CN107338366B - Dispersion intensifying platinum and platinum composite material and preparation method - Google Patents
Dispersion intensifying platinum and platinum composite material and preparation method Download PDFInfo
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- CN107338366B CN107338366B CN201710623799.3A CN201710623799A CN107338366B CN 107338366 B CN107338366 B CN 107338366B CN 201710623799 A CN201710623799 A CN 201710623799A CN 107338366 B CN107338366 B CN 107338366B
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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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- C22C5/00—Alloys based on noble metals
- C22C5/04—Alloys based on a platinum group metal
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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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- C22C1/00—Making non-ferrous alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/14—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of noble metals or alloys based thereon
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Abstract
The invention belongs to technical field of metal material, and in particular to a kind of dispersion intensifying platinum and platinum composite material and preparation method.Technical problem to be solved by the invention is to provide the preparation methods of a kind of dispersion intensifying platinum and platinum composite material, the following steps are included: powder is made in dispersion intensifying platinum, platinum respectively, it is laid in sintering mold, by sintering, annealing, hot pressing, sizing hot forging, unformed hot forging, surface treatment, rolls finally obtained composite material.The composite material has weld, can carry out weld with alloy platinum material, platinum-rhodium alloy material, disperse alloy platinum material and disperse platinum rhodium material, while having the performances such as good elevated temperature strength, inoxidizability, anti-corrosion.
Description
Technical field
The invention belongs to technical field of metal material, and in particular to a kind of dispersion intensifying platinum and platinum composite material and its preparation
Method.I.e. by the way that dispersion intensifying platinum and platinum progress compound are obtained a kind of composite material.
Background technique
Platinum and platinum-rhodium alloy are widely used in glass industry.Dispersion-strengtherning alloy platinum material is using metal platinum as matrix, with gold
Belong to zirconium, yttrium, thorium, the new structural material that the oxides such as beryllium are dispersion strengthening phase, have good elevated temperature strength, inoxidizability with
And resistance to melting glass attack.However, the composite wood of dispersion intensifying platinum or dispersion intensifying platinum and platinum that existing method is prepared
The weld of material is unable to satisfy process requirements, thus can not platinum dish one layer of disperse material of key component weld to whole
A platinum product vessel structure is reinforced, or improves platinum dish in internal weld one layer of dispersion-strengtherning platinum material
Corrosion resistance.
Summary of the invention
It is difficult to forge platinum dish for the composite material of existing dispersion-strengtherning alloy platinum material or dispersion intensifying platinum and platinum
The problem of connecing reinforcing, the present invention provides a kind of dispersion intensifying platinums and platinum composite material and preparation method.This method is prepared into
The composite material arrived have weld, can with alloy platinum material, platinum-rhodium alloy material, disperse alloy platinum material and disperse platinum rhodium material into
Row weld, while there are the performances such as good elevated temperature strength, inoxidizability, anti-corrosion.
