CN105543764A - Infrared radiation metal ceramic powder used for detonation spraying and preparation method of infrared radiation metal ceramic powder - Google Patents
Infrared radiation metal ceramic powder used for detonation spraying and preparation method of infrared radiation metal ceramic powder Download PDFInfo
- Publication number
- CN105543764A CN105543764A CN201510996342.8A CN201510996342A CN105543764A CN 105543764 A CN105543764 A CN 105543764A CN 201510996342 A CN201510996342 A CN 201510996342A CN 105543764 A CN105543764 A CN 105543764A
- Authority
- CN
- China
- Prior art keywords
- powder
- infrared radiation
- metal ceramic
- radiation metal
- ceramic powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Coating By Spraying Or Casting (AREA)
Abstract
The invention discloses infrared radiation metal ceramic powder used for detonation spraying. The infrared radiation metal ceramic powder is formed by preparing materials with a mass ratio of cobalt powder to CoMn2O4 powder to a binding agent being 9-25 to 75-91 to 10-20. The CoMn2O4 powder is of a spinel structure and formed by preparing CoO solid powder and MnO solid powder with a mass ratio of the CoO solid powder to the MnO solid powder being one to two, and the average grain diameter of the CoO solid powder and the MnO solid powder is smaller than 75 [mu]m. The invention further provides a preparation method of the infrared radiation metal ceramic powder. According to the infrared radiation metal ceramic powder provided by the invention, a coating which is deposited on the metal surface through a detonation spraying method has excellent infrared radiation performance. The infrared radiation metal ceramic powder is used for surfaces of heat exchangers such as electronic packaging material radiators and boiler water wall tubes, and rapid heat radiating and heat absorbing can be achieved in an infrared radiation heat transmission mode according to different environment temperatures, so that the heat exchange efficiency is improved.
Description
Technical field
The present invention relates to new material technology field, be specifically related to a kind of ir radiation metal ceramic powder for detonation flame spraying and preparation method thereof.
Background technology
As everyone knows, heat transmission is carried out with conduction, convection current and radiation three kinds of modes.Wherein radiative transfer has speed needs the advantages such as medium soon, not.Instantly, due to electronic package material, as large LED lamp etc., due to the problem of its heat radiation, become the huge obstacle of electronic industry development, force cooling fan to increase conduction and convection rate of heat release mainly through installing fin increasing heat radiation area additional and adopting at present.On the other hand, for the boiler in industrial heating furnace, the heat that water wall tube side towards the fire absorbs is mainly from the heat that furnace wall radiation mode transmits, and then the main water with radiation and heat conducting mode and water wall tube internal flow carries out thermal exchange.The transformation of current boiler energy-saving mainly improves the heat-insulating property of furnace wall refractory to reduce calorific loss, and ignores boiler water-wall tube and participate in the impact on furnace heat transfer and heat exchange of the effect of furnace heat transfer aspect and its surface emissivity performance directly.In addition, the infrared radiation property of metallic substance far below refractory materials, and is closely related with surface appearance.How effectively to improve the blackness of boiler water-wall tube, effectively being shortened the heating-up time of boiler by the conduction exchange capability of heat of strengthening surface radiative transfer and raising water wall tube and be reduced smoke exhaust heat loss, is the important channel of improving boiler heat-energy efficiency of conversion.Ir radiation powder is mainly added organic or inorganic caking agent and is made into coating by the ir radiation clad material realizing engineer applied at present both at home and abroad, is coated on substrate surface by modes such as spraying, roller coat or brushings.Because the thermal resistance of adhesives itself is large, the heat exchange effect of coating is obviously declined.
Summary of the invention
The present invention, in order to the technical problem of the ir radiation clad material heat exchange performance difference of existing engineer applied, proposes a kind of ir radiation metal ceramic powder for detonation flame spraying and preparation method thereof.
The ir radiation metal ceramic powder for detonation flame spraying that the present invention proposes, it is formulated by the material of following masses ratio:
Cobalt powder: CoMn
2o
4powder: caking agent=9 ~ 25:75 ~ 91:10 ~ 20;
Wherein: described CoMn
2o
4powder has spinel structure, and the pressed powder being less than CoO and MnO of 75 μm by median size in mass ratio example is that 1:2 prepares.
