磁性材料及器件
磁性材料及器件
자성재료급기건
JOURNAL OF MAGNETIC MATERIALS AND DEVICES
2013年
3期
29-32
,共4页
磁流体%水渗入%磁场%磁性粒子
磁流體%水滲入%磁場%磁性粒子
자류체%수삼입%자장%자성입자
magnetic fluid%water infiltration%magnetic field%magnetic particle
借助热失重分析(TGA)方法研究了外加磁场强度、磁流体中磁性粒子体积分数、试验时间对去离子水和盐水向磁流体中渗入量的影响。结果表明,在水冲刷的条件下,随着外加磁场强度的增高,磁流体内部水含量逐渐增加;随着磁流体中磁性粒子体积分数的增大,渗入磁流体内的水份呈现下降的趋势;水中盐离子的存在将促进水向磁流体的渗入,且随着水冲刷时间的延长,水渗入磁流体内的速率呈缓慢降低的趋势。
藉助熱失重分析(TGA)方法研究瞭外加磁場彊度、磁流體中磁性粒子體積分數、試驗時間對去離子水和鹽水嚮磁流體中滲入量的影響。結果錶明,在水遲刷的條件下,隨著外加磁場彊度的增高,磁流體內部水含量逐漸增加;隨著磁流體中磁性粒子體積分數的增大,滲入磁流體內的水份呈現下降的趨勢;水中鹽離子的存在將促進水嚮磁流體的滲入,且隨著水遲刷時間的延長,水滲入磁流體內的速率呈緩慢降低的趨勢。
차조열실중분석(TGA)방법연구료외가자장강도、자류체중자성입자체적분수、시험시간대거리자수화염수향자류체중삼입량적영향。결과표명,재수충쇄적조건하,수착외가자장강도적증고,자류체내부수함량축점증가;수착자류체중자성입자체적분수적증대,삼입자류체내적수빈정현하강적추세;수중염리자적존재장촉진수향자류체적삼입,차수착수충쇄시간적연장,수삼입자류체내적속솔정완만강저적추세。
The influence of magnetic field, concentration of mannetic particle, and stirring time on the infiltration of deionized and saline water into oil base magnetic fluids were investigated by TGA method. The results showed that the water infiltration into oil-base magnetic fluid increases and decreases with increasing magnetic field and volume fraction of magnetic particles, respectively Compared with the deionized water, the salt water has an unremarkable tends to inhibit water infiltration into oil-base magnetic fluid. But as the scouring time extends, the infiltration rate gradually reduces.