CN110129687A - A kind of rare earth modified ferrite and ultrasonic probe of anti-ultrasonic cavitation corrosion - Google Patents
A kind of rare earth modified ferrite and ultrasonic probe of anti-ultrasonic cavitation corrosion Download PDFInfo
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- CN110129687A CN110129687A CN201910477290.1A CN201910477290A CN110129687A CN 110129687 A CN110129687 A CN 110129687A CN 201910477290 A CN201910477290 A CN 201910477290A CN 110129687 A CN110129687 A CN 110129687A
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- 230000007797 corrosion Effects 0.000 title claims abstract description 53
- 238000005260 corrosion Methods 0.000 title claims abstract description 53
- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 45
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 45
- 229910000859 α-Fe Inorganic materials 0.000 title claims abstract description 43
- 239000000523 sample Substances 0.000 title claims abstract description 36
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 22
- 239000011651 chromium Substances 0.000 claims abstract description 22
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 21
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052684 Cerium Inorganic materials 0.000 claims abstract description 11
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052746 lanthanum Inorganic materials 0.000 claims abstract description 11
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 11
- 229910052727 yttrium Inorganic materials 0.000 claims abstract description 11
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052742 iron Inorganic materials 0.000 claims abstract description 10
- 238000002604 ultrasonography Methods 0.000 claims description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 6
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 6
- 239000005864 Sulphur Substances 0.000 claims description 6
- 229910052748 manganese Inorganic materials 0.000 claims description 6
- 239000011572 manganese Substances 0.000 claims description 6
- 229910052750 molybdenum Inorganic materials 0.000 claims description 6
- 239000011733 molybdenum Substances 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 description 25
- 229910001069 Ti alloy Inorganic materials 0.000 description 9
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 239000013078 crystal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 241001417490 Sillaginidae Species 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000010574 gas phase reaction Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
- B01J19/10—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing sonic or ultrasonic vibrations
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The present invention proposes a kind of rare earth modified ferrite of anti-ultrasonic cavitation corrosion, by mass percentage, including following components, the carbon of 0.006-0.1%, the chromium of 3.5-35%, the nickel of 0.5-25%, the cerium of 0.003-1%, the rare-earth yttrium of 1-7.5%, the Rare Earth Lanthanum and balance iron of 0.01-0.5%.The present invention also proposes ultrasonic probe made of a kind of rare earth modified ferrite corroded the anti-ultrasonic cavitation.With excellent corrosion resistance and preferable anti intercrystalline corrosion performance and excellent cold and hot working and processability, rupture life is greatly extended, is suitable for ultrasonic liquid and handles.Solve the problems, such as that existing ultrasonic probe is answering ultrasonic operation process cavitation corrosion serious.
Description
Technical field
The present invention relates to the rare earth modified ferrites and ultrasonic probe of a kind of anti-ultrasonic cavitation corrosion.
Background technique
Traditional metal is easy to be corroded in the state of high temperature pressurized, and metal hardness higher such as stainless steel, titanium close
Gold etc. are all.For energy-gathered ultrasonic vibrating head in application for the treatment of, the ultrasonic wave that probe radiation end face issues drives liquid
Body vibrates and generates ten hundreds of micro-bubbles, i.e. cavitation bubble.The negative pressuren zone that these bubbles are formed in ultrasonic wave longitudinal propagation
Growth, and in zone of positive pressure rapid closing, to be compressed and be stretched under alternately positive and negative pressure.It is compressed up to and collapses in bubble
It is routed to generate huge instantaneous pressure in a flash, it generally may be up to tens megapascal to megapascal up to a hundred.
