在真空的不锈钢泡沫先锋的热 debinding 行为被学习并且与那相比在氢。毛孔隧道的形成原因被分析。实验结果证明在真空的文件夹移动率在氢比那高。在真空,没有毛孔尺寸和毛孔形态学的变化,有机化合物能为样品有效地被移开。在泉华 pre 以后,某 sintering 颈形式和样品有某些紧张。因为毛状的力量,有起初增加的温度的起始的表面毛孔形式,然后内部融化文件夹被把发成送气音形成起始的毛孔,金属粉末同时与文件夹的迁居重排。
The thermal debinding behavior of stainless steel foam precursor in vacuum was studied and compared with that in hydrogen.The formation cause of pore channel was analyzed.The experiment results show that the binder removal rate in vacuum is higher than that in hydrogen.In vacuum,the organic compounds can be removed effectively without change of pore size and the pore morphology for the sample.After pre-sintering,some sintering necks form and the sample has certain intensity.The initial surface pore forms with the temperature increasing at first,and then the internal melting binder is aspirated to form initial pore because of the capillary force and the metal powders re-arrange with the migration of binder at the same time.