CN1786240A - Block non crystal Ni-Si-Cr material and its preparation method - Google Patents
Block non crystal Ni-Si-Cr material and its preparation method Download PDFInfo
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- CN1786240A CN1786240A CN 200410100807 CN200410100807A CN1786240A CN 1786240 A CN1786240 A CN 1786240A CN 200410100807 CN200410100807 CN 200410100807 CN 200410100807 A CN200410100807 A CN 200410100807A CN 1786240 A CN1786240 A CN 1786240A
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Abstract
The invention relates to a block amorphous Ni-Si-Cr material and its manufacturing method. Its mass percent are Ni 39.3-52.5, Si 13.1-17.5, and Cr 30.0-47.6. The thickness of the block amorphous material is 10mm. The technique and equipment is simple. The cost is low. And the prepared material has good microscopic structure and performance.
Description
Technical field
The present invention has narrated a kind of block non crystal Ni-Si-Cr material and preparation method thereof.
Background technology
The block nanometer material has very excellent mechanical property, but the preparation of the low cost of block nanometer material has difficulties.The main method of preparation block nanometer material has compression moulding method, gross distortion method, galvanic deposit and the amorphous crystallization method of nano-powder at present, all there is high energy consumption, expensive and can't prepare the problem of large size material in these methods, and this has seriously influenced its fundamental research and industrial application.
Summary of the invention
The object of the present invention is to provide a kind of block non crystal Ni-Si-Cr material and preparation method thereof.
A kind of block non crystal Ni-Si-Cr material is characterized in that the quality percentage composition of material consists of: nickel 39.3～52.5, silicon 13.1～17.5, chromium 30.0～47.6.
The preparation method of block non crystal Ni-Si-Cr material of the present invention, it is characterized in that this method comprises: with mass ratio is silica flour: the raw material of nickel powder=1: 5～7, in ball mill, do and mixed 6-10 hour, place the pressure compacting of copper mould with 10～30MPa; Taking by weighing mass ratio again is chromium sesquioxide: chromium trioxide: the powdered reactant of aluminium=1: 2.6～3.3: 1.8～2.1, mix, place on the tantnickel mixed powder pressed compact, pressure with 10～30MPa is pressed into the reaction idiosome, place reaction vessel, use rare gas element purge reaction vessel to get rid of air wherein; Stock is heated to 150 ℃～200 ℃, and this temperature insulation 1～2 hour; Get rid of from container again from the gas of reaction mass surface desorption, feed 3～10MPa rare gas element; Continue to be heated to about 250～270 ℃, by the detonator initiation reaction, detonator is by permanganate, the magnesium powder, and material was cooled to room temperature with reaction vessel after the mixture reaction that sulfide is formed was finished.
The mass ratio of permanganate of the present invention, magnesium powder and sulfide is 1.0: 1.5: 1.5-2.5.
The weight percentage of detonator of the present invention accounts for 2～10% of total reaction material.
Adopt above technology, because reaction product has obtained bigger condensate depression in copper mould, the Ni-Si-Cr system has bigger decrystallized ability simultaneously, theoretically, obtains the Ni-Si-Cr block materials and has the possibility that forms amorphous.The XRD of the material that obtains, TEM result shows that it has non-crystal structure.The thickness of material is 10mm, and other direction is unrestricted.
Ni-Si-Cr bulk amorphous alloy material has high strength, high rigidity and excellent acid and anti-erosion property, is the advanced material with important application prospect.
The required temperature that adds of preparation method that the present invention adopts is low, and preparation technology and required equipment are simple, and be with low cost.
Material of the present invention has the advantage of purity height, dense structure, and resulting material has higher-strength, higher hardness and good resistance to abrasion (table 1).The material property favorable reproducibility of the present invention's preparation, the performance data plastisied dispersion of surveying is not more than 10%.
The measurement of hardness condition is that load 500g loads time length 5s.Adopt three point bending test to measure the bending strength of material, specimen size is 30 * 3 * 3mm, and span is 25mm, and the pressure head speed of moving down is 0.1mm/min.Wearing test is carried out on ball-disc type SRV micro-moving frictional wear trier, coils to be material of the present invention, is of a size of 19 * 19 * 4mm, and antithesis is the G Cr15 steel ball of Φ 10mm.Load 40N, amplitude 1mm, frequency 25Hz, 30 minutes runtime.