First technical problem to be solved by this invention is to provide the preparation of a kind of dispersion intensifying platinum and platinum composite material
Method.The preparation method the following steps are included:
1, dispersion intensifying platinum powder is prepared
1.1, vacuum melting: by weight percentage, by 0.01~0.6% disperse means, remaining for alloy platinum material mix and
Abundant melting under the conditions of vacuum degree < 10Pa, 1750~2000 DEG C of temperature, 8~100KHz of frequency, obtains liquid alloy；
1.2, cast: by 1.1 gained liquid alloy cast moldings under an inert gas, cast temperature is 1750~2000
℃；
1.3, powder powder processed: is made in 1.2 cast molding obtained materials；
2, platinum powder end is prepared
2.1, induction melting: alloy platinum material is incuded under conditions of 3~100KHz of frequency, 1750~2000 DEG C of temperature
Melting obtains liquid platinum；
2.2, cast: by 2.1 gained liquid platinum cast moldings, cast temperature is 1800~2100 DEG C；
2.3, powder powder processed: is made in 2.2 cast molding obtained materials；
3, dispersion intensifying platinum and platinum composite material are prepared
3.1, compound: by 1.3 and 2.3 gained powder overlapping tiles in sintering mold；
3.2, it is sintered: the powder that 3.1 complete is sintered at 1100~1500 DEG C；
3.3, anneal oxidation: 3.2 obtained materials are made annealing treatment at 1100~1400 DEG C；
3.4, hot pressing: 3.3 obtained materials are suppressed at 600~1300 DEG C, 4~100MPa of pressure；
3.5, sizing hot forging: 3.4 obtained materials carry out to annealing 15~60 minutes at 1100~1400 DEG C, then
It is forged on 200~400kg pneumatic hammer from upper and lower surfaces, 1100~1400 DEG C of initial forging temperature, final forging temperature 900~
It 1100 DEG C, forges to a thickness of 50~80% after 3.4 hot pressing；
3.6,3.5 obtained materials: being carried out annealing 15~60 minutes by unformed hot forging at 1100~1400 DEG C, so
It is forged on 200~400kg pneumatic hammer from six faces afterwards, 1100~1400 DEG C of initial forging temperature, final forging temperature 900~1100
DEG C, it forges to 40% or less with a thickness of 3.2 sintering obtained material thickness；
3.7, it is surface-treated: the booty on 3.6 obtained material surfaces, impurity being removed clean；
3.8, it rolls: 3.7 obtained materials is rolled, in distance objective 0.3~0.8mm of thickness, 1200~
It is heat-treated 15~60 minutes at 1400 DEG C, after heat treatment, then is rolled down to target thickness.
Preferably, in the preparation method step 1.1 of above-mentioned dispersion intensifying platinum and platinum composite material, the disperse means be zirconium,
At least one of yttrium, calcium, lanthanum or titanium；Or the alloy that zirconium, yttrium, calcium, lanthanum or titanium and platinum are formed.
Preferably, in the preparation method step 1.1 of above-mentioned dispersion intensifying platinum and platinum composite material, the alloy platinum material purity is
99.9% or more.The alloy platinum material is sponge state, sheet material, plate or melted ingot.
Preferably, in the preparation method step 1.1 or 2.1 of above-mentioned dispersion intensifying platinum and platinum composite material, when the melting
Between be 1~2 hour.
Preferably, in the preparation method step 1.2 of above-mentioned dispersion intensifying platinum and platinum composite material, the inert gas is argon
Gas, pressure are 0.02~0.08MPa.
Preferably, described to be cast into the preparation method step 1.2 or 2.2 of above-mentioned dispersion intensifying platinum and platinum composite material
Type is rodlike to be cast into, and diameter is 30~50mm.
Preferably, in the preparation method step 1.3 or 2.3 of above-mentioned dispersion intensifying platinum and platinum composite material, the powder
Granularity is 500 μm of <.
Preferably, in the preparation method step 3.1 of above-mentioned dispersion intensifying platinum and platinum composite material, the platinum powder account for platinum powder with
The 5~95% of dispersion-strengtherning platinum powder total weight.
Preferably, in the preparation method step 3.1 of above-mentioned dispersion intensifying platinum and platinum composite material, the sintering mold is
Cuboid or other shapes mold.The sintering mold is made of graphite or other materials not reacted with platinum.
Preferably, in the preparation method step 3.2 of above-mentioned dispersion intensifying platinum and platinum composite material, the sintering is in vacuum degree
It is carried out under < 10Pa；Or carried out under inert gas shielding, protective gas pressure is 10~300Pa.The inert gas is argon
Gas.
Specifically, the sintering time is 1 in the preparation method step 3.2 of above-mentioned dispersion intensifying platinum and platinum composite material
~5 hours.It is preferred that 3~4 hours.
