CN1052842A - The production method of ceramic articles based on zirconium oxide - Google Patents
The production method of ceramic articles based on zirconium oxide Download PDFInfo
- Publication number
- CN1052842A CN1052842A CN 89109696 CN89109696A CN1052842A CN 1052842 A CN1052842 A CN 1052842A CN 89109696 CN89109696 CN 89109696 CN 89109696 A CN89109696 A CN 89109696A CN 1052842 A CN1052842 A CN 1052842A
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- CN
- China
- Prior art keywords
- micro mist
- zirconium white
- production method
- white micro
- stablizer
- Prior art date
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Abstract
The invention relates to the production method that adopts the zirconium white micro mist to prepare the high-performance zirconia goods.Particularly produce the production method of high-heat resistance shock resistant zircite product with magnesia partial stabilized zirconium white micro mist.With the micro mist is raw material can make high-density (void content＜0.5%) high-heat resistance shock resistant under lower sintering temperature (1400-1700 ℃) zircite product, the technology of mechanical workout can realize pottery processing at an easy rate behind the employing base substrate low temperature presintering, to prepare the ceramic articles based on zirconium oxide of complexity of high dimensional accuracy and shape.
Description
What the present invention relates to is to be the method for raw material production ceramic articles based on zirconium oxide with the zirconium white micro mist, particularly has the production method of the zirconia ceramic product of high strength, high-heat resistance shock resistant, high dimensional accuracy with magnesia partial stabilized zirconium white micro mist production.
For obtaining to have the zirconia ceramic product of higher-strength and better heat-shock resistance, always adopted the zirconium white powder through high-temperature stableization is raw material in the past, burn till at high temperature more than 1800 ℃ after the moulding, 1400 ℃ of left and right sides thermal treatments then are at last to burning till product cold working.The shortcoming of this technology is that the microstructure of the performance of goods and material is difficult for accomplishing to control accurately, processing difficulties, processing scrap rate height, be difficult for producing complex-shaped goods, simultaneously the firing temperature height, need special high-temperature sintering equipment, give to produce by batch and bring some inconvenience.
The objective of the invention is: with chemical method synthetic zirconium white micro mist is raw material, adopts mechanical pressing, middle temperature to give and burns back mechanical workout, the prepared high-performance of burning till at a lower temperature at last and the zirconia ceramic product of high dimensional accuracy.Present method is specially adapted to produce with magnesia partial stabilized high-heat resistance shock resistant and complex-shaped, the zirconia ceramic product that dimension precision requirement is high.
Particular content of the present invention is: is raw material to contain zirconium white with the salt that contains corresponding steady oxide (as yttrium oxide, magnesium oxide, strontium oxide etc.), adopts the technology of co-precipitation to make precipitation of hydroxide.This throw out through dewater levigate after, light-burned decomposition makes the zirconium white micro mist.The zirconium white micro mist adds 4～8wt% organic bond after granulation, be that medium mixed 4～8 hours with nylon ball or alumina balls in the plastics pot, then in 800～1200 kilograms per centimeter
2Mechanical pressing under the pressure, molding blank gave burning in 0.5～3 hour 600～1000 ℃ of insulations, be machined into the shape and size (carry out size and put chi) of requirement, under 1400～1700 ℃ of high temperature, be incubated 4～6 hours at last and burn till the zirconia ceramic product that makes high-performance and high dimensional accuracy by burning till to shrink.Its flow process is as follows:
It is raw material that present method adopts the zirconium white micro mist, material purity height, active big, can be under lower sintering temperature (1400～1700 ℃) obtain the zircite product of dense sintering.Zirconia ceramics with present method preparation has microlitic structure, its performance is better than high temperature (1800 ℃) agglomerating zirconia ceramics and magnesia partial stabilized zirconia ceramics, and have excellent especially heat-shock resistance, be suitable for using in the high temperature field that big thermal shocking is arranged.Elder generation processed the feasible ceramic very easy realization that becomes of processing of the technology of afterwards burning till after burning was given in present method employing, can not only obtain high dimensional precision, also can more easily prepare the zirconia ceramic product of complicated shape.
