铬酸

ɡè suān
  • chromic acid
铬酸铬酸
  1. 采用铬酸氧化法及吡咯气相沉积聚合法处理UHMWPE纤维。

    UHMWPE fibers were treated by chromic acid oxidation and pyrrole vapor deposition respectively .

  2. 该方法可用于镀铬溶液和铬酸钝化液中Cr(Ⅵ)和Cr(Ⅲ)含量的测定。

    The method can be applied to the determination of Cr (ⅵ) and Cr (ⅲ) in chromium plating bath and chromic acid passivation bath .

  3. 制备了Zn修饰的亚铬酸铜催化剂并用于甘油转化为羟基丙酮的反应,对所制备的催化剂进行了表征。

    The Zn-modified copper-chromite catalyst was prepared and used in the hydration of glycerol to acetol .

  4. 人工合成硫酸型钙矾石和铬酸型钙矾石晶体的X射线衍射谱显示,铬酸型钙矾石的晶格比硫酸型钙矾石的稍大一些。

    The lattice of chromate ettringite appears a little bigger than that of ettringite according to their X-ray diffraction patterns .

  5. 用DSC和XRD等手段对掺铝铬酸镧烧结过程的相变进行研究。

    Phase transformation of aluminum-doped lanthanum chromite during sintering was investigated by DSC and XRD .

  6. ICP-AES法同时测定铬酸钾中杂质元素

    Simultaneous Determination of Impurities in K_2CrO_4 by ICP-AES

  7. 运用X射线衍射仪对铬渣中所含矿物进行研究,可以看出铬渣中主要含有硅酸二钙和铁铝酸四钙,还含有铬酸钙、方镁石、方解石、铬铁尖晶石等矿物。

    Through XRD , there are dicalcium silicate , tetracalcium ferrite , calcium chromate , calcite and chromium iron spinel mineral in chromium residues .

  8. 重铬酸溶液/银剂量计用作~(60)Coγ射线(10&40kGy)吸收剂量传递标准的研究

    Studies on dichromate solution / Ag ~ + dosimeters as ~ ( 60 ) Co absorption dose transfer standard in the 10-40 kGy range

  9. 采用铬酸刻蚀和化学气相沉积聚吡咯处理了超高相对分子质量聚乙烯(UHMWPE)纤维。

    UHMWPE fiber were treated by chromic acid etching and chemical vapor depositing polypyrrole ( PPy ) .

  10. 结合对铬酸钾的光催化还原效率,对这种体系制备的TiO2膜的工艺参数(电解液浓度、电流密度、电压)对膜层结构、表面形貌以及铬酸钾的还原率进行了研究。

    Process parameters ( electrolyte concentration , current density and voltage ) were optimized according to the photocatalytic reduction efficiency of chromate potassium .

  11. 实验表明,此法也适用于测定铜、铝、镍的铬酸电抛光液中Cr(Ⅵ)的浓度。

    The experimental results showed that the method is also suitable for determination of Cr (ⅵ) ion concentration in electropolishing baths for copper , aluminium or nickel .

  12. PbO2阳极在硫酸铬电解氧化制备重铬酸时的电极行为

    Behavior of PbO_ 2 Anode in the Preparation of Dichromic Acid by Electrooxidation of Chromium Sulfate

  13. 前言:目的:采用EDTA配位滴定法准确快速测硫酸钡纯度并与常用的铬酸钡容量法进行对照。

    Objective : To dopt EDTA complexometry veraciously quickly measure barium sulfate purity and in contrast to barium chromate volumetric procedure .

  14. 研究了铜铬氧化物前驱体铬酸铜铵(CAC)的热解条件对纳米结构催化剂中CC晶粒尺寸的影响。

    It was studied that the effect of pyrolytic conditions of copper ammonium chromate precursor on the particle size of CC in ns-CC .

  15. 当FG与亚铬酸铜组合使用时,可在提高推进剂燃速的同时大幅度地降低燃速压强指数。

    When FG and YB are incorporated , they may obviously reduce the pressure exponent of HTPB propellant as well as enhancing the burning rate .

  16. 溶液中过剩的铬酸钾被标准AgNO3溶液滴定。

    The excess of potassium chromate in the solution was titrated by standard AgNO_3 solution .

  17. 通过XRD、DSC、TG等测试方法对粉末合成过程中的相变规律进行分析,探讨锂元素对铬酸镧粉合成过程的影响。

    The effects of Li doping on synthesizing process and the crystal structure of lanthanum chromite were discussed on the base of studying the phase transformation of powders by TG , DSC , XRD , etc methods .

  18. 本文用~(51)Cr-铬酸钠释放法分析了由PBL、SPC和THC制备的LAK细胞免疫活性变化规律。

    In the paper , the alterative regularities of the killing activity of LAK cell prepared with PBL , SPC and THC was studied by ~ ( 51 ) Cr-release way .

