CN105839035A - Nano-aluminum-oxide-based metal ceramic mold material and preparation method thereof - Google Patents
Nano-aluminum-oxide-based metal ceramic mold material and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C47/00—Making alloys containing metallic or non-metallic fibres or filaments
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Abstract
The invention discloses a nano-aluminum-oxide-based metal ceramic mold material and a preparation method thereof. The metal ceramic mold material is prepared from, by weight, nano aluminum oxide, boron nitride, samarium powder, slag powder, titanium hydride, lithium vanadate, aluminum borate whiskers, gallium oxide, nano calcium carbonate, titanium diboride, iodide europium, niobium carbide, yttrium oxide, erucyl amide, tantalum carbide, molybdenum disulfide and dichloromethylvinylsilane. The metal ceramic mold material is good in bending strength and breaking tenacity and ling in service life, and the defects that a traditional metal ceramic mold material is prone to cracking, poor in tenacity and accordingly short in service life are overcome. Meanwhile, according to the prepared mold, in the actual using process, demolding is easy, the abrasion resistance is high, the quality of finished products is good, and the yield is high.
Description
Technical field
The invention belongs to mold materials field, be specifically related to a kind of nano aluminium oxide based ceramic metal mold materials and preparation method thereof.
Background technology
Mould is technological equipment important in the manufacture of communication equipment, industrial devices, auto parts and components, enjoys the good reputation of " mother of industry ", has that efficiency is high, quality is good, save material, reduce many advantages such as cost.According to statistics, in the machining goods of all departments, the parts of more than 60% are required for using mould molding to produce, and therefore mould accounts for critical role in commercial production in development.
Cermet mold material has high intensity, high rigidity, the advantage such as high temperature resistant, wear-resistant, is widely used in hot extrusion molding.Main in cermet mold material have for alumina base mould and silicon nitride basic mode.Although cermet mold material has above advantage, but both thermal coefficient of expansions of the metal phase in cermet mold material and ceramic phase difference is bigger, it is easy to cracks and ftractures, affects product quality and die life；Additionally, the metal used also is easy to oxidation in die molding process, also easy sizing in extrusion process, affect quality and the yields of product.Thus, it is necessary to the performance of cermet mold material is promoted, improves the mold use life-span, reduce crack of die, increase toughness and the high-temperature stability of material, to expand the application of cermet mold.
Summary of the invention
At least one of present invention prior art problem to be solved, it is provided that a kind of nano aluminium oxide based ceramic metal mold materials and preparation method thereof.
In order to solve above-mentioned technical problem, the present invention is achieved by the following technical solutions:
The invention discloses a kind of nano aluminium oxide based ceramic metal mold materials, it is prepared by the component of following parts by weight: nano aluminium oxide 78-90 part, boron nitride 13-25 part, samarium powder 2-8 part, slag powders 4-9 part, titantium hydride 1-5 part, lithium vanadate 0.6-3 part, aluminium borate whisker 4-8 part, Digallium trioxide 0.4-2 part, nano-calcium carbonate 8-15 part, titanium diboride 1.3-4 part, iodate Asia europium 0.2-2 part, niobium carbide 0.4-3 part, yttrium oxide 0.8-2.6 part, erucyl amide 0.5-2.5 part, ramet 0.8-1.7 part, molybdenum bisuphide 0.5-2 part, methylvinyldichlorosilane 0.2-2 part.
Preferably, the mean diameter of described nano aluminium oxide is 100-300nm.
Described nano aluminium oxide based ceramic metal mold materials, is prepared by the component of following parts by weight: nano aluminium oxide 82 parts, boron nitride 16 parts, 5 parts of samarium powder, slag powders 6 parts, titantium hydride 3 parts, lithium vanadate 2.3 parts, aluminium borate whisker 5 parts, Digallium trioxide 1.2 parts, nano-calcium carbonate 9 parts, titanium diboride 1.9 parts, iodate Asia europium 0.6 part, niobium carbide 1.7 parts, yttrium oxide 2.1 parts, erucyl amide 0.9 part, ramet 1.2 parts, molybdenum bisuphide 1.4 parts, methylvinyldichlorosilane 1 part.