Cavitation can make the temperature in gas phase reaction area reach 5200K or so, and the effective temperature in liquid phase reactor area reaches the left side 1900K
The right side, for local pressure in 5.05 × 10kPa, rate of temperature change is up to 10K/s, and reaches 400km with strong shock wave and speed per hour
Microjet.This huge instantaneous pressure, can make the surface of solids to float on a liquid or ultrasound emission end plane metal by
Cause to corrode (hereinafter referred to as cavitation corrosion) to the ultrasound cavitation effect of destruction-i.e. sharply.Therefore, the service life of ultrasound emission end face
It is very restricted.And the service life of ultrasound emission end face depends primarily on the metal material of ultrasound emission end face, current ultrasound
The metal that emitting facet uses, the mostly metal materials such as aluminium, stainless steel, titanium alloy, up to the present these materials all cannot be very
This problem is solved well, the ultrasound emission end face of these metals manufacture, all can be when using shorter due to the limitation of its attribute
Interior serious cavitation corrosion occur, if ultrasonic amplitude is at 50 μm or more, cavitation corrosion is even more serious, and cavitation corrosion goes out
The existing time it is longer generally in 15 days and the time it is shorter then only have several days even a few houres, since cavitation corrosion makes ultrasonic hair
Ultrasonic effect miopragia or even the forfeiture of end face are penetrated, thus, how to solve the difficulty that resistance to ultrasonic cavitation corrosion is ultrasonic applications
Topic, and determine the watershed of ultrasonic applications range.The range of ultrasonic applications is very extensive, including welding, cutting and
Detection etc., however domestic ultrasonic wave is still at an early stage in terms of application for the treatment of, ultrasonic liquid processing is one
Very wide field, such as Refining Chemical Industry, pharmaceuticals industry, environmental protection industry (epi), and ultrasonic technology industrial application is required very high
Field bring very big influence, ultrasound hair to its extensive use but due to being limited by ultrasound emission end plane metal material
Penetrate end face service life determine ultrasonic wave in terms of liquid handling can large-scale application, can by ultrasonic technology well with
Other technologies, which combine, is applied to broader scope, if the service life of ultrasound emission end face is not able to satisfy and industrialized wants substantially
It asks, significant limitation will be brought to ultrasonic applications.
Summary of the invention
To solve the problems, such as that existing ultrasonic probe is answering ultrasonic operation process cavitation corrosion serious, the present invention proposes one kind
The rare earth modified ferrite and ultrasonic probe of anti-ultrasonic cavitation corrosion, with excellent corrosion resistance and preferable anti-intergranular
Corrosive nature and excellent cold and hot working and processability, greatly extend rupture life, are suitable for various ultrasonic liquids
Processing.Concrete scheme is as follows:
The present invention proposes a kind of rare earth modified ferrite of anti-ultrasonic cavitation corrosion, by mass percentage, including following components,
The carbon of 0.006-0.1%, the chromium of 3.5-35%, the nickel of 0.5-25%, the cerium of 0.003-1%, the rare-earth yttrium of 1-7.5%, 0.01-
0.5% Rare Earth Lanthanum and balance iron.
Preferably, the rare earth modified ferrite of the anti-ultrasonic cavitation corrosion, by mass percentage, including following components,
The carbon of 0.006-0.1%, the chromium of 9-25%, the nickel of 4-16%, the cerium of 0.003-1%, the rare-earth yttrium of 1-7.5%, 0.01-0.5%
Rare Earth Lanthanum and balance iron.
Further, by mass percentage, further include 0.1-7% manganese and 0.5-3% molybdenum.
It further, by mass percentage, further include the nitrogen of 0.05-1.5%.
It further, by mass percentage, further include the silicon of 0.05-5%.
Further, by mass percentage, the content of sulphur is no more than 0.01%.
The present invention also proposes a kind of ultrasonic probe, the rare earth that ultrasonic wave emitting facet is corroded by above-mentioned anti-ultrasonic cavitation
Modified ferrite is made.
Further, the ultrasonic wave emitting facet is coated with hard chromium layers, the hard chromium layers with a thickness of 1-45 microns.
Beneficial effects of the present invention are as follows:
The present invention produces modified ferrite by the way that rare earth is added in the ferrite material with C, Cr, Ni element is smelted,
The addition of middle cerium, lanthanum and yttrium is excellent desulfurizing agent in this ferrite system, can reduce the impurity member of crystal boundary
Element purifies crystal boundary, improves corrosion resistance, inoxidizability, anti intercrystalline corrosion and pitting corrosion；It especially highlights ferrite to high temperature
The improvement of Creep Plastic performance, enhancing elevated temperature tensile stretch intensity and ductility, make grain-boundary crack tip stress concentrate be easy because
Deformation and relax, crackle is difficult to extend, to greatly extend rupture life.
