CN108145150A - 一种基于非晶镀镍-磷粉末生产工艺 - Google Patents
一种基于非晶镀镍-磷粉末生产工艺 Download PDFInfo
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- 239000000843 powder Substances 0.000 title claims abstract description 23
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 9
- 238000005516 engineering process Methods 0.000 title claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 31
- 238000007747 plating Methods 0.000 claims abstract description 25
- 229910000808 amorphous metal alloy Inorganic materials 0.000 claims abstract description 19
- 239000000956 alloy Substances 0.000 claims abstract description 18
- 239000011248 coating agent Substances 0.000 claims abstract description 18
- 238000000576 coating method Methods 0.000 claims abstract description 18
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 17
- 239000000758 substrate Substances 0.000 claims abstract description 15
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052751 metal Inorganic materials 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims abstract description 10
- 230000033001 locomotion Effects 0.000 claims abstract description 8
- 239000002245 particle Substances 0.000 claims abstract description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 6
- OFNHPGDEEMZPFG-UHFFFAOYSA-N phosphanylidynenickel Chemical compound [P].[Ni] OFNHPGDEEMZPFG-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000005096 rolling process Methods 0.000 claims abstract description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000005452 bending Methods 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 238000009713 electroplating Methods 0.000 claims abstract description 5
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 5
- 239000010439 graphite Substances 0.000 claims abstract description 5
- 239000011574 phosphorus Substances 0.000 claims abstract description 5
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000004615 ingredient Substances 0.000 claims abstract description 3
- 238000005480 shot peening Methods 0.000 claims abstract description 3
- 239000010935 stainless steel Substances 0.000 claims abstract description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 8
- 239000000654 additive Substances 0.000 claims description 8
- 230000000996 additive effect Effects 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 5
- XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical compound [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 claims description 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 4
