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Fast chemical plating liquid of rare-earth-nickel-molybdenum-phosphorus alloy at low-temperature

An electroless plating solution and electroless plating technology, applied in liquid chemical plating, metal material coating process, coating, etc., can solve problems such as high temperature, low chemical deposition rate, and large coating stress

Inactive Publication Date: 2007-11-07
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The performance of the multi-element alloy coating is better than that of a single nickel-phosphorus coating, especially in terms of electromagnetic properties. The nickel-molybdenum-phosphorus alloy coating is very effective in memory elements and resistors, and is an ideal functional material. Tungsten, molybdenum The reserves in our country are extremely rich. Molybdenum and tungsten are elements of the same group. Their structures and properties are very similar and can be substituted for each other. Substituting molybdenum for tungsten can reduce costs and obtain alloy coatings with similar properties at the same time. Rare earths have unique physical and chemical properties. Known for producing significant effects in small amounts, it is widely used in the field of material science. However, the application of rare earths in surface treatment of materials is relatively late, but it develops rapidly
[0003] At present, the preparation of nickel-molybdenum-phosphorus alloy coating requires high temperature, low chemical deposition rate and high coating stress, but there is no report on the chemical composite plating of adding rare earth to nickel-molybdenum-phosphorus alloy

Method used

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  • Fast chemical plating liquid of rare-earth-nickel-molybdenum-phosphorus alloy at low-temperature
  • Fast chemical plating liquid of rare-earth-nickel-molybdenum-phosphorus alloy at low-temperature
  • Fast chemical plating liquid of rare-earth-nickel-molybdenum-phosphorus alloy at low-temperature

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Nickel Chloride (NiCl 2 ·6H 2 O) 30 g / l

[0046] Sodium hypophosphite (Na 2 h 2 PO 2 ·H 2 O) 20 g / l

[0047] Sodium molybdate (Na 2 MoO 4 2H 2 O) 0.6 g / l

[0048] Sodium Hydroxide (NaOH) 0.5 g / L

[0049] Sodium citrate (Na 3 C 6 h 5 o 7 2H 2 O) 15 g / l

[0050] Sodium Lactate (NaC 3 h 5 o 3 ) 9 g / L

[0051] Sodium glycolate (NaC 2 h 3 o 3 ) 4 g / L

[0052]Succinic acid (C 4 h 6 o 4 ) 3 g / l

[0053] Rare earth (CeO 2 ) 1 g / l

[0054] Rare earth (La 2 o 3 ) 1 g / l

[0055] Thiourea 1.2×10 -3 g / L

[0056] pH 8.0

[0057] Bath temperature 80°C

[0058] Add water to 1000ml

Embodiment 2

[0060] Nickel Chloride (NiCl 2 ·6H 2 O) 25 g / l

[0061] Sodium hypophosphite (NaH 2 PO 2 ·H 2 O) 22 g / l

[0062] Sodium molybdate (Na 2 MoO 4 2H 2 O) 0.2 g / l

[0063] Sodium carbonate (Na 2 CO 3 ) 4 g / L

[0064] Sodium citrate (Na 3 C 6 h 5 o 7 2H 2 O) 13 g / l

[0065] Sodium Lactate (NaC 3 h 5 o 3 ) 9 g / L

[0066] Glycolic acid (C 2 h 3 o 3 ) 3 g / l

[0067] Succinic acid (C 4 h 6 o 4 ) 3 g / l

[0068] Rare earth (CeO 2 ) 1 g / l

[0069] Rare earth (La 2 o 3 ) 3 g / l

[0070] Thiourea 1.2×10 -3 g / L

[0071] pH 7.5

[0072] Bath temperature 75°C

[0073] Add water to 1000ml

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Abstract

A chemical coating solvent dispensation of alloy of rare-earth, Ni, Mo and P. It contains nickel chloride, natrium phosphate, rare-earth, citric acid / natrium citricum, glycollic acid / natrium glycolate, butane diacid, NaOH / Na2CO3 and thiosemicarbazide. pH is 7.0-8.5. T is 65-85 DEG C. The temperature of coating solvent is reduced obviously. Deposition speed is improved significantly. It is indicated that crystal cell is small and compact from results of stereoscan photograph. The coating solvent has good stability and can be used wildly.

Description

technical field [0001] The invention relates to rare earth-nickel-molybdenum-phosphorus alloy electroless plating in the field of material surface treatment, in particular to an electroless plating solution formula for rare earth-nickel-molybdenum-phosphorus alloy plating on the surface of metal materials by a surface chemical treatment method. Background technique [0002] The performance of the multi-element alloy coating is better than that of a single nickel-phosphorus coating, especially in terms of electromagnetic properties. The nickel-molybdenum-phosphorus alloy coating is very effective in memory elements and resistors, and is an ideal functional material. Tungsten, molybdenum The reserves in our country are extremely rich. Molybdenum and tungsten are elements of the same group. Their structures and properties are very similar and can be substituted for each other. Substituting molybdenum for tungsten can reduce costs and obtain alloy coatings with similar properties...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C18/50
Inventor 陈永福肖顺华张海军任玮项卫胜
Owner GUILIN UNIVERSITY OF TECHNOLOGY