CN106283050B - 一种提高金属纤维毡过滤精度的方法 - Google Patents
一种提高金属纤维毡过滤精度的方法 Download PDFInfo
- Publication number
- CN106283050B CN106283050B CN201610633142.0A CN201610633142A CN106283050B CN 106283050 B CN106283050 B CN 106283050B CN 201610633142 A CN201610633142 A CN 201610633142A CN 106283050 B CN106283050 B CN 106283050B
- Authority
- CN
- China
- Prior art keywords
- metal fiber
- fiber felt
- filtering accuracy
- nickel
- fibrofelt
- 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.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/02—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material
- C23C28/023—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material only coatings of metal elements only
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/1601—Process or apparatus
- C23C18/1633—Process of electroless plating
- C23C18/1646—Characteristics of the product obtained
- C23C18/165—Multilayered product
- C23C18/1653—Two or more layers with at least one layer obtained by electroless plating and one layer obtained by electroplating
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/31—Coating with metals
- C23C18/32—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron
- C23C18/34—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron using reducing agents
- C23C18/36—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron using reducing agents using hypophosphites
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/83—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with metals; with metal-generating compounds, e.g. metal carbonyls; Reduction of metal compounds on textiles
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Metallurgy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Textile Engineering (AREA)
- Electrochemistry (AREA)
- Chemically Coating (AREA)
- Electroplating And Plating Baths Therefor (AREA)
- Electroplating Methods And Accessories (AREA)
Abstract
本发明公开了一种提高金属纤维毡过滤精度的方法,将金属纤维毡依次经过除油、酸洗活化后,在金属纤维毡表面依次进行闪镀镍和化学镀镍,然后用去离子水清洗。本发明提高金属纤维毡过滤精度的方法,能够有效增加纤维的尺寸,减小孔径,从而提高金属纤维毡过滤精度,克服了金属纤维丝径对过滤精度的限制,可以将精度5μm的纤维毡提高到3μm,并能保持良好的透气性能,改善了纤维表面状态,处理后的纤维毡可以抵抗大气、碱和某些酸的腐蚀,并且提高纤维毡表面的耐磨性,极大程度上促进了纤维毡在高精过滤分离领域的应用。
Description
技术领域
本发明属于过滤分离技术领域,具体涉及一种提高金属纤维毡过滤精度的方法。
背景技术
金属纤维毡是具有高的孔隙率(最高达90%),耐高温、耐腐蚀的多孔材料。近些年来社会在环保法中对工业污水排放、生活饮用水标准等都有了更加严格的要求,这就要求金属纤维毡达到更高的过滤精度。
由于受到纤维丝经的限制,目前国内市场上纤维毡的最高精度为5μm,并且价格昂贵。传统的覆膜工艺是在多孔材料表面制备一定厚度的陶瓷膜(Al2O3或TiO2等),但是金属纤维毡材质较软,并且热膨胀系数和陶瓷材料差异较大,在使用过程中容易造成膜层与基体的分离开裂,影响其过滤效果。
发明内容
本发明的目的是提供一种提高金属纤维毡过滤精度的方法,解决了由于受到纤维丝经的限制,现有纤维毡的最高精度为5μm且价格昂贵的问题。
本发明所采用的技术方案是,一种提高金属纤维毡过滤精度的方法,将金属纤维毡依次经过除油、酸洗活化后,在金属纤维毡表面依次进行闪镀镍和化学镀镍,然后用去离子水清洗。
本发明的特点还在于,
除油液由NaOH、Na2CO3和Na3PO4的水溶液组成,其中1L水中含15~35g NaOH、20~35gNa2CO3和24~30g Na3PO4。
酸洗活化是将除油后的金属纤维毡放入酸洗液中,浸泡25~30s后用去离子水快速冲洗一遍,再放入5%的硫酸水溶液中活化25~30s。
酸洗液由HCl和H2O组成,其中HCl和H2O的体积比为3:7。
闪镀液由NiCl2和HCl的水溶液组成,其中1L水中含有200~250g NiCl2和180~250g ml HCl。
闪镀镍时,阳极为镍板,纤维毡阴极,调节电镀镍电流密度为3.5~7.5A/dm2,电镀时间1~2min。
化学镀镍是将化学镀液加热至60~80℃,采用H2SO4溶液将调节pH值到5,然后将闪镀镍后的金属纤维毡放入化学镀液中进行处理,化学镀时间为10~30min。
化学镀液由NiSO4·6H2O、CH3CH(OH)COOH、NaH2PO2·H2O、CH3COONa和(CH3COO)2Pb的水溶液组成,其中1L水中含有20~40g NiSO4·6H2O、15~25g CH3CH(OH)COOH、20~30gNaH2PO2·H2O、5~10g CH3COONa和0.09~0.12g(CH3COO)2Pb。
化学镀液的具体配制方法为首先将NiSO4·6H2O和CH3CH(OH)COOH采用去离子水溶解后混合搅拌均匀,然后按顺序依次加入NaH2PO2·H2O、CH3COONa和(CH3COO)2Pb并充分搅拌均匀。
本发明的有益效果是,本发明提高金属纤维毡过滤精度的方法,能够有效增加纤维的尺寸,减小孔径,从而提高金属纤维毡过滤精度,克服了金属纤维丝径对过滤精度的限制,可以将精度5μm的纤维毡提高到3μm,并能保持良好的透气性能,改善了纤维表面状态,处理后的纤维毡可以抵抗大气、碱和某些酸的腐蚀,并且提高纤维毡表面的耐磨性,极大程度上促进了纤维毡在高精过滤分离领域的应用。
附图说明
图1为本发明实施例1镀镍前纤维毡的纤维组织图。
图2为本发明实施例1镀镍后纤维毡的纤维组织图。
具体实施方式
下面结合具体实施方式对本发明进行详细说明。
本发明提高金属纤维毡过滤精度的方法,将金属纤维毡依次经过除油、酸洗活化后,在金属纤维毡表面依次进行闪镀镍和化学镀镍,然后用去离子水清洗。
具体按照以下步骤实施:
步骤1,将金属纤维毡用水冲洗后浸渍到除油液(除油液由NaOH、Na2CO3和Na3PO4的水溶液组成,其中1L水中含15~20gNaOH、20~30gNa2CO3和24~30g Na3PO4中,如此反复操作,直至油除净为止,然后放入酸洗液(酸洗液由HCl和H2O组成,其中HCl和H2O的体积比为3:7,浸泡25~30s后用去离子水快速冲洗一遍,放入5%的硫酸水溶液中活化25~30s;
步骤2,将步骤1处理后的金属纤维毡放入闪镀液中进行闪镀镍,闪镀液由NiCl2和HCl的水溶液组成,其中1L水中含有200~250g NiCl2和180~250g ml HCl;闪镀镍时,阳极为镍板,纤维毡阴极,调节电镀镍电流密度为3.5~7.5A/dm2,电镀时间1~2min;
步骤3,将化学镀液加热至60~80℃,然后采用H2SO4溶液将调节pH值到5,将步骤2闪镀镍后的金属纤维毡放入化学镀液中进行处理,化学镀时间为10~30min,用去离子水冲洗。
步骤4,采用气泡法对本发明方法处理过的金属纤维毡进行测试,与未处理的纤维毡进行对比,其中浸润液体为异丙醇,将纤维毡完全浸润后,使纤维毡中开孔隙完全饱和,然后用气体将试样孔隙中浸入的液体缓缓推出,记录冒出第一个气泡点的压力,试样表面高度和液体温度,计算出纤维毡的等效过滤精度。
其中化学镀液由NiSO4·6H2O、CH3CH(OH)COOH、NaH2PO2·H2O、CH3COONa和(CH3COO)2Pb的水溶液组成,其中1L水中含有20~40g NiSO4·6H2O、15~25g CH3CH(OH)COOH、20~30g NaH2PO2·H2O、5~10g CH3COONa和0.09~0.12g(CH3COO)2Pb。