- 229910021586 Nickel(II) chloride Inorganic materials 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 claims description 3
- LGQLOGILCSXPEA-UHFFFAOYSA-L nickel sulfate Chemical compound [Ni+2].[O-]S([O-])(=O)=O LGQLOGILCSXPEA-UHFFFAOYSA-L 0.000 claims description 3
- 229910000363 nickel(II) sulfate Inorganic materials 0.000 claims description 3
- ISIJQEHRDSCQIU-UHFFFAOYSA-N tert-butyl 2,7-diazaspiro[4.5]decane-7-carboxylate Chemical compound C1N(C(=O)OC(C)(C)C)CCCC11CNCC1 ISIJQEHRDSCQIU-UHFFFAOYSA-N 0.000 claims description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 claims description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 2
- ACVYVLVWPXVTIT-UHFFFAOYSA-N phosphinic acid Chemical class O[PH2]=O ACVYVLVWPXVTIT-UHFFFAOYSA-N 0.000 claims description 2
- 229910021653 sulphate ion Inorganic materials 0.000 claims description 2
- 150000001735 carboxylic acids Chemical class 0.000 claims 1
- 238000002360 preparation method Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 7
- 239000013078 crystal Substances 0.000 abstract description 3
- 238000000498 ball milling Methods 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000002425 crystallisation Methods 0.000 description 4
- 230000008025 crystallization Effects 0.000 description 4
- 238000000137 annealing Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 229910021645 metal ion Inorganic materials 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 230000004224 protection Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 235000013312 flour Nutrition 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000005300 metallic glass Substances 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000004448 titration Methods 0.000 description 2
- KWSLGOVYXMQPPX-UHFFFAOYSA-N 5-[3-(trifluoromethyl)phenyl]-2h-tetrazole Chemical compound FC(F)(F)C1=CC=CC(C2=NNN=N2)=C1 KWSLGOVYXMQPPX-UHFFFAOYSA-N 0.000 description 1
- 229910001369 Brass Inorganic materials 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- 238000005280 amorphization Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical group 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- -1 hydrogen Sodium hydroxide Chemical class 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000006247 magnetic powder Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 description 1
- 229910052939 potassium sulfate Inorganic materials 0.000 description 1
