粉料粒度对316L不锈钢多孔材料孔隙结构和透气性能的影响  

Effect of powdersizes on pore structure and permeability of 316 L stainless steel porous materials

作　　者：代丽娜[1] 杨万利[1] 张永辉[1] 肖志超[1] 金志浩[2] 

机构地区：[1]西安航天复合材料研究所超码科技有限公司,西安710025 [2]西安交通大学金属材料强度国家重点实验室,西安710049

出　　处：《粉末冶金技术》2016年第1期31-34,共4页Powder Metallurgy Technology

基　　金：陕西省科学技术研究发展计划资助项目(2014KJXX-11)

摘　　要：采用粉末冶金法制备316L不锈钢多孔透气材料,研究了不同不锈钢粉料粒度(D50=2.5μm,39.2μm,64.3μm)对多孔材料气孔率、孔径尺寸和透气性的影响。结果表明:随着粉料粒度的增加,多孔材料的气孔率和最大孔径增大,透气性降低,其中D50=2.5μm不锈钢粉料所制备的多孔材料透气性最高,达到4.79 m^3/(h·k Pa·m^2)。分析认为随着粉料粒度的增加颗粒在混料、成型和烧成工艺中的外形变化是导致多孔材料透气性反而随着粒度增加呈下降趋势的主要原因。316L stainless steel porous breathable materials were prepared by the powder metallurgy technology,and the effects of the different stainless steel powder sizes（ D50= 2. 5 μm,39. 2 μm,64. 3 μm） on the porosity,maximum pore size and permeability of porous materials were investigated. The results show that the porosity and maximum pore size of the porous materials increase and the permeability decrease with increasing particle sizes. The maximum value of permeability of the material prepared by D50= 2. 5 μm stainless steel powder is 4. 79 m^3/（ h·k Pa·m^2）. The analysis reveals that the necking formed by the aperture changing is the main factor of the permeability decreasing.

关 键 词：粉料粒度 316L不锈钢多孔材料 透气性 

分 类 号：TQ174.6[化学工程—陶瓷工业]