Specifically, in the preparation method step 3.3 of above-mentioned dispersion intensifying platinum and platinum composite material, the annealing time
It is 1~24 hour.It is preferred that 6~12 hours.
Specifically, the pressing time is 1 in the preparation method step 3.4 of above-mentioned dispersion intensifying platinum and platinum composite material
~2 hours.
Preferably, in the preparation method step 3.8 of above-mentioned dispersion intensifying platinum and platinum composite material, the distance objective thickness
For 0.5mm.
Second technical problem to be solved by this invention is to provide the above-mentioned system by dispersion intensifying platinum and platinum composite material
The dispersion intensifying platinum and platinum composite material that Preparation Method is prepared.
The method of the present invention powder processed after being refined raw material platinum by special process, and by dispersion-strengtherning alloy platinum material powder,
The dispersion intensifying platinum and platinum composite material being prepared after the two is compound by specific processing step and condition with can with platinum,
The performance that platinum-rhodium alloy, dispersion intensifying platinum and dispersion intensifying platinum rhodium material are reliably hot-forged；Also there is dispersion intensifying platinum simultaneously
The intensity, toughness of material, resistance to Poisoning, low volatility.Gained composite material of the invention can be by way of hot forging to platinum device
The key component of ware is reinforced, and especially reinforces the vessel of disperse material production, plays and save non-key part platinum
The usage amount of gold.One block of 0.3mm thickness forging welding material of forging welding, can extend the service life of this part of platinum channel on 1mm thickness platinum channel
50~100%.
Detailed description of the invention
Used rectangular mould 1. bottom plate X1 2. side plate X4 when Fig. 1 is sintered
Fig. 2 composite inner institutional framework；Top is the institutional framework of alloy platinum material, and lower part is dispersion-strengtherning alloy platinum material
Institutional framework, the two are combined together under microstate
Specific embodiment
Since existing dispersion-strengtherning alloy platinum material has good elevated temperature strength, inoxidizability and resistance to melting glass attack
Property, in order to improve the service performance of vessel, it is desirable in one layer of dispersion-strengthened material in surface or key position weld of vessel, however
Existing dispersion-strengthened material or its composite material do not have weld, can not be with vessel weld.
In order to make dispersion-strengtherning alloy platinum material have weld, the present inventor has found by a large number of experiments, can be to dispersion-strengtherning
Alloy platinum material is modified, and it is compound to make it through special technique and alloy platinum material, so as to which answering with weld is prepared
Condensation material.
Specifically, the preparation method of dispersion intensifying platinum and platinum composite material, comprising the following steps:
1, dispersion intensifying platinum powder is prepared
1.1, vacuum melting: by weight percentage, by 0.01~0.6% disperse means, remaining for alloy platinum material mix and
Abundant melting under the conditions of vacuum degree < 10Pa, 1750~2000 DEG C of temperature, 8~100KHz of frequency, obtains liquid alloy；
1.2, cast: by 1.1 gained liquid alloy cast moldings under an inert gas, cast temperature is 1750~2000
℃；
1.3, powder powder processed: is made in 1.2 cast molding obtained materials；
2, platinum powder end is prepared
2.1, induction melting: alloy platinum material is incuded under conditions of 3~100KHz of frequency, 1750~2000 DEG C of temperature
Melting obtains liquid platinum；
2.2, cast: by 2.1 gained liquid platinum cast moldings, cast temperature is 1800~2100 DEG C；
2.3, powder powder processed: is made in 2.2 cast molding obtained materials；
3, dispersion intensifying platinum and platinum composite material are prepared
3.1, compound: 1.3 and 2.3 gained powder to be laid in sintering mold, one of which is laid on mold, separately
One kind is laid on former；