Embodiment: adopting the method for co-precipitation to make MgO content is 2-4%(weight) magnesia partial stabilized zirconium white micro mist, after granulation, add 4-8%(weight) organic bond, in the plastics pot with Al
2O
3Ball is medium mixing 4-8 hour, in common hydropress compacted under, forming pressure 800-1200 kilograms per centimeter
2, (more preferably greater than 1000 kilograms per centimeter
2), burning was given in 600-1000 ℃ (best＜900 ℃) insulation in 0.5～3 hour in conventional, electric-resistance stove (as silicon carbide rod furnace), shape and size precision processing on demand then, 4-6 hour sintering of 1400～1700 ℃ of insulations in resistance furnace (silicon carbide rod furnace or molybdenum disilicide stove) at last.Resulting product apparent porosity＜0.5%, volume density＞5.6g/cm
3, thermal shock number is greater than 3 times (1300 ℃ of insulations 15 minutes, under the cold water quenching condition, flawless occurs).This method can be produced difficult distortion high alloy wire rod horizontal casting zirconium white composite nozzle.
Claims (3)
1, a kind of production method of ceramic articles based on zirconium oxide is characterized in that: adopt the method for chemical coprecipitation to prepare the zirconium white micro mist that contains stablizer, and mechanical pressing, low temperature gives burning, mechanical workout, high temperature burns till zirconia ceramic product.
2, method according to claim 1 is characterized in that: with the aqueous solution that contains zirconates, ZrOCl
28H
2O or Zr(NO
3)
45H
2O and as the aqueous solution MgCl of the oxide salt of stablizer
26H
2O or YCl
3, CeCl
4Mix, with closing in the ammoniacal liquor, generate precipitation of hydroxide, dehydration is decomposed, and preparation contains the zirconium white micro mist of stablizer.
3, method according to claim 1 is characterized in that: the zirconium white micro mist that contains stablizer is at 800～1200kgf/cm
2Under the pressure, mechanical pressing, 600～1000 ℃ are given burning, carry out precision work with mechanical means, finally burn till under 1400～1700 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89109696 CN1052842A (en) | 1989-12-27 | 1989-12-27 | The production method of ceramic articles based on zirconium oxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89109696 CN1052842A (en) | 1989-12-27 | 1989-12-27 | The production method of ceramic articles based on zirconium oxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1052842A true CN1052842A (en) | 1991-07-10 |
Family
ID=4858132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89109696 Pending CN1052842A (en) | 1989-12-27 | 1989-12-27 | The production method of ceramic articles based on zirconium oxide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1052842A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1059415C (en) * | 1995-04-05 | 2000-12-13 | 中国科学院兰州化学物理研究所 | Sintering method of tetragonal zircite ceramic |
| CN100436372C (en) * | 2003-02-28 | 2008-11-26 | 住友化学工业株式会社 | Zirconium oxide ayglutinating body and producing method thereof |
| CN101269958B (en) * | 2008-05-08 | 2010-09-01 | 广东东方锆业科技股份有限公司 | Cerium stabilizing zirconium oxide structure ceramic material and preparation method thereof |
| CN101928142A (en) * | 2010-08-24 | 2010-12-29 | 中钢集团洛阳耐火材料研究院有限公司 | High-purity heavy zirconia refractory product and preparation method |
| CN106431392A (en) * | 2016-08-26 | 2017-02-22 | 东莞华晶粉末冶金有限公司 | Mobile terminal shell and preparation method thereof, and mobile terminal |
-
1989
- 1989-12-27 CN CN 89109696 patent/CN1052842A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1059415C (en) * | 1995-04-05 | 2000-12-13 | 中国科学院兰州化学物理研究所 | Sintering method of tetragonal zircite ceramic |
| CN100436372C (en) * | 2003-02-28 | 2008-11-26 | 住友化学工业株式会社 | Zirconium oxide ayglutinating body and producing method thereof |
| CN101269958B (en) * | 2008-05-08 | 2010-09-01 | 广东东方锆业科技股份有限公司 | Cerium stabilizing zirconium oxide structure ceramic material and preparation method thereof |
| CN101928142A (en) * | 2010-08-24 | 2010-12-29 | 中钢集团洛阳耐火材料研究院有限公司 | High-purity heavy zirconia refractory product and preparation method |
| CN101928142B (en) * | 2010-08-24 | 2013-03-06 | 中钢集团洛阳耐火材料研究院有限公司 | High-purity heavy zirconia refractory product and preparation method |
| CN106431392A (en) * | 2016-08-26 | 2017-02-22 | 东莞华晶粉末冶金有限公司 | Mobile terminal shell and preparation method thereof, and mobile terminal |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |