CN1129745A - Agent for co-cementation of boron, silicon and aluminum - Google Patents
Agent for co-cementation of boron, silicon and aluminum Download PDFInfo
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- CN1129745A CN1129745A CN 95111415 CN95111415A CN1129745A CN 1129745 A CN1129745 A CN 1129745A CN 95111415 CN95111415 CN 95111415 CN 95111415 A CN95111415 A CN 95111415A CN 1129745 A CN1129745 A CN 1129745A
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- boron
- agent
- silicon
- cementation
- powder
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Abstract
The B-Si-Al co-diffusing agent for chemicothermal treatment on surface of iron and steel materials contains Al2O3 (50-80 wt.%), Fe-Si (5-15) and B4C (5-15). After co-diffusing at 1100 deg.C for 4 hr, a B-Si-Al diffused layer of more than 5 mm in thickness is formed.
Description
The present invention relates to metallic substance heat treatment technics field, the particularly penetration enhancer of thermo-chemical treatment multiple permeation technology preparation.
To ferrous materials can carry out boronising or boron, aluminium oozes altogether, relevant document " metal alloy thermo-chemical treatment handbook Science and Technology of Shanghai press, 1986, P15, " heat processing technique " 1991 (2), boron and boron-aluminium co-permeation technology have all been reported in " metal heat treatmet " 1988 (2), and the penetration enhancer that is adopted generally is with B
4C, KBF
4Be boron supplying agent, Al powder, FeAl powder are as supplying the aluminium agent, and 50%B for example fills a prescription
4C+43%Al
2O
3+ 3%KBF
4+ 4%NaCl, but adopt these prescriptions and infiltration layer that method obtains all more shallow (30～40 μ m), special public 59-35988 of Japanese Patent and special public 55-82769 disclose boronising or the boron-aluminium co-permeation technology that obtains thicker infiltration layer, but institute's infiltration layer that obtains is all about 1mm.
The purpose of this invention is to provide and a kind ofly can obtain alloying layer thickness at steel material surface and reach boron, silicon, aluminium co-cementation agent more than the 5mm, it can improve the physical and chemical performance of ferrous materials effectively.
The present invention is to be realized by following technical scheme: under certain temperature, concentration conditions, can accelerate infiltration rate greatly if can manage to reduce the steel material surface fusing point, therefore to adopt weight percent (down with) be that 5～10%Al powder is as oozing the Al agent in the present invention, 5～15% Fe-Si powder is as oozing Si agent, 5～15%B
4C is as oozing B agent, 50～80%Al
2O
3As weighting agent, 2～4% rare earth and 3～4% NH
4Cl makes energizer.The active atomic that produces in the penetration enhancer at a certain temperature infiltrates steel material surface and has reduced fusing point, and a large amount of infiltrations of atom such as Al, Si, B subsequently can obtain the infiltration layer about 10mm.
Effect that the present invention is compared with prior art had and advantage are that the boride that infiltrates can form the chrysanthemum shape, forms such as fritter shape, and be evenly distributed, improved the toughness of material, after handling, certain temperature can obtain thickness and be boron, silicon, aluminium infiltration layer more than the 5mm, thereby improved the ferrous materials physical and chemical performance greatly, reached practical requirement.
Description of drawings of the present invention
Fig. 1 is a T10 steel B-Al-Si infiltration layer photo
Fig. 2 is a T10 steel B-Al-Si infiltration layer metallographic structure photo
The embodiment of the invention is as follows, gets 50% Al
2O
3, 10% Al, 15% B
4C, 15% Fe-Si makes Powdered, adds 5% rare earth element, 3% NH
4Cl, 2% Na
8AlF
8Mix, in the container of packing into, then workpiece is put among the powder, with lid container is sealed and put into resistance heading furnace, be heated to 1100 ℃, be incubated 4 hours, obtain the B-Al-Si infiltration layer about 6mm, as shown in Figure 1, the infiltration layer metallographic structure as shown in Figure 2.
Claims (2)
1. a boron, silicon, aluminium co-cementation agent is characterized in that Chemical Composition (weight %) is: Al powder 5～10%, Fe-Si powder 5～15%, B
4C powder 5～15%, Al
2O
3Powder 50～80%, Na
3AlF
64～5%, NH
4Cl3～4%, rare earth element 2～4%.
2. boron according to claim 1, silicon, aluminium co-cementation agent, the content that it is characterized in that Si among the Fe-Si is 75%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95111415 CN1129745A (en) | 1995-06-26 | 1995-06-26 | Agent for co-cementation of boron, silicon and aluminum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95111415 CN1129745A (en) | 1995-06-26 | 1995-06-26 | Agent for co-cementation of boron, silicon and aluminum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1129745A true CN1129745A (en) | 1996-08-28 |
Family
ID=5078710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95111415 Pending CN1129745A (en) | 1995-06-26 | 1995-06-26 | Agent for co-cementation of boron, silicon and aluminum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1129745A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102400077A (en) * | 2011-12-06 | 2012-04-04 | 无锡银荣板业有限公司 | Method for producing continuous hot-dip aluminum-silicon-boron alloy steel plates |
| CN102828147A (en) * | 2012-08-31 | 2012-12-19 | 西安交通大学 | Method for processing co-crystallizing boriding through rare earth catalyzed carburizing and high-temperature salt bath |
| CN104831231A (en) * | 2015-05-11 | 2015-08-12 | 长安大学 | Method for preparing anti-oxidation permeated layer on surface of molybdenum or molybdenum alloy |
-
1995
- 1995-06-26 CN CN 95111415 patent/CN1129745A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102400077A (en) * | 2011-12-06 | 2012-04-04 | 无锡银荣板业有限公司 | Method for producing continuous hot-dip aluminum-silicon-boron alloy steel plates |
| CN102828147A (en) * | 2012-08-31 | 2012-12-19 | 西安交通大学 | Method for processing co-crystallizing boriding through rare earth catalyzed carburizing and high-temperature salt bath |
| CN102828147B (en) * | 2012-08-31 | 2014-05-28 | 西安交通大学 | Method for processing co-crystallizing boriding through rare earth catalyzed carburizing and high-temperature salt bath |
| CN104831231A (en) * | 2015-05-11 | 2015-08-12 | 长安大学 | Method for preparing anti-oxidation permeated layer on surface of molybdenum or molybdenum alloy |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |