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首页> 外文会议>National SBIR/STTR conference;Annual nanotech conference and expo;Annual TechConnect world innovation conference expo >Effect of the Consolidation Techniques on the Mechanical Properties of Nanocrystalline Ti_(55)C_(45) Powders Prepared by Mechanically Induced Self-Propagating Reaction
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Effect of the Consolidation Techniques on the Mechanical Properties of Nanocrystalline Ti_(55)C_(45) Powders Prepared by Mechanically Induced Self-Propagating Reaction

机译：固结工艺对机械诱导自蔓延反应制备纳米晶Ti_（55）C_（45）粉末力学性能的影响

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摘要

Single phase of NaCl-type Ti_(55)C_(45) nanorystalline powders were synthesized by ball milling of elemental Ti and C powders. The powders obtained after 200 h of the ball milling time possessed spherical-like morphology with average particle and grain sizes of 45 nm and 4.2 nm, respectively. The powders of the end-product were consolidated into full dense compacts, using hot pressing (HP) and spark plasma sintering (SPS) at 1500 °C and 34.5 MPa, using heating rates of 20 °C/min and 500 °C/min, respectively. Whereas HP of the powders led to severe grain growth (～436 nm in diameter), the as-SPSed powders maintained their nanograined characterizations (～28 nm in diameter). The effect of the consolidation technique on the mechanical properties will be presented discussed.
机译：通过球磨Ti和C元素粉末，合成了NaCl型Ti_（55）C_（45）纳米晶粉末单相。球磨200小时后获得的粉末呈球形，平均粒径分别为45 nm和4.2 nm。使用热压（HP）和火花等离子体烧结（SPS）在1500°C和34.5 MPa下，以20°C / min和500°C / min的加热速率将最终产品的粉末固结为完全致密的压块， 分别。粉末的HP导致严重的晶粒长大（直径约436 nm），而SPSed粉末则保持其纳米粒度特征（直径约28 nm）。将讨论固结技术对机械性能的影响。

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