Described nano aluminium oxide based ceramic metal mold materials, is prepared by the component of following parts by weight: nano aluminium oxide 87 parts, boron nitride 16 parts, 6 parts of samarium powder, slag powders 5 parts, titantium hydride 2 parts, lithium vanadate 1.4 parts, aluminium borate whisker 6 parts, Digallium trioxide 1.6 parts, nano-calcium carbonate 9 parts, titanium diboride 2.6 parts, iodate Asia europium 0.7 part, niobium carbide 2.1 parts, yttrium oxide 1.3 parts, erucyl amide 1.6 parts, ramet 1.4 parts, molybdenum bisuphide 1.3 parts, methylvinyldichlorosilane 0.7 part.
The present invention also provides for being the preparation method of a kind of described nano aluminium oxide based ceramic metal mold materials, comprises the following steps:
(1) dispensing: each component proportion is weighed according to above-mentioned weight portion；
(2) ball mill mixing: other dispensing upper in addition to nano aluminium oxide being put in ball mill, its ratio of grinding media to material is 18-30:1, after wet grinding 12-24 hour, it is vacuum dried 24 hours at 60 DEG C, obtain ball milling material, after then mixing homogeneously with nano aluminium oxide, obtain mixed powder；
(3) forming and sintering: by compressing for above-mentioned mixed powder, pressed compact is prepared under 400-600MPa pressure, pressed compact is placed in vacuum sintering funace, it is warming up to 1560-1680 DEG C of temperature for 8-20 DEG C/min with programming rate, under 25-40MPa pressure, sintering 1-3 hour, then furnace cooling i.e. obtains nano aluminium oxide based ceramic metal mold materials.
Preferably, the wet grinding media in described step (2) is dehydrated alcohol or acetone, and ratio of grinding media to material is 23:1.
Compressing pressure in described step (3) is 480MPa.
Sintering condition in described step (3), for being that 17 DEG C/min is warming up to 1620 DEG C of temperature with programming rate, under 28MPa pressure, sinters 1.5 hours.
Owing to have employed above technical scheme, the present invention compared with prior art has the advantages that
The bending strength of the cermet mold material that the present invention provides is 972-998MPa, and fracture toughness is 10.6-12.4MPa m1/2, it is not less than 5000 times, shows good bending strength, fracture toughness and longer service life service life, overcome easy to crack, the poor toughness of traditional cermet mold material and cause short deficiency in service life.Meanwhile, in actual use, the easy demoulding of mould, wearability prepared by the present invention are strong, and the quality of shaped article is preferable, and yield is high.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in further detail.Following example are used for illustrating the present invention, but are not limited to the scope of the present invention.
Embodiment 1
The preparation method of the nano aluminium oxide based ceramic metal mold materials described in the present embodiment, comprises the following steps:
(1) dispensing: each component proportion is weighed according to weight portion: nano aluminium oxide 78 parts, boron nitride 13 parts, 2 parts of samarium powder, slag powders 4 parts, titantium hydride 1 part, lithium vanadate 0.6 part, aluminium borate whisker 4 parts, Digallium trioxide 0.4 part, nano-calcium carbonate 8 parts, titanium diboride 1.3 parts, iodate Asia europium 0.2 part, niobium carbide 0.4 part, yttrium oxide 0.8 part, erucyl amide 0.5 part, ramet 0.8 part, molybdenum bisuphide 0.5 part, methylvinyldichlorosilane 0.2 part；
(2) ball mill mixing: other dispensing upper in addition to nano aluminium oxide being put in ball mill, its ratio of grinding media to material is 18:1, after wet grinding 12 hours, is vacuum dried 24 hours at 60 DEG C, obtains ball milling material, after then mixing homogeneously with nano aluminium oxide, obtain mixed powder；
(3) forming and sintering: by compressing for above-mentioned mixed powder, pressed compact is prepared under 400MPa pressure, pressed compact is placed in vacuum sintering funace, it is that 8 DEG C/min is warming up to 1560 DEG C of temperature with programming rate, under 25MPa pressure, sintering 1 hour, then furnace cooling i.e. obtains nano aluminium oxide based ceramic metal mold materials.
