CN104987048A - Ceramic material for nanometer aluminum oxide mold and preparation method of ceramic material - Google Patents
Ceramic material for nanometer aluminum oxide mold and preparation method of ceramic material Download PDFInfo
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Abstract
The invention discloses a ceramic material for a nanometer aluminum oxide mold and a preparation method of the ceramic material. The ceramic material comprises nanometer zirconium carbide, nanometer lanthanum hexaboride, cobalt carbide, boron nitride, magnesium oxide, manganese silicide, tungsten carbide, molybdenum trioxide, magnesium silicide and the balance of aluminum oxide. The preparation method comprises the following steps of step I: taking powder of the materials and adding the powder into a stirrer for stirring; step II: performing ball milling in a ball mill; step III: performing heating and compression molding on the ceramic material subjected to the ball milling in the step II in a graphite mold, and performing hot-pressure sintering at the sintering temperature of 1,250 to 1,400DEG C and the sintering pressure of 40 to 60MPa for 1.5 to 3.5 hours to obtain the ceramic material for the nanometer aluminum oxide mold. The prepared ceramic material has excellent fracture toughness, hardness and bending resistance, and can be applied to mold materials.
Description
Technical field
The invention belongs to cermet material field, relate to a kind of cermet material and preparation method thereof, particularly relate to a kind of nano oxidized aluminum die stupalith and preparation method thereof.
Background technology
Mould is indispensable important equipment in the manufacture of signal equipment, industrial devices, automobile component, but the Working environment of mould, as huge pinch shock, flowing friction etc. all can cause, die temperature raises, so usually there is the phenomenons such as mould sticking to mould, seam or oxidation, these all exacerbate die wear and reduce die life.But the comparatively high temps that hot extrusion process produces can make moulding stock soften usually to decline with wear resistance, work-ing life reduces and the surface quality of product is poor.Therefore, an important channel of improving die life is exactly the moulding stock selecting high-wearing feature and high rigidity.
Cermet material not only has high strength and high rigidity, the advantage such as high temperature resistant and wear-resistant, and has anti-oxidant and chemical stability preferably.Extraordinary application prospect in a mold, alumina-ceramic is modal a kind of cermet material, by promoting the performance of alumina ceramic material, improving fracture toughness property, hardness, the bending strength of alumina ceramic material, the application of alumina-ceramic at mould can be expanded.
Summary of the invention
The technical problem solved: the cermet material used for mould needs to possess excellent performance, as bending strength, hardness, fracture toughness property etc., the object of this invention is to provide a kind of mould nano aluminium oxide cermet material with good fracture toughness property, hardness and bending strength, improve the physical strength of mould, improve the hardness of mould, to meet the punching press needs of part, foundry goods.
Object of the present invention can be achieved through the following technical solutions: a kind of nano aluminium oxide Mold Metal stupalith and preparation method thereof, and described cermet material comprises following composition by weight percentage:
Nano-zirconium carbide 4wt%-9wt%,
Nanometer lanthanum hexaborane 3wt%-10wt%,
Cobalt carbide 1.5wt%-4.5wt%,
Boron nitride 2.5wt%-5wt%,
Magnesium oxide 6wt%-16wt%,
Silication manganese 5wt%-12wt%,
Wolfram varbide 3wt%-7wt%,
Molybdic oxide 2wt%-8wt%,
Magnesium silicide 4wt%-10wt%,
Surplus is aluminum oxide.
Preferably, described a kind of nano aluminium oxide Mold Metal stupalith, comprises following composition by weight percentage:
Nano-zirconium carbide 5wt%-7wt%,
Nanometer lanthanum hexaborane 5wt%-8wt%,
Cobalt carbide 2.5wt%-3.5wt%,
Boron nitride 3.5wt%-4.5wt%,
Magnesium oxide 9wt%-14wt%,
Silication manganese 7wt%-10wt%,
Wolfram varbide 4wt%-6wt%,
Molybdic oxide 3wt%-7wt%,
Magnesium silicide 6wt%-9wt%,
Surplus is aluminum oxide.
