CN104894569B - Ni-Pd metal surface treatment agent - Google Patents

Ni-Pd metal surface treatment agent Download PDF

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Publication number
CN104894569B
CN104894569B CN201510375623.1A CN201510375623A CN104894569B CN 104894569 B CN104894569 B CN 104894569B CN 201510375623 A CN201510375623 A CN 201510375623A CN 104894569 B CN104894569 B CN 104894569B
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metal
schiff bases
compound
acid
contracting
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CN201510375623.1A
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CN104894569A (en
Inventor
肖忠良
吴道新
朱梦
周清清
贺定国
卢意鹏
崔凤洋
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Shenzhen Yicheng Electronic Technology Co ltd
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Changsha University of Science and Technology
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  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Chemical Treatment Of Metals (AREA)

Abstract

The invention provides a Ni-Pd metal surface treating agent which is high-temperature resistant and corrosion resistant and has good weldability after Ni-Pd metal is treated. The Ni-Pd metal surface treating agent is characterized by mainly comprising a corrosion inhibitor and a surfactant, wherein the effective components of the corrosion inhibitor are the compound of an organic phosphoric acid compound, a Schiff base compound and an N, S heterocyclic compound, the surfactant mainly adopts one or more nonionic surfactants, and the pH value of the Ni-Pd metal surface treating agent is controlled to be below 10.

