CN103979567B - A kind of low-temperature growth CrB or CrB 2the method of powder - Google Patents
A kind of low-temperature growth CrB or CrB 2the method of powder Download PDFInfo
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- CN103979567B CN103979567B CN201410219062.1A CN201410219062A CN103979567B CN 103979567 B CN103979567 B CN 103979567B CN 201410219062 A CN201410219062 A CN 201410219062A CN 103979567 B CN103979567 B CN 103979567B
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- 239000000843 powder Substances 0.000 title claims abstract description 97
- 238000000034 method Methods 0.000 title claims abstract description 23
- 150000003839 salts Chemical class 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 238000007669 thermal treatment Methods 0.000 claims abstract description 9
- 239000011261 inert gas Substances 0.000 claims abstract description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical group [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 18
- 239000011780 sodium chloride Substances 0.000 claims description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 8
- 238000009837 dry grinding Methods 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 8
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
- 239000011812 mixed powder Substances 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 abstract description 5
- 239000000919 ceramic Substances 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 238000000576 coating method Methods 0.000 abstract description 3
- 238000002360 preparation method Methods 0.000 abstract description 3
- 238000003786 synthesis reaction Methods 0.000 abstract description 3
- 238000010923 batch production Methods 0.000 abstract description 2
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 abstract 2
- 239000006227 byproduct Substances 0.000 abstract 1
- 239000011651 chromium Substances 0.000 description 20
- 239000012153 distilled water Substances 0.000 description 12
- 239000012071 phase Substances 0.000 description 8
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 7
- 239000007789 gas Substances 0.000 description 7
- 238000013019 agitation Methods 0.000 description 6
- 238000003828 vacuum filtration Methods 0.000 description 6
- 238000002441 X-ray diffraction Methods 0.000 description 4
- 229910052796 boron Inorganic materials 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 1
- DPDMMXDBJGCCQC-UHFFFAOYSA-N [Na].[Cl] Chemical group [Na].[Cl] DPDMMXDBJGCCQC-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- HPNSNYBUADCFDR-UHFFFAOYSA-N chromafenozide Chemical compound CC1=CC(C)=CC(C(=O)N(NC(=O)C=2C(=C3CCCOC3=CC=2)C)C(C)(C)C)=C1 HPNSNYBUADCFDR-UHFFFAOYSA-N 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003746 solid phase reaction Methods 0.000 description 1
- 238000003836 solid-state method Methods 0.000 description 1
- 238000010671 solid-state reaction Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000010189 synthetic method Methods 0.000 description 1
Landscapes
- Compositions Of Oxide Ceramics (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
The invention discloses a kind of CrB or CrB
2raw powder's production technology, belongs to ceramic powder preparing technical field.This preparation method is that after the chromic oxide of 1:4 or 1:6 and amorphous boron powder mix with a certain amount of fused salt, under protection of inert gas, at 800 ~ 1100 DEG C, thermal treatment 0.5 ~ 2h obtains CrB or CrB by mol ratio
2powder.The by product boron trioxide that reaction produces and fused salt are removed by infiltrating the method for dissolving with hot water.The inventive method synthesis temperature is low, and synthesis cycle is short, simple, with low cost, the applicable batch production of the production technique of employing.Prepared CrB or CrB
2powder can be used for preparing structural ceramics and wear-resisting, high temperature coatings etc.
Description
Technical field
The invention belongs to ceramic powder preparing technical field, be specifically related to a kind of CrB or CrB
2raw powder's production technology, it can be used for preparing structural ceramics and wear-resisting, high temperature coatings.
Background technology
CrB and CrB
2it is the stone metallic compound of a class, its wear resistance is fabulous, there is excellent high temperature oxidation resistance, below 1300 DEG C, there is good thermal shock resistance, resistance to strong acid and have higher neutron-absorption cross-section, is widely used as neutron absorbing paint in wear-resistant coating, corrosion-resistant finishes, nuclear reactor and the tough phase as metal or ceramic matric composite.
Traditional synthetic method utilizes excessive boric acid and chromic oxide to add carbon black to react in high temperature hydrogen furnace, and its temperature of reaction is high, and energy consumption is large, complex process and products obtained therefrom is stable not.Although the self-propagating combustion energy consumption of follow-up developments is little, pollute large, safety coefficient is little, and required equipment is complicated, and quality product is also unstable.Bao is met congruent people and adopts norbide, chromium metal and carbon-contained additive to be raw material, and the method for being smelted by electrofuse in vacuum resistance furnace has prepared high-purity chromium boride powder, its steady quality (Chinese invention patent application number: 201010606506).But this method temperatures as high 2000-2400 DEG C, improves its production cost undoubtedly.
From the above analysis, current CrB or CrB
2raw powder's production technology ubiquity some shortcomings, significantly limit its range of application.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, provides that a kind of technique is simple, with low cost, prepares CrB or CrB under low temperature
2the method of powder.
In order to solve above technical problem, the present invention is achieved by the following technical programs.
The invention provides one and prepare CrB or CrB
2the method of powder, the method comprises the following steps:
(1) first by chromic oxide (Cr
2o
3), boron (B) powder and fused salt carry out proportioning in proportion, and put into ball mill for dry grinding mixing; Described fused salt is sodium-chlor (NaCl), Repone K (KCl), magnesium chloride (MgCl
2), one or more mixing in lithium chloride (LiCl); The quality of fused salt is Cr
2o
3with 5 ~ 20 times of B powder total mass; When preparing CrB, Cr
2o
3be 1:4 with the mol ratio of B powder; As preparation CrB
2time, Cr
2o
3be 1:6 with the mol ratio of B powder;
(2) mixed powder that step (1) obtains is put into alumina crucible, naturally cooling after thermal treatment for some time under protection of inert gas, obtain CrB (or CrB
2), B
2o
3with the mixture of fused salt; Described thermal treatment temp is 800 ~ 1100 DEG C, and the treatment time is 0.5 ~ 2h;
(3) mixture that step (2) obtains is put into the deionized water of 60 ~ 90 DEG C and stirred, as the B that reaction generates
2o
3and after fused salt dissolves, be precipitated thing by filtering separation, this throw out can be obtained after washing, alcohol wash, drying CrB (or CrB
2) powder.
When preparing CrB powder, as one optimization, the fused salt in described step (1) be NaCl and KCl in molar ratio 1:1 carry out the mixture that proportioning obtains, the quality of this fused salt is Cr
2o
3with 10 times of B powder total mass, Cr
2o
3be 1:4 with the mol ratio of B powder; Described step (2) thermal treatment temp is 900 DEG C, and heat treatment time is 1h; Deionized water temperature in described step (3) is 60 DEG C.
At preparation CrB
2during powder, as one optimization, the fused salt in described step (1) be NaCl and KCl in molar ratio 1:1 carry out the mixture that proportioning obtains, the quality of this fused salt is Cr
2o
3with 10 times of B powder total mass, Cr
2o
3be 1:6 with the mol ratio of B powder; Described step (2) thermal treatment temp is 900 DEG C, and heat treatment time is 1h; Deionized water temperature in described step (3) is 60 DEG C.
Compared with prior art, the present invention has following technique effect.
(1) present invention process is simple, without the need to the moulding process needed for conventional solid-state method, without the need to specific installation, is applicable to batch production.
(2) the present invention prepares CrB or CrB by improving traditional boron thermal reduction method
2powder.The hot method of traditional boron is solid state reaction, and material rate of diffusion is comparatively slow, and general requirement B is excessive could completely by the Cr in raw material
2o
3react completely.Meanwhile, for obtaining pure phase CrB or CrB
2, must allow excessive B and resultant B in early stage
2o
3reaction generates gas phase B
2o
2, and this needs the pyroprocessing of more than 1500 DEG C, corresponding reaction equation is 2Cr
2o
3+ 10B=4CrB+3B
2o
2or 2Cr
2o
3+ 14B=4CrB
2+ 3B
2o
2.In the present invention, the reaction environment of a liquid phase to be provided to solid matter by adding fused salt, to accelerate the diffusion of material, without the need to B is excessive just can completely by Cr
2o
3react completely.In the present invention, Cr is worked as
2o
3just CrB or CrB can be obtained when being 1:4 or 1:6 with the mol ratio of B
2pure phase, corresponding reaction equation is Cr
2o
3+ 4B=2CrB+B
2o
3or Cr
2o
3+ 6B=2CrB
2+ B
2o
3, the B that reaction generates
2o
3by the method stripping that hot water infiltrates.Compare traditional boron thermal reduction method, B raw materials cost reduces 20% and 14.3% respectively.In addition, the introducing of fused salt significantly reduces temperature of reaction, shortens the reaction times, significantly reduces production energy consumption.
(3) in the present invention, on the one hand because synthesis temperature is only 800 ~ 1000 DEG C, fused salt is to generated CrB or CrB on the other hand
2particle has certain iris action, and grain growth is suppressed, gained CrB or CrB
2powder median size is less than 0.5 μm.
Accompanying drawing explanation
Fig. 1 is X-ray diffraction (XRD) collection of illustrative plates of the CrB powder that embodiment 1 obtains.
Fig. 2 is scanning electronic microscope (SEM) photo of the CrB powder that embodiment 1 obtains.
Fig. 3 is the CrB that embodiment 2 obtains
2x-ray diffraction (XRD) collection of illustrative plates.
Fig. 4 is the CrB that embodiment 1 obtains
2scanning electronic microscope (SEM) photo of powder.
Embodiment
In order to understand technology contents of the present invention further, below in conjunction with drawings and Examples in detail the present invention is described in detail, but the present invention is not limited to following embodiment.
Embodiment 1
By chromic oxide (Cr
2o
3) obtain powder 1 for the ratio of 1:4 carries out proportioning in molar ratio with amorphous B powder; NaCl and KCl is obtained powder 2 for the ratio of 1:1 carries out proportioning in molar ratio; The ratio of powder 1 and powder 2 1:10 is in mass ratio obtained powder 3 after ball mill for dry grinding mixes 1h; Powder 3 is placed in alumina crucible, under flowing Ar gas shielded, is heated to 900 DEG C and is incubated 1h, after naturally cooling to room temperature, obtaining powder 4; Powder 4 to be immersed in 60 DEG C of distilled water and Keep agitation 1h, be separated through vacuum filtration and be precipitated thing; By throw out with after 60 DEG C of distilled water washs twice with washing with alcohol once, obtain CrB powder after 60 DEG C of dry 8h.
The XRD figure spectrum of Fig. 1 CrB powder prepared by the present embodiment, this collection of illustrative plates shows, prepared CrB powder is pure phase, does not have other impurity phase.The SEM photo of Fig. 2 CrB powder prepared by the present embodiment, can find out, its grain-size is less, and median size is less than 0.5 μm.
Embodiment 2
By chromic oxide (Cr
2o
3) obtain powder 1 for the ratio of 1:6 carries out proportioning in molar ratio with amorphous B powder; NaCl and KCl is obtained powder 2 for the ratio of 1:1 carries out proportioning in molar ratio; The ratio of powder 1 and powder 2 1:10 is in mass ratio obtained powder 3 after ball mill for dry grinding mixes 1h; Powder 3 is placed in alumina crucible, under flowing Ar gas shielded, is heated to 900 DEG C and is incubated 1h, after naturally cooling to room temperature, obtaining powder 4; Powder 4 to be immersed in 60 DEG C of distilled water and Keep agitation 1h, be separated through vacuum filtration and be precipitated thing; By throw out with after 60 DEG C of distilled water washs twice with washing with alcohol once, obtain CrB after 60 DEG C of dry 8h
2powder.
Fig. 3 is CrB prepared by the present embodiment
2the XRD figure spectrum of powder, this collection of illustrative plates shows, prepared CrB
2powder is pure phase, does not have other impurity phase.Fig. 4 is CrB prepared by the present embodiment
2the SEM photo of powder, can find out, its grain-size is less, median size is less than 0.5 μm.
