纳米Fe_3O_4磁流体对人工裂纹缺陷试块的磁粉检测研究  

Nano-Fe_3O_4 Magnetic Fluids for Magnetic Particle Testing Research on Artificial Crack Test Block

作　　者：史红兵[1] 洪勇[1,2] 舒霞[2] 吴玉程[2] 张俊斌[1] 

机构地区：[1]安徽省特种设备检测院,合肥230051 [2]合肥工业大学,合肥230009

出　　处：《无损探伤》2016年第1期25-26,48,共3页Nondestructive Testing Technology

基　　金：安徽省质量技术监督局科技支撑项目(13zj370022)

摘　　要：制备了平均粒径为18nm左右的Fe_3O_4水基磁流体,利用XRD、TEM、VSM等测试手段对制备的样品进行了表征。利用机械加工、焊接、打磨等工序制作人工缺陷裂纹试块。将制备的纳米Fe_3O_4水基磁流体应用于所制作试块的磁粉检测,裂纹缺陷的磁痕显示表明:18nm左右的Fe_3O_4水基磁流体能够检测出已知裂纹缺陷且其磁痕显示稍优于市场购买的常规磁流体。The preparation of 18 nm Fe_3O_4 water-based magnetic fluid was by chemical co-precipitation and characterization by TEM,VSM and XRD.Using mechanical,welding,grinding processing to construct artificial crack test block,and we are the first to utilize nano-Fe_3O_4 water-based magnetic fluid to the magnetic particle testing on the block.The magnetical testing indicates 18 nm Fe_3O_4 water-based magnetic fluid is slightly better than the conventional magnetic particle that can buy in the market.

关 键 词：纳米材料 Fe3O4磁流体 磁痕 磁粉检测 

分 类 号：TG115.28[金属学及工艺—物理冶金]