Method of improving corrosion resistance of stainless steel...

Cleaning and liquid contact with solids – Processes – Metal base work – acid treating

Reexamination Certificate

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C134S002000, C134S003000, C134S026000, C134S028000, C134S029000

Reexamination Certificate

active

07850786

ABSTRACT:
Described is a space-conserving integrated fluid delivery system particularly useful for gas distribution in semiconductor processing equipment. The system includes integrated fluid flow network architecture, and may include, in addition to a layered substrate containing fluid flow channels, various fluid handling and monitoring components. The layered substrate is diffusion bonded. Subsequent to diffusion bonding, a stainless steel diffusion bonded part may advantageously be treated to enhance corrosion resistance using a series of steps designed to bring more chromium to the surface of the steel.

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ASTM A480/A480M-03B “Standard Specification for General Requirements for Flat-Rolled Stainless and Heat-Resisting Steel Plate, Sheet, and Strip”. ASTM International. Jun. 2003.

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