3.2, it is sintered: the powder that 3.1 complete is sintered at 1100~1500 DEG C；
3.3, anneal oxidation: 3.2 obtained materials are made annealing treatment at 1100~1400 DEG C；
3.4, hot pressing: 3.3 obtained materials are suppressed at 600~1300 DEG C, 4~100MPa of pressure；
3.5, sizing hot forging: 3.4 obtained materials carry out to annealing 15~60 minutes at 1100~1400 DEG C, then
It is forged on 200~400kg pneumatic hammer from upper and lower surfaces, 1100~1400 DEG C of initial forging temperature, final forging temperature 900~
It 1100 DEG C, forges to a thickness of 50~80% after 3.4 hot pressing；
3.6,3.5 obtained materials: being carried out annealing 15~60 minutes by unformed hot forging at 1100~1400 DEG C, so
It is forged on 200~400kg pneumatic hammer from six faces afterwards, 1100~1400 DEG C of initial forging temperature, final forging temperature 900~1100
DEG C, it forges to 40% or less with a thickness of 3.2 sintering obtained material thickness；
3.7, it is surface-treated: the booty on 3.6 obtained material surfaces, impurity being removed clean；
3.8, it rolls: 3.7 obtained materials is rolled, in distance objective 0.3~0.8mm of thickness, 1200~
It is heat-treated 15~60 minutes at 1400 DEG C, after heat treatment, then is rolled down to target thickness.
In the method for the present invention 1.1, the disperse means are at least one of zirconium, yttrium, calcium, lanthanum or titanium；Or zirconium, yttrium, calcium,
The alloy that lanthanum or titanium and platinum are formed.
In the method for the present invention 1.1, the alloy platinum material purity is 99.9% or more.The alloy platinum material is sponge state, sheet material, plate
Material or melted ingot.
In the method for the present invention 1.1 or 2.1, the smelting time is 1~2 hour.
In the method for the present invention 1.2, the inert gas is argon gas, and pressure is 0.02~0.08MPa.
In the method for the present invention 1.2 or 2.2, the cast molding is rodlike to be cast into, and diameter is 30~50mm.
In the method for the present invention 1.3 or 2.3, the granularity of the powder is 500 μm of <.
In the method for the present invention 3.1, the sintering mold is cuboid or other shapes mold.The sintering mold by
Graphite or other materials not reacted with platinum are made.
In the method for the present invention 3.2, the sintering is carried out at vacuum degree < 10Pa；Or carried out under inert gas shielding,
Protective gas pressure is 10~300Pa.The inert gas is argon gas.
In the method for the present invention 3.8, the distance objective is with a thickness of 0.5mm.
In the method for the present invention 1.3 or 2.3, the powder processed carries out powder processed using conventional method, and different process has different ginsengs
Number, powder processed can use various ways, and the key of powder is granule size in the method for the present invention, it is only necessary to guarantee the grain of powder
Degree is at 500 μm or less, but granularity is the smaller the better.
In the method for the present invention step 2, powder processed need to be refined again to alloy platinum material, the properties of product that otherwise powder processed obtains cannot
Meet subsequent requirement.
In the method for the present invention 3.1, general control platinum powder accounts for the 5~95% of total weight.The more composite material elongation percentage of platinum powder
It is better, but elevated temperature strength, inoxidizability, corrosion resistance can reduce；Dispersion intensifying platinum is then opposite.So can be according to composite wood
Expect the additive amount of requirement both reasonable designs within the above range of performance.Platinum powder and dispersion-strengtherning platinum powder can be 1 ︰ 1,
95 ︰ 5 can be up to.
It is different according to the different filling thickness of mold in the method for the present invention 3.1, general filling tiling with a thickness of 80~
200mm, finished ingot thickness are generally 10~40mm.
In the method for the present invention 3.2, sintering time is not particularly limited, and when sintering time is too long, then can be wasted time and energy consumption,
To properties of product without especial influence.Performance and energy consumption in order to balance, control sintering time are 1~5 hour.It is preferred that 3~4 hours.
