Re: Why diameter effect Cluster oxide formation?

Posted by Hong Wang ( on 14:33:06 09/01/06

In Reply to: Re: Cluster oxide in Inco718 posted by Gordon England

Thanks for Gordon's explaination. That works to me! CFD of high speed spray coating concludsthat fine particles are ejected sideways parallel to substrate.
The next question is: why diameter effects most?
what happened to our spary part setup is: the larger the part (diameter), the more chance that the center of part off the center of the turntable. So I reason it to be the variation of the stand off distance. If spray a flat sample attached on a ring, the various stand-off from center of the sample to the edge is obvirous. On the other hand, is the spray really so sensitive to small change of stand-off distance?
Expecting Gordon and othe experts to share your ideas
Thanks in advance

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