The preparation method of described a kind of nano aluminium oxide Mold Metal stupalith, comprises the following steps:
Step one: take off the powder stating material by weight percentage respectively, nano-zirconium carbide 4wt%-9wt%, nanometer lanthanum hexaborane 3wt%-10wt%, cobalt carbide 1.5wt%-4.5wt%, boron nitride 2.5wt%-5wt%, magnesium oxide 6wt%-16wt%, silication manganese 5wt%-12wt%, wolfram varbide 3wt%-7wt%, molybdic oxide 2wt%-8wt%, magnesium silicide 4wt%-10wt%, surplus are aluminum oxide; Above-mentioned composition is added in stirrer, stirs 30-60min;
Step 2: the powder after step one being stirred carries out ball milling again in ball mill, Ball-milling Time is 1.5h-4h, and in ball mill, ratio of grinding media to material is 20:1-30:1;
Step 3: by shaping for the heating and mould pressing in graphite jig of the stupalith after step 2 ball milling, and carry out hot pressed sintering, sintering temperature is 1250-1400 DEG C, and sintering pressure is 40MPa-60MPa, sintering time is 1.5h-3.5h, is prepared as nano oxidized aluminum die stupalith after sintering.
Preferably, the preparation method of described a kind of nano aluminium oxide Mold Metal stupalith, in step 2, Ball-milling Time is 3h.
Preferably, the preparation method of described a kind of nano aluminium oxide Mold Metal stupalith, in step 2, in ball mill, ratio of grinding media to material is 25:1.
Preferably, the preparation method of described a kind of nano aluminium oxide Mold Metal stupalith, in step 3, sintering temperature is 1350 DEG C.
Preferably, the preparation method of described a kind of nano aluminium oxide Mold Metal stupalith, in step 3, sintering pressure is 50MPa.
Preferably, the preparation method of described a kind of nano aluminium oxide Mold Metal stupalith, in step 3, sintering time is 2.5h.
Beneficial effect: nano oxidized aluminum die stupalith of the present invention effectively raises the fracture toughness property of alumina ceramic material, bending strength and hardness, significantly improve the property indices of alumina cermet material further, improve the multi-functional characteristic of alumina cermet material, in cermet material of the present invention, the nano-zirconium carbide added and nanometer lanthanum hexaborane bi-material have played synergistic function, both improve fracture toughness property and the bending strength of the cermet material of preparation jointly, cobalt carbide and boron nitride bi-material improve the hardness of the stupalith of preparation jointly, and it is significant higher than the castering action of single component for hardness, create superperformance beyond expectation.
Embodiment
Below in conjunction with embodiment, the present invention is further illustrated.
Embodiment 1
Step one: take off the powder stating material by weight percentage respectively, nano-zirconium carbide 9wt%, nanometer lanthanum hexaborane 3wt%, cobalt carbide 4.5wt%, boron nitride 2.5wt%, magnesium oxide 6wt%, silication manganese 12wt%, wolfram varbide 7wt%, molybdic oxide 2wt%, magnesium silicide 10wt%, surplus are aluminum oxide; Above-mentioned composition is added in stirrer, stirs 60min;
Step 2: the powder after step one being stirred carries out ball milling again in ball mill, Ball-milling Time is 4h, and in ball mill, ratio of grinding media to material is 20:1;
Step 3: by shaping for the heating and mould pressing in graphite jig of the stupalith after step 2 ball milling, and carry out hot pressed sintering, sintering temperature is 1400 DEG C, and sintering pressure is 40MPa, and sintering time is 3.5h, is prepared as nano oxidized aluminum die stupalith after sintering.
Embodiment 2
Step one: take off the powder stating material by weight percentage respectively, nano-zirconium carbide 4wt%, nanometer lanthanum hexaborane 10wt%, cobalt carbide 1.5wt%, boron nitride 5wt%, magnesium oxide 16wt%, silication manganese 5wt%, wolfram varbide 3wt%, molybdic oxide 8wt%, magnesium silicide 4wt%, surplus are aluminum oxide; Above-mentioned composition is added in stirrer, stirs 30min;
Step 2: the powder after step one being stirred carries out ball milling again in ball mill, Ball-milling Time is 1.5h, and in ball mill, ratio of grinding media to material is 30:1;
Step 3: by shaping for the heating and mould pressing in graphite jig of the stupalith after step 2 ball milling, and carry out hot pressed sintering, sintering temperature is 1250 DEG C, and sintering pressure is 60MPa, and sintering time is 1.5h, is prepared as nano oxidized aluminum die stupalith after sintering.
Embodiment 3
Step one: take off the powder stating material by weight percentage respectively, nano-zirconium carbide 7wt%, nanometer lanthanum hexaborane 5wt%, cobalt carbide 3.5wt%, boron nitride 4.5wt%, magnesium oxide 9wt%, silication manganese 10wt%, wolfram varbide 4wt%, molybdic oxide 7wt%, magnesium silicide 6wt%, surplus are aluminum oxide; Above-mentioned composition is added in stirrer, stirs 60min;
Step 2: the powder after step one being stirred carries out ball milling again in ball mill, Ball-milling Time is 4h, and in ball mill, ratio of grinding media to material is 20:1;
Step 3: by shaping for the heating and mould pressing in graphite jig of the stupalith after step 2 ball milling, and carry out hot pressed sintering, sintering temperature is 1400 DEG C, and sintering pressure is 40MPa, and sintering time is 3.5h, is prepared as nano oxidized aluminum die stupalith after sintering.
Embodiment 4
Step one: take off the powder stating material by weight percentage respectively, nano-zirconium carbide 5wt%, nanometer lanthanum hexaborane 8wt%, cobalt carbide 2.5wt%, boron nitride 3.5wt%, magnesium oxide 14wt%, silication manganese 7wt%, wolfram varbide 6wt%, molybdic oxide 3wt%, magnesium silicide 9wt%, surplus are aluminum oxide; Above-mentioned composition is added in stirrer, stirs 30min;
Step 2: the powder after step one being stirred carries out ball milling again in ball mill, Ball-milling Time is 1.5h, and in ball mill, ratio of grinding media to material is 30:1;
Step 3: by shaping for the heating and mould pressing in graphite jig of the stupalith after step 2 ball milling, and carry out hot pressed sintering, sintering temperature is 1250 DEG C, and sintering pressure is 60MPa, and sintering time is 1.5h, is prepared as nano oxidized aluminum die stupalith after sintering.
Embodiment 5
Step one: take off the powder stating material by weight percentage respectively, nano-zirconium carbide 6wt%, nanometer lanthanum hexaborane 7wt%, cobalt carbide 3wt%, boron nitride 4wt%, magnesium oxide 12wt%, silication manganese 8wt%, wolfram varbide 5wt%, molybdic oxide 5wt%, magnesium silicide 7wt%, surplus are aluminum oxide; Above-mentioned composition is added in stirrer, stirs 45min;
Step 2: the powder after step one being stirred carries out ball milling again in ball mill, Ball-milling Time is 3h, and in ball mill, ratio of grinding media to material is 25:1;
Step 3: by shaping for the heating and mould pressing in graphite jig of the stupalith after step 2 ball milling, and carry out hot pressed sintering, sintering temperature is 1350 DEG C, and sintering pressure is 50MPa, and sintering time is 2.5h, is prepared as nano oxidized aluminum die stupalith after sintering.
Comparative example 1
Step one: take off the powder stating material by weight percentage respectively, nanometer lanthanum hexaborane 3wt%, cobalt carbide 4.5wt%, boron nitride 2.5wt%, magnesium oxide 6wt%, silication manganese 12wt%, wolfram varbide 7wt%, molybdic oxide 2wt%, magnesium silicide 10wt%, surplus are aluminum oxide; Above-mentioned composition is added in stirrer, stirs 60min;
Step 2: the powder after step one being stirred carries out ball milling again in ball mill, Ball-milling Time is 4h, and in ball mill, ratio of grinding media to material is 20:1;
Step 3: by shaping for the heating and mould pressing in graphite jig of the stupalith after step 2 ball milling, and carry out hot pressed sintering, sintering temperature is 1400 DEG C, and sintering pressure is 40MPa, and sintering time is 3.5h, is prepared as nano oxidized aluminum die stupalith after sintering.
Comparative example 2
Step one: take off the powder stating material by weight percentage respectively, nano-zirconium carbide 9wt%, cobalt carbide 4.5wt%, boron nitride 2.5wt%, magnesium oxide 6wt%, silication manganese 12wt%, wolfram varbide 7wt%, molybdic oxide 2wt%, magnesium silicide 10wt%, surplus are aluminum oxide; Above-mentioned composition is added in stirrer, stirs 60min;
Step 2: the powder after step one being stirred carries out ball milling again in ball mill, Ball-milling Time is 4h, and in ball mill, ratio of grinding media to material is 20:1;
Step 3: by shaping for the heating and mould pressing in graphite jig of the stupalith after step 2 ball milling, and carry out hot pressed sintering, sintering temperature is 1400 DEG C, and sintering pressure is 40MPa, and sintering time is 3.5h, is prepared as nano oxidized aluminum die stupalith after sintering.