In addition, lower carbon content subtracts the carbide being precipitated in emitting facet by high temperature in the ferrite system
To minimum, it will effectively cause ferrite to generate intercrystalline corrosion in ultrasonic operating environment because of the precipitation of carbide and minimize
Level.
Therefore ultrasonic probe is made in the rare earth modified ferrite of anti-ultrasonic cavitation corrosion proposed by the present invention, have excellent
Corrosion resistance and preferable anti intercrystalline corrosion performance and excellent cold and hot working and processability, greatly extend and resolve
The service life is split, is suitable for various ultrasonic liquids and handles.It is specific:
The cavitation corrosion that the rare earth modified ferrite of anti-ultrasonic cavitation corrosion of the invention encounters ultrasonic wave is automatic as water
Fusion automatically fill up repair ultrasound emission end face corrosion cavity, although the cavitation corrosion of ultrasonic wave such as knife, but cut constantly like
The performance of the same ferrite of water, its anti-cavitation of the ultrasound emission end face corrosion manufactured with the ferrite will greatly promote, and lead to
Experiment is crossed it is found that the ultrasonic activation that ferrite of the invention manufactures is popped one's head in application for the treatment of, ultrasound emission end face exists
Using being all not in the process for a long time cavitation corrosion, test shows that ultrasonic amplitude at 100 μm or more, uses 1 year
(3000 hours or more) are all not in serious cavitation corrosion in half, greatly widen the application range of ultrasonic wave.In addition root
According to the ferritic attribute, can also be used as the application material of other related anti-cavitation corrosion, except the anti-cavitation corrosion of ultrasonic wave with
Outer other industry, such as mechanical equipment, chemical reaction kettle, oil treatment provisions need the flexible application aspect of metal.
Detailed description of the invention
Fig. 1 is the end view drawing before the test of titanium alloy TC 4 ultrasonic probe.
Fig. 2 is the end view drawing after the test run of titanium alloy TC 4 ultrasonic probe 8 hours.
Fig. 3 is the end view drawing after the test run of titanium alloy TC 4 ultrasonic probe 32 hours.
Fig. 4 is the end view drawing before the test of titanium alloy T C11 ultrasonic probe.
Fig. 5 is the end view drawing after the test run of titanium alloy T C11 ultrasonic probe 8 hours.
Fig. 6 is the end view drawing after the test run of titanium alloy T C11 ultrasonic probe 32 hours.
Fig. 7 is the end view drawing before the test of ultrasonic probe made of ferrite of the invention.
Fig. 8 is the end view drawing after ultrasonic probe made of ferrite of the invention is run 500 hours.
Fig. 9 is the end view drawing after ultrasonic probe made of ferrite of the invention is run 1000 hours.
Figure 10 is the end view drawing before the ultrasonic probe test of Hard Chromium Coating made of ferrite of the invention.
Figure 11 is the side view after ultrasonic probe test run 72 hours of Hard Chromium Coating made of ferrite of the invention
Figure.
Figure 12 is the end after ultrasonic probe test run 1000 hours of Hard Chromium Coating made of ferrite of the invention
Face figure.
Figure 13 is the end after ultrasonic probe test run 2000 hours of Hard Chromium Coating made of ferrite of the invention
Face figure.
Figure 14 is the end after ultrasonic probe test run 3000 hours of Hard Chromium Coating made of ferrite of the invention
Face figure.
Specific embodiment
As follows in conjunction with attached drawing, application scheme is further described:
A kind of rare earth modified ferrite of anti-ultrasonic cavitation corrosion, by mass percentage, including following components, 0.006-0.1%'s
Carbon, the chromium of 3.5-35%, the nickel of 0.5-25%, the cerium of 0.003-1%, the rare-earth yttrium of 1-7.5%, the Rare Earth Lanthanum of 0.01-0.5%,
And balance iron.