- 235000011151 potassium sulphates Nutrition 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000001509 sodium citrate Substances 0.000 description 1
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical group O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 description 1
- 229910001379 sodium hypophosphite Inorganic materials 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- B22F1/0003—
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C45/00—Amorphous alloys
- C22C45/04—Amorphous alloys with nickel or cobalt as the major constituent
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/56—Electroplating: Baths therefor from solutions of alloys
- C25D3/562—Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of iron or nickel or cobalt
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/04—Electroplating with moving electrodes
- C25D5/06—Brush or pad plating
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Powder Metallurgy (AREA)
Abstract
一种镍‑磷粉末的成分为镍75‑95 wt%,磷5‑25 wt%,粉末为非晶态结构。生产工艺其特征在于,包括以下步骤:(1)金属基板在常温下的延伸率不小于10%,基板被镀表面的除锈、脱脂处理;(2)镍‑磷非晶合金镀层的制备:采用电刷镀方法制备镍‑磷非晶合金镀层,阳极采用石墨板或不锈钢板,电极的电流密度为0.5‑5 A/mm2,电极相对运动速度为5‑20 m/min,滴定盐酸或硫酸溶液使镀液Ph值小于3,施镀温度为50‑85℃;(3)利用基板与非晶镀层塑性变形能力的差异,采用轧制、弯曲、喷丸等方法使非晶合金镀层脱落;(4)脱落的非晶合金镀层采用球磨机、颗粒破碎机等方式进行破碎,球磨机、颗粒破碎机应采用强制冷却方式或间隙工作方式。该工艺简单,可操作性强。
Description
技术领域
本发明涉及一种非晶合金粉末,尤其是涉及一种基于非晶镀镍-磷粉末生产工艺。
背景技术
随着电子电力、通信工业的发展,电子元器件向小型化、高频化和大电流方向发
展,而且对电子设备的电磁兼容性能的要求也越来越高,传统的非晶带材铁芯、软磁铁氧体
及金属磁粉芯等已不能满足需求。普通磁性材料性能缺陷主要表现在:(1) 非晶带材铁芯在高频工作时感应涡流导致损耗很大,限制其在高频领域的应用;(2) 软磁铁氧体高频损耗低,但是饱和磁感应强度和磁导率低,不能满足小型化和大电流的发展需求;(3) 金属磁粉芯存在着高频损耗高、直流叠加特性差或者价格昂贵等问题,限制了其应用范围。非晶结构具有长程无序、短程有序的结构,使粉末具有很多独特的性能。非晶磁性粉末由于其优异的软磁性能,可以满足各种电子元器件稳定化、小型化、高频化、大电流、高功率的需求,能极大促进汽车、电子、航空航天领域等高新技术行业的发展。而钴基非晶合金粉末除具有优异的磁性能,还具有耐高温、耐燃气腐蚀、耐磨、耐蚀等性能,在电子、涂层和硬质合金中得到广泛应用。
到目前为止,非晶合金粉末的制备工艺主要有水雾法、气雾法以及使用非晶薄带破碎制粉的工艺。水雾法具有大的冷却速率,可满足制备非晶态粉末的要求。然而,在水雾化过程中,所获得的粉末易形成氧化物,氧含量高,再者当熔融金属凝固时,产生的水蒸气会覆盖在熔融金属的表面,该水蒸气膜的存在将导致熔融的核心金属冷却强度降低,从而使粉末中心部分不能获得非晶态结构的问题,影响器件性能。气雾法由于冷却强度受限,只能制备非晶形成能力强的非晶合金粉末,且生产成本高。直接破碎法的优点在于对物料的选择性不强,材料利用率高,但需对非晶薄带进行脆化退火,很容易由于退火不均造成薄带内部晶化转变的不均匀,而且在破碎后容易产生带有锐角的粉末颗粒,为粉末的后续加工带来困难。
而与液态急冷法、溅射法制备非晶合金材料相比,电镀法更为经济,应用范围也更为广阔。电刷镀镀层的形成从本质上讲和电镀相同,都是溶液中的金属离子在负极(工件)上放电结晶的过程。但是和电镀相比,电刷镀中镀笔和工件有相对运动,因而被镀表面不是整体同时发生金属离子还原结晶,而是被镀表面各点在镀笔与其接触时发生瞬间放电结晶。因此,电刷镀技术在工艺方面有其独特之处,其特点可归纳如下:
1、设备简单,不需要镀槽,便于携带,适用于野外及现场修复。尤其对于大型、精密设备的现场无需解体,修复更具有实用价值;
2、工艺简单,操作灵活,不需要镀的部位不要用很多的材料保护;
3、操作过程中,阴极与阳极有相对运动,故允许使用较高的电流密度,它比槽镀使用的电流密度大几倍到几十倍;
4、镀液中金属离子含量高,所以镀积速度快(比槽镀快5倍~10倍);
