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alloy
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  合金
    Investigation on the Optical Properties of GaPN Alloy and the Transient Photoluminescence of GaInP and AlGaInP Alloys
    GaPN混晶光学性质及GaInP、AlGaInP合金瞬态发光性质的研究
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    Study on the Functionalization of CNTs and the Catalytic Hydrogenation of NiB Amorphous Alloy Catalyst Supported on CNTs
    碳纳米管功能化及其负载非晶态NiB合金催化剂的加氢性能研究
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    Study on the Preparation of Carbon Nanotubes and the Catalytic Properties over CNTs Supported NiB Amorphous Alloy Catalyst
    碳纳米管的制备及负载非晶态NiB合金的催化性能的研究
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    Studies on the Properties and Modification of Amorphous NiB Alloy Catalysts
    非晶态NiB合金催化剂的性能及其改性研究
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    Determination of Silicon in Rare earthferrosilicon Alloy by Differential Spectrophotometric Method
    示差分光光度法测定硅铁稀土合金中的硅
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  “alloy”译为未确定词的双语例句
    Continuous Determination of Lead and Tin in Electroplating Solution of Lead-tin Alloy
    铅-锡合金电镀液中铅、锡的连续测定
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    Automatic Analyzer of Six Elements Mn、Cr、P、Mo、V、Ni in Alloy Steels
    合金钢中锰、铬、磷、钼、钒、镍六元素自动分析仪
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    Determination of Molybdenum in Alloy Steels and Pure Iron by Atomic Absorption Spectrometry
    原子吸收法测定合金钢和纯铁中钼
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    Quantitative Determination or Some Trace Elements in Low Alloy Steel by Ion Micro Probe
    用离子探针对低合金钢中某些微量元素进行定量分析
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    Spectrophotometric Determination of Molybdenum in Alloy Steels and Ores with 4,5-Dibromophenylfluorone and Cetyltrimethylammonium Bromide
    4,5-二溴苯基萤光酮-溴化十六烷基三甲基铵分光光度法测定合金钢和矿物中的钼
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  alloy
X-ray diffraction and selected area electron diffraction analysis showed that Pt-Sn-B/CNTs had an amorphous alloy structure that can improve catalytic performance.
      
Preparation, structure and properties of porous polyimide films via PAA/PU alloy
      
A quantitative index martensite fraction was used to describe the phase transformation degree of shape memory alloy (SMA).
      
The electrostatic-alloy bonding technique used in MEMS
      
Electrostatic-alloy bonding of silicon wafer with glass deposited by Au to form Si/Au-glass water, and bonding of Si/Au-glass with silicon wafer were researched during fabrication of pressure sensors.
      
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(1) The determination of Cu. Sn Pb. Zn and Ni in copper alloys for blast furnance accessories, such as inlet hole of bustle pipe and cooling chambers, were studied. (2) For the determination of small quantities of Zn and Ni, polarographic method was found to be more suitable. A visual polarographic apparatus had been set up from home made instruments, with a cost about 1/3 only of the price of an ordinary imported polarograph. Using NH_3~(NH_4)_2 SO_4 instead of NH_3~NH_4Cl as supporting electrolyte was...

(1) The determination of Cu. Sn Pb. Zn and Ni in copper alloys for blast furnance accessories, such as inlet hole of bustle pipe and cooling chambers, were studied. (2) For the determination of small quantities of Zn and Ni, polarographic method was found to be more suitable. A visual polarographic apparatus had been set up from home made instruments, with a cost about 1/3 only of the price of an ordinary imported polarograph. Using NH_3~(NH_4)_2 SO_4 instead of NH_3~NH_4Cl as supporting electrolyte was found to be more economical because of lower consumption of reagent. It was also found that the composition of the polarographic medium could be varied in a considerably wide range without appreciable influence on the accuracy of the result. The adop tation, therefore, of this method in routines analysis in steel plant was recommended. (3) The proposed polarographic medium in the above mentionel method was 1 N NH_4OH, 0.03% agar-agar, 1.2 g. (NH_4)_2SO_4 and 4 ml. saturated Na_2 SO_3 in 50 ml. of the polarographic solution. (4) The procedures used in Tai-yuan Steel Plant for the determination of Sn, pb. and Cu were tested in order to find an optimium range of acidity of electrolysis, which could be readily controlled.