Comparative example 3
Step one: take off the powder stating material by weight percentage respectively, cobalt carbide 4.5wt%, boron nitride 2.5wt%, magnesium oxide 6wt%, silication manganese 12wt%, wolfram varbide 7wt%, molybdic oxide 2wt%, magnesium silicide 10wt%, surplus are aluminum oxide; Above-mentioned composition is added in stirrer, stirs 60min;
Step 2: the powder after step one being stirred carries out ball milling again in ball mill, Ball-milling Time is 4h, and in ball mill, ratio of grinding media to material is 20:1;
Step 3: by shaping for the heating and mould pressing in graphite jig of the stupalith after step 2 ball milling, and carry out hot pressed sintering, sintering temperature is 1400 DEG C, and sintering pressure is 40MPa, and sintering time is 3.5h, is prepared as nano oxidized aluminum die stupalith after sintering.
Comparative example 4
Step one: take off the powder stating material by weight percentage respectively, nano-zirconium carbide 9wt%, nanometer lanthanum hexaborane 3wt%, boron nitride 2.5wt%, magnesium oxide 6wt%, silication manganese 12wt%, wolfram varbide 7wt%, molybdic oxide 2wt%, magnesium silicide 10wt%, surplus are aluminum oxide; Above-mentioned composition is added in stirrer, stirs 60min;
Step 2: the powder after step one being stirred carries out ball milling again in ball mill, Ball-milling Time is 4h, and in ball mill, ratio of grinding media to material is 20:1;
Step 3: by shaping for the heating and mould pressing in graphite jig of the stupalith after step 2 ball milling, and carry out hot pressed sintering, sintering temperature is 1400 DEG C, and sintering pressure is 40MPa, and sintering time is 3.5h, is prepared as nano oxidized aluminum die stupalith after sintering.
Comparative example 5
Step one: take off the powder stating material by weight percentage respectively, nano-zirconium carbide 9wt%, nanometer lanthanum hexaborane 3wt%, cobalt carbide 4.5wt%, magnesium oxide 6wt%, silication manganese 12wt%, wolfram varbide 7wt%, molybdic oxide 2wt%, magnesium silicide 10wt%, surplus are aluminum oxide; Above-mentioned composition is added in stirrer, stirs 60min;
Step 2: the powder after step one being stirred carries out ball milling again in ball mill, Ball-milling Time is 4h, and in ball mill, ratio of grinding media to material is 20:1;
Step 3: by shaping for the heating and mould pressing in graphite jig of the stupalith after step 2 ball milling, and carry out hot pressed sintering, sintering temperature is 1400 DEG C, and sintering pressure is 40MPa, and sintering time is 3.5h, is prepared as nano oxidized aluminum die stupalith after sintering.
Comparative example 6
Step one: take off the powder stating material by weight percentage respectively, nano-zirconium carbide 9wt%, nanometer lanthanum hexaborane 3wt%, magnesium oxide 6wt%, silication manganese 12wt%, wolfram varbide 7wt%, molybdic oxide 2wt%, magnesium silicide 10wt%, surplus are aluminum oxide; Above-mentioned composition is added in stirrer, stirs 60min;
Step 2: the powder after step one being stirred carries out ball milling again in ball mill, Ball-milling Time is 4h, and in ball mill, ratio of grinding media to material is 20:1;
Step 3: by shaping for the heating and mould pressing in graphite jig of the stupalith after step 2 ball milling, and carry out hot pressed sintering, sintering temperature is 1400 DEG C, and sintering pressure is 40MPa, and sintering time is 3.5h, is prepared as nano oxidized aluminum die stupalith after sintering.
The various performances of the nano oxidized aluminum die stupalith of embodiment 1 to 5 are as follows:
The performance of the stupalith of comparative example 1 to 3 is as follows:
The performance of the stupalith of comparative example 4 to 6 is as follows:
| Hardness (GPa) | Fracture toughness property | Bending strength (MPa) | |
| Comparative example 4 | 11.6 | 6.3 | 1204 |
| Comparative example 5 | 11.2 | 6.2 | 1217 |
| Comparative example 6 | 8.1 | 6.4 | 1195 |
Claims (8)
1. a nano aluminium oxide Mold Metal stupalith, is characterized in that, described cermet material comprises following composition by weight percentage:
Nano-zirconium carbide 4wt%-9wt%,
Nanometer lanthanum hexaborane 3wt%-10wt%,
Cobalt carbide 1.5wt%-4.5wt%,
Boron nitride 2.5wt%-5wt%,
Magnesium oxide 6wt%-16wt%,
Silication manganese 5wt%-12wt%,
Wolfram varbide 3wt%-7wt%,
Molybdic oxide 2wt%-8wt%,
Magnesium silicide 4wt%-10wt%,
Surplus is aluminum oxide.
