Fabrication of an Yttria Thin-Wall Tube by Radial Magnetic Pulsed Compaction of Powder-Based Tapes

Abstract

Highly dense and homogeneous yttria (Y 2 O 3 ) thin-wall tubes have been successfully fabricated by applying tape-casting and radial magnetic pulsed compaction (RMPC) followed by thermal sintering. Since a homogeneous density distribution was obtained in the RMPCed compact, by using the Y 2 O 3 -based tape instead of a stuck of raw powder, cracking and bending were inhibited throughout the process up to the final sintered body. The relative density of the resultant tube reached 99.9%, and the structure was very fine with grain sizes of 2$5 mm. Moreover, when the granulated powder was used as the precursor of the tape, the thermal densification was promoted due to its enhanced sinterability as compared to the raw powder.

Manufacturing Technologies of Polymer Composites—A Review

“…Research on magnetic pulse powder compaction technology is mainly aimed at metal or metal composite materials [ 134 , 135 , 136 , 137 , 138 ], inorganic non-metallic materials [ 139 , 140 , 141 ] and other powder materials with good electrical and thermal conductivity and mainly studies the influence of process parameters on the quality of the compact, such as the discharge energy [ 57 ], impact speed and load [ 142 ], friction coefficient between powder and die [ 133 ], compaction temperature [ 135 ], number of compactions [ 143 ], compaction method [ 131 ] and initial relative density [ 144 ]. There are very few discussions on polymers or polymer composites.…”

Polymer-based graphene composite molding: a review

“…Previous studies have primarily focused on metals, metal composites, [49][50][51][52][53] inorganic nonmetallic materials, [54][55][56] and other powder materials with good conductivity and thermal conductivity. Few people have studied the electromagnetic molding of polymers and their composites.…”

Fabrication and plasma resistance of Y2O3 ceramics

“…It has been particularly difficult to fabricate a Y 2 O 3 thin-wall tube with a stepped shape on its outer diameter, i.e., etching gas jet nozzles that are used in semiconductor processing chambers. A notable problem in the fabrication of such complexly shaped Y 2 O 3 parts using conventional powder processing is the formation of cracks during sintering, which is primarily caused by an inhomogeneous powder packing in green compacts, particularly near the diametrical stepped shape [8]. It is well-known that Y 2 O 3 is a poor-sinterable material and generally shows abnormal grain growth during the sintering process.…”