Embodiment 3
By chromic oxide (Cr
2o
3) obtain powder 1 for the ratio of 1:4 carries out proportioning in molar ratio with amorphous B powder; The ratio of powder 1 and LiCl 1:20 is in mass ratio obtained powder 2 after ball mill for dry grinding mixes 1h; Powder 2 is placed in alumina crucible, under flowing Ar gas shielded, is heated to 800 DEG C and is incubated 2h, after naturally cooling to room temperature, obtaining powder 3; Powder 3 to be immersed in 80 DEG C of distilled water and Keep agitation 1h, be separated through vacuum filtration and be precipitated thing; By throw out with after 80 DEG C of distilled water washs twice with washing with alcohol once, obtain CrB powder after 60 DEG C of dry 8h.
Embodiment 4
By chromic oxide (Cr
2o
3) obtain powder 1 for the ratio of 1:6 carries out proportioning in molar ratio with amorphous B powder; By powder 1 and MgCl
2the ratio of 1:20 obtains powder 2 after ball mill for dry grinding mixing 1h in mass ratio; Powder 2 is placed in alumina crucible, under flowing Ar gas shielded, is heated to 800 DEG C and is incubated 2h, after naturally cooling to room temperature, obtaining powder 3; Powder 3 to be immersed in 80 DEG C of distilled water and Keep agitation 1h, be separated through vacuum filtration and be precipitated thing; By throw out with after 80 DEG C of distilled water washs twice with washing with alcohol once, obtain CrB after 60 DEG C of dry 8h
2powder.
Embodiment 5
By chromic oxide (Cr
2o
3) obtain powder 1 for the ratio of 1:4 carries out proportioning in molar ratio with amorphous B powder; The ratio of powder 1 and KCl 1:5 is in mass ratio obtained powder 2 after ball mill for dry grinding mixes 1h; Powder 2 is placed in alumina crucible, under flowing Ar gas shielded, is heated to 1100 DEG C and is incubated 0.5h, after naturally cooling to room temperature, obtaining powder 3; Powder 3 to be immersed in 90 DEG C of distilled water and Keep agitation 1h, be separated through vacuum filtration and be precipitated thing; By throw out with after 90 DEG C of distilled water washs twice with washing with alcohol once, obtain CrB powder after 60 DEG C of dry 8h.
Embodiment 6
By chromic oxide (Cr
2o
3) obtain powder 1 for the ratio of 1:6 carries out proportioning in molar ratio with amorphous B powder; The ratio of powder 1 and NaCl 1:5 is in mass ratio obtained powder 2 after ball mill for dry grinding mixes 1h; Powder 2 is placed in alumina crucible, under flowing Ar gas shielded, is heated to 1100 DEG C and is incubated 0.5h, after naturally cooling to room temperature, obtaining powder 3; Powder 3 to be immersed in 90 DEG C of distilled water and Keep agitation 1h, be separated through vacuum filtration and be precipitated thing; By throw out with after 90 DEG C of distilled water washs twice with washing with alcohol once, obtain CrB after 60 DEG C of dry 8h
2powder.
Claims (3)
1. low-temperature growth CrB or CrB
2the method of powder, is characterized in that, the method comprises the following steps:
(1) first by Cr
2o
3, B powder and fused salt carry out proportioning in proportion, and put into ball mill for dry grinding mixing; Described fused salt is NaCl, KCl, MgCl
2, one or more mixing in LiCl; The quality of fused salt is Cr
2o
3with 5 ~ 20 times of B powder total mass; Cr
2o
3be 1:4 or 1:6 with the mol ratio of B powder;
(2) mixed powder that step (1) obtains is put into alumina crucible, under protection of inert gas, naturally cooling after thermal treatment, obtains B
2o
3, fused salt and CrB or CrB
2mixture; Described thermal treatment temp is 800 ~ 1100 DEG C, and heat treatment time is 0.5 ~ 2h;
(3) mixture that step (2) obtains is put into the deionized water of 60 ~ 90 DEG C and stirred, as the B that reaction generates
2o
3and after fused salt dissolving, be precipitated thing by filtering separation, this throw out can be obtained CrB or CrB after washing, alcohol wash, drying
2powder.