In the method for the present invention 3.3, annealing time is not particularly limited, and when annealing time is too long, then can be wasted time and energy consumption,
To properties of product without especial influence.Performance and energy consumption in order to balance, the annealing time are 1~24 hour.It is preferred that 6~12
Hour.
In the method for the present invention 3.4, the pressing time is 1~2 hour.
In the method for the present invention step 3,3.1 only simply by two kinds of powder tiling overlappings；3.2 are made by way of sintering
It is bonded together, and thickness change is unobvious；3.3 change interior tissue by annealing, and thickness change is unobvious；3.4
Keep its top and bottom more fine and close with respect to previous step by hot pressing mode, but it is fine and close not enough, and thickness change is larger at this time；3.5
Keep it more fine and close in upper and lower surfaces by way of sizing hot forging, other faces are compared with previous step densification, at this time due to 3.4 hot pressing
It is to carry out hot pressing from upper and lower surfaces, then upper and lower surfaces are relatively more fine and close, if 3.5 are all forged from six faces respectively
It beats, it is bad that it will cause properties of product, so need to be forged from upper and lower surfaces, while being forged from upper and lower surfaces
Other faces can be promoted compared with previous step densification；3.6 are forged from six faces to a thickness of 3.2 burnings by the method for unformed hot forging
When tying 40% or less obtained material thickness, density of material has been met the requirements；3.7 bring one into since abovementioned steps are likely to result in
A little impurity, to remove impurity；3.8 are rolled down to the material that density has reached requirement required size, and operation of rolling product is close
Degree is substantially unchanged, and in order to guarantee quality, being rolled down to 0.3~0.8mm of distance objective thickness also needs to be heat-treated, and then rerolls
Make target thickness.Through the above steps, to obtain the composite material with weld, other performances can according to demand into
Row is adjusted.
Embodiment 1
The ratio in the present embodiment being both platinum powder and dispersion-strengtherning platinum powder is 1 ︰ 1, and in actual production, the ratio of the two can
It is up to 95 ︰ 5 according to demand.
1, ingredient: dispersion-strengtherning platinum powder: taking disperse means 0.06%, and surplus is platinum ingot of the purity 99.9% or more；Platinum powder:
Platinum ingot casting of the purity 99.9% or more；
2, disperse means that 1 is configured, platinum ingot vacuum melting and induction melting: are put into vacuum melting furnace in vacuum melting furnace
Middle carry out melting, vacuum degree 3Pa, temperature are 1850 DEG C, and the time is 2 hours, obtain being sufficiently mixed homogeneous liquid alloy；Induction
The platinum ingot configured in smelting furnace by 1 carries out melting, and frequency can be selected in 20KHz, and smelting temperature is at 1850 DEG C, and smelting time is 2
Hour；
3, it is cast into bar: liquid alloy and liquid metal that 2 obtain is cast to respectively in ready mold and cast
Club-shaped material, for bar diameter in 30mm, cast temperature is 1800 DEG C；
4, the disperse bar of 3 cast moldings powder processed: is prepared into dispersion intensifying platinum powder, powder grain by powder manufacturing apparatus
500 μm of degree, for use；Platinum stick is then also passed through into powder manufacturing apparatus, be prepared into platinum powder end, 500 μm of powder size, for use；
5, powder stacks: powder that 4 obtain is piled up in the in-mold molding of sintering according to the ratio of 1 ︰ 1.First will
6kg platinum powder is all deposited in cuboid mould inside, after all completing, is smoothed out surface with grafter, then by 6kg disperse
Strengthen platinum powder be deposited in cuboid mould inside again, after being stuffed entirely with, entire cuboid with a thickness of 120mm, for use；
6, it is sintered: 5 ready powder moulding mixtures being sintered in sintering furnace, vacuum degree 10Pa, sintering temperature 1100
DEG C, the time is 5 hours；
7, anneal oxidation is handled: the product that 6 are obtained is made annealing treatment at a temperature of 1400 DEG C, handles the time 24
