The new carbon-rich zinc process, although based on the alkaline zincate electrolyte,overcomes the hydrogen overvoltage problem, and is capable of direct plating on a variety of castiron surfaces.
“锌克能”为碱性工艺,但克服了氢过[电]压的问题,能直接镀于铸铁表面上,沉积层均匀,可有效覆盖深凹部分区域。
The hydroperoxide contents in two kinds of endothermic hydrocarbon fuels,ZH-100 and JP-10,during the auto-oxidation at different temperatures from 100 to 180℃ were determined by an accelerated oxidation test.
采用加速热氧化的方法,于100~180℃,测定了2种吸热型碳氢燃料(ZH-100和JP-10)自氧化过程中生成氢过氧化物的浓度,考察了氢过氧化物的浓度随温度、氧化时间的变化。
Lipoxygenase can catalyze the reaction of Linoleic acid with oxygen and lead to the formation of 13s hydroperoxide(HPOD) from which a number of six carbon alcohols and aldehydes are formed.
脂肪氧合酶催化亚油酸生成 13位的氢过氧化物 (HPOD) ,在过氧化物酶的作用下可生成具有青草芬芳的自然风味的化合物。
The viscosity-average molecular weight of PE and the hydroperoxide concentration () were measured.
以低密度聚乙烯 (LDPE) /铁 (或锡 )的有机化合物 /含氮有机物为降解体系 ,制成薄膜样品 ,于模拟堆肥环境中降解 ,跟踪取样 ,测定其粘均分子量及氢过氧化物浓度 ([POOH])变化 ,另外 ,进行了傅立叶变换红外 (FT- IR)和差示扫描量热分析 (DSC)测试。
In order to improve the deposition rate, anti - corrosion properties and high hydrogen overpotential of electroless Ni-Co-W-P plating, the effects of the composition, pH value, temperature, rotation speed and surface active agents were respectively studied on the deposition rate and corrosion resistance of electroless Ni-Co-W-P coating.
为改善化学镀Ni-Co-W-P合金工艺镀速慢、镀层耐腐蚀性能差、析氢过电位高等问题,研究了镀液组分、pH值、温度、转速、表面活性剂对45钢上化学镀Ni-Co-W-P合金镀层沉积速度、耐腐蚀性能、镀层厚度、孔蚀率、表面形貌和硬度的影响,得出最佳镀液配方:6g/LCoSO4,24g/LNiSO4,20g/LNaH2PO2,20g/LNa2WO4·2H2O,20g/L(NH4)2SO4,24g/LNa3C6H5O7,11g/L苹果酸,pH值7。
The hydrogen overvoltage of the active cathode is about 190 mV lower than that of Fe electrode in the same condition.
在相同条件下， 这种活性阴极的析氢过电势比铁阴极低１９０ ～２５０ｍＶ （ｉ ＝ １３０ ～２００ｍＡ ） 。