Description

A kind of Ni-Pd metal conditioners
Technical field
The present invention relates to Ni-Pd metal conditioners.
Technical background
Nickel coating, palladium coating by its a variety of excellent chemistry and mechanical properties have been used for aviation, automobile, electric mechanical, The multiple fields such as petrochemical industry, electroless plating Ni-Au, electroless plating Ni-Pd-Au are used for the electronic units such as substrate, lead frame.Using Electroless form obtains nickel dam, obtains a Ceng Ba islands by the method for chemistry displacement palladium on nickel coating surface, passes through the technique Still there is part of nickel exposed metal/bare metal obtained Ni-Pb metal surfaces in air.Ni, Pd are easily oxidized by the air at high temperature, shadow Its weldability energy is rung, so needing to form one layer of protection epithelium on its surface using other corrosion inhibiter.
Existing technology is handled for single metallic surface more, and is not suitable with alloy or more Treatment of Metal Surface, and very Difficulty makes metal material while has anti-oxidant, corrosion-resistant and excellent welding performance, and Patents documents have CN 201180010000 and CN201110075074, there is problem above.
The content of the invention
It is an object of the present invention to provide a kind of surface conditioning agent used for Ni-Pd metals, by surface conditioning agent Active ingredient Ni-Pd metal surfaces formed organic coating, make it have anti-oxidant, corrosion-resistant and excellent welding performance, So that Ni-Pd metals are advantageous to the preparation of the electronic units such as substrate, lead frame.
A kind of Ni-Pd metal conditioners, are mainly made up of corrosion inhibiter and surfactant;
The corrosion inhibiter, mainly by organophosphor acid compounds, Schiff bases compound, N, S heterocyclic compound and halogen Element or halide salts compound to obtain;
Organophosphor acid compounds are the organic matter or its salt that intramolecular contains phosphonyl group, contain the organic of phosphonyl group Thing is ethylenediamine tetramethylene phosphonic acid, 1-hydroxy ethylidene-1,1-diphosphonic acid, diethylene triamine pentamethylene phosphonic, the methene phosphine of diethylenetriamine five Acid or ATMP;Organic matter salt containing phosphonyl group is alkali metal salt (particular certain cancers, sylvite);Organic phosphoric acid The molar ratio 50~100: 5~25: 1~5 that class compound, Schiff bases compound are compounded with N, S heterocyclic compound;
Schiff bases compound has contracting sulfamido schiff bases, contracting amino acids schiff bases, contracting Thiourea schiff bases, contracting acid amides Class schiff bases etc., wherein it is preferred that contracting amino acids schiff bases;
N, S heterocyclic compounds are 2- aminobenzimidazoles, BTA, 2-mercaptobenzothiazole or uric acid.
Using the organophosphor acid compounds of one or more, one or more kinds of Schiff bases compounds and one Kind or more than one N, S heterocyclic compound compounded, in three kinds of compositions the control of every kind of Ingredient Amount 0.001~ 500mmol/L, preferably 0.01~100mmol/L.
The present invention can use one or more kinds of nonionic surfactants, preferably APES type, High-carbon fatty alcohol polyoxyethylene ether type and fatty acid methyl ester ethoxylate type.The above-mentioned total dosage control of surfactant is 0.01 ~100mmol/L, more preferably 0.1~50mmol/L.
Described halogen or halide salts, metallic surface passivating film is dissolved by active anion, so as to form new guarantor Cuticula, its salt are mainly alkali metal salt, particular certain cancers, sylvite.
The Ni-Pd metal conditioners of the material composition, it is characterised in that the pH controls of surface conditioning agent 1~ 10, preferably 1~7.
A kind of Ni-Pd metals, nickel dam is obtained using electroless form, and palladium is replaced by chemistry on nickel coating surface Method obtain a Ceng Ba islands, part of nickel exposed metal/bare metal is left in air in the Ni-Pd metal surfaces obtained by the technique.
When the surface conditioning agent using the present invention is surface-treated to metal, epithelium is formed using dipping or spraying Method, preferably infusion process.Shape for metal to be treated can be any shape such as wire, plate, band, granular, by using The surface conditioning agent of the present invention, after being surface-treated to Ni-Pd metal surfaces, it can be made to obtain excellent in oxidation resistance, weldering The characteristics of expecting wetability.
Corrosion inhibiter main component organophosphor acid compounds of the present invention, Schiff bases compound and N, S are miscellaneous The metallic atom of cycle compound energy metal material surface is attracted to metal material table by different degrees of coordination Face, at the same the types of functionality group that carries of such compound by mutual synergistic function can metal material surface formed with Machine epithelium and play corrosion inhibition.For the present invention by testing after 155 DEG C are incubated 20 hours, its welding performance keeps good.
Specific embodiment
Embodiment 1~6;Comparative example 1~8
13 kinds of surface conditioning agents are configured, after being incubated 20 hours at 155 DEG C after its active ingredient and film forming, bonding test result Such as table 1.
Ni-Pd metal surfaces are obtained on substrate to obtain by the following method.
Alkali cleaning oil removing (10%NaOH, 2 minutes) → washing (normal temperature, 1 minute) → pickling (10%H2SO4, 1 minute) → water Washing (normal temperature, 1 minute) → microetch (potassium peroxydisulfate 0.37mol/L, sulfuric acid 20ml, 3 minutes), → washing (normal temperature, 1 minute) → is living Change (YC-42,3 minutes) → washing (normal temperature, 1 minute) → chemical nickel plating (YC-51M 100mL/L, YC-51A 48mL/L, YC- 51D 4mL/L, 84 DEG C, 8 minutes) → washing (normal temperature, 1 minute) → chemical palladium immersing (PdCl29mmol/L, ammoniacal liquor 80ml/L, lemon Lemon acid 26mmol/L, OP-100.01ml/L, 40 DEG C, 30 minutes) → washing (normal temperature, 1 minute) → drying
The configuration of surface conditioning agent:
Corresponding surfactant is weighed by formula to be dissolved in distilled water, stirring is abundant to dissolving, and is dissolving sufficient table Added in existing activator solution and be formulated the desired amount of all kinds of corrosion inhibiter materials, stirring is abundant to dissolving, and adjusts pH, static 30min Constant volume afterwards.
Obtained metal is impregnated 0.5~15 minute in the surface conditioning agent configured at 0~100 DEG C, preferably 25~ Impregnated 1.5~10 minutes at 50 DEG C.
To 10, the film forming sample of each embodiment, after being handled 20 hours at 155 DEG C, bonding test is carried out, bonding is surveyed The resistance to elevated temperatures and the welding performance after high-temperature process of the direct reacting metal of test result.
Bonding equipment:Hughes 2460II
Test equipment:Dages Series 4000
Beat gold thread:K&S Mod.4129,
Bonding pressure:5cN
Bonding time:5sec
Pulling force about 30cN
The different surface treatment agent of table 1,20 hours bonding test results are incubated at 155 DEG C after its active ingredient and film forming
By table above it can be seen that not reaching required effect as corrosion inhibiter active ingredient using schiff bases, work as schiff bases With significant effect can be obtained when ATMP, 2- aminobenzimidazole collective effects, when Schiff alkali concn increases Pull-off force increases, while the proportioning of each component can reach excellent effect in preferred scope, otherwise DeGrain;Adopt The effect using nonionic Surfactant can not be reached with the effect of anionic surfactant sodium dodecylbenzene sulfonate;Make It is more notable than using stearic acid welding effect with N, S heterocyclic compound;Metal after processed by the invention compared to comparative example 6 Effect is more excellent.