Hardness, flexural strength and the wear rate of table 1 Ni-Si-Cr bulk amorphous alloy material
| Hardness (GPa) | Flexural strength (MPa) | Wear rate (10 -14m 3·N -1·m -1) | |
| Ni-Si-Cr bulk amorphous alloy material | 7.8～11.2 | 850～1100 | 0.91～0.45 |
Embodiment
Embodiment 1:
Taking by weighing mass ratio respectively is silica flour: the raw material 35g of nickel powder=1: 5.5, and in ball mill, do and mixed 6 hours, place the pressure compacting of copper mould with 20MPa; Take by weighing mass ratio again and be chromium sesquioxide: chromium trioxide: the powdered reactant 40g of aluminium=1: 3.3: 2.1, mix, place on the tantnickel mixed powder pressed compact, be pressed into the reaction idiosome with the pressure of 20MPa, place reaction vessel.With rare gas element purge reaction vessel, to get rid of air wherein.Taking by weighing the 5g mass ratio is permanganate: the magnesium powder: the detonator of sulfide=1.0: 1.5: 2.0 is pressed into base with 35MPa pressure and places reaction vessel, with rare gas element purge reaction vessel, to get rid of air wherein.Stock is heated to 200 ℃, and, gets rid of from container, feed the 5MPa rare gas element again, continue about reactor heating to 270 ℃ detonator initiation reaction under this temperature from the gas of reaction mass surface desorption this temperature insulation 1 hour.Material was cooled to room temperature with reaction vessel after reaction was finished, and took out from container then.
The microhardness of material is that 7.9GPa, flexural strength are 880MPa, and wear rate is 0.9010
-14m
3N
-1M
-1
Embodiment 2: taking by weighing mass ratio respectively is silica flour: the raw material 35g of nickel powder=1: 6.5, and in ball mill, do and mixed 7 hours, place the pressure compacting of copper mould with 20MPa.Take by weighing mass ratio again and be chromium sesquioxide: chromium trioxide: the powdered reactant of aluminium=1: 2.6: 1.8, mix, take by weighing 50g and place on the tantnickel mixed powder pressed compact, be pressed into idiosome with 20MPa pressure.Taking by weighing the 5g mass ratio is permanganate: the magnesium powder: the detonator of sulfide=1.0: 1.5: 1.5, and with 35MPa pressure briquetting.The copper mould that reaction idiosome and detonator piece are housed is placed reaction vessel, use rare gas element purge reaction vessel to get rid of air wherein.Stock is heated to 200 ℃, and, gets rid of from container, feed the 5MPa rare gas element again from the gas of reaction mass surface desorption this temperature insulation 1 hour.Continue about reactor heating to 270 ℃ detonator initiation reaction under this temperature.Material was cooled to room temperature with reaction vessel after reaction was finished, and took out from container then.
The microhardness of material is that 7.9GPa, flexural strength are 1080MPa, and wear rate is 0.4610
-14m
3N
-1M
-1
Claims (4)
1, a kind of block non crystal Ni-Si-Cr material is characterized in that the quality percentage composition of material consists of: nickel 39.3～52.5, silicon 13.1～17.5, chromium 30.0～47.6.
2, preparation methods as claimed in claim 1, it is characterized in that this method comprises: with mass ratio is silica flour: the raw material of nickel powder=1: 5～7, in ball mill, do and mixed 6-10 hour, place the pressure compacting of copper mould with 10～30MPa; Taking by weighing mass ratio again is chromium sesquioxide: chromium trioxide: the powdered reactant of aluminium=1: 2.6～3.3: 1.8～2.1, mix, place on the tantnickel mixed powder pressed compact, pressure with 10～30MPa is pressed into the reaction idiosome, place reaction vessel, use rare gas element purge reaction vessel to get rid of air wherein; Stock is heated to 150 ℃～200 ℃, and this temperature insulation 1～2 hour; Get rid of from container again from the gas of reaction mass surface desorption, feed 3～10MPa rare gas element; Continue to be heated to about 250～270 ℃, by the detonator initiation reaction, detonator is by permanganate, the magnesium powder, and material was cooled to room temperature with reaction vessel after the mixture reaction that sulfide is formed was finished.
3, method as claimed in claim 2, the mass ratio that it is characterized in that permanganate, magnesium powder and sulfide is 1.0: 1.5: 1.5-2.5.
4, method as claimed in claim 2 is characterized in that the weight percentage of detonator accounts for 2～10% of total reaction material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410100807 CN1786240A (en) | 2004-12-10 | 2004-12-10 | Block non crystal Ni-Si-Cr material and its preparation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410100807 CN1786240A (en) | 2004-12-10 | 2004-12-10 | Block non crystal Ni-Si-Cr material and its preparation method |
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| CN1786240A true CN1786240A (en) | 2006-06-14 |
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| CN 200410100807 Pending CN1786240A (en) | 2004-12-10 | 2004-12-10 | Block non crystal Ni-Si-Cr material and its preparation method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102344149A (en) * | 2011-06-16 | 2012-02-08 | 兰州理工大学 | Preparation method of ZrB2 powder material |
| CN103726045A (en) * | 2012-10-15 | 2014-04-16 | 中国科学院兰州化学物理研究所 | Nickel and silicon intermetallic compound based composite coat making method |
-
2004
- 2004-12-10 CN CN 200410100807 patent/CN1786240A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102344149A (en) * | 2011-06-16 | 2012-02-08 | 兰州理工大学 | Preparation method of ZrB2 powder material |
| CN102344149B (en) * | 2011-06-16 | 2013-01-09 | 兰州理工大学 | Preparation method of ZrB2 powder material |
| CN103726045A (en) * | 2012-10-15 | 2014-04-16 | 中国科学院兰州化学物理研究所 | Nickel and silicon intermetallic compound based composite coat making method |
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