Hour；
8, hot pressing: the product that 7 are obtained is placed in hot press, and temperature at 800 DEG C, pressed in 200MPa by pressure
System, the pressing time was at 2 hours；
9, sizing hot forging: the product that 8 are obtained carries out annealing 60 minutes at 1400 DEG C, then in 200kg air
It is forged, can only be forged from upper and lower surfaces on hammer, 1400 DEG C of initial forging temperature, forge number 2 times, final forging temperature 1100
DEG C, it forges 2 times, then 3 times the step for repetition, until the fine and close simultaneously ingot shape of product；
10, unformed hot forging: the product that will be obtained after 9 hot forgings carries out annealing 60 minutes at 1400 DEG C, then exists
It is forged on 200kg pneumatic hammer, needs to forge six faces of spindle at this time, keep it all fine and close in all directions, begin forging temperature
1400 DEG C of degree, forges number 2 times, 1100 DEG C of final forging temperature, forges 2 times；The step for repeating, makes the thickness (top and bottom of spindle
Between distance) be sintered 40%；
11, it is surface-treated: being handled the upper and lower surface for the product that 10 obtain by mechanical means such as milling, plane, mills, it will
The removals such as booty, impurity on two sides are clean；
12, it rolls: the product that 11 obtain being rolled on milling train, when being rolled down to 1.0mm, needs to carry out 1400
DEG C heat treatment, heat treatment time be 60 minutes, after the completion of heat treatment, then be rolled down to the thickness 0.5mm of target plate.
The finished product sampling that the present embodiment is obtained, sampling specification are as follows: long 100mm, width 10mm, thickness 0.5mm, and in temperature
Strength test is done when being 1400 DEG C.Under same stress, composite material high temperature elongation percentage of the present invention is common dispersion-strengtherning
12 times of platinum, are 2 times of common platinum, and high temperature service life is 240 times of common platinum.And composite material of the present invention has good weld
Performance can carry out forging welding with dispersion intensifying platinum, carry out forging welding in the bending part of vessel prepared by the dispersion intensifying platinum of 1.0mm thickness,
Service life 6 months herein can be extended.
Embodiment 2
The ratio in the present embodiment being both platinum powder and dispersion-strengtherning platinum powder is 3 ︰ 2, and in actual production, two ratios can
It is up to 95 ︰ 5 according to demand.
1, ingredient: dispersion-strengtherning platinum powder: taking disperse means 0.01%, and surplus is platinum ingot of the purity 99.9% or more；Platinum powder:
Platinum ingot casting of the purity 99.9% or more；
2, disperse means that 1 is configured, platinum ingot vacuum melting and induction melting: are put into vacuum melting furnace in vacuum melting furnace
Middle carry out melting, vacuum degree 10Pa, temperature are 1800 DEG C, and the time is 1 hour, obtain being sufficiently mixed homogeneous liquid alloy；Sense
The platinum ingot configured in smelting furnace by 1 is answered to carry out melting, frequency can be selected in 5KHz, and smelting temperature is at 1800 DEG C, and smelting time is 2
Hour；
3, it is cast into bar: liquid alloy and liquid metal that 2 obtain is cast to respectively in ready mold and cast
Club-shaped material, for bar diameter in 40mm, cast temperature is 1800 DEG C；
4, the disperse bar of 3 cast moldings powder processed: is prepared into dispersion intensifying platinum powder, powder grain by powder manufacturing apparatus
200 μm of degree, for use；Platinum stick is then also passed through into powder manufacturing apparatus, be prepared into platinum powder end, 200 μm of powder size, for use；
5, powder stacks: powder that 4 obtain is piled up in the in-mold molding of sintering according to the ratio of 3 ︰ 2.First will
6kg platinum powder is all deposited in cuboid mould inside and is smoothed out surface with grafter after band all completes, then more by 4 switches
Dissipate and strengthen platinum powder and be deposited in cuboid mould inside again, after band is stuffed entirely with, entire cuboid with a thickness of 100mm, to
With.
6, it is sintered: 5 ready powder moulding mixtures being sintered in sintering furnace, vacuum degree 1Pa, sintering temperature 1500
DEG C, the time is 4 hours；
7, anneal oxidation is handled: the product that 6 are obtained is made annealing treatment at a temperature of 1100 DEG C, handles the time 24
Between hour；
8, hot pressing: the product that 7 are obtained is placed in hot press, and temperature at 600 DEG C, pressed in 250MPa by pressure
System, the pressing time was at 2 hours；
9, sizing hot forging: the product that 8 are obtained carries out annealing 30 minutes at 1250 DEG C, then 400kg air again
It is forged, can only be forged from upper and lower surfaces on hammer, 1250 DEG C of initial forging temperature, forge number 1 time, final forging temperature 900
DEG C, it forges 1 time, then 2 times the step for repetition, until the fine and close simultaneously ingot shape of product；
10, unformed hot forging: the product that will be obtained after 9 hot forgings carries out annealing 30 minutes at 1250 DEG C, then exists
It is forged on 400kg pneumatic hammer, needs to forge six faces of spindle at this time, keep it all fine and close in all directions.Begin forging temperature
1250 DEG C of degree, forges number 2 times, 900 DEG C of final forging temperature, forges 1~2 time.The step for repeating makes the thickness of spindle (up and down
Distance between face) it is sintered 35%；
11, it is surface-treated: being handled the upper and lower surface for the product that 10 obtain by mechanical means such as milling, plane, mills, it will
The removals such as booty, impurity on two sides are clean；
12, it rolls: the product that 11 obtain being rolled on milling train, when being rolled down to 0.8mm, needs to carry out 1400
DEG C heat treatment, heat treatment time be 60 minutes, after the completion of heat treatment, then be rolled down to the thickness 0.3mm of target plate.
The finished product sampling that the present embodiment is obtained, sampling specification are as follows: long 100mm, width 10mm, thickness 0.3mm, and in temperature
Strength test is done when being 1400 DEG C.Under same stress, composite material high temperature elongation percentage of the present invention is common dispersion-strengtherning
8 times of platinum, are 1.6 times of common platinum, and high temperature service life is 160 times of common platinum.And composite material of the present invention has good forge
Performance is connect, forging welding can be carried out with dispersion intensifying platinum, is forged in the bending part of vessel prepared by the dispersion intensifying platinum of 0.75mm thickness
It connects, service life 4 months herein can be extended.
Claims (14)
1. the preparation method of dispersion intensifying platinum and platinum composite material, it is characterised in that: the following steps are included:
Step 1 prepares dispersion intensifying platinum powder
1.1, vacuum melting: by weight percentage, by 0.01~0.6% disperse means, remaining for alloy platinum material mix and in vacuum
Abundant melting under the conditions of degree < 10Pa, 1750~2000 DEG C of temperature, 8~100KHz of frequency, obtains liquid alloy；
1.2, cast: by the cast molding under an inert gas of step 1.1 gained liquid alloy, cast temperature is 1750~2000
℃；
1.3, powder powder processed: is made in step 1.2 cast molding obtained material；
Step 2 prepares platinum powder end
2.1, it is molten that alloy platinum material induction melting: is carried out to induction under conditions of 3~100KHz of frequency, 1750~2000 DEG C of temperature
Refining, obtains liquid platinum；
2.2, cast: by step 2.1 gained liquid platinum cast molding, cast temperature is 1800~2100 DEG C；
2.3, powder powder processed: is made in step 2.2 cast molding obtained material；
Step 3 prepares dispersion intensifying platinum and platinum composite material
3.1, compound: by step 1.3 and step 2.3 gained powder overlapping tile in sintering mold；
3.2, it is sintered: the powder that step 3.1 is completed is sintered at 1100~1500 DEG C；