The invention allows for a kind of preparation method of ir radiation metal ceramic powder, its step is as follows:
Step 1:CoMn
2o
4the preparation of infrared radiation ceramic material
Select CoO and the MnO pressed powder Homogeneous phase mixing in proportion had stable high-temperature performance, add wet mash cold compaction with water spray and become base substrate, at 1100 DEG C ~ 1150 DEG C high temperature sintering 2h, quench treatment is carried out in taking-up, fragmentation after seasoning is also levigate to less than 30 μm, obtains the CoMn with stable spinel structure
2o
4infrared radiation ceramic material;
Step 2: the preparation of ir radiation metal ceramic powder
By cobalt powder, CoMn
2o
4powder and caking agent Homogeneous phase mixing in proportion, mist projection granulating makes reunion powder, at N
2high temperature Fast Sintering, air cooling under protective atmosphere, after fragmentation, screening, obtain the spherical ir radiation Metal-ceramie powder powder material for detonation flame spraying, particle diameter is 15 ~ 45 μm.
Compared with prior art, advantage of the present invention:
(1) rapid quenching after CoO and the MnO pressed powder high temperature sintering of preferred stable performance under high temperature, can prepare crystal grain tiny and have the CoMn of stable spinel structure
2o
4infrared radiation ceramic material.This material is steady in a long-term more than 0.9 all wave band radiant ratio of 1 ~ 25 μm, can significantly improve the heat exchange efficiency of coating.
(2) thermal conductivity of metal Co is 100W/ (mK), far above silicate inorganic caking agent 1.41W/ (mK) and organic adhesive 0.2W/ (mK), can significantly improve the heat exchange of conduction pattern between coating and base material.There is in coating the CoMn of stable spinel structure
2o
4there is excellent infrared emanation performance.If coating temperature is higher than environment, can by thermal-radiating form quick heat radiating; If envrionment temperature is higher than Coated Surface Temperature, then with the quick absorbing radiation heat of the usefulness of Proximate blackbody, improve substrate material surface temperature.Relative to traditional organic and inorganic adhesive, can reduce because cohesive material introduces the defect causing thermal resistance to increase.And ir radiation metal ceramic powder provided by the invention, the coating prepared by detonation flame spraying mode is very fine and close, and void content, lower than 1%, can reduce in coating due to probability that sealed porosity causes material thermal resistance to increase; And detonation flame spraying is because velocity of particle is up to 800m/s, abundant flattening during particle hits base material, coat-thickness is minimum can be controlled in 3 ~ 5 μm, can reduce further due to the disadvantageous effect of coat-thickness increase to heat by conduction exchange efficiency.Traditional infrared radiation coating material is obviously better than by the coating that it is deposited by detonation flame spraying mode.
(3) because powder grain is tiny and have stable spinel structure, CoMn is used
2o
4ir radiation sintering metal powder adopts the coating of detonation flame spraying process deposits to have the feature of high radiation, high-selenium corn.Coating absorbed heat before this from environment, if coating temperature is higher than environment, and can by thermal-radiating form quick heat radiating.Its typically used is the problem solving the electronic package material heat radiations such as large LED lamp; If envrionment temperature is higher than Coated Surface Temperature, then with the quick absorbing radiation heat of the usefulness of Proximate blackbody, improve substrate material surface temperature.Its typically used, for increasing boiler water-wall tube radiant heat absorbent speed, improves the heat by conduction exchange capacity between water wall tube and water and burner hearth utilization efficiency of heat energy, reduces the heat loss due to exhaust gas of high-temperature flue gas.
Accompanying drawing explanation
Fig. 1 is the ir radiation sintering metal powder electron scanning micrograph adopting the present invention to prepare.
Embodiment
Fig. 1 shows ir radiation sintering metal powder microscopic structure of the present invention.The ir radiation metal ceramic powder for detonation flame spraying that the present invention proposes, it is formulated by the material of following masses ratio:
Cobalt powder: CoMn
2o
4powder: caking agent=9 ~ 25:75 ~ 91:10 ~ 20;
Wherein: described CoMn
2o
4powder has spinel structure, and the pressed powder being less than CoO and MnO of 75 μm by median size in mass ratio example is that 1:2 prepares.Below in conjunction with embodiment, the invention will be further described.
Embodiment 1:
Be CoO and the MnO powder of 20 μm by median size, be that 1:2 carries out Homogeneous phase mixing by its mass ratio, add the water of overall powder quality 5%, adopt spray pattern to add wet mash, the base substrate made and be of a size of 50mm × 30mm × 10mm of colding pressing.By base substrate at 1100 DEG C of high temperature sintering 2h, take out and put into water and carry out quench treatment, broken and levigately obtain the CoMn with stable spinel structure to less than 20 μm after seasoning
2o
4infrared radiation ceramic material.
Then be cobalt powder, the CoMn of 0.1 μm by median size
2o
4powder and Macrogol 2000 are in mass ratio for 25:75:15 mixes, and mist projection granulating makes reunion powder, at N
2protective atmosphere lower 1200 DEG C of Fast Sintering, air coolings, obtain the spherical ir radiation metal ceramic powder for detonation flame spraying after fragmentation, screening, particle diameter is 15 ~ 38 μm.