Preferably, the rare earth modified ferrite of the anti-ultrasonic cavitation corrosion, by mass percentage, including following components,
The carbon of 0.006-0.1%, the chromium of 9-25%, the nickel of 4-16%, the cerium of 0.003-1%, the rare-earth yttrium of 1-7.5%, 0.01-0.5%
Rare Earth Lanthanum and balance iron.
Further, by mass percentage, further include 0.1-7% manganese and 0.5-3% molybdenum, the nitrogen of 0.05-1.5%,
The silicon of 0.05-5%, wherein the content of sulphur is no more than 0.01%.
Embodiment one
A kind of rare earth modified ferrite of anti-ultrasonic cavitation corrosion, by mass percentage, including following components, 0.008% carbon,
9% chromium, 4% nickel, 0.005% cerium, 1% rare-earth yttrium, 0.05% Rare Earth Lanthanum, 0.15% manganese and 0.5% molybdenum,
0.08% nitrogen, 0.05% silicon and balance iron, wherein the content of sulphur is no more than 0.01%.
Embodiment two
A kind of rare earth modified ferrite of anti-ultrasonic cavitation corrosion, by mass percentage, including following components, 0.05% carbon,
17% chromium, 9% nickel, 0.2% cerium, 5.5% rare-earth yttrium, 0.25% Rare Earth Lanthanum, 1% manganese and 1.5% molybdenum, 0.8%
Nitrogen, 1% silicon and balance iron, wherein the content of sulphur be no more than 0.01%.
Embodiment three
A kind of rare earth modified ferrite of anti-ultrasonic cavitation corrosion, by mass percentage, including following components, 0.09% carbon,
25% chromium, 16% nickel, 1% cerium, 7.5% rare-earth yttrium, 0.5% Rare Earth Lanthanum, 7% manganese and 3% molybdenum, 1.5% nitrogen,
5% silicon and balance iron, wherein the content of sulphur is no more than 0.01%.
Example IV
The rare earth modified ferrite that the anti-ultrasonic cavitation of above-described embodiment is corroded is by above-mentioned recipe ingredient according to existing iron element
Preparation process smelts molding (carbon is dissolved in the interstitial solid solution in α-Fe), is reprocessed into ultrasonic probe.
Embodiment five
In the emitting facet Hard Chromium Coating of the ultrasonic probe of above-described embodiment four, the hard chromium layers with a thickness of 35 microns.Plating
Hardness after hard chrome is converted into HRC between 65-72 in 900-1100HV().
Measure of merit:
The ultrasonic probe of example IV and embodiment five and ultrasonic probe made of titanium alloy TC 4, TC11 are compared
Test is tested and is carried out in 100 μm or more of ultrasonic liquid processing operating environment in ultrasonic amplitude, referring to attached drawing 1-14
(wherein example IV and five selection of the embodiment ultrasonic probe made of the ferrite formula of embodiment two are shown, figure
Middle circular portion is the end face of ultrasonic probe), test result are as follows:
1, the case where common titanium alloy TC 4, TC11 be in ultrasonic liquid treatment process, and there have been cavitation corrosions in 8 hours,
As shown in Figure 2 and Figure 5, smooth end face starts spot corrosion occur；Post-etching situation is serious within 32 hours, as shown in Figure 3 and Figure 6, point
Erosion expands, and part connects in blocks.
2, before testing, the ultrasonic probe end face of example IV is smooth glossy.500 hours end faces are carried out in test to remain unchanged
It is smooth, as shown in Figure 8；It is opposed flattened in 1000 hours end faces of test progress, there is subtle spot corrosion, as shown in Figure 9.
3, before testing, the ultrasonic probe end face of embodiment five is smooth, as shown in Figure 10.After test carries out 72 hours,
The ultrasonic probe end face of embodiment five is smooth, whole to have gloss, as shown in Fig. 11.1000 hours its ends are carried out in test
Face is still smooth, as shown in figure 12, is not completely dried from test liquid there are highlights and dark portion for ultrasonic probe in figure
State.It is still smooth in 2000 hours its end faces of test progress, as shown in figure 13, and visible metallic luster under drying regime.?