5、有不同型号的镀笔,并配有形状不同、大小不一的不溶阳极,对各种不同几何形状及结构复杂的零部件都可修复;
6、费用低,经济效益大。
发明内容
针对上述问题,本发明提供了一种基于非晶镀镍-磷粉末生产工艺。
本发明的镍-磷非晶合金粉末的成分为镍75-95 wt%,磷5-25 wt%,粉末为非晶态结构。
本发明镍-磷粉末的生产工艺。包括以下步骤:
(1)金属基板选择及被镀表面的除锈、脱脂处理:金属基板的在常温下的延伸率不小于10%;
(2)电刷镀液的组成:氯化镍或硫酸镍3-7.5 mol/L(优选4-6 mol/L)、磷酸0.5-1.5mol/L、亚磷酸或次磷酸盐0.2-3 mol/L、添加剂1-8g/L,可溶性硫酸盐或氯化盐10-50 g/L、余量水;
上述添加剂为羧酸、柠檬酸盐;
(3)采用电刷镀方法制备镍-磷非晶合金镀层,阳极采用石墨板或不锈钢板,电极的电流密度为1-10 A/mm2,电极相对运动速度为5-20 m/min,滴定盐酸或硫酸溶液使镀液Ph值小于3,施镀温度为50-85℃;
(4)利用基板与非晶镀层塑性变形能力的差异,采用轧制、弯曲、喷丸等方法使非晶合金镀层脱落;
(5)非晶合金颗粒的破碎,脱落的非晶合金镀层采用球磨机、颗粒破碎机等方式进行破碎。破碎时,球磨机、颗粒破碎机应采用强制冷却方式或间隙工作方式,以防止非晶合金颗粒在破碎时产生较大温升,发生晶化转变;
(6)采用筛子筛分成不同粗细的镍-磷非晶合金粉末。
与现有技术相比,本发明具有以下优点:
1.与气雾法和直接破碎法相比,本工艺具有设备投资少、工艺简单,对非晶合金形成能力要求不高等特点;
2.与水雾法相比,粉末不会产生氧化和部分非晶化的问题;
3.与直接破碎法相比,由于采用PH值较小条件下沉积,致使镀层内产生了较大的内应力和较多孔隙,镀层无需脆化退火即可脱落与破碎,且也不会产生带有锐角的粉末颗粒;
4.与电镀法+破碎法制备非晶合金粉末法相比,由于电刷镀两电极间有相对运动,电镀液也是流动状态,因此,没有电镀产生的浓差极化问题,可以使用相对更大的电流密度,提高粉末的生产效率;
5.与常规电刷镀而言,因为对镀层应力和表面质量没有要求,因此可采用更大的电流密度,既提高了非晶合金镀层的制备速度,也有利于获得更疏松和具有更大内应力的非晶合金镀层,从而更易对非晶合金镀层进行轧制压下剥离;
6.本方法无需考虑对材料的非晶形成能力,可通过调整电镀液各主要成分的浓度配比,可获得不同组元构成和比例的非晶合金粉末,因此,本方法的适用性更为广泛,可操作性更强,可满足不同场合对非晶合金粉末性能的要求。
具体实施方式
以下结合实施例对本发明作进一步说明。
实施例1Ni84P16非晶合金粉末的制备
其制备工艺,包括以下步骤:
(1)金属基板表面的预处理:金属基板选用08F钢板,板厚为1mm,被镀基板表面分别经氢氧化钠溶液和盐酸溶液清洗,以去除油脂和氧化;
(2)电刷镀液组成:氯化镍5 mol/L、磷酸0.8 mol/L、亚磷酸0.8 mol/L、添加剂3g/L,氯化钾15 g/L、余量水;
上述添加剂为酒石酸;
(3)非晶合金镀层的制备:预处理后的镀件接入阴极,阳极采用石墨板,搅拌电镀液,电极的电流密度为1.5 A/mm2,施镀温度为65 ℃,电极相对运动速度为10 m/min,滴定盐酸使电镀液Ph值为2;
(4)采用轧制压延法剥离非晶合金镀层,轧制压下率为8%;
(5)非晶合金颗粒的破碎,采用行星球磨机破碎,非晶合金颗粒在氩气保护破碎,球磨4h,球料比为3:1,球磨方式采用间隙工作方式,球磨机每球磨3min,休息10min,避免非晶粉末产生较大的温升;
(6)非晶合金粉末的筛分。
实施例2 Ni92P8非晶合金粉末的制备
其制备工艺,包括以下步骤:
(1)金属基板表面的预处理:金属基板选用黄铜板,板厚为1mm,被镀基板表面分别经氢氧化钠溶液和盐酸溶液清洗,以去除油脂和氧化;
(2)电刷镀液组成:硫酸镍4.5 mol/L、磷酸0.5 mol/L、次磷酸钠0.5 mol/L、添加剂3g/L,硫酸钾22 g/L、余量水;
上述添加剂为柠檬酸钠;
(3)非晶合金镀层的制备:预处理后的镀件接入阴极,阳极采用石墨板,搅拌电镀液,电极的电流密度为2 A/mm2,施镀温度为65 ℃,电极相对运动速度为12 m/min,滴定盐酸使电镀液Ph值为1;
(4)采用反复弯曲法剥离非晶合金镀层,弯曲半径为0.2 m;
(5)非晶合金颗粒的破碎,采用行星球磨机破碎,非晶合金颗粒在氩气保护破碎,球磨3h,球料比为5:1,球磨方式采用间隙工作方式,球磨机每球磨3min,休息10min,避免非晶粉末产生较大的温升;
(6)非晶合金粉末的筛分。
Claims (3)
1.一种基于非晶镀镍-磷粉末的成分为镍75-95 wt%,磷5-25 wt%,粉末为非晶态结构。
2.镍-磷非晶合金粉末的生产工艺,其特征在于,包括以下步骤:
(1)金属基板在常温下的延伸率不小于10%,基板被镀表面的除锈、脱脂处理;
(2)电刷镀液的组成:氯化镍或硫酸镍3-7.5 mol/L(优选4-6 mol/L)、磷酸0.5-1.5mol/L、亚磷酸或次磷酸盐0.2-3 mol/L、添加剂1-8g/L,可溶性硫酸盐或氯化盐10-50 g/L、余量水;
(3)采用电刷镀方法制备镍-磷非晶合金镀层,阳极采用石墨板或不锈钢板,电极的电流密度为1-10 A/mm2,电极相对运动速度为5-20 m/min,滴定盐酸或硫酸溶液使镀液Ph值小于3,施镀温度为50-85℃;
(4)利用基板与非晶镀层塑性变形能力的差异,采用轧制、弯曲、喷丸等方法使非晶合金镀层脱落;
(5)脱落的非晶合金镀层采用球磨机、颗粒破碎机等方式进行破碎,球磨机、颗粒破碎机应采用强制冷却方式或间隙工作方式;
(6)采用筛子筛分成不同粗细的镍-铁-磷非晶合金粉末。
3.权利要求2所述的添加剂为羧酸、柠檬酸盐。
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