Resources Contact Us Home
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
Arbitration circuit to arbitrate conflict between read/write command and scan command and display driver integrated circuit having the same
Weighted determination in configuration management systems
Battery loading and unloading mechanism
Multi-layer, microporous polyolefin membrane, its production method, battery separator and battery
Method and apparatus for transmitting and receiving a signal in a communication system
Polyester resin for toner, electrostatic charge image developing toner, electrostatic charge image developer, toner cartridge, process cartridge, image forming apparatus, and image forming met
Support for a portable electronic device
  Randomly Featured Patents
Electrophotographic device capable of performing an imaging operation and a fusing operation at different speeds
Diaper having an improved leg cuff
Container transport and manipulator for use with a label or screen printing applier
High-frequency signal transmission circuit device
Process for producing liquid crystal optical device
Process for preparing efavirenz polymorph
System and method for orienting seismic energy sources and receivers to yield discriminated horizontal and vertical shear waves
Activity sensor for pacemaker control
Axial flow fan motor support for use in automobiles and air conditioners