(1)本文提出了高爐配件(如风口,冷却水箱等)所用某些铜合金中Cu.Sn.Pb.Zn.Ni.的测定方法。 (2)该合金中少量Zn和Ni的测定,以使用极谱法为宜。 (3)为了降低极谱设备的费用,作者证明可以采用价格仅及极谱仅三分之一的国产设备装配的视式极谱装置来进行Zn和Ni的测定。 (4)为了降低试藥费用,作者根据条件试验证明:可以用NH_3~(NH_4)_2SO_4代替NH_3~NH_4Cl作为支持电解质。 (5)采用上述兩項措施后,不但节約,而且較用极譜仪和NH_3~NH_4Cl支持电解質为快速。作者并根据测得数据,断定本法有滿意的再現性。同时証明:基底液中各种物質的濃度,可以在相当大的范围內改变,而不致影响测定結果。故本法可試用于鋼鉄厂的日常分析工作。 (6)极譜基底液成份是1N NH_4OH,0.03%琼脂和1.2克(NH_4)_2SO_4/50ml.4毫升飽和Na_2SO_3溶液/50毫升。但实际操作中极譜基底液的成分无須十分准确,各种成分的濃度,只要在本文所述的范圍內即可。 (7)作者以为太原鋼鉄厂原来使用的操作規程中,测定該銅合金中Cu.Pb.Sn的方法有其优点,并在电解介質的成分方面,作了些补...

(1)本文提出了高爐配件(如风口,冷却水箱等)所用某些铜合金中Cu.Sn.Pb.Zn.Ni.的测定方法。 (2)该合金中少量Zn和Ni的测定,以使用极谱法为宜。 (3)为了降低极谱设备的费用,作者证明可以采用价格仅及极谱仅三分之一的国产设备装配的视式极谱装置来进行Zn和Ni的测定。 (4)为了降低试藥费用,作者根据条件试验证明:可以用NH_3~(NH_4)_2SO_4代替NH_3~NH_4Cl作为支持电解质。 (5)采用上述兩項措施后,不但节約,而且較用极譜仪和NH_3~NH_4Cl支持电解質为快速。作者并根据测得数据,断定本法有滿意的再現性。同时証明:基底液中各种物質的濃度,可以在相当大的范围內改变,而不致影响测定結果。故本法可試用于鋼鉄厂的日常分析工作。 (6)极譜基底液成份是1N NH_4OH,0.03%琼脂和1.2克(NH_4)_2SO_4/50ml.4毫升飽和Na_2SO_3溶液/50毫升。但实际操作中极譜基底液的成分无須十分准确,各种成分的濃度,只要在本文所述的范圍內即可。 (7)作者以为太原鋼鉄厂原来使用的操作規程中,测定該銅合金中Cu.Pb.Sn的方法有其优点,并在电解介質的成分方面,作了些补充試驗,使操作条件更为明确。

Estimation of contaminated iron in tungsten-cobalt alloy can be performedwith the aid of paper-descending chromatographic method. After the alloy hasbeeh fused with sodium carbonate in a platinum crucible, tungsten is removedby precipitation. In the filtrate, iron and cobalt are separated by means ofpaper chromatography. Cut out the portion of paper strip which contains onlyiron and extract with 0.1 N bydrochloric acid. Finally iron is determinedcolorimetrically. The amount of iron used in each test...

Estimation of contaminated iron in tungsten-cobalt alloy can be performedwith the aid of paper-descending chromatographic method. After the alloy hasbeeh fused with sodium carbonate in a platinum crucible, tungsten is removedby precipitation. In the filtrate, iron and cobalt are separated by means ofpaper chromatography. Cut out the portion of paper strip which contains onlyiron and extract with 0.1 N bydrochloric acid. Finally iron is determinedcolorimetrically. The amount of iron used in each test is 6.17γ throughout the whole work.The contaminated iron in iron-cobalt hydrochloric acid solution is first deter-mined by direct colorimetric method. When the ratios of iron to cobalt are1:10; 1:50; 1:100; 1:500, the relative errors are 0.3%, 2.9%, 11.8%, 33.1%respectively. If iron and cobalt are separated before the colorimetry, theaccuracy is improved. For the ratios of iron to cobalt equal to 1:50 until1:3000, the relative errors of the results are 0.3--3%. Therefore, when theratio of iron to cobalt exceeds 1:10, a separation is necessary. The separation of iron and cobalt is influenced by the method of preci-pitating tungsten. Using hydrochloric acid as precipitant when the ratio ofiron to cobalt is 1:3000, they can be separated clearly on Duren paper No. 261.While using hydrochlorie acid and cinchonine in saturated sodium chloridesolution as precipitant, iron and cobalt cannot be separated clear1y even at aratio 1:500. Because the presence of sodium chloride and cinchonine increasethe R_F value of cobalt and the cobalt spot overlaps the rear part of the iron. Accuracy is also affected by the nature of the paper. Duren paper No. 261is dense and even. Accurate results are obtained for solutions in which theratio of iron and cobalt is within 1:3000. With loose and uneven paper, thelong tail of iron appears on the paper when the ratio of iron to cobalt is1:500. Therefore, the latter is not recommended for this separation. It is also found that the accuracy of the method is affected by (1) theconcentration of cobalt, (2) the nature of the medium and also (3) the propertyof the paper.