化学镀液的具体配制方法为首先将NiSO4·6H2O和CH3CH(OH)COOH采用去离子水溶解后混合搅拌均匀,然后按顺序依次加入NaH2PO2·H2O、CH3COONa和(CH3COO)2Pb并充分搅拌均匀。
该化学镀液的主盐为NiSO4,这是由于镍具有很强的钝化能力,在表面能迅速生成一层极薄的钝化膜,能抵抗大气、碱和某些酸的腐蚀,并且镍镀层的硬度比较高,可以提高制品表面的耐磨性,其中络合剂CH3CH(OH)COOH作用就是防止镀液析出沉淀,增加镀液稳定性并延长使用寿命,也可以提高沉积速度。还原剂NaH2PO2·H2O主要使纤维表面靠自催化的还原作用而进行的镍层的沉积过程。由于化学镀镍过程中有氢离子产生,使溶液pH值随施镀进程而逐渐降低,为了稳定镀速及保证镀层质量,化学镀镍体系必须具备PH值缓冲能力,醋酸钠具备络合镍离子的能力,而且具有缓冲性能,其工作原理是它部分与溶液中的氢离子结合成弱酸,形成弱酸-弱酸盐体系。化学镀镍溶液是一个热力学不稳定体系,由于种种原因,如局部过热、pH值提高,或某些杂质影响,不可避免的会在镀液中出现一些活性微粒催化核心,使镀液发生激烈的均向自催化反应,产生大量Ni-P黑色粉末,导致镀液短期内发生分解,逸出大量气泡,稳定剂(CH3COO)2Pb的作用就在于抑制镀液的自发分解,使施镀过程在控制下有序进行。
由于纤维毡材质一般为不锈钢,纤维表面上有一层钝化膜,若按常规钢铁件表面预处理的方式进行前处理,化学镀层的结合强度很差,很难保证结合力,所以在一般除油后要附加在酸中进行活化,以改善镀层的结合强度。为可靠起见,还需要进行预镀镍,本发明预镀就是采用较大的阴极电流密度在很短时间内将纤维表面闪镀上一层镍,为后续的主镀镍层打底,以保证镀层与基体的结合力。
实施例1
采用精度5μm的不锈钢纤维毡进行化学镀镍试验,材质为316L,通过气泡法测试其泡点压力7500Pa。
步骤1,将不锈钢纤维毡用水冲洗后浸渍到NaOH(18g/L)、Na2CO3(32g/L)和Na3PO4(35g/L)组成的除油液中,如此反复操作,直至油除净为止,取出后放入HCl和H2O体积比为3:7的酸洗溶液中,浸泡25s后用去离子水快速冲洗一遍,放入5%的硫酸水溶液中活化30s后快速放进镀液进行闪镀镍;
步骤2,将步骤1中处理后的纤维毡进行表面闪镀镍时,镀液配方为NiCl2(220g/L)和HCl(180ml/L),阳极为镍板,纤维毡阴极,调节电镀镍电流电流密度为4A/dm2,控制电镀时间1min后取出;
步骤3,加热化学镀液至60℃后放入步骤2处理后的纤维毡,用H2SO4溶液将调节pH值到5,化学镀时间15min,用去离子水冲洗样品并晾干。化学镀液配方:1L水中含有17gNiSO4·6H2O、15g CH3CH(OH)COOH、20g NaH2PO2·H2O、7g CH3COONa和0.09g(CH3COO)2Pb。
采用气泡法测试实施例1处理后的金属纤维毡,得到泡点压力为8700Pa,相当于过滤精度为4.2μm。
从图1和图2可以看出,镀镍前纤维丝径较细,表面凹凸不平,镀镍后的纤维表面光滑,丝径明显变粗,孔径减小,达到了提高精度的效果。
实施例2
采用精度5μm的不锈钢纤维毡进行化学镀镍试验,材质为316L,通过气泡法测试其泡点压力7500Pa。
步骤1,将不锈钢纤维毡用水冲洗后浸渍到NaOH(20g/L)、Na2CO3(30g/L)和Na3PO4(30g/L)组成的除油液中,如此反复操作,直至油除净为止,取出后放入HCl和H2O体积比为3:7的酸洗溶液中,浸泡30s后用去离子水快速冲洗一遍,放入5%的硫酸水溶液中活化30s后快速放进镀液进行闪镀镍;
步骤2将步骤1中处理后的纤维毡进行表面闪镀镍时,镀液配方为NiCl2(240g/L)和HCl(320ml/L),阳极为镍板,纤维毡为阴极,调节电镀镍电流电流密度为5A/dm2,控制电镀时间2min后取出;
步骤3加热化学镀液至70℃后放入步骤2处理后的纤维毡,用H2SO4溶液将调节pH值到5,化学镀时间20min,用去离子水冲洗样品并擦晾干。化学镀液配方:1L水中含有30gNiSO4·6H2O、20g CH3CH(OH)COOH、25g NaH2PO2·H2O、5g CH3COONa和0.1g(CH3COO)2Pb。
采用气泡法测试实施例2处理后的金属纤维毡,得到泡点压力为9500Pa,相当于过滤精度为3.5μm。
实施例3
采用精度5μm的不锈钢纤维毡进行化学镀镍试验,材质为316L,通过气泡法测试其泡点压力7500Pa。
步骤1,将不锈钢纤维毡用水冲洗后浸渍到NaOH(30g/L)、Na2CO3(35g/L)和Na3PO4(28g/L)组成的除油液中,如此反复操作,直至油除净为止,取出后放入HCl和H2O体积比为3:7的酸洗溶液中,浸泡30s后用去离子水快速冲洗一遍,放入5%的硫酸水溶液中活化25s后快速放进镀液进行闪镀镍;
