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Hot pressed sintering high-purity zirconia composite ceramic and preparation method thereof

A technology of composite ceramics and hot-press sintering, which is applied in the field of hot-press sintered high-purity zirconia composite ceramics and its preparation, and can solve problems such as unsatisfactory requirements

Inactive Publication Date: 2017-07-07
南京金鲤新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] In order to solve the situation that the existing technology cannot meet the requirements in the use of high-strength ceramics for high-end precision equipment, the present invention provides a brand-new hot-pressed sintered high-purity zirconia composite ceramic and its preparation method

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0175] The invention relates to a hot-pressed sintered high-purity zirconia composite ceramic and a preparation method thereof. The specific implementation steps are as follows.

[0176] (1) The molar content of yttrium oxide is 3%, the weight percentage of hafnium oxide is 2%, the weight percentage of aluminum oxide is 5%, the weight percentage of magnesium oxide is 2%, the weight percentage of praseodymium oxide is 0.5%, and the weight percentage of erbium oxide is 0.5% zirconia composite powder, the main element purity of zirconia composite powder is 99.995%, the primary particle size of zirconia composite powder is 24 nanometers, the composite powder and zirconia ball milling balls are put into the ball mill jar for high-energy ball milling 4 hours.

[0177] (2) Put the dispersed powder dispersed in step (1) into a graphite mold with a purity of 99.999%. The powder and graphite are separated by zirconia ceramic paper. After the hot-press furnace, vacuumize to 0.1atm, fill...

Embodiment 2

[0181] The invention relates to a hot-pressed sintered high-purity zirconia composite ceramic and a preparation method thereof. The specific implementation steps are as follows.

[0182] (1) The weight percentage of cerium oxide is 8%, the weight percentage of hafnium oxide is 1%, the weight percentage of silicon oxide is 5%, the weight percentage of calcium oxide is 2%, the weight percentage of neodymium oxide is 0.5%, and the weight percentage of tellurium oxide is 0.5% zirconia composite powder, the main element purity of zirconia composite powder is 99.99%, the primary particle size of zirconia composite powder is 17 nanometers, the composite powder and zirconia ball milling balls are put into the ball mill jar for high-energy ball milling 6 hours.

[0183] (2) Put the dispersed powder dispersed in step (1) into a graphite mold with a purity of 99.999%. The powder and graphite are separated by zirconia ceramic paper. After the hot-press furnace, vacuumize to 0.1atm, fill ...

Embodiment 3

[0187] The invention relates to a hot-pressed sintered high-purity zirconia composite ceramic and a preparation method thereof. The specific implementation steps are as follows.

[0188] (1) The molar content of yttrium oxide is 3%, the weight percentage of hafnium oxide is 1%, the weight percentage of nickel oxide is 4%, the weight percentage of iron oxide is 3%, the weight percentage of terbium oxide is 1%, and the weight percentage of europium oxide is 0.5% zirconia composite powder, the purity of the main elements of the zirconia composite powder is 99.99%, the primary particle size of the zirconia composite powder is 28 nanometers, the composite powder and zirconia ball milling balls are put into the ball mill jar for high-energy ball milling 5 hours.

[0189] (2) Put the dispersed powder dispersed in step (1) into a graphite mold with a purity of 99.999%. The powder and graphite are separated by zirconia ceramic paper. After the hot-press furnace, vacuumize to 0.1atm, f...

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Abstract

The invention provides a zirconia composite tough material with adjustable toughness and low price. The tough ceramic is prepared by complex powder of high-purity zirconia doped with at least one of hafnium oxide, yttrium oxide, cerium oxide, calcium oxide, magnesium oxide, aluminum oxide, titanium oxide, silicon oxide, cobalt oxide, iron oxide, scandium oxide, vanadium oxide, manganese oxide, nickel oxide, copper oxide, zinc oxide, niobium oxide, molybdenum oxide, indium oxide, stannic oxide, barium oxide, tantalum oxide, tungsten oxide, lanthanum oxide, praseodymium oxide, neodymium oxide, tellurium oxide, terbium oxide, europium oxide and erbium oxide. The preparation method comprises the following steps: dispersing the zirconia composite powder by using a high energy ball milling method, and adding the dispersed powder into a graphite mold for performing hot pressed sintering treatment, thereby obtaining the high-purity zirconia composite ceramic.

Description

technical field [0001] The invention belongs to the technical field of material preparation technology, and in particular relates to a hot-pressed sintered high-purity zirconia composite ceramic and a preparation method thereof. Background technique [0002] Ceramic materials not only include structural materials with high temperature resistance, corrosion resistance, wear resistance and high strength, but also many functional materials with high thermal conductivity, good high toughness and excellent optical properties. General civil industrial fields such as chemical industry and chemical industry all have a wide range of applications and development prospects. Precision ceramics is a branch that has developed rapidly in the field of material science in the past two decades. With the development of powder making, forming, sintering technology and equipment, the properties of silicon nitride, silicon carbide, partially stabilized zirconia and other ceramic materials have b...

Claims

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Application Information

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IPC IPC(8): C04B35/488C04B35/645
CPCC04B35/488C04B35/4885C04B35/645C04B2235/3206C04B2235/3208C04B2235/3224C04B2235/3225C04B2235/3229C04B2235/3244C04B2235/34C04B2235/3418C04B2235/5454C04B2235/602C04B2235/656C04B2235/6562C04B2235/6565C04B2235/6567C04B2235/658C04B2235/77C04B2235/784C04B2235/786C04B2235/94C04B2235/96
Inventor 不公告发明人
Owner 南京金鲤新材料有限公司
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