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A porous ZTA ceramic preform coated with cu-ti alloy micropowder and its preparation and application

A preform and coating technology, applied in the field of material processing, can solve the problems of reducing the effect of ceramic surface activation treatment, small preform size, and cumbersome sintering process, so as to reduce the high-temperature vacuum sintering process, improve the wetting ability, and improve the preparation efficiency. Effect

Active Publication Date: 2021-07-23
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the preparation process of this process, the sintering process is more cumbersome, the preparation cycle is longer, and the process control of the powder is easily oxidized, thereby reducing the effect of activation treatment on the ceramic surface. In addition, the molding of the preform is also limited by the space of the sintering furnace, resulting in The prepared preform is small in size and simple in structure

Method used

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  • A porous ZTA ceramic preform coated with cu-ti alloy micropowder and its preparation and application
  • A porous ZTA ceramic preform coated with cu-ti alloy micropowder and its preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] 1) 99.99% pureness, the particle size of 200 mesh is 99.99%, the particle size is 200 mesh, and mixed powder is performed by weight than Cu: Ti = 65: 35, and then mixed with mixed powder into the ball mill, the ball mill is : The ball diameter is 5 mm, the ball is 10: 1, the rotational speed is 300r / min, the ball milling time is 36h.

[0047] In order to prevent the surface area of ​​the mixed powder after ball milling, it is easy to react with oxygen in the air, and during the entire alloying process, the mixed powder is carried out in an inert gas;

[0048] 2) Select 2.4g Cu-Ti alloy micro powder, ZTA ceramic particles (Zro 2 Accounted for 20 wt.%, Al 2 O 3 80 wt.%) 30g, the amount of water glass is about 0.12 g, 10 to 12 mesh wax particles as a pore agent, and the above item is mixed, and the glass rod is uniformly stirred, and when the Cu-Ti alloy micro powder is uniformly The surface is covered with the surface of the ZTA particles, and the entire process is complete...

Embodiment 2

[0055] 1) Tissue of 99.99% pure, the particle size of 200 mesh is 99.99%, the particle size is 200 megadownload megadownload megadownload megadownload megadownload megadownload. , The speed is 300r / min, the ball milling time is 36h.

[0056] In order to prevent the mixed powder of the ball mill, it is easily reacted with oxygen in the air, usually in an inert gas in an inert gas in the loading of oxygen in the air.

[0057] 2) Select 2.4GCU-Ti alloy micro powder, ZTA ceramic particles (Zro 2 Accounted for 20 wt.%, Al 2 O 3 80 wt.%) 30 g, the amount of water glass is about 0.12 g, 10 to 12 mesh wax particles to add 0.65 g as a pore agent, mix the above item, and mix through the glass rod, mix, about 5 min, when Cu-Ti alloy Microlic powder is evenly covered with the surface of the ZTA particles, and the entire process is completed in the glove box of the protective atmosphere, and then the mix is ​​placed in the mold of the φ10 mm cylinder.

[0058] 3) put the prefabricated body i...

Embodiment 3

[0063] 1) 99.99% pureness, the particle size of 200 mesh, the purity of 99.99%, granularity 200 megadownload megadownload megadownload megadownload megadownload megadownload megadownload megadownload megadownload megadownload megadownload megadownload megadownload megadownload megadownload megadownload megadownload megadownload megadownload megadownload megadownload megadownload megadownload The particle diameter is 5 mm, the ball is 10: 1, the speed of 300r / min, the ball milling time is 36h.

[0064] In order to prevent the surface area of ​​the mixed powder after ball milling, it is easy to react with oxygen in the air, and during the entire alloying process, the mixed powder is carried out in an inert gas;

[0065] 2) Select 2.4g Cu-Ti alloy micro powder, ZTA ceramic particles (Zro 2 Accounted for 20 wt.%, Al 2 O 3 80 wt.%) 30g, the amount of water glass is about 0.12 g, 10 to 12 mesh wax particles as a pore agent, and the above item is mixed, and the glass rod is uniformly s...

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Abstract

The invention belongs to the field of material processing, and discloses a porous ZTA ceramic prefabricated body coated with Cu-Ti alloy micropowder, a preparation method and application thereof. In this method, the Cu-Ti mixed powder is alloyed, and then mixed with ZTA particles, through the addition of water glass and pore-forming agent, in CO 2 Rapid solidification in an atmosphere, the crush strength of the preform can reach 2MPa, which can effectively resist the punching effect of the molten metal, and the Cu-Ti powder can use the high temperature obtained during the contact process with the molten metal to activate the surface of the ZTA ceramic Treatment improves the reaction characteristics between the ceramic surface and molten metal, and greatly improves the metallurgical bonding efficiency between molten metal and ceramics, so it can be well applied in the preparation of steel-based composite materials.

Description

Technical field [0001] The present invention belongs to the field of material processing, and in particular, the present invention relates to a multi-Porous ZTA ceramic prefabricate and preparation methods and applications thereof in Cu-Ti alloy microofakes. Background technique [0002] Particle enhanced steel-based composites are the field of wear-resistant materials, and the ceramic particles are dispersed in steel materials. The strength of the material is improved, and the wear resistance is remarkably improved. During the service, ceramic particles are mainly abrasion resistant, The steel matrix material plays a protective effect and hinders the substrate further wear. The formability, surface activation effect, and rapid molding efficiency of ceramic particles during the preparation of metal matrix composites are critical. [0003] Zirconia Toughened Alumina Ceramics (ZTA) has excellent mechanical properties, which are widely complicated with metal materials such as high m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/06C04B38/00C04B35/10C04B35/622B22D19/00C04B35/63
CPCB22D19/0081C04B35/10C04B35/622C04B35/6303C04B38/0006C04B38/0645C04B2235/3244C04B2235/404C04B2235/407
Inventor 涂小慧李卫郑宝超徐方伟林怀俊张鹏
Owner JINAN UNIVERSITY
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