MIMプロセスにおける超臨界二酸化炭素による脱脂法 -超臨界脱脂プロセスとバインダーの脱脂条件- Supercritical CO_2 Debinding Method in MIM Process -Debinding Condition and Process in Supercritical Debinding-
MIM is an important method in the metal forming technology. Though, this process is incomplete, and still has problems in each processing step. Especially in the debinding step, there are many problems. In an actual producing process, the thermal debinding method is still used, and this method needs long debinding time. Also, the size of products is limited, and the metal powder is oxidized in this method. As a method to overcome these problems, the solvent debinding process is used recently. This method is an efficient debinding method. Though organic solvents are used in this method, they are poisonous. These solvents will harm human health and environment. For this reason, a debinding method which uses super critical dioxide(CO<SUB>2</SUB>) is desirable. Using this method, quick debinding is possible, and a thick green body can be debinded. Moreover, the solvent used in this method is safe and harmless for environment.
粉体および粉末冶金 43(10), 1188-1192, 1996-10-15
Japan Society of Powder and Powder Metallurgy