The development of iron and titanium carbides nanoparticles reinforcements during the mechanosynthesis Cu–10Sn–15Ti/diamonds composite powders from a mixture of blended Cu/Sn/Ti powders and synthetic diamonds (10 wt%) was studied in this work. The analysis of the microstructure evolution showed that mechanical alloying performed at high-energy ball milling (600 rpm) allows developing different metastable phases depending on the SA content and milling time. For 3 wt% of SA, XRD patterns revealed a metastable Cu(Sn) solid solution is produced after 5 h of MA while Fe_2.939O₄, FeTiO₃ and TiH0.66 nanophases were formed for milling times higher than 15 h as a result of degradation of the SA in form of gaseous products (CO, CO₂, H₂, and lighter hydrocarbons (HC's)). XRD confirm that the release of these gases, along the SA degradation, and high carbon content carbon favors the carbothermic reduction of Fe_2.939O₄ for producing amorphous Fe₃C nanoparticles at low-temperature thanks to the high-energy transferred in each impact during the MA process. For 1 wt% of SA, XRD patterns showed the formation of Cu (Ti, Sn), from the very beginning of the process (5 h), is accompanied by the release of carboxyl groups (COOH) and crystallization of long heptadecane chains, CH₃(CH₂)₁₅CH₃. The high boiling point of this heptadecane chains and the low Fe released during milling, produces a lower content of amorphous Fe₃C nanoparticles. DSC and SAED patterns performed in the mixture of both alloyed powders after heating up to 1000 °C showed the carbothermic reduction of FeTiO₃ for producing TiC nanoparticles takes place preferably when a 3 wt% of SA is used. In both cases, the resulting alloyed powders are composed by a mixture of crystalline Cu13.7Sn + Fe + Fe₃C + C + TiC phases with an Fe, and Fe₃C and TiC content lower in the case of the powders processed with 1 wt% SA. The development of this dissimilar Fe₃C and TiC content produces the mixture with 3 wt% of SA shows a higher stiffness.

在这项工作中，研究了由混合的Cu / Sn / Ti粉末和合成金刚石（10 wt％）组成的机械合成Cu-10Sn-15Ti /金刚石复合粉末过程中铁和碳化钛纳米颗粒增强材料的发展。对微观结构演变的分析表明，在高能球磨（600 rpm）下进行的机械合金化可根据SA含量和研磨时间形成不同的亚稳态相。对于3 wt％的SA，XRD图谱显示在MA放置5小时后产生亚稳态的Cu（Sn）固溶体，而形成Fe _2.939 O ₄，FeTiO ₃和TiH0.66纳米相的研磨时间超过15 h。气态产物（CO，CO ₂，H₂和较轻的碳氢化合物（HC's）。XRD证实，随着SA降解，这些气体的释放以及高碳含量的碳有利于Fe _2.939 O ₄的碳热还原，从而在低温下产生无定形Fe ₃ C纳米颗粒，这是由于在每次撞击过程中传递的高能量MA流程。对于1 wt％的SA，XRD图谱显示从过程的最开始（5小时）开始形成铜（Ti，Sn），伴随着羧基的释放（COOH）和长庚烷链的结晶，通道₃（通道₂）₁₅通道₃。该庚烷链的高沸点和在研磨过程中释放的低铁产生了较低含量的无定形Fe ₃ C纳米颗粒。在加热至1000℃后，在两种合金粉末的混合物中进行的DSC和SAED图谱显示，当使用3重量％的SA时，优选发生FeTiO ₃的碳热还原，以生产TiC纳米颗粒。在这两种情况下，所得合金粉末均由具有Fe的结晶Cu13.7Sn + Fe + Fe ₃ C + C + TiC相组成，在用1处理的粉末中，Fe ₃ C和TiC含量较低wt％SA。Fe ₃ C和TiC含量不同的发展使SA含量为3 wt％的混合物显示出更高的刚度。