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在水溶液中化学合成了Fe,Co,Ni,Cu,Pb,Ca,Ba和La的高铼酸盐,对它们的结构、成分和形貌进行了XRD和SEM EDS分析表征,利用UMT-2M摩擦试验机,测试从室温至750℃在Si_3N_4陶瓷球/GH126镍基高温合金盘间添加合成高铼酸盐前后的摩擦系数,筛选部分合成高铼酸盐作为季戊四醇酯合成油的添加剂,测试其摩擦系数,结果表明:除合成Fe(ReO_4)_3为非晶态外,其它合成高铼酸盐均为晶态,它们的XRD数据与标准卡片中的数据十分接近,成分与计算值也基本相符,这些合成高铼酸盐均具有一定的润滑能力,且随温度变化的规律各不相同,其中,Co,Cu和Ca的合成高铼酸盐具有宽温度范围全程润滑油添加剂所期望的减摩性能,可以实现常温油润滑-高温固体润滑的混杂润滑模式。
The perrhenates of Fe, Co, Ni, Cu, Pb, Ca, Ba and La were chemically synthesized in aqueous solution. Their structures, compositions and morphologies were characterized by XRD and SEM EDS. The friction coefficient before and after the addition of synthetic perrhenate between Si3N4 ceramic ball and GH126 nickel-based superalloy disk from room temperature to 750 ℃ was tested. The part of synthesized perrhenate was selected as the additive of pentaerythritol ester synthetic oil and tested for friction The results show that the synthesized perrhenates are all crystalline, except that the synthesized Fe (ReO_4) _3 is amorphous. Their XRD data are very close to those of the standard card, and their compositions are in good agreement with the calculated values. These synthetic perrhenates all have a certain ability to lubricate and vary with the temperature. Among them, the synthesis of Co, Cu and Ca perrhenate has the desired antifriction properties over the entire temperature range of the lubricating oil additive , You can achieve room temperature oil lubrication - high temperature solid lubrication mixed lubrication mode.