After test carries out 3000 hours, there is the lines to tarnish and a small amount of spot corrosion, as shown in figure 14, but do not influence to continue to make
With.
To sum up test result, the present invention have excellent corrosion resistance and preferable anti intercrystalline corrosion performance and excellent
Cold and hot working and processability, greatly extend rupture life, be suitable for various ultrasonic liquids handle.Ultrasonic amplitude
At 100 μm or more, the use of (3000 hours or more) in a year and a half is all not in serious cavitation corrosion, greatly widens super
The application range of sound wave.
It is that above-mentioned preferred embodiment should be regarded as application scheme embodiment for example, all with application scheme thunder
Same, approximate or technology deduction, replacement, improvement for making based on this etc., are regarded as the protection scope of this patent.
Claims (8)
1. a kind of rare earth modified ferrite of anti-ultrasonic cavitation corrosion, which is characterized in that by mass percentage, including with the following group
Point, the carbon of 0.006-0.1%, the chromium of 3.5-35%, the nickel of 0.5-25%, the cerium of 0.003-1%, the rare earth of 1-7.5%
Yttrium, the Rare Earth Lanthanum and balance iron of 0.01-0.5%.
2. the rare earth modified ferrite of anti-ultrasonic cavitation corrosion according to claim 1, which is characterized in that press quality percentage
Than, including following components, the carbon of 0.006-0.1%, the chromium of 9-25%, the nickel of 4-16%, the cerium of 0.003-1%, 1-
7.5% rare-earth yttrium, the Rare Earth Lanthanum and balance iron of 0.01-0.5%.
3. the rare earth modified ferrite of anti-ultrasonic cavitation corrosion according to claim 1 or 2, which is characterized in that press quality
Percentage further includes the manganese of 0.1-7% and the molybdenum of 0.5-3%.
4. the rare earth modified ferrite of anti-ultrasonic cavitation corrosion according to claim 3, which is characterized in that press quality percentage
Than further including the nitrogen of 0.05-1.5%.
5. the rare earth modified ferrite of anti-ultrasonic cavitation corrosion according to claim 3, which is characterized in that press quality percentage
Than further including the silicon of 0.05-5%.
6. the rare earth modified ferrite of anti-ultrasonic cavitation corrosion according to claim 3, which is characterized in that press quality percentage
Than the content of sulphur is no more than 0.01%.
7. a kind of ultrasonic probe, which is characterized in that its ultrasonic wave emitting facet is by anti-ultrasound described in any one of claims 1-6
The rare earth modified ferrite of cavitation corrosion is made.
8. ultrasonic probe according to claim 7, which is characterized in that the ultrasonic wave emitting facet is coated with hard chromium layers, institute
State hard chromium layers with a thickness of 1-45 microns.
Priority Applications (1)
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0949066A (en) * | 1995-08-09 | 1997-02-18 | Sumitomo Metal Ind Ltd | Ferritic stainless steel for absorbing thermal neutron |
| CN1924058A (en) * | 2005-08-30 | 2007-03-07 | 中国科学院金属研究所 | Rich rare earth stainless steel with excellent anti-bacterium capability |
| CN101186991A (en) * | 2007-12-14 | 2008-05-28 | 山东泰山钢铁集团有限公司 | Pellet chain grate sintering machine high carbon high chrome heat-resistant cast iron grate preparation method |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0949066A (en) * | 1995-08-09 | 1997-02-18 | Sumitomo Metal Ind Ltd | Ferritic stainless steel for absorbing thermal neutron |
| CN1924058A (en) * | 2005-08-30 | 2007-03-07 | 中国科学院金属研究所 | Rich rare earth stainless steel with excellent anti-bacterium capability |
| CN101186991A (en) * | 2007-12-14 | 2008-05-28 | 山东泰山钢铁集团有限公司 | Pellet chain grate sintering machine high carbon high chrome heat-resistant cast iron grate preparation method |
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