| 摘要 |
An aluminizing composition includes an aluminum-based powder, an inert organic pyrolysable thickener, and a binder selected from the group consisting of colloidal silica, at least one organic resin, and combinations thereof. A method for aluminizing an internal passage of a metal substrate comprises injecting the organic- based aluminizing composition into the internal passage, heat treating the composition under conditions sufficient to remove volatile components from the composition, to cause diffusion of aluminum into surface regions of the internal passage, and to cause decomposition of at least some pyrolysable thickener particles, and burnishing excess material from the internal passage.
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