Claims (5)

1. a kind of Ni-Pd metal conditioners, it is characterised in that be mainly made up of corrosion inhibiter and nonionic surfactant;Institute Corrosion inhibiter is stated, is answered by organophosphor acid compounds, Schiff bases compound and N, S heterocyclic compound and halogen or halide salts With obtaining;Described organophosphor acid compounds are the organic matter or its salt that intramolecular contains phosphonyl group, wherein containing phosphonic acids The organic matter of group is ethylenediamine tetramethylene phosphonic acid, 1-hydroxy ethylidene-1,1-diphosphonic acid, diethylene triamine pentamethylene phosphonic, divinyl three One or more in the methylenephosphonic acid of amine five, ATMP;Organic matter salt containing phosphonyl group contains to be described There are the one or more in the organic matter alkali metal salt of phosphonyl group;
Described Schiff bases compound is contracting sulfamido schiff bases, contracting amino acids schiff bases, contracting Thiourea schiff bases or contracting Amide-type schiff bases;
N, S heterocyclic compounds are 2- aminobenzimidazoles, BTA, 2-mercaptobenzothiazole or uric acid;
The molar ratio 50~100: 5 that organophosphor acid compounds, Schiff bases compound are compounded with N, S heterocyclic compound ~25: 1~5;
In three kinds of organophosphor acid compounds, Schiff bases compound and N, S heterocyclic compound compositions, the dosage of every kind of composition is equal Control is in 0.001~500mmol/L.
2. Ni-Pd metal conditioners as claimed in claim 1, it is characterised in that described nonionic surfactant For APES, high-carbon fatty alcohol polyoxyethylene ether or fatty acid methyl ester ethoxylate.
3. Ni-Pd metal surfactants as claimed in claim 1 or 2, it is characterised in that using one or more kinds of Nonionic surface active agent, its total dosage control is in 0.01~100mmol/L.
4. Ni-Pd metal surfactants as claimed in claim 1 or 2, it is characterised in that described metal conditioner PH control 1~10.
5. Ni-Pd metal surfactants as claimed in claim 4, it is characterised in that described metal conditioner PH is controlled 1~7.
CN201510375623.1A 2015-06-30 2015-06-30 Ni-Pd metal surface treatment agent Expired - Fee Related CN104894569B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1424435A (en) * 2002-12-20 2003-06-18 上海电力学院 Composite corrosion inhibitor containg mercapto-heterocyclic compound and alkali metal iodide
JP4518507B2 (en) * 2004-03-05 2010-08-04 日鉱金属株式会社 Metal surface treatment agent
CN102782189A (en) * 2010-12-01 2012-11-14 吉坤日矿日石金属株式会社 Surface treatment agent for pd or alloy mainly composed of pd, and surface coating layer structure of copper surface
CN103849879A (en) * 2014-03-26 2014-06-11 西安石油大学 Gemini type bimolecular Sciff base waste water corrosion inhibitor and preparation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1424435A (en) * 2002-12-20 2003-06-18 上海电力学院 Composite corrosion inhibitor containg mercapto-heterocyclic compound and alkali metal iodide
JP4518507B2 (en) * 2004-03-05 2010-08-04 日鉱金属株式会社 Metal surface treatment agent
CN102782189A (en) * 2010-12-01 2012-11-14 吉坤日矿日石金属株式会社 Surface treatment agent for pd or alloy mainly composed of pd, and surface coating layer structure of copper surface
CN103849879A (en) * 2014-03-26 2014-06-11 西安石油大学 Gemini type bimolecular Sciff base waste water corrosion inhibitor and preparation method thereof

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