测定铁、钴混合液中数微克的铁(钨已事先用化学方法除去),如铁钴之比为1:10或以下,可毋须分离,进行比色测定。如铁钴之比为1:50至1:3000,则用纸层析后再比色测定,结果良好(相对误差为0.3—3%)。溶液中如尚含其他化合物及滤纸之品质均对层析分离有影响。

1. The procedures for the polarographic determination of nickel and zinc in copper-nickel alloys and copper alloys in which the nickel amounts to 5 times the zinc have been worked out by the authors. 2. In a supporting electrolyte composed of 0.3 N (NH_4)_2 SO_4 and 1 N NH_4 OH, the concentration of nickel, in the range of 0.5—20 mg/50 ml, is found to be linearly proportional to the wave height, a condition suitable for the determination of nickel in copper alloys with high nickel content....

1. The procedures for the polarographic determination of nickel and zinc in copper-nickel alloys and copper alloys in which the nickel amounts to 5 times the zinc have been worked out by the authors. 2. In a supporting electrolyte composed of 0.3 N (NH_4)_2 SO_4 and 1 N NH_4 OH, the concentration of nickel, in the range of 0.5—20 mg/50 ml, is found to be linearly proportional to the wave height, a condition suitable for the determination of nickel in copper alloys with high nickel content. The presence of NO_3~- does not interfere the determination of nickel. 3. In the precipitation of zinc with NH_4 CNS and methyl violet, when H_3PO_4 amounts to 4.5 ml in 50 ml, no dissolving of zinc is observed. Large amounts of NO_3~- and SO_4~- do not interfere. This separation method will be satisfactory when the amount of nickel present is as high as 200 times that of zinc, and also when the quantity of zinc is 0.2 mg. 4. To avoid time-consuming procedure of destruction of methyl violet by ignition, the precipitate of zinc methyl violet, together with the filter paper, is dissovlled in acid, and the methyl violet is precipitated on the addition of NH_4OH. No appreciable adsorption of zinc on methyl Violet precipitate and filter paper is found. 5. In the polarographic determination of zinc, a supporting electrolyte composed of 1N (NH_4)_2 SO_4 and 0.6N NH_4OH can be used. The concentration of zinc, in the range of 0.1—6.5 mg/50 ml, is found to be linearly proportional to the wave height. If a sample of 1 g. is used, 0.02% zinc can be determined satisfactorily. 6. The polarographic determination of nickd is compared with the volumetric method and that of zinc, with the colorimetric method, the results are satisfactory in both cases.

1.本文拟訂了鎳含量超过鋅含量五倍时,銅鎳合金及銅合金中鎳与鋅的极譜测定方案。 2.为适应高鎳銅合金中鎳的测定,确定了在0.3N(NH_4)_2SO_4和1N NH_4OH的解質中,鎳浓度在0.5—20毫克/50毫升范圍內与波高成直綫关系。NO~(3-)的存在,不影响鎳的测定。 3.用NH_4CNs、甲基紫沉淀鋅时,H_3PO_4用量达4.5毫升/50毫升时,尚不会使沉淀溶解。当鎳含量大于鋅含量200时,仍能满意的將鋅分离出来。大量NO_3~-及SO_4~-的存在,对沉淀鋅沒有影响。含鋅量为0.2毫克时,还可滿意的测定出来。 4.为了避免灰化、灼燒以破坏甲基紫的費时操作,作者將鋅的甲基紫沉淀連同濾紙一起放入容量瓶中,用酸溶解后,再加入NH_4OH、甲基紫随即成为絮狀沉淀析出。实驗証明,这种絮狀沉淀及濾紙,对鋅的吸附很小,不影响鋅的測定。 5.极譜法測定鋅时,可用1N(NH_4)_2SO_4和0.6N NH_4OH作为支持电解質。鋅的含量在0.1—6.5毫克/50毫升范圍内与波高成直线关系。如考虑称取1克样品,含鋅量达0.02%时,仍可满意的测定出来。 6.用容量法测定鎳及比色法测定鋅进行了比较,結果頗为一致。

 
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