CN85100311B - 硼-稀土-硅三元共渗盐浴成分 - Google Patents
硼-稀土-硅三元共渗盐浴成分 Download PDFInfo
- Publication number
- CN85100311B CN85100311B CN85100311A CN85100311A CN85100311B CN 85100311 B CN85100311 B CN 85100311B CN 85100311 A CN85100311 A CN 85100311A CN 85100311 A CN85100311 A CN 85100311A CN 85100311 B CN85100311 B CN 85100311B
- Authority
- CN
- China
- Prior art keywords
- rare earth
- boron
- salt bath
- silicon
- cementation
- 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.)
- Expired
Links
- 150000003839 salts Chemical class 0.000 title claims abstract description 11
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 5
- 239000010703 silicon Substances 0.000 title claims abstract description 5
- 239000000203 mixture Substances 0.000 claims abstract 3
- 229910001018 Cast iron Inorganic materials 0.000 claims abstract 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract 2
- 229910000831 Steel Inorganic materials 0.000 claims abstract 2
- 239000010959 steel Substances 0.000 claims abstract 2
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 8
- 150000002910 rare earth metals Chemical class 0.000 claims description 5
- DPDMMXDBJGCCQC-UHFFFAOYSA-N [Na].[Cl] Chemical compound [Na].[Cl] DPDMMXDBJGCCQC-UHFFFAOYSA-N 0.000 claims description 4
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims description 2
- 229910021538 borax Inorganic materials 0.000 claims description 2
- UQGFMSUEHSUPRD-UHFFFAOYSA-N disodium;3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane Chemical compound [Na+].[Na+].O1B([O-])OB2OB([O-])OB1O2 UQGFMSUEHSUPRD-UHFFFAOYSA-N 0.000 claims description 2
- 230000004927 fusion Effects 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 2
- 239000004328 sodium tetraborate Substances 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims 1
- 239000000956 alloy Substances 0.000 claims 1
- 229910000676 Si alloy Inorganic materials 0.000 abstract description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract 2
- 238000003723 Smelting Methods 0.000 abstract 1
- 239000003638 chemical reducing agent Substances 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 230000001590 oxidative effect Effects 0.000 abstract 1
- 239000011780 sodium chloride Substances 0.000 abstract 1
- 239000003961 penetration enhancing agent Substances 0.000 description 7
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000008595 infiltration Effects 0.000 description 4
- 238000001764 infiltration Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 238000005271 boronizing Methods 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
Landscapes
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
一种钢或铸铁零件表面进行硼－稀土－硅二元共渗的盐浴成分，用于金属表面热处理，为解决硼渗层脆性等缺点，本发明采用了硼－稀土－硅二元共渗，并以稀土－硅合金为还原剂，加入剂氯化钠调节融盐的熔化温度，用以提高零件表面的耐磨性、抗高温氧化性及耐蚀性。
Description
本发明属于金属表面热处理。
目前，世界各国对工件表面进有盐浴渗硼时，所采用的渗剂：
美国 Na2B4O760%+Mg40%
保加利亚 Na2B4O730～45、B2O315～20%，NaF15～24%。
日本 在以Mg为还原剂的基础上，以H3BO３K2B4O7为主盐以NaF为活化剂。
最近，苏联为提高渗剂的饱和能力，在渗硼渗剂中增添Al2O3和NiO，新成分(wt%）B4C 44～50Al2O344～50，NiO3～5,ALF3
1～3以上渗硼渗剂普遍的缺点是原材料成本费昂贵，工艺操作温度高，处理过程产生有害气氛，污染环境除有上述缺点外，还大都具有脆性的渗层FeB脆性大，近几年来研究仅由Fe2B构成的渗硼渗剂，存在着工艺设备复杂，成本进一步提高的缺点。
本发明的目的是提供一种更经济、工艺简单、无公害、而渗层能获得以Fe2B为主的渗硼方法。本发明的另一个目的是充分利用我国丰富的稀土元素资源，发掘稀土内在优良的物理化学性能，开发稀土在钢铁材料强化应用的新领域。
本发明的要点是采用硼-稀土-硅三元共渗，盐浴以稀土-硅合金为还原剂，加入剂氯化钠调节融盐的熔化温度，一般四硼酸钠量为55～80%（wt%），Re35稀土-硅铁合金为15～40%（wt%），氯化钠为5～15%（wt%）。
本发明在工艺操作，渗层质量及生产成本方面与各国及苏联专利A、C920079比有如下优点：1、由于用稀土做还原剂和催渗剂，故可改善渗层的相组成。容易获得Fe2B相，消除渗层脆性，提高耐磨性。2、由于稀土除有还原催化作用以外本身还是渗入元素，可使工件获得抗蚀性和高温抗氧化性。3、能获得比用已知成分的渗剂，在同一时间内获得的硼化物层的厚度增厚25～30%。4、可将渗硼温度控制在淬火温度，把渗硼和其随后的淬火热处理结合进行，从而简化了工艺。5、本渗剂有较好的流动性，使其工件表面所附残盐易于清理。
除如上所述之外，本发明还有无公害，材料价格低廉，操作安全等优点。
Claims (2)
1、一种钢或铸铁零件表面进行硼-稀土-硅元共渗的盐浴成分，其特征在于其配方为：四硼酸钠为55～80%，Re35稀土硅铁合金15～40%，氯化钠5～15%;
2、按照权利要求1所述的硼-稀土-硅，元素渗盐浴成分，其特征是加入氯化钠调节融盐的熔化温度。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85100311A CN85100311B (zh) | 1985-04-01 | 1985-04-01 | 硼-稀土-硅三元共渗盐浴成分 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85100311A CN85100311B (zh) | 1985-04-01 | 1985-04-01 | 硼-稀土-硅三元共渗盐浴成分 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85100311A CN85100311A (zh) | 1986-07-30 |
| CN85100311B true CN85100311B (zh) | 1986-12-17 |
Family
ID=4791051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN85100311A Expired CN85100311B (zh) | 1985-04-01 | 1985-04-01 | 硼-稀土-硅三元共渗盐浴成分 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85100311B (zh) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7438769B2 (en) * | 2006-04-18 | 2008-10-21 | Philos Jongho Ko | Process for diffusing titanium and nitride into a material having a coating thereon |
-
1985
- 1985-04-01 CN CN85100311A patent/CN85100311B/zh not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN85100311A (zh) | 1986-07-30 |
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| SE01 | Entry into force of request for substantive examination | ||
| PB01 | Publication | ||
| C06 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |