Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Surface treatment composition and method for removing Si component and reduced metal salt produced on the aluminum die cast material in etching process










Image Number 2 for United States Patent #7405189.

A surface treatment composition and method for removing Si and reduced metal salt produced during etching of an aluminum die cast material ("ALDC material") without generation of nitrogen oxide (NOx) or hydrogen fluoride (HF). In surface treatment of an ALDC material containing Si, Fe, Cu, Mn, Mg, Zn and Ni, the surface treatment composition for removing Si and reduced metal salt from the surface of the ALDC material after etching comprises hydrogen peroxide 300 to 950 g/l, fluorine ion-containing inorganic salt 1 to 300 g/l and balance water. The surface treatment method for removing Si and reduced metal salt from the surface of an ALDC material after etching comprises the step of dipping the ALDC material into the above described surface treatment composition. The aforementioned surface treatment composition effectively removes the Si and reduces metal salt impurities from the surface of the ALDC material without any problems such as NOx or HF gas which is harmful to the human and waste water treatment. Further, residue oil is also removed from the ALDC material.








 
 
  Recently Added Patents
System and method for enhanced artificial bandwidth expansion
Radiation-curable ink composition, ink jet recording method, and recorded matter
Fuel cell support structure
Stain-blocking aqueous coating composition
Redundant power delivery
Optical navigation device with image sensor and inner housing
Linked area parameter adjustment for spinal cord stimulation and associated systems and methods
  Randomly Featured Patents
System for a combined error correction code and cyclic redundancy check code for a memory channel
Transient voltage protection device, material, and manufacturing methods
Circuit configuration for monitoring a plurality of coils
Embolization
Latch actuator
Determining bleed valve failures in gas turbine engines
Container for the receiving and dispensing of animal rearing and feeding materials, particularly for watering young animals
Process for producing mesophase pitch
Key-break and record-loop processing in parallel data transformation
Semiconductor apparatus