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首页> 外文会议>Powder metallurgy world congress amp; exhibition >Presureless Sintering of Stainless Steels/Zirconia Composite Layers Usable for Co-Powder Injection Moulding Process
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Presureless Sintering of Stainless Steels/Zirconia Composite Layers Usable for Co-Powder Injection Moulding Process

机译：可用于共粉末注射成型工艺的不锈钢/氧化锆复合层的无压力烧结

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摘要

Sintering is the most critical step in manufacturing of functional parts by co-powder injection molding. In the present work, we studied the sintering phenomena occurring during co-sintering of metal/ceramic composite layers. Nanostructured yttria-stabilized zirconia (3Y-TZP) was co-sintered with 430L stainless steel and chromium. The sintering response was studied by dilatometer analysis in isothermal and non-isothermal modes. The microstructure of the sintered specimens was studied by scanning electron microscopy (SEM), electron-probe microanalysis (EPMA) and micro-focused X-ray diffraction (MFXRD). The strength of the joint was also determined by a shear-punch method. It is shown that sintering atmosphere plays a critical role in the co-sintering process. The formation of liquid phase could significantly improve the joint integrity via an improvement in the wettability and self-induced infiltration of the melt into the surface porosity of the ceramic component. A significant improvement in the joint strength is thus achieved.
机译：烧结是通过共粉注塑成型制造功能部件的最关键步骤。在目前的工作中，我们研究了金属/陶瓷复合层共烧结过程中发生的烧结现象。纳米结构的氧化钇稳定的氧化锆（3Y-TZP）与430L不锈钢和铬共烧结。通过膨胀计分析在等温和非等温模式下研究了烧结响应。通过扫描电子显微镜（SEM），电子探针显微分析（EPMA）和微聚焦X射线衍射（MFXRD）研究了烧结样品的微观结构。接头的强度也通过剪切法确定。结果表明，烧结气氛在共烧结过程中起着至关重要的作用。液相的形成可通过改善熔体的润湿性和自感应渗透入陶瓷组件表面孔隙的方式，显着改善接头完整性。由此实现了接头强度的显着改善。

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