Embodiment 2
The preparation method of the nano aluminium oxide based ceramic metal mold materials described in the present embodiment, comprises the following steps:
(1) dispensing: each component proportion is weighed according to weight portion: nano aluminium oxide 90 parts, boron nitride 25 parts, 8 parts of samarium powder, slag powders 9 parts, titantium hydride 5 parts, lithium vanadate 3 parts, aluminium borate whisker 8 parts, Digallium trioxide 2 parts, nano-calcium carbonate 15 parts, titanium diboride 4 parts, iodate Asia europium 2 parts, niobium carbide 3 parts, yttrium oxide 2.6 parts, erucyl amide 2.5 parts, ramet 1.7 parts, molybdenum bisuphide 2 parts, methylvinyldichlorosilane 2 parts；
(2) ball mill mixing: other dispensing upper in addition to nano aluminium oxide being put in ball mill, its ratio of grinding media to material is 30:1, after wet grinding 24 hours, is vacuum dried 24 hours at 60 DEG C, obtains ball milling material, after then mixing homogeneously with nano aluminium oxide, obtain mixed powder；
(3) forming and sintering: by compressing for above-mentioned mixed powder, pressed compact is prepared under 600MPa pressure, pressed compact is placed in vacuum sintering funace, it is that 20 DEG C/min is warming up to 1680 DEG C of temperature with programming rate, under 40MPa pressure, sintering 3 hours, then furnace cooling i.e. obtains nano aluminium oxide based ceramic metal mold materials.
Embodiment 3
The preparation method of the nano aluminium oxide based ceramic metal mold materials described in the present embodiment, comprises the following steps:
(1) dispensing: each component proportion is weighed according to weight portion: nano aluminium oxide 84 parts, boron nitride 19 parts, 5 parts of samarium powder, slag powders 6 parts, titantium hydride 3 parts, lithium vanadate 1.8 parts, aluminium borate whisker 6 parts, Digallium trioxide 1.2 parts, nano-calcium carbonate 11 parts, titanium diboride 2.6 parts, iodate Asia europium 1.1 parts, niobium carbide 1.7 parts, yttrium oxide 1.7 parts, erucyl amide 1.5 parts, ramet 1.2 parts, molybdenum bisuphide 1.3 parts, methylvinyldichlorosilane 1.1 parts；
(2) ball mill mixing: other dispensing upper in addition to nano aluminium oxide being put in ball mill, its ratio of grinding media to material is 24:1, after wet grinding 18 hours, is vacuum dried 24 hours at 60 DEG C, obtains ball milling material, after then mixing homogeneously with nano aluminium oxide, obtain mixed powder；
(3) forming and sintering: by compressing for above-mentioned mixed powder, pressed compact is prepared under 500MPa pressure, pressed compact is placed in vacuum sintering funace, it is that 14 DEG C/min is warming up to 1620 DEG C of temperature with programming rate, under 32MPa pressure, sintering 2 hours, then furnace cooling i.e. obtains nano aluminium oxide based ceramic metal mold materials.
Embodiment 4
The preparation method of the nano aluminium oxide based ceramic metal mold materials described in the present embodiment, comprises the following steps:
(1) dispensing: each component proportion is weighed according to weight portion: nano aluminium oxide 82 parts, boron nitride 16 parts, 5 parts of samarium powder, slag powders 6 parts, titantium hydride 3 parts, lithium vanadate 2.3 parts, aluminium borate whisker 5 parts, Digallium trioxide 1.2 parts, nano-calcium carbonate 9 parts, titanium diboride 1.9 parts, iodate Asia europium 0.6 part, niobium carbide 1.7 parts, yttrium oxide 2.1 parts, erucyl amide 0.9 part, ramet 1.2 parts, molybdenum bisuphide 1.4 parts, methylvinyldichlorosilane 1 part；
(2) ball mill mixing: other dispensing upper in addition to nano aluminium oxide being put in ball mill, its ratio of grinding media to material is 23:1, after wet grinding 20 hours, is vacuum dried 24 hours at 60 DEG C, obtains ball milling material, after then mixing homogeneously with nano aluminium oxide, obtain mixed powder；
(3) forming and sintering: by compressing for above-mentioned mixed powder, pressed compact is prepared under 480MPa pressure, pressed compact is placed in vacuum sintering funace, it is that 17 DEG C/min is warming up to 1620 DEG C of temperature with programming rate, under 28MPa pressure, sintering 1.5 hours, then furnace cooling i.e. obtains nano aluminium oxide based ceramic metal mold materials.