Adopt detonation flame spraying technique, at thermoelectricity industry BG-75/39-MI type 75 tons of pulverized coal firing boilers, material is 20
#the water wall tube deposited on surface of heat exchanger coat-thickness of steel is about 20 μm, saving coals from boiler more than 7%, and funnel temperature is reduced to 148 DEG C by original 172 DEG C.
Embodiment 2:
Be CoO and the MnO powder of 60 μm by median size, be that 1:2 carries out Homogeneous phase mixing by its mass ratio, add the water of overall powder quality 5%, adopt spray pattern to add wet mash, the base substrate made and be of a size of 50mm × 30mm × 10mm of colding pressing.By base substrate at 1150 DEG C of high temperature sintering 2h, take out and put into water and carry out quench treatment, broken and levigately obtain the CoMn with stable spinel structure to less than 30 μm after seasoning
2o
4infrared radiation ceramic material.Then be cobalt powder, the CoMn of 0.5 μm by median size
2o
4powder and 2% the Walocel MT 20.000PV aqueous solution in mass ratio for 9:91:10 mixes, mist projection granulating makes reunion powder, at N
2protective atmosphere lower 1200 DEG C of Fast Sintering, air coolings, obtain the spherical ir radiation metal ceramic powder for detonation flame spraying after fragmentation, screening, particle diameter is 15 ~ 45 μm.
Adopt detonation flame spraying technique, the coating of 10 μm is about at LED heat-radiating substrate surface deposition thickness, due to coating can fast absorptive substrate heat and carry out heat exchange with radiation mode and physical environment, radiating efficiency improves more than 45%, reduces substrate area of dissipation more than 10% after instead of original radiator fan.
Embodiment 3:
Be CoO and the MnO powder of 40 μm by median size, be that 1:2 carries out Homogeneous phase mixing by its mass ratio, add the water of overall powder quality 5%, adopt spray pattern to add wet mash, the base substrate made and be of a size of 50mm × 30mm × 10mm of colding pressing.By base substrate at 1130 DEG C of high temperature sintering 2h, taking-up is put into water and is carried out quench treatment, broken also levigate to less than 20 μm after seasoning, obtains the CoMn with stable spinel structure
2o
4infrared radiation ceramic material.Then be cobalt powder, the CoMn of 0.3 μm by median size
2o
4powder and 15% polyvinyl alcohol 1799 aqueous solution in mass ratio for 17:83:20 mixes, mist projection granulating makes reunion powder, at N
2protective atmosphere lower 1200 DEG C of Fast Sintering, air coolings, obtain the spherical ir radiation metal ceramic powder for detonation flame spraying after screening, particle diameter is 15 ~ 38 μm.
Adopt detonation flame spraying technique, at pharmaceutical industry DZL4-1.25-AII (SW) type Horizontal type packaged chain grate pulverized coal firing boiler, material is 20
#the water wall tube deposited on surface of heat exchanger thickness of steel is about 10 μm of coatings, saving coals from boiler more than 12%, and funnel temperature is reduced to 164 DEG C by original 230 DEG C, and thermo-efficiency improves 4%.
The foregoing is only preferred embodiment of the present invention, be not limited to this, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1., for an ir radiation metal ceramic powder for detonation flame spraying, it is formulated by the material of following masses ratio:
Cobalt powder: CoMn
2o
4powder: caking agent=9 ~ 25:75 ~ 91:10 ~ 20;
Wherein:
Described CoMn
2o
4powder has spinel structure, and the pressed powder being less than CoO and MnO of 75 μm by median size in mass ratio example is that 1:2 prepares.
2. ir radiation metal ceramic powder as claimed in claim 1, is characterized in that: described cobalt powder is submicron order cobalt powder, and median size is less than 0.5 μm.
3. ir radiation metal ceramic powder as claimed in claim 1, is characterized in that: described caking agent to be molecular-weight average the be polyoxyethylene glycol of 2000, the Walocel MT 20.000PV aqueous solution of 2% or 15% the one of polyvinyl alcohol 1799 aqueous solution.
4. a preparation method for ir radiation metal ceramic powder as claimed in claim 1, its step is as follows:
Step 1:CoMn
2o
4the preparation of infrared radiation ceramic material
Select CoO and the MnO pressed powder Homogeneous phase mixing in proportion had stable high-temperature performance, add wet mash cold compaction with water spray and become base substrate, at 1100 DEG C ~ 1150 DEG C high temperature sintering 2h, quench treatment is carried out in taking-up, fragmentation after seasoning is also levigate to less than 30 μm, obtains the CoMn with stable spinel structure
2o
4infrared radiation ceramic material;
Step 2: the preparation of ir radiation metal ceramic powder
By cobalt powder, CoMn
2o
4powder and caking agent Homogeneous phase mixing in proportion, mist projection granulating makes reunion powder, at N
2high temperature Fast Sintering, air cooling under protective atmosphere, obtain the spherical ir radiation Metal-ceramie powder powder material for detonation flame spraying after fragmentation, screening, particle diameter is 15 ~ 45 μm.