2. the method for a kind of low-temperature growth CrB powder as claimed in claim 1, is characterized in that, the fused salt in described step (1) be NaCl and KCl in molar ratio 1:1 carry out the mixture that proportioning obtains, the quality of this fused salt is Cr
2o
3with 10 times of B powder total mass, Cr
2o
3be 1:4 with the mol ratio of B powder; Described step (2) thermal treatment temp is 900 DEG C, and heat treatment time is 1h; Deionized water temperature in described step (3) is 60 DEG C.
3. a kind of low-temperature growth CrB as claimed in claim 1
2the method of powder, is characterized in that, the fused salt in described step (1) be NaCl and KCl in molar ratio 1:1 carry out the mixture that proportioning obtains, the quality of this fused salt is Cr
2o
3with 10 times of B powder total mass, Cr
2o
3be 1:6 with the mol ratio of B powder; Described step (2) thermal treatment temp is 900 DEG C, and heat treatment time is 1h; Deionized water temperature in described step (3) is 60 DEG C.
Priority Applications (1)
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|---|---|---|---|
| CN201410219062.1A CN103979567B (en) | 2014-05-22 | 2014-05-22 | A kind of low-temperature growth CrB or CrB 2the method of powder |
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|---|---|---|---|
| CN201410219062.1A CN103979567B (en) | 2014-05-22 | 2014-05-22 | A kind of low-temperature growth CrB or CrB 2the method of powder |
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| CN103979567B true CN103979567B (en) | 2015-12-30 |
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| CN105017702A (en) * | 2015-08-21 | 2015-11-04 | 朱明德 | High-density rubber sealing gasket containing nano chromium diboride and preparation method of gasket |
| CN105753005A (en) * | 2016-04-02 | 2016-07-13 | 上海大学 | Method for preparing high-purity quadri-boride manganese (MnB4) with low-temperature solid phase method |
| CN106882815A (en) * | 2017-05-02 | 2017-06-23 | 东北大学 | A kind of wolfram diboride preparation method |
| CN108483459B (en) * | 2018-02-11 | 2020-06-02 | 北京交通大学 | Two-dimensional CrB nano ceramic material and preparation method thereof |
| CN114045546B (en) * | 2021-11-22 | 2023-09-12 | 安徽工业大学 | Method for preparing transition metal boride coating by fused salt in-situ synthesis and electrophoretic deposition |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB861743A (en) * | 1958-10-29 | 1961-02-22 | United States Borax Chem | Method for producing borides |
| CN102009982A (en) * | 2010-12-27 | 2011-04-13 | 鲍迎全 | Producing method for high-purity chromium boride |
| CN102689907A (en) * | 2012-05-30 | 2012-09-26 | 深圳市新星轻合金材料股份有限公司 | Preparing method and application of transition metal boride |
| CN103754871A (en) * | 2013-12-10 | 2014-04-30 | 西北农林科技大学 | Method for preparing Cr7C3/CrB composite powder by utilizing solid-phase reaction diffusion process |
-
2014
- 2014-05-22 CN CN201410219062.1A patent/CN103979567B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB861743A (en) * | 1958-10-29 | 1961-02-22 | United States Borax Chem | Method for producing borides |
| CN102009982A (en) * | 2010-12-27 | 2011-04-13 | 鲍迎全 | Producing method for high-purity chromium boride |
| CN102689907A (en) * | 2012-05-30 | 2012-09-26 | 深圳市新星轻合金材料股份有限公司 | Preparing method and application of transition metal boride |
| CN103754871A (en) * | 2013-12-10 | 2014-04-30 | 西北农林科技大学 | Method for preparing Cr7C3/CrB composite powder by utilizing solid-phase reaction diffusion process |
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