CAJ | 학술논문

将ZrO_2和316 L不锈钢浆料分别在圆柱模具外表面上多次流延制备出了氧化锆和316L不锈钢管,研究了在模具曲面上流延时浆料粘度对管壁生坯层均匀性的影响,然后将6种不同比例的ZrO_2/316L不锈钢浆料按照ZrO_2体积含量减小的顺序分别曲面流延成型,通过优化各梯度层粘合剂含量来降低管壁层间由于成分不同而引起的残余应力,得到外形规则的ZrO_2/316L不锈钢梯度管样品.结果表明,当浆料粘度为1200～2000 mPa·s时,在直径为1 cm的圆柱模具外表面流延所得的生坯层均匀,厚度误差≦±5%;在满足浆料粘度的前提下,粘合剂比例应随着ZrO_2含量的增加而增加,来减小各梯度层收缩的差异,从而降低了层间的残余应力.
장ZrO_2화316 L불수강장료분별재원주모구외표면상다차류연제비출료양화고화316L불수강관,연구료재모구곡면상류연시장료점도대관벽생배층균균성적영향,연후장6충불동비례적ZrO_2/316L불수강장료안조ZrO_2체적함량감소적순서분별곡면류연성형,통과우화각제도층점합제함량래강저관벽층간유우성분불동이인기적잔여응력,득도외형규칙적ZrO_2/316L불수강제도관양품.결과표명,당장료점도위1200～2000 mPa·s시,재직경위1 cm적원주모구외표면류연소득적생배층균균,후도오차≦±5%;재만족장료점도적전제하,점합제비례응수착ZrO_2함량적증가이증가,래감소각제도층수축적차이,종이강저료층간적잔여응력.
ZrO_2 pipe and SUS316L pipe were fabricated by multi-tape casting on the curved surface of a cylinder using ZrO_2 and SUS316L slurries. Influence of the viscosity of the slurry on thickness uniformity of green sheets was investigated. And then six kinds of slurries were cast on the curved surface in the order that the ZrO_2 content was reduced sequentially. ZrO_2/ SUS316L graded pipe with regular shape was successfully obtained by inducing the residual stress as a result of optimizing shrinkage. The experiment results show that the thickness error was less than ±5% when the viscosities of slurries are range from 1200 to 2000 mPa·s. In order to reduce the residual stress, the binder content should be increased with increasing ZrO_2 content so that the difference of shrinkages is decreased.