3.3, anneal oxidation: step 3.2 obtained material is made annealing treatment at 1100~1400 DEG C；
3.4, hot pressing: step 3.3 obtained material is suppressed at 600~1300 DEG C, 4~100MPa of pressure；
3.5, sizing hot forging: step 3.4 obtained material carries out to annealing 15~60 minutes at 1100~1400 DEG C, then
It is forged on 200~400kg pneumatic hammer from upper and lower surfaces, 1100~1400 DEG C of initial forging temperature, final forging temperature 900~
It 1100 DEG C, forges to a thickness of 50~80% after step 3.4 hot pressing；
3.6, step 3.5 obtained material: being carried out annealing 15~60 minutes by unformed hot forging at 1100~1400 DEG C, so
It is forged on 200~400kg pneumatic hammer from six faces afterwards, 1100~1400 DEG C of initial forging temperature, final forging temperature 900~1100
DEG C, it forges to 40% or less with a thickness of step 3.2 sintering obtained material thickness；
3.7, it is surface-treated: the foul on step 3.6 obtained material surface, impurity being removed clean；
3.8, it rolls: step 3.7 obtained material is rolled, in distance objective 0.3~0.8mm of thickness, 1200~
It is heat-treated 15~60 minutes at 1400 DEG C, after heat treatment, then is rolled down to target thickness.
2. the preparation method of dispersion intensifying platinum according to claim 1 and platinum composite material, it is characterised in that: step 1.1
In, the disperse means are at least one of zirconium, yttrium, calcium, lanthanum or titanium；Or the alloy that zirconium, yttrium, calcium, lanthanum or titanium and platinum are formed.
3. the preparation method of dispersion intensifying platinum according to claim 1 and platinum composite material, it is characterised in that: step 1.1
In, the smelting time is 1~2 hour.
4. the preparation method of dispersion intensifying platinum according to claim 1 and platinum composite material, it is characterised in that: step 2.1
In, the smelting time is 1~2 hour.
5. the preparation method of dispersion intensifying platinum according to claim 1 and platinum composite material, it is characterised in that: step 1.3
In, the granularity of the powder is 500 μm of <.
6. the preparation method of dispersion intensifying platinum according to claim 1 and platinum composite material, it is characterised in that: step 2.3
In, the granularity of the powder is 500 μm of <.
7. the preparation method of dispersion intensifying platinum according to claim 1 and platinum composite material, it is characterised in that: step 3.1
In, the platinum powder accounts for the 5~95% of platinum powder and dispersion-strengtherning platinum powder total weight.
8. the preparation method of dispersion intensifying platinum according to claim 1 and platinum composite material, it is characterised in that: step 3.2
In, the sintering is carried out at vacuum degree < 10Pa；Or carried out under inert gas shielding, protective gas pressure be 10~
300Pa。
9. the preparation method of dispersion intensifying platinum according to claim 1 and platinum composite material, it is characterised in that: step 3.2
In, the sintering time is 1~5 hour.
10. the preparation method of dispersion intensifying platinum according to claim 9 and platinum composite material, it is characterised in that: step 3.2
In, the sintering time is 3~4 hours.
11. the preparation method of dispersion intensifying platinum according to claim 1 and platinum composite material, it is characterised in that: step 3.3
In, the annealing time is 1~24 hour.
12. the preparation method of dispersion intensifying platinum according to claim 11 and platinum composite material, it is characterised in that: step
In 3.3, the annealing time is 6~12 hours.
13. the preparation method of dispersion intensifying platinum according to claim 1 and platinum composite material, it is characterised in that: step 3.4
In, the pressing time is 1~2 hour.
14. being prepared more by the preparation method of any one of claim 1~13 dispersion intensifying platinum and platinum composite material
It dissipates and strengthens platinum and platinum composite material.
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