초록 ▼

A single step is relied on in the canning process for hot isostatic pressing metallurgy composites. The composites are made from arc-sprayed and plasma sprayed monotape. The HIP can is of compatible refractory metal and is sealed at high vacuum and temperature. This eliminates out-gassing during hot

A single step is relied on in the canning process for hot isostatic pressing metallurgy composites. The composites are made from arc-sprayed and plasma sprayed monotape. The HIP can is of compatible refractory metal and is sealed at high vacuum and temperature. This eliminates out-gassing during hot isostatic pressing.

대표청구항 ▼

A method of canning a composite formed from a sprayed porous monotape having trapped contaminants and gas prior to hot isostatic pressing comprising the steps of enclosing said composite with a metal frame adjacent the outer peripheral surface thereof, interposing said composite and frame between sp

A method of canning a composite formed from a sprayed porous monotape having trapped contaminants and gas prior to hot isostatic pressing comprising the steps of enclosing said composite with a metal frame adjacent the outer peripheral surface thereof, interposing said composite and frame between spaced face sheets to form an assembly, positioning said assembly in a die, loading said die and assembly into a vacuum hot press, heating said composite in a vacuum to a first temperature, sufficiently high to cause trapped gas to leave the composite and contaminants to burn off, maintaining said composite at said first temperature while applying a pressure load to said die, heating said composite to a second temperature that is substantially higher than said first temperature while increasing said pressure load, said second temperature and pressure being raised to values sufficient to deform said metal frame, maintaining said composite at said second temperature while deforming said frame and producing a solid state diffusion weld between said frame and said face sheets, and partially densifying said composites thereby establishing the geometry of the same.