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Chemical plating solution for preparing long-lasting self-lubricating composite coating and chemical plating method thereof

A technology of chemical plating solution and composite coating, applied in liquid chemical plating, coating, metal material coating process, etc., can solve the problems of weak oxidation resistance, poor friction and wear resistance, poor corrosion resistance, low hardness, etc. , to achieve the effect of strong oxidation resistance, improved friction and wear resistance, and high hardness

Inactive Publication Date: 2006-09-06
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the long-term self-lubricating coating generally adopts nickel phosphorus / polytetrafluoroethylene (Ni-P / PTFE) or nickel phosphorus / molybdenum disulfide (Ni-P / MoS 2 ) Electroless plating solution preparation, when the product is used, there are deficiencies such as poor friction and wear resistance and corrosion resistance, low hardness, and weak oxidation resistance.

Method used

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  • Chemical plating solution for preparing long-lasting self-lubricating composite coating and chemical plating method thereof

Examples

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Effect test

Embodiment 1

[0033] A kind of chemical plating solution for preparing long-term self-lubricating composite coating, the composition and content of 1 liter (L) chemical plating solution are:

[0034] Nickel Sulfate (NiSO 4 ·7H 2 O) 20g,

[0035] Sodium tungstate (Na 2 WO 4 2H 2 O) 40g,

[0036] Sodium hypophosphite (NaH 2 PO 4 .2H 2 O) 18g,

[0037] Ammonium sulfate ((NH 4 ) 2 SO 4 ) 20g,

[0038] Sodium citrate (Na 3 C 6 h 5 o 7 2H 2 O) 90g,

[0039] Lactic acid (C 3 h 6 o 3 ) 3ml,

[0040] PTFE (60% suspoemulsion) 6ml,

[0041] Molybdenum disulfide (MoS 2 ) 8g,

[0042] Aluminum acetate (Pb(AC) 2 ) 10 mg;

[0043] The preparation method of above-mentioned electroless plating solution is:

[0044] 1. Weigh the metered nickel sulfate (NiSO 4 ·7H 2 O), sodium tungstate (Na 2 WO 4 2H 2 O), sodium hypophosphite (NaH 2 PO 4 .2H 2 O), ammonium sulfate [(NH 4 ) 2 SO 4 ], sodium citrate (Na 3 C 6 h 5 o7 2H 2 O), lactic acid (C 3 h 6 o 3 ), molybdenum d...

Embodiment 2

[0052] A kind of chemical plating solution for preparing long-term self-lubricating composite coating, the composition and content of every 1 liter (L) chemical plating solution are: nickel sulfate (NiSO 4 ·7H 2 O) 30g, sodium tungstate (Na 2 WO 4 2H 2 O) 55g, sodium hypophosphite (NaH 2 PO 4 .2H 2 O) 22g, ammonium chloride ((NH 4 Cl) 26g, sodium citrate (Na 3 C 6 h 5 o 7 2H 2 O) 100g, lactic acid (C 3 h 6 o 3 ) 6ml, PTFE (60% suspoemulsion) 8ml, MoS 2 10g, lead nitrate (Pb(NO 3 ) 2 ) 16 mg; add water (preferably distilled or deionized water) to 1 liter. The dipping pH value is 8, the temperature is 85-92°C, and the plating time is 10-60 minutes. Others are the same as in Example 1, omitted.

Embodiment 3

[0054] An electroless plating solution for preparing a long-term self-lubricating composite coating, the composition and content of every 1 liter (L) of the electroless plating solution are: nickel chloride (NiCl 2 ·6H 2 O) 35g, sodium tungstate (Na 2 WO 4 2H 2 O) 65g, sodium hypophosphite (NaH 2 PO 4 .2H 2 O) 25g, ammonium sulfate ((NH 4 ) 2 SO 4 )38g, sodium citrate (Na 3 C 6 h 5 o 7 2H 2 O) 110g, lactic acid (C 3 h 6 o 3 ) 8ml, PTFE (60% suspoemulsion) 12ml, MoS 2 15g, thiourea 20mg; add water (preferably distilled water or deionized water) to 1 liter. The PH value of immersion plating is 9.5, the temperature is 85-92°C, and the plating time is 10-60 minutes.

[0055] Others are the same as in Example 1, omitted.

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Abstract

The invention relates the preparing long-acting self-lubricating composite deposite chemical plating liquid, comprising the following characters: 20-35g / L nickel sulfate, 30-65g / L sodium tungstate, 18-25g / L sodium hypophosphite, 20-38g / L ammonia sulfate, 90-110g / L sodium citrate, 3-8ml / L lactic acid, 6-12ml / L 60% politef suspending liquid, 8-15g / L molybdenum disulfide, and 10-20mg / L stabilizing agent. The method comprises the following steps: cleaning and activating the surface of work, putting the work into chemical plating liquid at 8-9.5 PH and 85-92Deg.C for 10-60 min. The politef and molybdenum disulfide made by the said method has the advantages of homogeneous thickness, good association, high hardness, strong blocking resistance and good corrosivity.

Description

technical field [0001] The invention belongs to an electroless plating solution composition and an electroless plating method, in particular to an electroless plating solution and an electroless plating method for preparing a long-acting self-lubricating composite coating. Background technique [0002] Because the coating prepared by electroless nickel plating has excellent characteristics such as wear resistance, corrosion resistance, uniform coating and good magnetic properties, it has long received great attention from the industry and has been widely used in machinery, electronics, instrumentation, light industry, transportation, etc. Widely used in transportation and other industries. In the prior art, the long-term self-lubricating coating generally adopts nickel phosphorus / polytetrafluoroethylene (Ni-P / PTFE) or nickel phosphorus / molybdenum disulfide (Ni-P / MoS 2 ) Electroless plating solution preparation, when the product is used, there are deficiencies such as poor f...

Claims

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Application Information

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IPC IPC(8): C23C18/16C23C18/18C23C18/31
Inventor 刘继光陈奎儒申蓉蓉宋红文
Owner SOUTHWEAT UNIV OF SCI & TECH
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