Reducing the sintering time/temperature has been long desired. A so-called “non-firing sintering” was previously introduced by authors, without using thermal energy. This method involves the chemical activation of powder surface via ball milling, however, the mechanical strength of solidified bodies by non-firing sintering method is still low. In this study, an optimized non-firing process will be proposed in order to achieve high-strength materials comparable to the high-temperature sintered counterparts. Results showed that by optimizing the process, mechanical strength of 270 MPa and Vickers hardness of 2.1 GPa (214 Hv) were successfully achieved. It is also shown that the particle-particle bridge strength determines the bulk strength.

一直期望减少烧结时间/温度。作者先前没有使用热能就引入了所谓的“非烧结烧结”。该方法涉及通过球磨对粉末表面进行化学活化，但是，通过非烧结烧结方法的凝固体的机械强度仍然很低。在这项研究中，将提出一种优化的非烧制工艺，以实现与高温烧结材料相当的高强度材料。结果表明，通过优化工艺，成功实现了270 MPa的机械强度和2.1 GPa（214 Hv）的维氏硬度。还显示出颗粒-颗粒桥强度决定了体积强度。