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首页> 外文会议>Conference of the South African Advanced Materials Initiative >Spark plasma sintered Ti6A14V-Zr02 bio-composites: optimization of ball milling and turbula mixing of powders and their subsequent sintering parameters
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Spark plasma sintered Ti6A14V-Zr02 bio-composites: optimization of ball milling and turbula mixing of powders and their subsequent sintering parameters

机译：火花等离子体烧结Ti6a14V-ZR02生物复合材料：优化粉末球磨和涡轮晶晶混合及其随后的烧结参数

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摘要

The use of Ti6A14V as a biomaterial has been limited due to the dissociation of V and Al ions into the surrounding environment which can cause inflammations, cell damage and toxicity. To prohibit these undesirable challenges, the addition of ZrO2 into Ti6Al4V was proposed because Zr02 is biocompatible, it has good wear and corrosion resistant properties, it has low affinity to bacterial colonization and it has high fracture toughness.The aim of this work is to determine the optimum powder synthesising parameters by Tubular mixer and ball mill for fabrication of sintered composites . Powder mixtures were prepared by 49 rpm,72 rpm and 74rpm for 2, 4 and 8 hours followed by spark plasma sintering at 1100 °C at heating rate of 100 °C/min for 10 min and pressure of 50 MPa.from the results obtained it was discovered that Tubular mixing of 90 Vol% Ti6A14V and 10 Vol% ZrO2 at 72 rpm and ball milling of 90 Vol% Ti6Al4V and 10 Vol% ZrO2 at 74rpm speed have proved to produce homogeneous admixed powders, which can further produce fully dense SPS compacts with higher microhardncss values.
机译：作为生物材料的用途的Ti6Al4V已经由于V和Al离子的离解到周围环境中可引起炎症，细胞损伤和毒性的限制。禁止这些不希望的挑战，添加的ZrO 2成的Ti6Al4V提出因为的ZrO 2是生物相容的，它具有良好的抗磨损和腐蚀性质，它具有到细菌定植低亲和力并且它具有高断裂toughness.The瞄准这项工作是确定最佳粉末合成通过管状混合器和球磨机参数烧结复合材料的制造。粉末混合物通过49转，每分钟72和74rpm制备2，4和8小时，随后通过放电等离子，在1100℃下烧结，在10分钟和50 MPa.from的压力获得的结果加热的100℃/ min的速率它被发现的管状，在90％（体积）的Ti6Al4V和10vol％的ZrO 2的72转并球磨90％（体积）的Ti6Al4V和10体积％的ZrO 2混合在74rpm的速度已被证明产生均匀的混合粉末，其可进一步产生充分致密的SPS契约具有较高microhardncss值。

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