Patent ID: 7370848

Claim:
A vaporization chamber for a substrate processing system that comprises: a main body made of aluminum; the main body defining a first inner surface, which defines, at least in part, a cavity; a cover member that is also made of aluminum, the cover member defining a second inner surface, which also defines, at least in part, the cavity; the cover member comprising a carrier gas cover inlet, a liquid source cover inlet, a source cover outlet which extend from a first outer surface through the cover member to the second inner surface; and a transition member that is made of stainless steel and has a transition outer surface and a transition inner surface; the transition inner surface being aluminum cladded; the cover member comprising a carrier gas cover inlet, a liquid source cover inlet, a source cover outlet which extend from a first outer surface through the cover member to second inner surface; the transition inner surface and the cover outer surface being welded together.