder in this implementation mode is carried out according to the following steps:
[0036] One, nitrate is placed on dry box and is dried separately, obtains nitrate reactant; Described nitrate reactant is Al(NO 3 ) 3 , Y(NO 3 ) 3 , Zr(NO 3 ) 4 , Mg(NO 3 ) 2 , Nd(NO 3 ) 3 , Gd(NO 3 ) 3 , Eu(NO 3 ) 3 or Ni(NO 3 ) 2 ;
[0037] Two, the metal powder is placed in a vacuum drying oven to dry to obtain a metal powder reactant; the metal powder reactant is Al powder, Ti powder, Fe powder, Mg powder, Y powder, Nd powder, Eu powder, Co powder , Gd powder or Ni powder;
[0038] 3. Put the pressure control metal powder in a vacuum drying oven to dry to obtain a pressure control agent; the pressure control agent is Al powder, Ti powder, Hf powder, V powder, Nb powder, Ta powder, Cr powder, Mo powder or W powder;
[0039] 4. Dry the oxide powder in a va...
specific Embodiment approach 2
[0051] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the drying treatment in step 1 is realized at a temperature of 50-90° C. and a drying time of 6 hours to 24 hours. Other steps and parameters are the same as those in the first embodiment.
specific Embodiment approach 3
[0052] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the drying treatment described in step 2 is realized by drying at a temperature of 70-110° C. for 6 hours to 24 hours. Other steps and parameters are the same as those in Embodiment 1 or 2.
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Abstract
The invention discloses a reaction spraying preparation method of oxide eutectic ceramic amorphous powder, relates to a preparation method of oxide amorphous powder, and aims at solving the problems that a conventional amorphous ceramic preparation method is relatively low in ceramic conversion rate, high in cost and not applicable to industrial production and no preparation method for ultrahigh temperature eutectic ceramic amorphous powder is available in the field. The reaction spraying preparation method comprises the following steps: I, drying nitrate, thereby obtaining a nitrate reaction agent; II, drying metal powder, thereby obtaining a metal powder reaction agent; III, drying pressure control metal powder, thereby obtaining a pressure control agent; IV, drying oxide powder, thereby obtaining a diluent; and V, ball-milling and mixing the above raw materials, filling into a reaction spraying device, igniting the raw materials to initiate the reaction, keeping the temperature for certain time after obtaining melt, opening a nozzle for spraying, curing, drying, and subsequently grinding, thereby obtaining the oxide eutectic ceramic amorphous powder.
Description
technical field [0001] The invention relates to a preparation method of an oxide amorphous powder, in particular to a reaction spraying preparation method of an oxide eutectic ceramic amorphous powder. Background technique [0002] Amorphous materials have good mechanical, physical and mechanical properties that cannot be achieved by crystals due to their special atomic arrangement and random structure. Amorphous materials have wide application potential in many fields. At present, the research on amorphous materials is mainly concentrated in the field of metal amorphous. [0003] The common preparation methods of amorphous materials (amorphous metal + amorphous ceramics) mainly include the following: [0004] 1) Melt quenching technology [0005] The rapid cooling method is the earliest method to prepare amorphous. Its principle is to increase the specific surface area of the alloy sample and try to reduce the interface thermal resistance between the melt and the coolin...
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