Development and evaluation of preparation process of composite materials in powder systems with different physical properties using fine mixing and kneading

精细混合捏合不同物理性质粉末体系复合材料制备工艺的开发与评价

• 批准号: 11650785
• 负责人: SATOH Munetake
• 金额: $ 2.3万
• 依托单位: Osaka Prefecture University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11650785/
• 关键词: Composite material; Fine mixing; Plastic deformation; Discrete element method; Melt injection test; Shear test; Agitation granulation; Compression forming; 粒子複合化; 材料試験; 表面改質; メカニカルアロイング

We have proposed the method for estimating experimentally the net energy applied to the particles in equipment for compounding the particles. In the method, the spherical copper particles, of which the stress-strain relation is known, are used as the standard material. The method has been applied to a high-speed elliptical-rotor-type powder mixer (HEM) to which Zirconia beads were added to aid stress transmission. The net applied energy has been estimated by measuring the deformation of copper particles after processing under various operating conditions. To investigate the energy transmission from the elliptical rotor to the particles via the beads, the motion of beads has been analyzed by using the discrete element method. By utilizing the results of experiment and calculation, the composite particles with a desired feature (shape, surface condition, size distribution, etc.), which consists of fine alumina particles (guest particles) and copper particles (host particles), can be prep … More ared. The green body of which the internal structure is homogeneous or regular heterogeneous can be manufactured by the compression forming of the composite particles thus obtained.Flowability of metal particles used in metal-injection-molding (MIM) process has been evaluated by performing the shear test using the rotary-intrusion-type powder rheometer with a conical rotor. The dynamic friction coefficient measured is closely related to the characteristics of melt injection of metal particles, and considerably changes after the surface modification of metal particles by the HEM.The plasticity of metal particles can be modified by controlling the surface condition of metal particles.In the development and evaluation of powder materials including fibers, the powder-fiber interaction and the characteristics of structure of the powder-fiber mixture have been clarified by newly developed testers. The optimum features of granules of the mixture and the optimum operating conditions in the granulation have been determined. Less

我们提出了一种方法，用于实验估计的净能量施加到设备中的粒子，用于复合粒子。在该方法中，球形铜颗粒，其应力-应变关系是已知的，被用作标准材料。该方法已被应用到一个高速椭圆转子型粉末混合器（HEM），其中氧化锆珠被添加到帮助应力传递。通过测量在各种操作条件下加工后铜颗粒的变形，估计了净施加能量。为了研究椭圆转子通过珠粒向颗粒的能量传递，采用离散元方法对珠粒的运动进行了分析。通过利用实验和计算的结果，具有期望特征（形状、表面状况、尺寸分布等）的复合颗粒，其由细氧化铝颗粒（客体颗粒）和铜颗粒（主体颗粒）组成， ...更多信息 瑞德。采用锥形转子旋转侵入式粉末流变仪对金属注射成形（MIM）过程中的金属颗粒进行剪切试验，评价了金属颗粒的流动性。所测得的动摩擦系数与金属颗粒的熔体注射特性密切相关，并且在通过HEM对金属颗粒进行表面改性后发生了显著变化。通过控制金属颗粒的表面状态可以改变金属颗粒的塑性。在包括纤维的粉末材料的开发和评价中，通过新开发的测试仪阐明了粉末-纤维的相互作用和粉末-纤维混合物的结构特征。确定了混合物的最佳颗粒特征和造粒的最佳操作条件。少

项目成果

Yoshiyuki Sugai: "Granulation of Powder Containing Fibrous Materials"Journal of the Society of Powder Technology, Japan. 36. 825-832 (1999)

Yoshiyuki Sugai：“含有纤维材料的粉末的造粒”日本粉末技术协会杂志。

須貝幸廉: "含繊維粉体混合物の造粒"粉体工学会誌. 36巻11号. 825-832 (1999)

Yukinori Sugai：“含纤维粉末混合物的造粒”粉末工程学会杂志，第 36 卷，第 11 期。825-832 (1999)

岩崎智宏: "Analysis of the Compressing and Shearing Behavior of Powders in a Highspeed Elliptical-rotor-type Powder Mixer (HEM)"Journal of Chemical Engineering of Japan. 33,3. 499-506 (2000)

Tomohiro Iwasaki：“高速椭圆转子型粉末混合器 (HEM) 中粉末的压缩和剪切行为分析”日本化学工程杂志 33,3 (2000)。

岩崎智宏: "Estimation of net energy applied to powders in a newly designed bead mill"Powder Technology. (in press).

Tomohiro Iwasaki：“估算新设计的珠磨机中粉末的净能量”粉末技术（正在出版）。