Kim Seong-Eun, Shon In-Jin
Division of Advanced Materials Engineering and Research Center of Hydrogen Fuel Cell, Jeonbuk National University, Jeonju-si, Jeollabuk-do, 54896, Republic of Korea.
J Nanosci Nanotechnol. 2021 Jul 1;21(7):3934-3937. doi: 10.1166/jnn.2021.19246.
TiB₂ powder was milled in a high-energy ball mill (Pulverisette-5 planetary mill) at 250 rpm for various time periods (0, 1, 4, and 10 h) and consolidated by the high frequency induction heated sintering (HFIHS). The effect of milling on the sintering behavior and crystallite size of TiB₂ powders were investigated. A nanostructured dense TiB₂ specimen with a relative density of up to 98% was readily achieved within very short time (two min). The ball milling effectively refined the crystallite structure of TiB₂ powders and facilitated the subsequent consolidation. The sinter-onset temperature was reduced remarkably by the prior milling for 10 h. Accordingly, the relative density and mechanical properties of TiB₂ compact increased as the milling time increased.
将TiB₂粉末在高能球磨机（Pulverisette - 5行星式球磨机）中以250转/分钟的转速研磨不同时间段（0、1、4和10小时），并通过高频感应加热烧结（HFIHS）进行固结。研究了研磨对TiB₂粉末烧结行为和微晶尺寸的影响。在非常短的时间（两分钟）内很容易获得相对密度高达98%的纳米结构致密TiB₂试样。球磨有效地细化了TiB₂粉末的微晶结构，并促进了随后的固结。预先研磨10小时可显著降低烧结起始温度。因此，TiB₂压块的相对密度和机械性能随着研磨时间的增加而提高。
