| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a composition a method for promoting aluminizing to an internal cooling passage without requiring a vapor phase aluminizing method. <P>SOLUTION: The aluminizing composition comprises: aluminum based powder; an inert thermally decomposable organic thickener; and a binder selected from colloidal silica, at least one kind of organic resin and their combination. The aluminizing method to the internal passage of a metal substrate comprises a process wherein the organic aluminizing composition is injected into an internal passage, the composition is heat-treated under suitable conditions, the volatile components are removed from the composition, the aluminum is diffused into the surface region of the internal passage, also, at least a part of the thermally decomposable thickener grains is decomposed, and next, the residual material is subjected to vanish finishing from the internal passage. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