Embodiment 5
The preparation method of the nano aluminium oxide based ceramic metal mold materials described in the present embodiment, comprises the following steps:
(1) dispensing: each component proportion is weighed according to weight portion: nano aluminium oxide 87 parts, boron nitride 16 parts, 6 parts of samarium powder, slag powders 5 parts, titantium hydride 2 parts, lithium vanadate 1.4 parts, aluminium borate whisker 6 parts, Digallium trioxide 1.6 parts, nano-calcium carbonate 9 parts, titanium diboride 2.6 parts, iodate Asia europium 0.7 part, niobium carbide 2.1 parts, yttrium oxide 1.3 parts, erucyl amide 1.6 parts, ramet 1.4 parts, molybdenum bisuphide 1.3 parts, methylvinyldichlorosilane 0.7 part；
(2) ball mill mixing: other dispensing upper in addition to nano aluminium oxide being put in ball mill, its ratio of grinding media to material is 23:1, after wet grinding 20 hours, is vacuum dried 24 hours at 60 DEG C, obtains ball milling material, after then mixing homogeneously with nano aluminium oxide, obtain mixed powder；
(3) forming and sintering: by compressing for above-mentioned mixed powder, pressed compact is prepared under 480MPa pressure, pressed compact is placed in vacuum sintering funace, it is that 17 DEG C/min is warming up to 1620 DEG C of temperature with programming rate, under 28MPa pressure, sintering 1.5 hours, then furnace cooling i.e. obtains nano aluminium oxide based ceramic metal mold materials.
Comparative example 1
This comparative example prepares cermet mold material with reference to embodiment 1, the difference is that only: without titantium hydride and samarium powder in this comparative example.
Comparative example 2
This comparative example prepares cermet mold material with reference to embodiment 1, the difference is that only: without lithium vanadate and ramet in this comparative example.
Performance test
Cermet mold material prepared by above-mentioned all embodiments and comparative example is carried out properties test, and its test result see table:
| Bending strength MPa | Fracture toughness MPa m1/2 | Service life/time | |
| Embodiment 1 | 985 | 10.6 | 5000 |
| Embodiment 2 | 972 | 11.5 | 5300 |
| Embodiment 3 | 989 | 11.8 | 5400 |
| Embodiment 4 | 998 | 12.4 | 5600 |
| Embodiment 5 | 993 | 12.1 | 5800 |
| Comparative example 1 | 874 | 8.5 | 4200 |
| Comparative example 2 | 869 | 8.2 | 4400 |
Can be seen that from upper table, the bending strength of the cermet mold material that the present invention provides is 972-998MPa, and fracture toughness is 10.6-12.4MPa m1/2, it is not less than 5000 times, shows good bending strength, fracture toughness and longer service life service life, overcome easy to crack, the poor toughness of traditional cermet mold material and cause short deficiency in service life.Meanwhile, in actual use, the easy demoulding of mould, wearability prepared by the present invention are strong, and the quality of shaped article is preferable, and yield is high.By two comparative examples, titantium hydride and samarium powder, and the above performance of the mold materials of preparation is all brought certain beneficial effect by the mutual synergism of lithium vanadate and ramet.
Claims (8)
1. a nano aluminium oxide based ceramic metal mold materials, it is characterized in that, it is prepared by the component of following parts by weight: nano aluminium oxide 78-90 part, boron nitride 13-25 part, samarium powder 2-8 part, slag powders 4-9 part, titantium hydride 1-5 part, lithium vanadate 0.6-3 part, aluminium borate whisker 4-8 part, Digallium trioxide 0.4-2 part, nano-calcium carbonate 8-15 part, titanium diboride 1.3-4 part, iodate Asia europium 0.2-2 part, niobium carbide 0.4-3 part, yttrium oxide 0.8-2.6 part, erucyl amide 0.5-2.5 part, ramet 0.8-1.7 part, molybdenum bisuphide 0.5-2 part, methylvinyldichlorosilane 0.2-2 part.