2. a kind of nano aluminium oxide Mold Metal stupalith according to claim 1, it is characterized in that, described cermet material comprises following composition by weight percentage:
Nano-zirconium carbide 5wt%-7wt%,
Nanometer lanthanum hexaborane 5wt%-8wt%,
Cobalt carbide 2.5wt%-3.5wt%,
Boron nitride 3.5wt%-4.5wt%,
Magnesium oxide 9wt%-14wt%,
Silication manganese 7wt%-10wt%,
Wolfram varbide 4wt%-6wt%,
Molybdic oxide 3wt%-7wt%,
Magnesium silicide 6wt%-9wt%,
Surplus is aluminum oxide.
3. the preparation method of a kind of nano aluminium oxide Mold Metal stupalith according to claim 1, it is characterized in that, described preparation method comprises the following steps:
Step one: take off the powder stating material by weight percentage respectively, nano-zirconium carbide 4wt%-9wt%, nanometer lanthanum hexaborane 3wt%-10wt%, cobalt carbide 1.5wt%-4.5wt%, boron nitride 2.5wt%-5wt%, magnesium oxide 6wt%-16wt%, silication manganese 5wt%-12wt%, wolfram varbide 3wt%-7wt%, molybdic oxide 2wt%-8wt%, magnesium silicide 4wt%-10wt%, surplus are aluminum oxide; Above-mentioned composition is added in stirrer, stirs 30-60min;
Step 2: the powder after step one being stirred carries out ball milling again in ball mill, Ball-milling Time is 1.5h-4h, and in ball mill, ratio of grinding media to material is 20:1-30:1;
Step 3: by shaping for the heating and mould pressing in graphite jig of the stupalith after step 2 ball milling, and carry out hot pressed sintering, sintering temperature is 1250-1400 DEG C, and sintering pressure is 40MPa-60MPa, sintering time is 1.5h-3.5h, is prepared as nano oxidized aluminum die stupalith after sintering.
4. the preparation method of a kind of nano aluminium oxide Mold Metal stupalith according to claim 3, it is characterized in that, in described preparation method's step 2, Ball-milling Time is 3h.
5. the preparation method of a kind of nano aluminium oxide Mold Metal stupalith according to claim 3, it is characterized in that, in described preparation method's step 2, in ball mill, ratio of grinding media to material is 25:1.
6. the preparation method of a kind of nano aluminium oxide Mold Metal stupalith according to claim 3, it is characterized in that, in described preparation method's step 3, sintering temperature is 1350 DEG C.
7. the preparation method of a kind of nano aluminium oxide Mold Metal stupalith according to claim 3, it is characterized in that, in described preparation method's step 3, sintering pressure is 50MPa.
8. the preparation method of a kind of nano aluminium oxide Mold Metal stupalith according to claim 3, it is characterized in that, in described preparation method's step 3, sintering time is 2.5h.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106747386A (en) * | 2017-02-27 | 2017-05-31 | 合肥智慧龙图腾知识产权股份有限公司 | A kind of high strength ceramic material and preparation method thereof |
| CN106747361A (en) * | 2017-01-23 | 2017-05-31 | 江苏顺通管业有限公司 | A kind of manufacture method of three-way valve mold |
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| CN103922750A (en) * | 2014-04-18 | 2014-07-16 | 淄博大方新材料科技有限公司 | Wear-resistant silicon nitride ceramic material and preparation method thereof |
| CN104311035A (en) * | 2014-08-04 | 2015-01-28 | 余姚市巧迪电器厂 | A zirconium carbide-based multi-component nanometer composite ceramic mould material and a preparing method thereof |
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| CN1271706A (en) * | 2000-05-26 | 2000-11-01 | 清华大学 | High-antiwear composite ceramet material for cutting tools |
| CN102173792A (en) * | 2011-02-23 | 2011-09-07 | 哈尔滨工业大学 | Ceramic composite material for thin-strip casting side sealing plate and preparation method thereof |
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| CN106747361A (en) * | 2017-01-23 | 2017-05-31 | 江苏顺通管业有限公司 | A kind of manufacture method of three-way valve mold |
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