  19. 采用S-N曲线研究硫酸阳极化、铬酸阳极化和硼酸硫酸阳极化对航空铝合金疲劳极限的影响。

    The effect of sulfuric acid , chromate acid and boric / sulfuric acid anodizing on fatigue performance of aeronautic aluminum alloys was studied by using S-N curve .

  20. 结果表明,钼酸铵、重铬酸铵、铬酸铵或钨酸铵的添加对提高产物醛的收率有促进作用,并且在蒸馏分离催化剂和产物的过程中可以减少Rh的损失。

    Ammonium molybdate , ammonium dichromate , ammonium chromate and ammonium tungstate showed positive effects on the formation of aldehydes and reduced the loss of rhodium in the distillation process for the separation of the catalyst and products .

  21. 经对制备的钨酸镉、钼酸镉和铬酸镉测定,它们的组成为CdWO4·H2O(白色)、CdMoO4(白色),CdCrO4·2H4O(黄色)。

    Cadmium tungstate , cadmium molybdate and cadmium chromate were prepared . The compositions of these solid compounds were determined as CdWO_4 · H_2O ( white ), CdMoO_4 ( white ) and CdCrO_4 · 2H_2O ( yellow ) .

  22. 利用工业生产重铬酸钠的废弃物铝泥研制Cr-Al鞣剂,必须首先对铝泥的成分进行分析,并确定合适的方法准确测定铝泥中的Cr、Al含量。

    Analysis of aluminum residue and determination of the content of Cr (ⅵ) and Al (ⅲ) in it are essential to utilize aluminum residue , a kind of waste from dichromate industry , for preparation of Cr-Al complex tanning agents .

  23. 全息滤光器是一种新型滤光器,特别是利用重铬酸明胶(DCG)记录的全息透射式窄带滤光器,其主要特点为对主谱线有很窄的带宽。

    Holographic filter , especially the transmission volume holographic notch filters using dichromate gelatin ( DCG ), is a new kind of filter with the main characteristic of a very narrow bandwidth .

  24. 通过对Al-Ti复合氧化膜在磷酸-铬酸混合溶液中的溶解试验,研究了阳极氧化温度、电压及电流密度对Al-Ti复合氧化膜结构的影响。

    The effects of temperature , voltage and current density on structure of Al-Ti composite oxide films were investigated by the dissolution experiment in mixed solution of phosphoric acid and chromic acid .

  25. 结果表明,国产铬酸镧电热元件由尺寸均匀的等轴晶组成,元件的热端在使用2000h后晶粒长大十分明显,并存在调幅分解。

    There was spinodal decomposition and remarkable increase of grain size in the internal electrothermic element composed of uniform equiaxial grains after heating for 2000h .

  26. 文章阐述了经过电解铬酸处理的镀锡板及TFS板,涂上环氧系树脂涂料后,经过延伸,压缩及深冲后,不同表面处理层对不同漆膜加工性及耐蚀性的影响。

    Following the treatment of epoxy resin coating elongation , compression and deep drawing to the electrolytic chromic acid treated tin - plated steel and TFS , different surface coating influences the processing property and corrosion resistance of paint film .

  27. 研究了硫酸阳极氧化和铬酸阳极氧化工艺对LY12CZ板材、LC9CS棒材在中值寿命区疲劳强度的影响。

    This paper studies the effects of the sulfuric acid anodizing and chromic acid anodizing on the fatigue strength in the intermediate value life zone of LY12CZ plate and LC9CS bar .

  28. 而且SDDTC与硫酸锌,铬酸钠之复配缓蚀剂具有很好的协同增效作用,这一切相关研究具有重要的实际应用意义。

    And SDDTC and zinc sulfate , sodium chromate corrosion inhibitors of the compound has good synergies , all of this research has important practical application of significance .

  29. 用重铬酸明胶(DCG)作为全息记录材料制做了多通道光互连元件,该元件衍射效率为80%,4×4个输出光束通道,光强不均匀性小于10%。

    Multichannel light interconnection element is made with dichromated gelatin ( DCG ) as holographic recording materials . The diffraction efficiency of which is 80 percent , 4 × 4 output beam channels , the non-uniformity of the intensity of light is less then 10 percent .

  30. 报道了采用试样自身色泽补偿和氯化物标准加入法,在试样最小吸收波长600nm处测量表观吸光度代替测量浊度的方法,测定了重铬酸镁中的氯化物含量。

    A turbidimetric method for the determination of chloride in colored sample solution of MgCr_2O_7 was developed . Measurement of apparent absorbance instead of turbidity was carried out at wavelength of 600 nm in compensation for the influence of the sample color on the measurement .