步骤2,将步骤1中处理后的纤维毡进行表面闪镀镍时,镀液配方为NiCl2(220g/L)和HCl(220ml/L),阳极为镍板,纤维毡为阴极,调节电镀镍电流电流密度为7A/dm2,控制电镀时间2min后取出;
步骤3,加热化学镀液至80℃后放入步骤2处理后的纤维毡,用H2SO4溶液将调节pH值到5,化学镀时间30min,用去离子水冲洗样品并晾干。化学镀液配方:1L水中含有40gNiSO4·6H2O、25g CH3CH(OH)COOH、30g NaH2PO2·H2O、10g CH3COONa和0.12g(CH3COO)2Pb。
采用气泡法测试实施例3处理后的金属纤维毡,得到泡点压力为12000Pa,相当于过滤精度为3μm。
以上所述仅是本发明的较佳实施方式,非对本发明做任何限制,凡是根据发明实质对以上实施例所做的任何简单修改、变更以及等效结构变化,均仍属于本发明技术方案的保护范围内。
Claims (4)
1.一种提高金属纤维毡过滤精度的方法,其特征在于,将金属纤维毡依次经过除油、酸洗活化后,在金属纤维毡表面依次进行闪镀镍和化学镀镍,然后用去离子水清洗;
酸洗活化是将除油后的金属纤维毡放入酸洗液中,浸泡25~30s后用去离子水快速冲洗一遍,再放入5%的硫酸水溶液中活化25~30s;
闪镀液由NiCl2和HCl的水溶液组成,其中1L水中含有200~250g NiCl2和180~250g mlHCl;闪镀镍时,阳极为镍板,纤维毡阴极,调节电镀镍电流密度为3.5~7.5A/dm2,电镀时间1~2min;
化学镀镍是将化学镀液加热至60~80℃,采用H2SO4溶液将调节pH值到5,然后将闪镀镍后的金属纤维毡放入化学镀液中进行处理,化学镀时间为10~30min;化学镀液由NiSO4·6H2O、CH3CH(OH)COOH、NaH2PO2·H2O、CH3COONa和(CH3COO)2Pb的水溶液组成,其中1L水中含有20~40g NiSO4·6H2O、15~25g CH3CH(OH)COOH、20~30g NaH2PO2·H2O、5~10g CH3COONa和0.09~0.12g(CH3COO)2Pb。
2.根据权利要求1所述的提高金属纤维毡过滤精度的方法,其特征在于,除油液由NaOH、Na2CO3和Na3PO4的水溶液组成,其中1L水中含15~35g NaOH、20~35gNa2CO3和24~30gNa3PO4。
3.根据权利要求1所述的提高金属纤维毡过滤精度的方法,其特征在于,酸洗液由HCl和H2O组成,其中HCl和H2O的体积比为3:7。
4.根据权利要求1所述的提高金属纤维毡过滤精度的方法,其特征在于,化学镀液的具体配制方法为首先将NiSO4·6H2O和CH3CH(OH)COOH采用去离子水溶解后混合搅拌均匀,然后按顺序依次加入NaH2PO2·H2O、CH3COONa和(CH3COO)2Pb并充分搅拌均匀。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610633142.0A CN106283050B (zh) | 2016-08-04 | 2016-08-04 | 一种提高金属纤维毡过滤精度的方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610633142.0A CN106283050B (zh) | 2016-08-04 | 2016-08-04 | 一种提高金属纤维毡过滤精度的方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN106283050A CN106283050A (zh) | 2017-01-04 |
CN106283050B true CN106283050B (zh) | 2018-12-25 |
Family
ID=57664832
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201610633142.0A Active CN106283050B (zh) | 2016-08-04 | 2016-08-04 | 一种提高金属纤维毡过滤精度的方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN106283050B (zh) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109848408B (zh) * | 2019-01-29 | 2020-12-11 | 西安菲尔特金属过滤材料股份有限公司 | 一种超高精度纤维毡及其制备方法 |
CN110575710A (zh) * | 2019-09-05 | 2019-12-17 | 湖南省凯纳方科技有限公司 | 一种金属纤维毡及其制备方法 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104694910A (zh) * | 2013-12-09 | 2015-06-10 | 青岛平度市旧店金矿 | 一种仿生自清洁金属纤维过滤材料的制备工艺 |