5. preparation method as claimed in claim 4, is characterized in that: in described step 1, when adding wet mash with water spray, adds the water of described CoO and MnO powder quality 5%, colds pressing to make described base substrate and be of a size of 50mm × 30mm × 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510996342.8A CN105543764B (en) | 2015-12-28 | 2015-12-28 | It is a kind of for infra-red radiation metal ceramic powder of detonation flame spraying and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510996342.8A CN105543764B (en) | 2015-12-28 | 2015-12-28 | It is a kind of for infra-red radiation metal ceramic powder of detonation flame spraying and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105543764A true CN105543764A (en) | 2016-05-04 |
| CN105543764B CN105543764B (en) | 2018-06-05 |
Family
ID=55823314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510996342.8A Expired - Fee Related CN105543764B (en) | 2015-12-28 | 2015-12-28 | It is a kind of for infra-red radiation metal ceramic powder of detonation flame spraying and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105543764B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105951029A (en) * | 2016-06-20 | 2016-09-21 | 新昌县七星街道明盛模具厂 | Production process of protecting coating of explosion spraying high-temperature furnace roller |
| CN107445464A (en) * | 2017-09-04 | 2017-12-08 | 咸宁南玻节能玻璃有限公司 | A kind of Low emissivity tempering live-roller gear |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103788849A (en) * | 2012-11-01 | 2014-05-14 | 深圳市润物科技有限公司 | Low-carbon energy-saving coating |
-
2015
- 2015-12-28 CN CN201510996342.8A patent/CN105543764B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103788849A (en) * | 2012-11-01 | 2014-05-14 | 深圳市润物科技有限公司 | Low-carbon energy-saving coating |
Non-Patent Citations (1)
| Title |
|---|
| 税安泽等: "高发射率红外辐射涂料的制备与性能研究", 《人工晶体学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105951029A (en) * | 2016-06-20 | 2016-09-21 | 新昌县七星街道明盛模具厂 | Production process of protecting coating of explosion spraying high-temperature furnace roller |
| CN107445464A (en) * | 2017-09-04 | 2017-12-08 | 咸宁南玻节能玻璃有限公司 | A kind of Low emissivity tempering live-roller gear |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105543764B (en) | 2018-06-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102585571B (en) | Infrared energy-saving coating with anti-corrosion and anti-coking functions and preparation method thereof | |
| CN102219495B (en) | Infrared radiation coating and use method thereof | |
| CN103305039B (en) | Infrared radiation coating, preparation method thereof and infrared radiation coating | |
| CN102675933A (en) | High-temperature resistant absorption enhancement nano coating and preparation method thereof | |
| CN103305040B (en) | Composite infrared radiation paint and preparation method thereof and infrared radiating coating | |
| CN105543764B (en) | It is a kind of for infra-red radiation metal ceramic powder of detonation flame spraying and preparation method thereof | |
| CN101973768A (en) | Thermal-radiating material and fire-resisting material using same | |
| CN107793141A (en) | The preparation method of infrared radiant material | |
| CN201754028U (en) | Fireproof material with hearth radiating element | |
| CN208620880U (en) | A kind of combined high-temperature heat exchanger | |
| CN104860692A (en) | Heat-absorbing coating and preparation method thereof | |
| CN107032735B (en) | Heat insulation coating for boiler, preparation method and construction method | |
| CN201032368Y (en) | Highly effective low oxidization burning loss aluminum alloy centralized liquation furnace | |
| CN202254301U (en) | Gas storage water heater | |
| CN103032951A (en) | Positive displacement gas water heater | |
| CN105860611B (en) | A kind of infrared radiation coating and preparation method thereof | |
| CN205040043U (en) | Shell of far infrared heating pipe | |
| CN207501169U (en) | A kind of and wall type emission-control equipment | |
| CN106679171A (en) | Ordinary pressure hot-gas boiler | |
| CN102604466A (en) | Black-increasing agent for high-temperature infrared-radiation energy-saving coating and preparation method of black-increasing agent | |
| CN1269973C (en) | Warm up method of combustion supporting air through coal gas from blast furnace hot blast stove in high temperature | |
| CN204923850U (en) | Stove is emptyd to air preheating -type crucible | |
| CA2741095A1 (en) | A heat exchanger for an annealing furnace for exchanging heat between two fluids | |
| CN103900405A (en) | Movable heat pipe radiator used for heating coal stove | |
| CN101666502A (en) | Heat exchanger in self-preheating burner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180605 Termination date: 20201228 |