Nano aluminium oxide based ceramic metal mold materials the most according to claim 1, it is characterised in that the mean diameter of described nano aluminium oxide is 100-300nm.
Nano aluminium oxide based ceramic metal mold materials the most according to claim 1, it is characterized in that, the component of following parts by weight be prepared: nano aluminium oxide 82 parts, boron nitride 16 parts, 5 parts of samarium powder, slag powders 6 parts, titantium hydride 3 parts, lithium vanadate 2.3 parts, aluminium borate whisker 5 parts, Digallium trioxide 1.2 parts, nano-calcium carbonate 9 parts, titanium diboride 1.9 parts, iodate Asia europium 0.6 part, niobium carbide 1.7 parts, yttrium oxide 2.1 parts, erucyl amide 0.9 part, ramet 1.2 parts, molybdenum bisuphide 1.4 parts, methylvinyldichlorosilane 1 part.
Nano aluminium oxide based ceramic metal mold materials the most according to claim 1, it is characterized in that, the component of following parts by weight be prepared: nano aluminium oxide 87 parts, boron nitride 16 parts, 6 parts of samarium powder, slag powders 5 parts, titantium hydride 2 parts, lithium vanadate 1.4 parts, aluminium borate whisker 6 parts, Digallium trioxide 1.6 parts, nano-calcium carbonate 9 parts, titanium diboride 2.6 parts, iodate Asia europium 0.7 part, niobium carbide 2.1 parts, yttrium oxide 1.3 parts, erucyl amide 1.6 parts, ramet 1.4 parts, molybdenum bisuphide 1.3 parts, methylvinyldichlorosilane 0.7 part.
5. the preparation method of the nano aluminium oxide based ceramic metal mold materials as described in any one of claim 1-4, it is characterised in that comprise the following steps:
(1) dispensing: each component proportion is weighed according to above-mentioned weight portion；
(2) ball mill mixing: other dispensing upper in addition to nano aluminium oxide being put in ball mill, its ratio of grinding media to material is 18-30:1, after wet grinding 12-24 hour, it is vacuum dried 24 hours at 60 DEG C, obtain ball milling material, after then mixing homogeneously with nano aluminium oxide, obtain mixed powder；
(3) forming and sintering: by compressing for above-mentioned mixed powder, pressed compact is prepared under 400-600MPa pressure, pressed compact is placed in vacuum sintering funace, it is warming up to 1560-1680 DEG C of temperature for 8-20 DEG C/min with programming rate, under 25-40MPa pressure, sintering 1-3 hour, then furnace cooling i.e. obtains nano aluminium oxide based ceramic metal mold materials.
The preparation method of nano aluminium oxide based ceramic metal mold materials the most according to claim 5, it is characterised in that the wet grinding media in described step (2) is dehydrated alcohol or acetone, its ratio of grinding media to material is 23:1.
The preparation method of nano aluminium oxide based ceramic metal mold materials the most according to claim 5, it is characterised in that the compressing pressure in described step (3) is 480MPa.
The preparation method of nano aluminium oxide based ceramic metal mold materials the most according to claim 5, it is characterized in that, sintering condition in described step (3), for being that 17 DEG C/min is warming up to 1620 DEG C of temperature with programming rate, under 28MPa pressure, sinters 1.5 hours.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108455996A (en) * | 2018-01-04 | 2018-08-28 | 江西领航宇宙陶瓷材料有限公司 | A kind of preparation method of nano aluminum ceramics |
| CN111304561A (en) * | 2020-03-20 | 2020-06-19 | 福建省盛荣生态花卉研究院有限责任公司 | Wear-resistant high-strength metal ceramic material and preparation process thereof |
| CN112939607A (en) * | 2021-02-05 | 2021-06-11 | 福建华清电子材料科技有限公司 | High-thermal-conductivity aluminum nitride ceramic and preparation method thereof |
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| CN112939607A (en) * | 2021-02-05 | 2021-06-11 | 福建华清电子材料科技有限公司 | High-thermal-conductivity aluminum nitride ceramic and preparation method thereof |
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