-
2016
- 2016-08-04 CN CN201610633142.0A patent/CN106283050B/zh active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104694910A (zh) * | 2013-12-09 | 2015-06-10 | 青岛平度市旧店金矿 | 一种仿生自清洁金属纤维过滤材料的制备工艺 |
Also Published As
Publication number | Publication date |
---|---|
CN106283050A (zh) | 2017-01-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN110724992B (zh) | 在铝合金表面制备耐腐蚀超疏水膜层的方法 | |
CN104005026B (zh) | 一种在镁合金表面制备耐腐蚀超疏水膜层的方法 | |
CN101226800B (zh) | 一种用于烧结型钕铁硼永磁材料的表面处理方法 | |
CN104250813A (zh) | 一种镁合金超疏水自清洁耐腐蚀表面的制备方法 | |
CN103668369A (zh) | 一种提高金属件耐腐蚀性的电镀方法 | |
CN106283050B (zh) | 一种提高金属纤维毡过滤精度的方法 | |
CN108165958A (zh) | 一种紫铜表面化学镀Ni-P-石墨烯复合镀层的方法 | |
CN101962761B (zh) | 镁合金表面仿生疏水性涂层的制备方法 | |
CN106929835A (zh) | 化学镀液及采用其对SiC颗粒表面包覆Ni‑P的方法 | |
Lin et al. | Initiation electroless nickel plating by atomic hydrogen for PCB final finishing | |
CN101619448A (zh) | 一种用于铝合金表面化学镀镍磷合金层的预处理溶液 | |
CN108193191A (zh) | 掩膜板及其制备方法 | |
KR20100023986A (ko) | 전도성 섬유상의 금ㆍ은 도금방법 | |
CN112531431A (zh) | 高稳定性低阻抗弹簧针电连接器的制备及探针电镀工艺 | |
CN101709466B (zh) | 化学镀镍层的碱性钝化方法 | |
CN103985883B (zh) | 化学镀Ni-W-P改性液流电池碳毡电极材料的方法 | |
CN108425137A (zh) | 一种电沉积制备银镍合金电触头的方法 | |
CN210176975U (zh) | 一种镉钴合金及三价铬钝化的镀层结构 | |
CN111763930B (zh) | 一种非钯活化镀铜工艺及其敏化剂、活化剂 | |
CN102392279B (zh) | 一种陶瓷金属化层的电镀镍方法 | |
CN1986882A (zh) | 镁合金化学镀镍工艺 | |
CN110484944B (zh) | 一种制备石油管道耐蚀表面的复合电解液及超声辅助电沉积石油管道耐蚀层的制备方法 | |
CN105483804B (zh) | 一种碳化硼复合电极的制备方法 | |
CN101537490B (zh) | 镍磷合金包覆铁粉的制备方法 | |
CN105420703A (zh) | 一种用于NdFeB材料的超声波化学镀镍磷方法 |
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 | ||
CP01 | Change in the name or title of a patent holder |
Address after: 710201 Shaanxi city of Xi'an Province Economic and Technological Development Zone Jingwei Industrial Park Road No. 15 Patentee after: Xi'an ferro metal filter material Co.,Ltd. Address before: 710201 Shaanxi city of Xi'an Province Economic and Technological Development Zone Jingwei Industrial Park Road No. 15 Patentee before: XI'AN FILTER METAL MATERIALS Co.,Ltd. |
|
CP01 | Change in the name or title of a patent holder |